Changeset 2718

Timestamp:

05/06/14 13:59:46 (9 years ago)

Author:

julian.reschke@…

Message:

update AUTH48 versions (#553)

Location:

draft-ietf-httpbis/latest/auth48

Files:

• rfc7230.abdiff.txt (modified) (3 diffs)
• rfc7230.diff.html (modified) (45 diffs)
• rfc7230.txt (modified) (3 diffs)
• rfc7232.abdiff.txt (modified) (1 diff)
• rfc7232.diff.html (modified) (15 diffs)
• rfc7232.txt (modified) (4 diffs)
• rfc7234.abdiff.txt (modified) (1 diff)
• rfc7234.diff.html (modified) (32 diffs)
• rfc7234.txt (modified) (3 diffs)

draft-ietf-httpbis/latest/auth48/rfc7230.abdiff.txt

@@ -466 +466 @@
 
 
+Section 3.3.1., paragraph 8:
+OLD:
+
+    Unlike Content-Encoding (Section 3.1.2.1 of [RFC7231]), Transfer-
+    Encoding is a property of the message, not of the representation, and
+    any recipient along the request/response chain MAY decode the
+    received transfer coding(s) or apply additional transfer coding(s) to
+    the message body, assuming that corresponding changes are made to the
+    Transfer-Encoding field-value.  Additional information about the
+    encoding parameters can be provided by other header fields not
+    defined by this specification.
+
+NEW:
+
+    Unlike Content-Encoding (Section 3.1.2.1 of [RFC7231]),
+    Transfer-Encoding is a property of the message, not of the
+    representation, and any recipient along the request/response chain
+    MAY decode the received transfer coding(s) or apply additional
+    transfer coding(s) to the message body, assuming that corresponding
+    changes are made to the Transfer-Encoding field-value.  Additional
+    information about the encoding parameters can be provided by other
+    header fields not defined by this specification.
+
+
 Section 3.3.2., paragraph 10:
 OLD:
@@ -764 +788 @@
 
 
+Section 19.7.1, paragraph 4:
+OLD:
+
+    Clients are also encouraged to consider the use of Connection: keep-
+    alive in requests carefully; while they can enable persistent
+    connections with HTTP/1.0 servers, clients using them will need to
+    monitor the connection for "hung" requests (which indicate that the
+    client ought stop sending the header field), and this mechanism ought
+    not be used by clients at all when a proxy is being used.
+
+NEW:
+
+    Clients are also encouraged to consider the use of Connection:
+    keep-alive in requests carefully; while they can enable persistent
+    connections with HTTP/1.0 servers, clients using them will need to
+    monitor the connection for "hung" requests (which indicate that the
+    client ought stop sending the header field), and this mechanism ought
+    not be used by clients at all when a proxy is being used.
+
+
 Section 19.7.1, paragraph 21:
 OLD:
@@ -780 +824 @@
  
     The segment + query components of RFC 3986 have been used to define
-    the request-target, instead of abs_path from RFC 1808.  The asterisk-
-    form of the request-target is only allowed with the OPTIONS method.
-    (Section 5.3)
+    the request-target, instead of abs_path from RFC 1808.  The
+    asterisk-form of the request-target is only allowed with the OPTIONS
+    method.  (Section 5.3)
 
 

draft-ietf-httpbis/latest/auth48/rfc7230.diff.html

@@ -461 +461 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   [RFC7231]) switch to tunnel mode instead of having a message body.</td><td> </td><td class="right">   [RFC7231]) switch to tunnel mode instead of having a message body.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 30, line 40</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 31, line 14</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 28, line 50</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 29, line 25</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   by closing the connection.</td><td> </td><td class="right">   by closing the connection.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   For example,</td><td> </td><td class="right">   For example,</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">     Transfer-Encoding: gzip, chunked</td><td> </td><td class="right">     Transfer-Encoding: gzip, chunked</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   indicates that the payload body has been compressed using the gzip</td><td> </td><td class="right">   indicates that the payload body has been compressed using the gzip</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   coding and then chunked using the chunked coding while forming the</td><td> </td><td class="right">   coding and then chunked using the chunked coding while forming the</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   message body.</td><td> </td><td class="right">   message body.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0013" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   Unlike Content-Encoding (Section 3.1.2.1 of [RFC7231]), <span class="delete">Transfer-</span></td><td> </td><td class="rblock">   Unlike Content-Encoding (Section 3.1.2.1 of [RFC7231]),</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Encoding</span> is a property of the message, not of the representation, and</td><td> </td><td class="rblock">   <span class="insert">Transfer-Encoding</span> is a property of the message, not of the</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   any recipient along the request/response chain MAY decode the</td><td> </td><td class="rblock">   representation, and any recipient along the request/response chain</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   received transfer coding(s) or apply additional transfer coding(s) to</td><td> </td><td class="rblock">   MAY decode the received transfer coding(s) or apply additional</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   the message body, assuming that corresponding changes are made to the</td><td> </td><td class="rblock">   transfer coding(s) to the message body, assuming that corresponding</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   Transfer-Encoding field-value.  Additional information about the</td><td> </td><td class="rblock">   changes are made to the Transfer-Encoding field-value.  Additional</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   encoding parameters can be provided by other header fields not</td><td> </td><td class="rblock">   information about the encoding parameters can be provided by other</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   defined by this specification.</td><td> </td><td class="rblock">   header fields not defined by this specification.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   Transfer-Encoding MAY be sent in a response to a HEAD request or in a</td><td> </td><td class="right">   Transfer-Encoding MAY be sent in a response to a HEAD request or in a</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   304 (Not Modified) response (Section 4.1 of [RFC7232]) to a GET</td><td> </td><td class="right">   304 (Not Modified) response (Section 4.1 of [RFC7232]) to a GET</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   request, neither of which includes a message body, to indicate that</td><td> </td><td class="right">   request, neither of which includes a message body, to indicate that</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   the origin server would have applied a transfer coding to the message</td><td> </td><td class="right">   the origin server would have applied a transfer coding to the message</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   body if the request had been an unconditional GET.  This indication</td><td> </td><td class="right">   body if the request had been an unconditional GET.  This indication</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   is not required, however, because any recipient on the response chain</td><td> </td><td class="right">   is not required, however, because any recipient on the response chain</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   (including the origin server) can remove transfer codings when they</td><td> </td><td class="right">   (including the origin server) can remove transfer codings when they</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   are not needed.</td><td> </td><td class="right">   are not needed.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 30, line 40</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 31, line 14</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   unless its field-value equals the decimal number of octets that would</td><td> </td><td class="right">   unless its field-value equals the decimal number of octets that would</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   have been sent in the payload body of a 200 (OK) response to the same</td><td> </td><td class="right">   have been sent in the payload body of a 200 (OK) response to the same</td><td class="lineno" valign="top"></td></tr>
@@ -472 +503 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   [RFC7231]).</td><td> </td><td class="right">   [RFC7231]).</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0013" /></td></tr>
+      <tr><td><a name="diff0014" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   Aside from the cases defined above, in the absence of <span class="delete">Transfer-</span></td><td> </td><td class="rblock">   Aside from the cases defined above, in the absence of</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Encoding,</span> an origin server SHOULD send a Content-Length header field</td><td> </td><td class="rblock">   <span class="insert">Transfer-Encoding,</span> an origin server SHOULD send a Content-Length</td><td class="lineno" valign="top"></td></tr>
@@ -499 +530 @@
       <tr><td class="lineno" valign="top"></td><td class="left">      Note: HTTP's use of Content-Length for message framing differs</td><td> </td><td class="right">      Note: HTTP's use of Content-Length for message framing differs</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      significantly from the same field's use in MIME, where it is an</td><td> </td><td class="right">      significantly from the same field's use in MIME, where it is an</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0014" /></td></tr>
+      <tr><td><a name="diff0015" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      optional field used only within the "message/external-body" <span class="delete">media-</span></td><td> </td><td class="rblock">      optional field used only within the "message/external-body"</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      type.</span></td><td> </td><td class="rblock">      <span class="insert">media-type.</span></td><td class="lineno" valign="top"></td></tr>
@@ -513 +544 @@
       <tr><td class="lineno" valign="top"></td><td class="left">       header fields, regardless of the header fields present in the</td><td> </td><td class="right">       header fields, regardless of the header fields present in the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 32, line 39</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 33, line 23</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 32, line 39</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 33, line 23</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">       incomplete and close the connection.</td><td> </td><td class="right">       incomplete and close the connection.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -524 +555 @@
       <tr><td class="lineno" valign="top"></td><td class="left">       connection.</td><td> </td><td class="right">       connection.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0015" /></td></tr>
+      <tr><td><a name="diff0016" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   Since there is no way to distinguish a successfully completed, <span class="delete">close-</span></td><td> </td><td class="rblock">   Since there is no way to distinguish a successfully completed,</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   delimited</span> message from a partially received message interrupted by</td><td> </td><td class="rblock">   <span class="insert">close-delimited</span> message from a partially received message interrupted</td><td class="lineno" valign="top"></td></tr>
@@ -541 +572 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   status code even though they understand the chunked transfer coding.</td><td> </td><td class="right">   status code even though they understand the chunked transfer coding.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 35, line 18</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 35, line 48</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l16" /><small>skipping to change at</small><em> page 35, line 18</em></th><th> </th><th><a name="part-r16" /><small>skipping to change at</small><em> page 35, line 48</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">                        / "gzip" ; Section 4.2.3</td><td> </td><td class="right">                        / "gzip" ; Section 4.2.3</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">                        / transfer-extension</td><td> </td><td class="right">                        / transfer-extension</td><td class="lineno" valign="top"></td></tr>
@@ -552 +583 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   All transfer-coding names are case-insensitive and ought to be</td><td> </td><td class="right">   All transfer-coding names are case-insensitive and ought to be</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   registered within the HTTP Transfer Coding registry, as defined in</td><td> </td><td class="right">   registered within the HTTP Transfer Coding registry, as defined in</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0016" /></td></tr>
+      <tr><td><a name="diff0017" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   Section 8.4.  They are used in the TE (Section 4.3) and <span class="delete">Transfer-</span></td><td> </td><td class="rblock">   Section 8.4.  They are used in the TE (Section 4.3) and</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Encoding</span> (Section 3.3.1) header fields.</td><td> </td><td class="rblock">   <span class="insert">Transfer-Encoding</span> (Section 3.3.1) header fields.</td><td class="lineno" valign="top"></td></tr>
@@ -566 +597 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   received the entire message.</td><td> </td><td class="right">   received the entire message.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l16" /><small>skipping to change at</small><em> page 36, line 9</em></th><th> </th><th><a name="part-r16" /><small>skipping to change at</small><em> page 36, line 39</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l17" /><small>skipping to change at</small><em> page 36, line 9</em></th><th> </th><th><a name="part-r17" /><small>skipping to change at</small><em> page 36, line 39</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   when a chunk with a chunk-size of zero is received, possibly followed</td><td> </td><td class="right">   when a chunk with a chunk-size of zero is received, possibly followed</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   by a trailer, and finally terminated by an empty line.</td><td> </td><td class="right">   by a trailer, and finally terminated by an empty line.</td><td class="lineno" valign="top"></td></tr>
@@ -577 +608 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   The chunked encoding allows each chunk to include zero or more chunk</td><td> </td><td class="right">   The chunked encoding allows each chunk to include zero or more chunk</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   extensions, immediately following the chunk-size, for the sake of</td><td> </td><td class="right">   extensions, immediately following the chunk-size, for the sake of</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0017" /></td></tr>
+      <tr><td><a name="diff0018" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   supplying per-chunk metadata (such as a signature or hash), <span class="delete">mid-</span></td><td> </td><td class="rblock">   supplying per-chunk metadata (such as a signature or hash),</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message</span> control information, or randomization of message body size.</td><td> </td><td class="rblock">   <span class="insert">mid-message</span> control information, or randomization of message body</td><td class="lineno" valign="top"></td></tr>
@@ -592 +623 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   the extensions.  Hence, use of chunk extensions is generally limited</td><td> </td><td class="right">   the extensions.  Hence, use of chunk extensions is generally limited</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l17" /><small>skipping to change at</small><em> page 40, line 7</em></th><th> </th><th><a name="part-r17" /><small>skipping to change at</small><em> page 40, line 41</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l18" /><small>skipping to change at</small><em> page 40, line 7</em></th><th> </th><th><a name="part-r18" /><small>skipping to change at</small><em> page 40, line 41</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">5.  Message Routing</td><td> </td><td class="right">5.  Message Routing</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -603 +634 @@
       <tr><td class="lineno" valign="top"></td><td class="left">5.1.  Identifying a Target Resource</td><td> </td><td class="right">5.1.  Identifying a Target Resource</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0018" /></td></tr>
+      <tr><td><a name="diff0019" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   HTTP is used in a wide variety of applications, ranging from <span class="delete">general-</span></td><td> </td><td class="rblock">   HTTP is used in a wide variety of applications, ranging from</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   purpose</span> computers to home appliances.  In some cases, communication</td><td> </td><td class="rblock">   <span class="insert">general-purpose</span> computers to home appliances.  In some cases,</td><td class="lineno" valign="top"></td></tr>
@@ -621 +652 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   ([RFC3986], Section 3.5).</td><td> </td><td class="right">   ([RFC3986], Section 3.5).</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l18" /><small>skipping to change at</small><em> page 43, line 48</em></th><th> </th><th><a name="part-r18" /><small>skipping to change at</small><em> page 44, line 37</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l19" /><small>skipping to change at</small><em> page 43, line 48</em></th><th> </th><th><a name="part-r19" /><small>skipping to change at</small><em> page 44, line 37</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://www.example.org/pub/WWW/&gt; would begin with:</td><td> </td><td class="right">   &lt;http://www.example.org/pub/WWW/&gt; would begin with:</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -632 +663 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   that might not have implemented Host.</td><td> </td><td class="right">   that might not have implemented Host.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0019" /></td></tr>
+      <tr><td><a name="diff0020" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   When a proxy receives a request with an absolute-form of <span class="delete">request-</span></td><td> </td><td class="rblock">   When a proxy receives a request with an absolute-form of</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   target,</span> the proxy MUST ignore the received Host header field (if any)</td><td> </td><td class="rblock">   <span class="insert">request-target,</span> the proxy MUST ignore the received Host header field</td><td class="lineno" valign="top"></td></tr>
@@ -649 +680 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   host.</td><td> </td><td class="right">   host.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l19" /><small>skipping to change at</small><em> page 46, line 18</em></th><th> </th><th><a name="part-r19" /><small>skipping to change at</small><em> page 47, line 8</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l20" /><small>skipping to change at</small><em> page 46, line 18</em></th><th> </th><th><a name="part-r20" /><small>skipping to change at</small><em> page 47, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   request message with its corresponding one or more response messages.</td><td> </td><td class="right">   request message with its corresponding one or more response messages.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   Hence, it relies on the order of response arrival to correspond</td><td> </td><td class="right">   Hence, it relies on the order of response arrival to correspond</td><td class="lineno" valign="top"></td></tr>
@@ -660 +691 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   MUST maintain a list of outstanding requests in the order sent and</td><td> </td><td class="right">   MUST maintain a list of outstanding requests in the order sent and</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   MUST associate each received response message on that connection to</td><td> </td><td class="right">   MUST associate each received response message on that connection to</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0020" /></td></tr>
+      <tr><td><a name="diff0021" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   the highest ordered request that has not yet received a final <span class="delete">(non-</span></td><td> </td><td class="rblock">   the highest ordered request that has not yet received a final</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   1xx)</span> response.</td><td> </td><td class="rblock">   <span class="insert">(non-1xx)</span> response.</td><td class="lineno" valign="top"></td></tr>
@@ -674 +705 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   intermediary can enhance (or interfere) with either direction of the</td><td> </td><td class="right">   intermediary can enhance (or interfere) with either direction of the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l20" /><small>skipping to change at</small><em> page 52, line 50</em></th><th> </th><th><a name="part-r20" /><small>skipping to change at</small><em> page 54, line 8</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l21" /><small>skipping to change at</small><em> page 52, line 50</em></th><th> </th><th><a name="part-r21" /><small>skipping to change at</small><em> page 54, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">6.3.1.  Retrying Requests</td><td> </td><td class="right">6.3.1.  Retrying Requests</td><td class="lineno" valign="top"></td></tr>
@@ -685 +716 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   new connection and automatically retransmit an aborted sequence of</td><td> </td><td class="right">   new connection and automatically retransmit an aborted sequence of</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   requests if all of those requests have idempotent methods (Section</td><td> </td><td class="right">   requests if all of those requests have idempotent methods (Section</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0021" /></td></tr>
+      <tr><td><a name="diff0022" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   4.2.2 of [RFC7231]).  A proxy MUST NOT automatically retry <span class="delete">non-</span></td><td> </td><td class="rblock">   4.2.2 of [RFC7231]).  A proxy MUST NOT automatically retry</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   idempotent</span> requests.</td><td> </td><td class="rblock">   <span class="insert">non-idempotent</span> requests.</td><td class="lineno" valign="top"></td></tr>
@@ -699 +730 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   from partial failure conditions by checking the target resource</td><td> </td><td class="right">   from partial failure conditions by checking the target resource</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l21" /><small>skipping to change at</small><em> page 54, line 21</em></th><th> </th><th><a name="part-r21" /><small>skipping to change at</small><em> page 55, line 28</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l22" /><small>skipping to change at</small><em> page 54, line 21</em></th><th> </th><th><a name="part-r22" /><small>skipping to change at</small><em> page 55, line 28</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   A client ought to limit the number of simultaneous open connections</td><td> </td><td class="right">   A client ought to limit the number of simultaneous open connections</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   that it maintains to a given server.</td><td> </td><td class="right">   that it maintains to a given server.</td><td class="lineno" valign="top"></td></tr>
@@ -710 +741 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   Multiple connections are typically used to avoid the "head-of-line</td><td> </td><td class="right">   Multiple connections are typically used to avoid the "head-of-line</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0022" /></td></tr>
+      <tr><td><a name="diff0023" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   blocking" problem, wherein a request that takes significant <span class="delete">server-</span></td><td> </td><td class="rblock">   blocking" problem, wherein a request that takes significant</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   side</span> processing and/or has a large payload blocks subsequent requests</td><td> </td><td class="rblock">   <span class="insert">server-side</span> processing and/or has a large payload blocks subsequent</td><td class="lineno" valign="top"></td></tr>
@@ -726 +757 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   no longer maintain an inactive connection.  Proxy servers might make</td><td> </td><td class="right">   no longer maintain an inactive connection.  Proxy servers might make</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l22" /><small>skipping to change at</small><em> page 58, line 32</em></th><th> </th><th><a name="part-r22" /><small>skipping to change at</small><em> page 59, line 48</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l23" /><small>skipping to change at</small><em> page 58, line 32</em></th><th> </th><th><a name="part-r23" /><small>skipping to change at</small><em> page 59, line 48</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   the family of Hypertext Transfer Protocols, as defined by the HTTP</td><td> </td><td class="right">   the family of Hypertext Transfer Protocols, as defined by the HTTP</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   version rules of Section 2.6 and future updates to this</td><td> </td><td class="right">   version rules of Section 2.6 and future updates to this</td><td class="lineno" valign="top"></td></tr>
@@ -737 +768 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   readability in the definitions of some header field values.</td><td> </td><td class="right">   readability in the definitions of some header field values.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0023" /></td></tr>
+      <tr><td><a name="diff0024" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   A construct "#" is defined, similar to "*", for defining <span class="delete">comma-</span></td><td> </td><td class="rblock">   A construct "#" is defined, similar to "*", for defining</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   delimited</span> lists of elements.  The full form is "&lt;n&gt;#&lt;m&gt;element"</td><td> </td><td class="rblock">   <span class="insert">comma-delimited</span> lists of elements.  The full form is "&lt;n&gt;#&lt;m&gt;element"</td><td class="lineno" valign="top"></td></tr>
@@ -751 +782 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   and:</td><td> </td><td class="right">   and:</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l23" /><small>skipping to change at</small><em> page 66, line 18</em></th><th> </th><th><a name="part-r23" /><small>skipping to change at</small><em> page 67, line 45</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l24" /><small>skipping to change at</small><em> page 66, line 18</em></th><th> </th><th><a name="part-r24" /><small>skipping to change at</small><em> page 67, line 45</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   and users of known security considerations relevant to HTTP message</td><td> </td><td class="right">   and users of known security considerations relevant to HTTP message</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   syntax, parsing, and routing.  Security considerations about HTTP</td><td> </td><td class="right">   syntax, parsing, and routing.  Security considerations about HTTP</td><td class="lineno" valign="top"></td></tr>
@@ -762 +793 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   identified within the target URI to be the most appropriate response</td><td> </td><td class="right">   identified within the target URI to be the most appropriate response</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   for that request given the state of the target resource at the time</td><td> </td><td class="right">   for that request given the state of the target resource at the time</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0024" /></td></tr>
+      <tr><td><a name="diff0025" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   of response message origination.  Providing a response from a <span class="delete">non-</span></td><td> </td><td class="rblock">   of response message origination.  Providing a response from a</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   authoritative</span> source, such as a shared cache, is often useful to</td><td> </td><td class="rblock">   <span class="insert">non-authoritative</span> source, such as a shared cache, is often useful to</td><td class="lineno" valign="top"></td></tr>
@@ -776 +807 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   prior to making an action, by prominently distinguishing (or</td><td> </td><td class="right">   prior to making an action, by prominently distinguishing (or</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l24" /><small>skipping to change at</small><em> page 69, line 22</em></th><th> </th><th><a name="part-r24" /><small>skipping to change at</small><em> page 70, line 48</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l25" /><small>skipping to change at</small><em> page 69, line 22</em></th><th> </th><th><a name="part-r25" /><small>skipping to change at</small><em> page 70, line 48</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   usage.</td><td> </td><td class="right">   usage.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -787 +818 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   HTTP does not define a specific mechanism for ensuring message</td><td> </td><td class="right">   HTTP does not define a specific mechanism for ensuring message</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   integrity, instead relying on the error-detection ability of</td><td> </td><td class="right">   integrity, instead relying on the error-detection ability of</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0025" /></td></tr>
+      <tr><td><a name="diff0026" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   underlying transport protocols and the use of length or <span class="delete">chunk-</span></td><td> </td><td class="rblock">   underlying transport protocols and the use of length or</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   delimited</span> framing to detect completeness.  Additional integrity</td><td> </td><td class="rblock">   <span class="insert">chunk-delimited</span> framing to detect completeness.  Additional integrity</td><td class="lineno" valign="top"></td></tr>
@@ -801 +832 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   detecting and reporting failures of message integrity such that those</td><td> </td><td class="right">   detecting and reporting failures of message integrity such that those</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l25" /><small>skipping to change at</small><em> page 70, line 27</em></th><th> </th><th><a name="part-r25" /><small>skipping to change at</small><em> page 72, line 7</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l26" /><small>skipping to change at</small><em> page 70, line 27</em></th><th> </th><th><a name="part-r26" /><small>skipping to change at</small><em> page 72, line 7</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   constrained by laws and regulations.  Log information needs to be</td><td> </td><td class="right">   constrained by laws and regulations.  Log information needs to be</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   securely stored and appropriate guidelines followed for its analysis.</td><td> </td><td class="right">   securely stored and appropriate guidelines followed for its analysis.</td><td class="lineno" valign="top"></td></tr>
@@ -812 +843 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   To minimize the risk of theft or accidental publication, log</td><td> </td><td class="right">   To minimize the risk of theft or accidental publication, log</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   information ought to be purged of personally identifiable</td><td> </td><td class="right">   information ought to be purged of personally identifiable</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0026" /></td></tr>
+      <tr><td><a name="diff0027" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   information, including user identifiers, IP addresses, and <span class="delete">user-</span></td><td> </td><td class="rblock">   information, including user identifiers, IP addresses, and</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   provided</span> query parameters, as soon as that information is no longer</td><td> </td><td class="rblock">   <span class="insert">user-provided</span> query parameters, as soon as that information is no</td><td class="lineno" valign="top"></td></tr>
@@ -828 +859 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   Group Chair.</td><td> </td><td class="right">   Group Chair.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l26" /><small>skipping to change at</small><em> page 82, line 20</em></th><th> </th><th><a name="part-r26" /><small>skipping to change at</small><em> page 85, line 8</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l27" /><small>skipping to change at</small><em> page 77, line 24</em></th><th> </th><th><a name="part-r27" /><small>skipping to change at</small><em> page 79, line 41</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   hung connection.</td><td> </td><td class="right">   hung connection.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   One attempted solution was the introduction of a Proxy-Connection</td><td> </td><td class="right">   One attempted solution was the introduction of a Proxy-Connection</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   header field, targeted specifically at proxies.  In practice, this</td><td> </td><td class="right">   header field, targeted specifically at proxies.  In practice, this</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   was also unworkable, because proxies are often deployed in multiple</td><td> </td><td class="right">   was also unworkable, because proxies are often deployed in multiple</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   layers, bringing about the same problem discussed above.</td><td> </td><td class="right">   layers, bringing about the same problem discussed above.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   As a result, clients are encouraged not to send the Proxy-Connection</td><td> </td><td class="right">   As a result, clients are encouraged not to send the Proxy-Connection</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   header field in any requests.</td><td> </td><td class="right">   header field in any requests.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0028" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   Clients are also encouraged to consider the use of Connection: <span class="delete">keep-</span></td><td> </td><td class="rblock">   Clients are also encouraged to consider the use of Connection:</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   alive</span> in requests carefully; while they can enable persistent</td><td> </td><td class="rblock">   <span class="insert">keep-alive</span> in requests carefully; while they can enable persistent</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   connections with HTTP/1.0 servers, clients using them will need to</td><td> </td><td class="right">   connections with HTTP/1.0 servers, clients using them will need to</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   monitor the connection for "hung" requests (which indicate that the</td><td> </td><td class="right">   monitor the connection for "hung" requests (which indicate that the</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   client ought stop sending the header field), and this mechanism ought</td><td> </td><td class="right">   client ought stop sending the header field), and this mechanism ought</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   not be used by clients at all when a proxy is being used.</td><td> </td><td class="right">   not be used by clients at all when a proxy is being used.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">A.1.3.  Introduction of Transfer-Encoding</td><td> </td><td class="right">A.1.3.  Introduction of Transfer-Encoding</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP/1.1 introduces the Transfer-Encoding header field</td><td> </td><td class="right">   HTTP/1.1 introduces the Transfer-Encoding header field</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 3.3.1).  Transfer codings need to be decoded prior to</td><td> </td><td class="right">   (Section 3.3.1).  Transfer codings need to be decoded prior to</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   forwarding an HTTP message over a MIME-compliant protocol.</td><td> </td><td class="right">   forwarding an HTTP message over a MIME-compliant protocol.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l28" /><small>skipping to change at</small><em> page 79, line 4</em></th><th> </th><th><a name="part-r28" /><small>skipping to change at</small><em> page 81, line 18</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   The "identity" transfer coding token has been removed.  (Sections 3.3</td><td> </td><td class="right">   The "identity" transfer coding token has been removed.  (Sections 3.3</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   and 4)</td><td> </td><td class="right">   and 4)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   Chunk length does not include the count of the octets in the chunk</td><td> </td><td class="right">   Chunk length does not include the count of the octets in the chunk</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   header and trailer.  Line folding in chunk extensions is disallowed.</td><td> </td><td class="right">   header and trailer.  Line folding in chunk extensions is disallowed.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 4.1)</td><td> </td><td class="right">   (Section 4.1)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   The meaning of the "deflate" content coding has been clarified.</td><td> </td><td class="right">   The meaning of the "deflate" content coding has been clarified.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 4.2.2)</td><td> </td><td class="right">   (Section 4.2.2)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0029" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                                                                         </span></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   The segment + query components of RFC 3986 have been used to define</td><td> </td><td class="right">   The segment + query components of RFC 3986 have been used to define</td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0030" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   the request-target, instead of abs_path from RFC 1808.  The <span class="delete">asterisk-</span></td><td> </td><td class="rblock">   the request-target, instead of abs_path from RFC 1808.  The</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   form</span> of the request-target is only allowed with the OPTIONS method.</td><td> </td><td class="rblock">   <span class="insert">asterisk-form</span> of the request-target is only allowed with the OPTIONS</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   (Section 5.3)</td><td> </td><td class="rblock">   method.  (Section 5.3)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   The term "Effective Request URI" has been introduced.  (Section 5.5)</td><td> </td><td class="right">   The term "Effective Request URI" has been introduced.  (Section 5.5)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   Gateways do not need to generate Via header fields anymore.</td><td> </td><td class="right">   Gateways do not need to generate Via header fields anymore.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 5.7.1)</td><td> </td><td class="right">   (Section 5.7.1)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   Exactly when "close" connection options have to be sent has been</td><td> </td><td class="right">   Exactly when "close" connection options have to be sent has been</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   clarified.  Also, "hop-by-hop" header fields are required to appear</td><td> </td><td class="right">   clarified.  Also, "hop-by-hop" header fields are required to appear</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   in the Connection header field; just because they're defined as hop-</td><td> </td><td class="right">   in the Connection header field; just because they're defined as hop-</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   by-hop in this specification doesn't exempt them.  (Section 6.1)</td><td> </td><td class="right">   by-hop in this specification doesn't exempt them.  (Section 6.1)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l29" /><small>skipping to change at</small><em> page 82, line 20</em></th><th> </th><th><a name="part-r29" /><small>skipping to change at</small><em> page 85, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   transfer-coding = "chunked" / "compress" / "deflate" / "gzip" /</td><td> </td><td class="right">   transfer-coding = "chunked" / "compress" / "deflate" / "gzip" /</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">    transfer-extension</td><td> </td><td class="right">    transfer-extension</td><td class="lineno" valign="top"></td></tr>
@@ -839 +924 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0027" /></td></tr>
+      <tr><td><a name="diff0031" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      absolute-form (of request-target)  4<span class="delete">1</span></td><td> </td><td class="rblock">      absolute-form (of request-target)  4<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      accelerator  10</td><td> </td><td class="right">      accelerator  10</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0028" /></td></tr>
+      <tr><td><a name="diff0032" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      application/http Media Type  <span class="delete">62</span></td><td> </td><td class="rblock">      application/http Media Type  <span class="insert">63</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      asterisk-form (of request-target)  <span class="delete">42</span></td><td> </td><td class="rblock">      asterisk-form (of request-target)  <span class="insert">43</span></td><td class="lineno" valign="top"></td></tr>
@@ -853 +938 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   C</td><td> </td><td class="right">   C</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      cache  11</td><td> </td><td class="right">      cache  11</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0029" /></td></tr>
+      <tr><td><a name="diff0033" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      cacheable  1<span class="delete">1</span></td><td> </td><td class="rblock">      cacheable  1<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      captive portal  11</td><td> </td><td class="right">      captive portal  11</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0030" /></td></tr>
+      <tr><td><a name="diff0034" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      chunked (Coding Format)  28, 3<span class="delete">1, 35</span></td><td> </td><td class="rblock">      chunked (Coding Format)  28, 3<span class="insert">2, 36</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      client  7</td><td> </td><td class="right">      client  7</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0031" /></td></tr>
+      <tr><td><a name="diff0035" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      close  5<span class="delete">0, 55</span></td><td> </td><td class="rblock">      close  5<span class="insert">1, 56</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      compress (Coding Format)  38</td><td> </td><td class="right">      compress (Coding Format)  38</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      connection  7</td><td> </td><td class="right">      connection  7</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0032" /></td></tr>
+      <tr><td><a name="diff0036" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Connection header field  <span class="delete">50, 55</span></td><td> </td><td class="rblock">      Connection header field  <span class="insert">51, 56</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Content-Length header field  <span class="delete">29</span></td><td> </td><td class="rblock">      Content-Length header field  <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
@@ -869 +954 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   D</td><td> </td><td class="right">   D</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      deflate (Coding Format)  38</td><td> </td><td class="right">      deflate (Coding Format)  38</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0033" /></td></tr>
+      <tr><td><a name="diff0037" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Delimiters  <span class="delete">26</span></td><td> </td><td class="rblock">      Delimiters  <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      downstream  <span class="delete">9</span></td><td> </td><td class="rblock">      downstream  <span class="insert">10</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   E</td><td> </td><td class="right">   E</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0034" /></td></tr>
+      <tr><td><a name="diff0038" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      effective request URI  4<span class="delete">4</span></td><td> </td><td class="rblock">      effective request URI  4<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -880 +965 @@
       <tr><td class="lineno" valign="top"></td><td class="left">      gateway  10</td><td> </td><td class="right">      gateway  10</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      Grammar</td><td> </td><td class="right">      Grammar</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0035" /></td></tr>
+      <tr><td><a name="diff0039" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         absolute-form  4<span class="delete">1</span></td><td> </td><td class="rblock">         absolute-form  4<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         absolute-path  16</td><td> </td><td class="right">         absolute-path  16</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         absolute-URI  16</td><td> </td><td class="right">         absolute-URI  16</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         ALPHA  6</td><td> </td><td class="right">         ALPHA  6</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0036" /></td></tr>
+      <tr><td><a name="diff0040" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         asterisk-form  41<span class="delete">-42</span></td><td> </td><td class="rblock">         asterisk-form  41<span class="insert">, 43</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         authority  16</td><td> </td><td class="right">         authority  16</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0037" /></td></tr>
+      <tr><td><a name="diff0041" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         authority-form  <span class="delete">41-42</span></td><td> </td><td class="rblock">         authority-form  <span class="insert">42-43</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         BWS  <span class="delete">24</span></td><td> </td><td class="rblock">         BWS  <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
@@ -896 +981 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         chunk-ext-name  36</td><td> </td><td class="right">         chunk-ext-name  36</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         chunk-ext-val  36</td><td> </td><td class="right">         chunk-ext-val  36</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0038" /></td></tr>
+      <tr><td><a name="diff0042" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         chunk-size  <span class="delete">35</span></td><td> </td><td class="rblock">         chunk-size  <span class="insert">36</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         chunked-body  <span class="delete">35-36</span></td><td> </td><td class="rblock">         chunked-body  <span class="insert">36</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         comment  27</td><td> </td><td class="right">         comment  27</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0039" /></td></tr>
+      <tr><td><a name="diff0043" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         Connection  <span class="delete">50</span></td><td> </td><td class="rblock">         Connection  <span class="insert">51</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         connection-option  <span class="delete">50</span></td><td> </td><td class="rblock">         connection-option  <span class="insert">51</span></td><td class="lineno" valign="top"></td></tr>
@@ -910 +995 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         DIGIT  6</td><td> </td><td class="right">         DIGIT  6</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         DQUOTE  6</td><td> </td><td class="right">         DQUOTE  6</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0040" /></td></tr>
+      <tr><td><a name="diff0044" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         field-content  <span class="delete">22</span></td><td> </td><td class="rblock">         field-content  <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         field-name  <span class="delete">22, 39</span></td><td> </td><td class="rblock">         field-name  <span class="insert">23, 40</span></td><td class="lineno" valign="top"></td></tr>
@@ -916 +1001 @@
       <tr><td class="lineno" valign="top"></td><td class="lblock">         field-vchar  <span class="delete">22</span></td><td> </td><td class="rblock">         field-vchar  <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         fragment  16</td><td> </td><td class="right">         fragment  16</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0041" /></td></tr>
+      <tr><td><a name="diff0045" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         header-field  2<span class="delete">2, 36</span></td><td> </td><td class="rblock">         header-field  2<span class="insert">3, 37</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         HEXDIG  6</td><td> </td><td class="right">         HEXDIG  6</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0042" /></td></tr>
+      <tr><td><a name="diff0046" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         Host  4<span class="delete">3</span></td><td> </td><td class="rblock">         Host  4<span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         HTAB  6</td><td> </td><td class="right">         HTAB  6</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         HTTP-message  19</td><td> </td><td class="right">         HTTP-message  19</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0043" /></td></tr>
+      <tr><td><a name="diff0047" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         HTTP-name  <span class="delete">13</span></td><td> </td><td class="rblock">         HTTP-name  <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         http-URI  <span class="delete">16</span></td><td> </td><td class="rblock">         http-URI  <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         HTTP-version  <span class="delete">13</span></td><td> </td><td class="rblock">         HTTP-version  <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         https-URI  18</td><td> </td><td class="right">         https-URI  18</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0044" /></td></tr>
+      <tr><td><a name="diff0048" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         last-chunk  3<span class="delete">5</span></td><td> </td><td class="rblock">         last-chunk  3<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         LF  6</td><td> </td><td class="right">         LF  6</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0045" /></td></tr>
+      <tr><td><a name="diff0049" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         message-body  2<span class="delete">7</span></td><td> </td><td class="rblock">         message-body  2<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         method  21</td><td> </td><td class="right">         method  21</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0046" /></td></tr>
+      <tr><td><a name="diff0050" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         obs-fold  2<span class="delete">2</span></td><td> </td><td class="rblock">         obs-fold  2<span class="insert">3</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         obs-text  27</td><td> </td><td class="right">         obs-text  27</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         OCTET  6</td><td> </td><td class="right">         OCTET  6</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0047" /></td></tr>
+      <tr><td><a name="diff0051" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         origin-form  <span class="delete">41</span></td><td> </td><td class="rblock">         origin-form  <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         OWS  <span class="delete">24</span></td><td> </td><td class="rblock">         OWS  <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
@@ -950 +1035 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         quoted-pair  27</td><td> </td><td class="right">         quoted-pair  27</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         quoted-string  27</td><td> </td><td class="right">         quoted-string  27</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0048" /></td></tr>
+      <tr><td><a name="diff0052" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         rank  3<span class="delete">8</span></td><td> </td><td class="rblock">         rank  3<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         reason-phrase  22</td><td> </td><td class="right">         reason-phrase  22</td><td class="lineno" valign="top"></td></tr>
@@ -957 +1042 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         request-line  21</td><td> </td><td class="right">         request-line  21</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         request-target  41</td><td> </td><td class="right">         request-target  41</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0049" /></td></tr>
+      <tr><td><a name="diff0053" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         RWS  2<span class="delete">4</span></td><td> </td><td class="rblock">         RWS  2<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         scheme  16</td><td> </td><td class="right">         scheme  16</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         segment  16</td><td> </td><td class="right">         segment  16</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         SP  6</td><td> </td><td class="right">         SP  6</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0050" /></td></tr>
+      <tr><td><a name="diff0054" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         start-line  2<span class="delete">0</span></td><td> </td><td class="rblock">         start-line  2<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         status-code  22</td><td> </td><td class="right">         status-code  22</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         status-line  22</td><td> </td><td class="right">         status-line  22</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0051" /></td></tr>
+      <tr><td><a name="diff0055" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         t-codings  <span class="delete">38</span></td><td> </td><td class="rblock">         t-codings  <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         t-ranking  <span class="delete">38</span></td><td> </td><td class="rblock">         t-ranking  <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
@@ -978 +1063 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         transfer-extension  35</td><td> </td><td class="right">         transfer-extension  35</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         transfer-parameter  35</td><td> </td><td class="right">         transfer-parameter  35</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0052" /></td></tr>
+      <tr><td><a name="diff0056" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         Upgrade  5<span class="delete">6</span></td><td> </td><td class="rblock">         Upgrade  5<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         uri-host  16</td><td> </td><td class="right">         uri-host  16</td><td class="lineno" valign="top"></td></tr>
@@ -984 +1069 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         VCHAR  6</td><td> </td><td class="right">         VCHAR  6</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         Via  47</td><td> </td><td class="right">         Via  47</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0053" /></td></tr>
+      <tr><td><a name="diff0057" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      gzip (Coding Format)  3<span class="delete">8</span></td><td> </td><td class="rblock">      gzip (Coding Format)  3<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -991 +1076 @@
       <tr><td class="lineno" valign="top"></td><td class="left">      header section  19</td><td> </td><td class="right">      header section  19</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      headers  19</td><td> </td><td class="right">      headers  19</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0054" /></td></tr>
+      <tr><td><a name="diff0058" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Host header field  <span class="delete">43</span></td><td> </td><td class="rblock">      Host header field  <span class="insert">44</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      http URI scheme  <span class="delete">16</span></td><td> </td><td class="rblock">      http URI scheme  <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
@@ -1003 +1088 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   M</td><td> </td><td class="right">   M</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      Media Type</td><td> </td><td class="right">      Media Type</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0055" /></td></tr>
+      <tr><td><a name="diff0059" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         application/http  <span class="delete">62</span></td><td> </td><td class="rblock">         application/http  <span class="insert">63</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         message/http  <span class="delete">61</span></td><td> </td><td class="rblock">         message/http  <span class="insert">62</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      message  7</td><td> </td><td class="right">      message  7</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0056" /></td></tr>
+      <tr><td><a name="diff0060" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      message/http Media Type  6<span class="delete">1</span></td><td> </td><td class="rblock">      message/http Media Type  6<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      method  21</td><td> </td><td class="right">      method  21</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   N</td><td> </td><td class="right">   N</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0057" /></td></tr>
+      <tr><td><a name="diff0061" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      non-transforming proxy  4<span class="delete">8</span></td><td> </td><td class="rblock">      non-transforming proxy  4<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   O</td><td> </td><td class="right">   O</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      origin server  7</td><td> </td><td class="right">      origin server  7</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0058" /></td></tr>
+      <tr><td><a name="diff0062" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      origin-form (of request-target)  <span class="delete">41</span></td><td> </td><td class="rblock">      origin-form (of request-target)  <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      outbound  <span class="delete">9</span></td><td> </td><td class="rblock">      outbound  <span class="insert">10</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   P</td><td> </td><td class="right">   P</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0059" /></td></tr>
+      <tr><td><a name="diff0063" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      phishing  6<span class="delete">6</span></td><td> </td><td class="rblock">      phishing  6<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      proxy  10</td><td> </td><td class="right">      proxy  10</td><td class="lineno" valign="top"></td></tr>
@@ -1042 +1127 @@
       <tr><td class="lineno" valign="top"></td><td class="left">      target resource  40</td><td> </td><td class="right">      target resource  40</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      target URI  40</td><td> </td><td class="right">      target URI  40</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0060" /></td></tr>
+      <tr><td><a name="diff0064" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      TE header field  <span class="delete">38</span></td><td> </td><td class="rblock">      TE header field  <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Trailer header field  <span class="delete">39</span></td><td> </td><td class="rblock">      Trailer header field  <span class="insert">40</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      Transfer-Encoding header field  28</td><td> </td><td class="right">      Transfer-Encoding header field  28</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0061" /></td></tr>
+      <tr><td><a name="diff0065" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      transforming proxy  4<span class="delete">8</span></td><td> </td><td class="rblock">      transforming proxy  4<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      transparent proxy  11</td><td> </td><td class="right">      transparent proxy  11</td><td class="lineno" valign="top"></td></tr>
@@ -1052 +1137 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   U</td><td> </td><td class="right">   U</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0062" /></td></tr>
+      <tr><td><a name="diff0066" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Upgrade header field  5<span class="delete">6</span></td><td> </td><td class="rblock">      Upgrade header field  5<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      upstream  9</td><td> </td><td class="right">      upstream  9</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      URI scheme</td><td> </td><td class="right">      URI scheme</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0063" /></td></tr>
+      <tr><td><a name="diff0067" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         http  <span class="delete">16</span></td><td> </td><td class="rblock">         http  <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         https  <span class="delete">18</span></td><td> </td><td class="rblock">         https  <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
@@ -1062 +1147 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   V</td><td> </td><td class="right">   V</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0064" /></td></tr>
+      <tr><td><a name="diff0068" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Via header field  4<span class="delete">6</span></td><td> </td><td class="rblock">      Via header field  4<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -1076 +1161 @@
 
      <tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
-     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 64 change blocks.&nbsp;</a></th></tr>
-     <tr class="stats"><td></td><th><i>260 lines changed or deleted</i></th><th><i> </i></th><th><i>248 lines changed or added</i></th><td></td></tr>
+     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 68 change blocks.&nbsp;</a></th></tr>
+     <tr class="stats"><td></td><th><i>273 lines changed or deleted</i></th><th><i> </i></th><th><i>262 lines changed or added</i></th><td></td></tr>
      <tr><td colspan="5" align="center" class="small"><br/>This html diff was produced by rfcdiff 1.38. The latest version is available from <a href="http://www.tools.ietf.org/tools/rfcdiff/" >http://tools.ietf.org/tools/rfcdiff/</a> </td></tr>
    </table>

draft-ietf-httpbis/latest/auth48/rfc7230.txt

@@ -1621 +1621 @@
    message body.
 
-   Unlike Content-Encoding (Section 3.1.2.1 of [RFC7231]), Transfer-
-   Encoding is a property of the message, not of the representation, and
-   any recipient along the request/response chain MAY decode the
-   received transfer coding(s) or apply additional transfer coding(s) to
-   the message body, assuming that corresponding changes are made to the
-   Transfer-Encoding field-value.  Additional information about the
-   encoding parameters can be provided by other header fields not
-   defined by this specification.
+   Unlike Content-Encoding (Section 3.1.2.1 of [RFC7231]),
+   Transfer-Encoding is a property of the message, not of the
+   representation, and any recipient along the request/response chain
+   MAY decode the received transfer coding(s) or apply additional
+   transfer coding(s) to the message body, assuming that corresponding
+   changes are made to the Transfer-Encoding field-value.  Additional
+   information about the encoding parameters can be provided by other
+   header fields not defined by this specification.
 
    Transfer-Encoding MAY be sent in a response to a HEAD request or in a
@@ -4487 +4487 @@
    header field in any requests.
 
-   Clients are also encouraged to consider the use of Connection: keep-
-   alive in requests carefully; while they can enable persistent
+   Clients are also encouraged to consider the use of Connection:
+   keep-alive in requests carefully; while they can enable persistent
    connections with HTTP/1.0 servers, clients using them will need to
    monitor the connection for "hung" requests (which indicate that the
@@ -4581 +4581 @@
 
    The segment + query components of RFC 3986 have been used to define
-   the request-target, instead of abs_path from RFC 1808.  The asterisk-
-   form of the request-target is only allowed with the OPTIONS method.
-   (Section 5.3)
+   the request-target, instead of abs_path from RFC 1808.  The
+   asterisk-form of the request-target is only allowed with the OPTIONS
+   method.  (Section 5.3)
 
    The term "Effective Request URI" has been introduced.  (Section 5.5)

draft-ietf-httpbis/latest/auth48/rfc7232.abdiff.txt

@@ -38 +38 @@
     document authors.  All rights reserved.
 
+
+INTRODUCTION, paragraph 13:
+OLD:
+
+    1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
+      1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4
+      1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4
+    2.  Validators . . . . . . . . . . . . . . . . . . . . . . . . . .  5
+      2.1.  Weak versus Strong . . . . . . . . . . . . . . . . . . . .  5
+      2.2.  Last-Modified  . . . . . . . . . . . . . . . . . . . . . .  7
+        2.2.1.  Generation . . . . . . . . . . . . . . . . . . . . . .  7
+        2.2.2.  Comparison . . . . . . . . . . . . . . . . . . . . . .  8
+      2.3.  ETag . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
+        2.3.1.  Generation . . . . . . . . . . . . . . . . . . . . . . 10
+        2.3.2.  Comparison . . . . . . . . . . . . . . . . . . . . . . 10
+        2.3.3.  Example: Entity-Tags Varying on Content-Negotiated
+                Resources  . . . . . . . . . . . . . . . . . . . . . . 11
+      2.4.  When to Use Entity-Tags and Last-Modified Dates  . . . . . 12
+    3.  Precondition Header Fields . . . . . . . . . . . . . . . . . . 13
+      3.1.  If-Match . . . . . . . . . . . . . . . . . . . . . . . . . 13
+      3.2.  If-None-Match  . . . . . . . . . . . . . . . . . . . . . . 14
+      3.3.  If-Modified-Since  . . . . . . . . . . . . . . . . . . . . 15
+      3.4.  If-Unmodified-Since  . . . . . . . . . . . . . . . . . . . 16
+      3.5.  If-Range . . . . . . . . . . . . . . . . . . . . . . . . . 18
+    4.  Status Code Definitions  . . . . . . . . . . . . . . . . . . . 18
+      4.1.  304 Not Modified . . . . . . . . . . . . . . . . . . . . . 18
+      4.2.  412 Precondition Failed  . . . . . . . . . . . . . . . . . 18
+    5.  Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . 19
+    6.  Precedence . . . . . . . . . . . . . . . . . . . . . . . . . . 19
+    7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 21
+      7.1.  Status Code Registration . . . . . . . . . . . . . . . . . 21
+      7.2.  Header Field Registration  . . . . . . . . . . . . . . . . 21
+    8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 22
+    9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 22
+    10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 23
+      10.1. Normative References . . . . . . . . . . . . . . . . . . . 23
+      10.2. Informative References . . . . . . . . . . . . . . . . . . 23
+    Appendix A.  Changes from RFC 2616 . . . . . . . . . . . . . . . . 23
+    Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . 24
+    Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 24
+    Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
+
+NEW:
+
+    1. Introduction ....................................................4
+       1.1. Conformance and Error Handling .............................4
+       1.2. Syntax Notation ............................................4
+    2. Validators ......................................................5
+       2.1. Weak versus Strong .........................................5
+       2.2. Last-Modified ..............................................7
+            2.2.1. Generation ..........................................7
+            2.2.2. Comparison ..........................................8
+       2.3. ETag .......................................................9
+            2.3.1. Generation .........................................10
+            2.3.2. Comparison .........................................10
+            2.3.3. Example: Entity-Tags Varying on
+                   Content-Negotiated Resources .......................11
+       2.4. When to Use Entity-Tags and Last-Modified Dates ...........12
+    3. Precondition Header Fields .....................................13
+       3.1. If-Match ..................................................13
+       3.2. If-None-Match .............................................14
+       3.3. If-Modified-Since .........................................16
+       3.4. If-Unmodified-Since .......................................17
+       3.5. If-Range ..................................................18
+    4. Status Code Definitions ........................................18
+       4.1. 304 Not Modified ..........................................18
+       4.2. 412 Precondition Failed ...................................19
+    5. Evaluation .....................................................19
+    6. Precedence .....................................................20
+    7. IANA Considerations ............................................22
+       7.1. Status Code Registration ..................................22
+       7.2. Header Field Registration .................................22
+    8. Security Considerations ........................................22
+    9. Acknowledgments ................................................23
+    10. References ....................................................24
+       10.1. Normative References .....................................24
+       10.2. Informative References ...................................24
+    Appendix A. Changes from RFC 2616 .................................25
+    Appendix B. Imported ABNF .........................................25
+    Appendix C. Collected ABNF ........................................26
+    Index .............................................................27
+
+
+Section 1., paragraph 2:
+OLD:
+
+    Conditional GET requests are the most efficient mechanism for HTTP
+    cache updates [RFC7234].  Conditionals can also be applied to state-
+    changing methods, such as PUT and DELETE, to prevent the "lost
+    update" problem: one client accidentally overwriting the work of
+    another client that has been acting in parallel.
+
+NEW:
+
+    Conditional GET requests are the most efficient mechanism for HTTP
+    cache updates [RFC7234].  Conditionals can also be applied to
+    state-changing methods, such as PUT and DELETE, to prevent the "lost
+    update" problem: one client accidentally overwriting the work of
+    another client that has been acting in parallel.
+
+
+Section 2.2.2., paragraph 5:
+OLD:
+
+    o  The validator is about to be used by a client in an If-Modified-
+       Since, If-Unmodified-Since, or If-Range header field, because the
+       client has a cache entry for the associated representation, and
+
+NEW:
+
+    o  The validator is about to be used by a client in an
+       If-Modified-Since, If-Unmodified-Since, or If-Range header field,
+       because the client has a cache entry for the associated
+       representation, and
+
+
+Section 2.2.2., paragraph 12:
+OLD:
+
+    This method relies on the fact that if two different responses were
+    sent by the origin server during the same second, but both had the
+    same Last-Modified time, then at least one of those responses would
+    have a Date value equal to its Last-Modified time.  The arbitrary 60-
+    second limit guards against the possibility that the Date and Last-
+    Modified values are generated from different clocks or at somewhat
+    different times during the preparation of the response.  An
+    implementation MAY use a value larger than 60 seconds, if it is
+    believed that 60 seconds is too short.
+
+NEW:
+
+    This method relies on the fact that if two different responses were
+    sent by the origin server during the same second, but both had the
+    same Last-Modified time, then at least one of those responses would
+    have a Date value equal to its Last-Modified time.  The arbitrary
+    60-second limit guards against the possibility that the Date and
+    Last-Modified values are generated from different clocks or at
+    somewhat different times during the preparation of the response.  An
+    implementation MAY use a value larger than 60 seconds, if it is
+    believed that 60 seconds is too short.
+
+
+Section 2.3.2., paragraph 3:
+OLD:
+
+    o  Weak comparison: two entity-tags are equivalent if their opaque-
+       tags match character-by-character, regardless of either or both
+       being tagged as "weak".
+
+NEW:
+
+    o  Weak comparison: two entity-tags are equivalent if their
+       opaque-tags match character-by-character, regardless of either or
+       both being tagged as "weak".
+
+
+Section 2.4., paragraph 8:
+OLD:
+
+    o  SHOULD send the Last-Modified value in non-subrange cache
+       validation requests (using If-Modified-Since) if only a Last-
+       Modified value has been provided by the origin server.
+
+NEW:
+
+    o  SHOULD send the Last-Modified value in non-subrange cache
+       validation requests (using If-Modified-Since) if only a
+       Last-Modified value has been provided by the origin server.
+
+
+Section 3.3., paragraph 5:
+OLD:
+
+    A recipient MUST ignore If-Modified-Since if the request contains an
+    If-None-Match header field; the condition in If-None-Match is
+    considered to be a more accurate replacement for the condition in If-
+    Modified-Since, and the two are only combined for the sake of
+    interoperating with older intermediaries that might not implement If-
+    None-Match.
+
+NEW:
+
+    A recipient MUST ignore If-Modified-Since if the request contains an
+    If-None-Match header field; the condition in If-None-Match is
+    considered to be a more accurate replacement for the condition in
+    If-Modified-Since, and the two are only combined for the sake of
+    interoperating with older intermediaries that might not implement
+    If-None-Match.
+
+
+Section 3.3., paragraph 9:
+OLD:
+
+    When used for cache updates, a cache will typically use the value of
+    the cached message's Last-Modified field to generate the field value
+    of If-Modified-Since.  This behavior is most interoperable for cases
+    where clocks are poorly synchronized or when the server has chosen to
+    only honor exact timestamp matches (due to a problem with Last-
+    Modified dates that appear to go "back in time" when the origin
+    server's clock is corrected or a representation is restored from an
+    archived backup).  However, caches occasionally generate the field
+    value based on other data, such as the Date header field of the
+    cached message or the local clock time that the message was received,
+    particularly when the cached message does not contain a Last-Modified
+    field.
+
+NEW:
+
+    When used for cache updates, a cache will typically use the value of
+    the cached message's Last-Modified field to generate the field value
+    of If-Modified-Since.  This behavior is most interoperable for cases
+    where clocks are poorly synchronized or when the server has chosen to
+    only honor exact timestamp matches (due to a problem with
+    Last-Modified dates that appear to go "back in time" when the origin
+    server's clock is corrected or a representation is restored from an
+    archived backup).  However, caches occasionally generate the field
+    value based on other data, such as the Date header field of the
+    cached message or the local clock time that the message was received,
+    particularly when the cached message does not contain a Last-Modified
+    field.
+
+
+Section 3.3., paragraph 10:
+OLD:
+
+    When used for limiting the scope of retrieval to a recent time
+    window, a user agent will generate an If-Modified-Since field value
+    based on either its own local clock or a Date header field received
+    from the server in a prior response.  Origin servers that choose an
+    exact timestamp match based on the selected representation's Last-
+    Modified field will not be able to help the user agent limit its data
+    transfers to only those changed during the specified window.
+
+NEW:
+
+    When used for limiting the scope of retrieval to a recent time
+    window, a user agent will generate an If-Modified-Since field value
+    based on either its own local clock or a Date header field received
+    from the server in a prior response.  Origin servers that choose an
+    exact timestamp match based on the selected representation's
+    Last-Modified field will not be able to help the user agent limit its
+    data transfers to only those changed during the specified window.
+
+
+Section 3.4., paragraph 5:
+OLD:
+
+    A recipient MUST ignore If-Unmodified-Since if the request contains
+    an If-Match header field; the condition in If-Match is considered to
+    be a more accurate replacement for the condition in If-Unmodified-
+    Since, and the two are only combined for the sake of interoperating
+    with older intermediaries that might not implement If-Match.
+
+NEW:
+
+    A recipient MUST ignore If-Unmodified-Since if the request contains
+    an If-Match header field; the condition in If-Match is considered to
+    be a more accurate replacement for the condition in
+    If-Unmodified-Since, and the two are only combined for the sake of
+    interoperating with older intermediaries that might not implement
+    If-Match.
+
+
+Section 10.1., paragraph 0:
+OLD:
+
+ 10.  References
+ 10.1.  Normative References
+
+NEW:
+
+ 10.  References
+ 
+ 10.1.  Normative References
+
+
+Appendix A., paragraph 3:
+OLD:
+
+    The ETag header field ABNF has been changed to not use quoted-string,
+    thus avoiding escaping issues.  (Section 2.3)
+    ETag is defined to provide an entity tag for the selected
+    representation, thereby clarifying what it applies to in various
+    situations (such as a PUT response).  (Section 2.3)
+
+NEW:
+
+    The ETag header field ABNF has been changed to not use quoted-string,
+    thus avoiding escaping issues.  (Section 2.3)
+ 
+    ETag is defined to provide an entity tag for the selected
+    representation, thereby clarifying what it applies to in various
+    situations (such as a PUT response).  (Section 2.3)
+
+
+Section 1.2, paragraph 10:
+OLD:
+
+    3
+       304 Not Modified (status code)  18
+
+NEW:
+
+    3
+       304 Not Modified (status code)  19
+
+
+Section 1.2, paragraph 13:
+OLD:
+
+    G
+       Grammar
+          entity-tag  9
+          ETag  9
+          etagc  9
+          If-Match  13
+          If-Modified-Since  15
+          If-None-Match  14
+          If-Unmodified-Since  16
+          Last-Modified  7
+          opaque-tag  9
+          weak  9
+
+NEW:
+
+    G
+       Grammar
+          entity-tag  9
+          ETag  9
+          etagc  9
+          If-Match  13
+          If-Modified-Since  15
+          If-None-Match  14
+          If-Unmodified-Since  17
+          Last-Modified  7
+          opaque-tag  9
+          weak  9
+
+
+Section 1.2, paragraph 14:
+OLD:
+
+    I
+       If-Match header field  13
+       If-Modified-Since header field  15
+       If-None-Match header field  14
+       If-Unmodified-Since header field  16
+
+NEW:
+
+    I
+       If-Match header field  13
+       If-Modified-Since header field  16
+       If-None-Match header field  14
+       If-Unmodified-Since header field  17
+

draft-ietf-httpbis/latest/auth48/rfc7232.diff.html

@@ -149 +149 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   (Section 3 of [RFC7231]) will be consistent over time if the server</td><td> </td><td class="right">   (Section 3 of [RFC7231]) will be consistent over time if the server</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 8, line 48</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 9, line 4</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 8, line 24</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 8, line 28</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  The validator is being compared by an origin server to the actual</td><td> </td><td class="right">   o  The validator is being compared by an origin server to the actual</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      current validator for the representation and,</td><td> </td><td class="right">      current validator for the representation and,</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  That origin server reliably knows that the associated</td><td> </td><td class="right">   o  That origin server reliably knows that the associated</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      representation did not change twice during the second covered by</td><td> </td><td class="right">      representation did not change twice during the second covered by</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      the presented validator.</td><td> </td><td class="right">      the presented validator.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   or</td><td> </td><td class="right">   or</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0004" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  The validator is about to be used by a client in an <span class="delete">If-Modified-</span></td><td> </td><td class="rblock">   o  The validator is about to be used by a client in an</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Since,</span> If-Unmodified-Since, or If-Range header field, because the</td><td> </td><td class="rblock">      <span class="insert">If-Modified-Since,</span> If-Unmodified-Since, or If-Range header field,</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">      client has a cache entry for the associated representation, and</td><td> </td><td class="rblock">      because the client has a cache entry for the associated</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">      representation, and</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  That cache entry includes a Date value, which gives the time when</td><td> </td><td class="right">   o  That cache entry includes a Date value, which gives the time when</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      the origin server sent the original response, and</td><td> </td><td class="right">      the origin server sent the original response, and</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  The presented Last-Modified time is at least 60 seconds before the</td><td> </td><td class="right">   o  The presented Last-Modified time is at least 60 seconds before the</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      Date value.</td><td> </td><td class="right">      Date value.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   or</td><td> </td><td class="right">   or</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  The validator is being compared by an intermediate cache to the</td><td> </td><td class="right">   o  The validator is being compared by an intermediate cache to the</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 8, line 48</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 9, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   o  That cache entry includes a Date value, which gives the time when</td><td> </td><td class="right">   o  That cache entry includes a Date value, which gives the time when</td><td class="lineno" valign="top"></td></tr>
@@ -160 +187 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   sent by the origin server during the same second, but both had the</td><td> </td><td class="right">   sent by the origin server during the same second, but both had the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   same Last-Modified time, then at least one of those responses would</td><td> </td><td class="right">   same Last-Modified time, then at least one of those responses would</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0004" /></td></tr>
+      <tr><td><a name="diff0005" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   have a Date value equal to its Last-Modified time.  The arbitrary <span class="delete">60-</span></td><td> </td><td class="rblock">   have a Date value equal to its Last-Modified time.  The arbitrary</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   second</span> limit guards against the possibility that the Date and <span class="delete">Last-</span></td><td> </td><td class="rblock">   <span class="insert">60-second</span> limit guards against the possibility that the Date and</td><td class="lineno" valign="top"></td></tr>
@@ -176 +203 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   resource, regardless of whether those multiple representations are</td><td> </td><td class="right">   resource, regardless of whether those multiple representations are</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 12, line 37</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 13, line 6</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 10, line 37</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 10, line 44</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   improving service scalability and reliability.</td><td> </td><td class="right">   improving service scalability and reliability.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">2.3.2.  Comparison</td><td> </td><td class="right">2.3.2.  Comparison</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   There are two entity-tag comparison functions, depending on whether</td><td> </td><td class="right">   There are two entity-tag comparison functions, depending on whether</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   or not the comparison context allows the use of weak validators:</td><td> </td><td class="right">   or not the comparison context allows the use of weak validators:</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  Strong comparison: two entity-tags are equivalent if both are not</td><td> </td><td class="right">   o  Strong comparison: two entity-tags are equivalent if both are not</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      weak and their opaque-tags match character-by-character.</td><td> </td><td class="right">      weak and their opaque-tags match character-by-character.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0006" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  Weak comparison: two entity-tags are equivalent if their <span class="delete">opaque-</span></td><td> </td><td class="rblock">   o  Weak comparison: two entity-tags are equivalent if their</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      tags</span> match character-by-character, regardless of either or both</td><td> </td><td class="rblock">      <span class="insert">opaque-tags</span> match character-by-character, regardless of either or</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">      being tagged as "weak".</td><td> </td><td class="rblock">      both being tagged as "weak".</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   The example below shows the results for a set of entity-tag pairs and</td><td> </td><td class="right">   The example below shows the results for a set of entity-tag pairs and</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   both the weak and strong comparison function results:</td><td> </td><td class="right">   both the weak and strong comparison function results:</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   +--------+--------+-------------------+-----------------+</td><td> </td><td class="right">   +--------+--------+-------------------+-----------------+</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   | ETag 1 | ETag 2 | Strong Comparison | Weak Comparison |</td><td> </td><td class="right">   | ETag 1 | ETag 2 | Strong Comparison | Weak Comparison |</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   +--------+--------+-------------------+-----------------+</td><td> </td><td class="right">   +--------+--------+-------------------+-----------------+</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   | W/"1"  | W/"1"  | no match          | match           |</td><td> </td><td class="right">   | W/"1"  | W/"1"  | no match          | match           |</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   | W/"1"  | W/"2"  | no match          | no match        |</td><td> </td><td class="right">   | W/"1"  | W/"2"  | no match          | no match        |</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   | W/"1"  | "1"    | no match          | match           |</td><td> </td><td class="right">   | W/"1"  | "1"    | no match          | match           |</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 12, line 37</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 13, line 6</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   send both a strong entity-tag and a Last-Modified value in successful</td><td> </td><td class="right">   send both a strong entity-tag and a Last-Modified value in successful</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   responses to a retrieval request.</td><td> </td><td class="right">   responses to a retrieval request.</td><td class="lineno" valign="top"></td></tr>
@@ -187 +240 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   o  SHOULD send the Last-Modified value in non-subrange cache</td><td> </td><td class="right">   o  SHOULD send the Last-Modified value in non-subrange cache</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0005" /></td></tr>
+      <tr><td><a name="diff0007" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      validation requests (using If-Modified-Since) if only a <span class="delete">Last-</span></td><td> </td><td class="rblock">      validation requests (using If-Modified-Since) if only a</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Modified</span> value has been provided by the origin server.</td><td> </td><td class="rblock">      <span class="insert">Last-Modified</span> value has been provided by the origin server.</td><td class="lineno" valign="top"></td></tr>
@@ -201 +254 @@
       <tr><td class="lineno" valign="top"></td><td class="left">      respond appropriately.</td><td> </td><td class="right">      respond appropriately.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 15, line 42</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 16, line 21</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 15, line 42</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 16, line 21</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   data has not changed.</td><td> </td><td class="right">   data has not changed.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -212 +265 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   A recipient MUST ignore If-Modified-Since if the request contains an</td><td> </td><td class="right">   A recipient MUST ignore If-Modified-Since if the request contains an</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   If-None-Match header field; the condition in If-None-Match is</td><td> </td><td class="right">   If-None-Match header field; the condition in If-None-Match is</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0006" /></td></tr>
+      <tr><td><a name="diff0008" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   considered to be a more accurate replacement for the condition in <span class="delete">If-</span></td><td> </td><td class="rblock">   considered to be a more accurate replacement for the condition in</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Modified-Since,</span> and the two are only combined for the sake of</td><td> </td><td class="rblock">   <span class="insert">If-Modified-Since,</span> and the two are only combined for the sake of</td><td class="lineno" valign="top"></td></tr>
@@ -234 +287 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   of If-Modified-Since.  This behavior is most interoperable for cases</td><td> </td><td class="right">   of If-Modified-Since.  This behavior is most interoperable for cases</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   where clocks are poorly synchronized or when the server has chosen to</td><td> </td><td class="right">   where clocks are poorly synchronized or when the server has chosen to</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0007" /></td></tr>
+      <tr><td><a name="diff0009" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   only honor exact timestamp matches (due to a problem with <span class="delete">Last-</span></td><td> </td><td class="rblock">   only honor exact timestamp matches (due to a problem with</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Modified</span> dates that appear to go "back in time" when the origin</td><td> </td><td class="rblock">   <span class="insert">Last-Modified</span> dates that appear to go "back in time" when the origin</td><td class="lineno" valign="top"></td></tr>
@@ -248 +301 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   based on either its own local clock or a Date header field received</td><td> </td><td class="right">   based on either its own local clock or a Date header field received</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   from the server in a prior response.  Origin servers that choose an</td><td> </td><td class="right">   from the server in a prior response.  Origin servers that choose an</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0008" /></td></tr>
+      <tr><td><a name="diff0010" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   exact timestamp match based on the selected representation's <span class="delete">Last-</span></td><td> </td><td class="rblock">   exact timestamp match based on the selected representation's</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Modified</span> field will not be able to help the user agent limit its data</td><td> </td><td class="rblock">   <span class="insert">Last-Modified</span> field will not be able to help the user agent limit its</td><td class="lineno" valign="top"></td></tr>
@@ -263 +316 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 17, line 13</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 17, line 41</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 17, line 13</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 17, line 41</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   the user agent does not have an entity-tag for the representation.</td><td> </td><td class="right">   the user agent does not have an entity-tag for the representation.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -274 +327 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   A recipient MUST ignore If-Unmodified-Since if the request contains</td><td> </td><td class="right">   A recipient MUST ignore If-Unmodified-Since if the request contains</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   an If-Match header field; the condition in If-Match is considered to</td><td> </td><td class="right">   an If-Match header field; the condition in If-Match is considered to</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0009" /></td></tr>
+      <tr><td><a name="diff0011" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   be a more accurate replacement for the condition in <span class="delete">If-Unmodified-</span></td><td> </td><td class="rblock">   be a more accurate replacement for the condition in</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Since,</span> and the two are only combined for the sake of interoperating</td><td> </td><td class="rblock">   <span class="insert">If-Unmodified-Since,</span> and the two are only combined for the sake of</td><td class="lineno" valign="top"></td></tr>
@@ -290 +343 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   multiple user agents might be acting in parallel on a resource that</td><td> </td><td class="right">   multiple user agents might be acting in parallel on a resource that</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 25, line 32</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 27, line 8</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 25, line 32</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 27, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">    / obs-text</td><td> </td><td class="right">    / obs-text</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -301 +354 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   3</td><td> </td><td class="right">   3</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0010" /></td></tr>
+      <tr><td><a name="diff0012" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      304 Not Modified (status code)  1<span class="delete">8</span></td><td> </td><td class="rblock">      304 Not Modified (status code)  1<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -318 +371 @@
       <tr><td class="lineno" valign="top"></td><td class="left">         If-Modified-Since  15</td><td> </td><td class="right">         If-Modified-Since  15</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         If-None-Match  14</td><td> </td><td class="right">         If-None-Match  14</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0011" /></td></tr>
+      <tr><td><a name="diff0013" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         If-Unmodified-Since  1<span class="delete">6</span></td><td> </td><td class="rblock">         If-Unmodified-Since  1<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         Last-Modified  7</td><td> </td><td class="right">         Last-Modified  7</td><td class="lineno" valign="top"></td></tr>
@@ -326 +379 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   I</td><td> </td><td class="right">   I</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      If-Match header field  13</td><td> </td><td class="right">      If-Match header field  13</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0012" /></td></tr>
+      <tr><td><a name="diff0014" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      If-Modified-Since header field  1<span class="delete">5</span></td><td> </td><td class="rblock">      If-Modified-Since header field  1<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      If-None-Match header field  14</td><td> </td><td class="right">      If-None-Match header field  14</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0013" /></td></tr>
+      <tr><td><a name="diff0015" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      If-Unmodified-Since header field  1<span class="delete">6</span></td><td> </td><td class="rblock">      If-Unmodified-Since header field  1<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -343 +396 @@
 
      <tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
-     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 13 change blocks.&nbsp;</a></th></tr>
-     <tr class="stats"><td></td><th><i>75 lines changed or deleted</i></th><th><i> </i></th><th><i>62 lines changed or added</i></th><td></td></tr>
+     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 15 change blocks.&nbsp;</a></th></tr>
+     <tr class="stats"><td></td><th><i>81 lines changed or deleted</i></th><th><i> </i></th><th><i>69 lines changed or added</i></th><td></td></tr>
      <tr><td colspan="5" align="center" class="small"><br/>This html diff was produced by rfcdiff 1.38. The latest version is available from <a href="http://www.tools.ietf.org/tools/rfcdiff/" >http://tools.ietf.org/tools/rfcdiff/</a> </td></tr>
    </table>

draft-ietf-httpbis/latest/auth48/rfc7232.txt

@@ -428 +428 @@
    or
 
-   o  The validator is about to be used by a client in an If-Modified-
-      Since, If-Unmodified-Since, or If-Range header field, because the
-      client has a cache entry for the associated representation, and
+   o  The validator is about to be used by a client in an
+      If-Modified-Since, If-Unmodified-Since, or If-Range header field,
+      because the client has a cache entry for the associated
+      representation, and
 
    o  That cache entry includes a Date value, which gives the time when
@@ -448 +449 @@
    o  The presented Last-Modified time is at least 60 seconds before the
       Date value.
+
+
+
+
+
+
+Fielding & Reschke           Standards Track                    [Page 8]
+
+
+RFC 7232              HTTP/1.1 Conditional Requests            June 2014
+
 
    This method relies on the fact that if two different responses were
    sent by the origin server during the same second, but both had the
    same Last-Modified time, then at least one of those responses would
-
-
-
-Fielding & Reschke           Standards Track                    [Page 8]
-
-
-RFC 7232              HTTP/1.1 Conditional Requests            June 2014
-
-
    have a Date value equal to its Last-Modified time.  The arbitrary
    60-second limit guards against the possibility that the Date and
@@ -505 +508 @@
      ETag: ""
 
+
+
+
+
+Fielding & Reschke           Standards Track                    [Page 9]
+
+
+RFC 7232              HTTP/1.1 Conditional Requests            June 2014
+
+
    An entity-tag can be either a weak or strong validator, with strong
    being the default.  If an origin server provides an entity-tag for a
    representation and the generation of that entity-tag does not satisfy
-
-
-
-
-Fielding & Reschke           Standards Track                    [Page 9]
-
-
-RFC 7232              HTTP/1.1 Conditional Requests            June 2014
-
-
    all of the characteristics of a strong validator (Section 2.1), then
    the origin server MUST mark the entity-tag as weak by prefixing its
@@ -554 +557 @@
       weak and their opaque-tags match character-by-character.
 
-   o  Weak comparison: two entity-tags are equivalent if their opaque-
-      tags match character-by-character, regardless of either or both
-      being tagged as "weak".
-
-
-
+   o  Weak comparison: two entity-tags are equivalent if their
+      opaque-tags match character-by-character, regardless of either or
+      both being tagged as "weak".
 
 

draft-ietf-httpbis/latest/auth48/rfc7234.abdiff.txt

@@ -38 +38 @@
     document authors.  All rights reserved.
 
+
+INTRODUCTION, paragraph 13:
+OLD:
+
+    1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
+      1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4
+      1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4
+        1.2.1.  Delta Seconds  . . . . . . . . . . . . . . . . . . . .  5
+    2.  Overview of Cache Operation  . . . . . . . . . . . . . . . . .  5
+    3.  Storing Responses in Caches  . . . . . . . . . . . . . . . . .  6
+      3.1.  Storing Incomplete Responses . . . . . . . . . . . . . . .  7
+      3.2.  Storing Responses to Authenticated Requests  . . . . . . .  7
+      3.3.  Combining Partial Content  . . . . . . . . . . . . . . . .  8
+    4.  Constructing Responses from Caches . . . . . . . . . . . . . .  8
+      4.1.  Calculating Secondary Keys with Vary . . . . . . . . . . .  9
+      4.2.  Freshness  . . . . . . . . . . . . . . . . . . . . . . . . 10
+        4.2.1.  Calculating Freshness Lifetime . . . . . . . . . . . . 12
+        4.2.2.  Calculating Heuristic Freshness  . . . . . . . . . . . 12
+        4.2.3.  Calculating Age  . . . . . . . . . . . . . . . . . . . 13
+        4.2.4.  Serving Stale Responses  . . . . . . . . . . . . . . . 15
+      4.3.  Validation . . . . . . . . . . . . . . . . . . . . . . . . 15
+        4.3.1.  Sending a Validation Request . . . . . . . . . . . . . 15
+        4.3.2.  Handling a Received Validation Request . . . . . . . . 16
+        4.3.3.  Handling a Validation Response . . . . . . . . . . . . 17
+        4.3.4.  Freshening Stored Responses upon Validation  . . . . . 18
+        4.3.5.  Freshening Responses via HEAD  . . . . . . . . . . . . 19
+      4.4.  Invalidation . . . . . . . . . . . . . . . . . . . . . . . 19
+    5.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 20
+      5.1.  Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
+      5.2.  Cache-Control  . . . . . . . . . . . . . . . . . . . . . . 21
+        5.2.1.  Request Cache-Control Directives . . . . . . . . . . . 21
+        5.2.2.  Response Cache-Control Directives  . . . . . . . . . . 23
+        5.2.3.  Cache Control Extensions . . . . . . . . . . . . . . . 26
+      5.3.  Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 27
+      5.4.  Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 28
+      5.5.  Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 29
+        5.5.1.  Warning: 110 - "Response is Stale" . . . . . . . . . . 30
+        5.5.2.  Warning: 111 - "Revalidation Failed" . . . . . . . . . 31
+        5.5.3.  Warning: 112 - "Disconnected Operation"  . . . . . . . 31
+        5.5.4.  Warning: 113 - "Heuristic Expiration"  . . . . . . . . 31
+        5.5.5.  Warning: 199 - "Miscellaneous Warning" . . . . . . . . 31
+        5.5.6.  Warning: 214 - "Transformation Applied"  . . . . . . . 31
+        5.5.7.  Warning: 299 - "Miscellaneous Persistent Warning"  . . 31
+    6.  History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 31
+    7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 32
+      7.1.  Cache Directive Registry . . . . . . . . . . . . . . . . . 32
+        7.1.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 32
+        7.1.2.  Considerations for New Cache Control Directives  . . . 32
+        7.1.3.  Registrations  . . . . . . . . . . . . . . . . . . . . 32
+      7.2.  Warn Code Registry . . . . . . . . . . . . . . . . . . . . 33
+        7.2.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 33
+        7.2.2.  Registrations  . . . . . . . . . . . . . . . . . . . . 33
+      7.3.  Header Field Registration  . . . . . . . . . . . . . . . . 34
+    8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 34
+    9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 35
+    10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 35
+      10.1. Normative References . . . . . . . . . . . . . . . . . . . 35
+      10.2. Informative References . . . . . . . . . . . . . . . . . . 36
+    Appendix A.  Changes from RFC 2616 . . . . . . . . . . . . . . . . 36
+    Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . 38
+    Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 38
+    Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
+
+NEW:
+
+    1. Introduction ....................................................4
+       1.1. Conformance and Error Handling .............................4
+       1.2. Syntax Notation ............................................4
+            1.2.1. Delta Seconds .......................................5
+    2. Overview of Cache Operation .....................................5
+    3. Storing Responses in Caches .....................................6
+       3.1. Storing Incomplete Responses ...............................7
+       3.2. Storing Responses to Authenticated Requests ................7
+       3.3. Combining Partial Content ..................................8
+    4. Constructing Responses from Caches ..............................8
+       4.1. Calculating Secondary Keys with Vary .......................9
+       4.2. Freshness .................................................11
+            4.2.1. Calculating Freshness Lifetime .....................12
+            4.2.2. Calculating Heuristic Freshness ....................13
+            4.2.3. Calculating Age ....................................13
+            4.2.4. Serving Stale Responses ............................15
+       4.3. Validation ................................................16
+            4.3.1. Sending a Validation Request .......................16
+            4.3.2. Handling a Received Validation Request .............16
+            4.3.3. Handling a Validation Response .....................18
+            4.3.4. Freshening Stored Responses upon Validation ........18
+            4.3.5. Freshening Responses via HEAD ......................19
+       4.4. Invalidation ..............................................20
+    5. Header Field Definitions .......................................21
+       5.1. Age .......................................................21
+       5.2. Cache-Control .............................................21
+            5.2.1. Request Cache-Control Directives ...................22
+            5.2.2. Response Cache-Control Directives ..................24
+            5.2.3. Cache Control Extensions ...........................27
+       5.3. Expires ...................................................28
+       5.4. Pragma ....................................................29
+       5.5. Warning ...................................................29
+            5.5.1. Warning: 110 - "Response is Stale" .................31
+            5.5.2. Warning: 111 - "Revalidation Failed" ...............31
+            5.5.3. Warning: 112 - "Disconnected Operation" ............31
+            5.5.4. Warning: 113 - "Heuristic Expiration" ..............31
+            5.5.5. Warning: 199 - "Miscellaneous Warning" .............32
+            5.5.6. Warning: 214 - "Transformation Applied" ............32
+            5.5.7. Warning: 299 - "Miscellaneous Persistent Warning" ..32
+    6. History Lists ..................................................32
+    7. IANA Considerations ............................................32
+       7.1. Cache Directive Registry ..................................32
+            7.1.1. Procedure ..........................................32
+            7.1.2. Considerations for New Cache Control Directives ....33
+            7.1.3. Registrations ......................................33
+       7.2. Warn Code Registry ........................................34
+            7.2.1. Procedure ..........................................34
+            7.2.2. Registrations ......................................34
+       7.3. Header Field Registration .................................34
+    8. Security Considerations ........................................35
+    9. Acknowledgments ................................................36
+    10. References ....................................................36
+       10.1. Normative References .....................................36
+       10.2. Informative References ...................................37
+    Appendix A. Changes from RFC 2616 .................................38
+    Appendix B. Imported ABNF .........................................39
+    Appendix C. Collected ABNF ........................................39
+    Index .............................................................41
+
+
+Section 1.2.1., paragraph 3:
+OLD:
+
+    A recipient parsing a delta-seconds value and converting it to binary
+    form ought to use an arithmetic type of at least 31 bits of non-
+    negative integer range.  If a cache receives a delta-seconds value
+    greater than the greatest integer it can represent, or if any of its
+    subsequent calculations overflows, the cache MUST consider the value
+    to be either 2147483648 (2^31) or the greatest positive integer it
+    can conveniently represent.
+
+NEW:
+
+    A recipient parsing a delta-seconds value and converting it to binary
+    form ought to use an arithmetic type of at least 31 bits of
+    non-negative integer range.  If a cache receives a delta-seconds
+    value greater than the greatest integer it can represent, or if any
+    of its subsequent calculations overflows, the cache MUST consider the
+    value to be either 2147483648 (2^31) or the greatest positive integer
+    it can conveniently represent.
+
+
+Section 3.3., paragraph 3:
+OLD:
+
+    o  delete any Warning header fields in the stored response with warn-
+       code 1xx (see Section 5.5);
+
+NEW:
+
+    o  delete any Warning header fields in the stored response with
+       warn-code 1xx (see Section 5.5);
+
+
+Section 3.3., paragraph 4:
+OLD:
+
+    o  retain any Warning header fields in the stored response with warn-
+       code 2xx; and,
+
+NEW:
+
+    o  retain any Warning header fields in the stored response with
+       warn-code 2xx; and,
+
+
+Section 4.2., paragraph 13:
+OLD:
+
+    o  Although all date formats are specified to be case-sensitive, a
+       cache recipient SHOULD match day, week, and time-zone names case-
+       insensitively.
+
+NEW:
+
+    o  Although all date formats are specified to be case-sensitive, a
+       cache recipient SHOULD match day, week, and time-zone names
+       case-insensitively.
+
+
+Section 4.2.4., paragraph 3:
+OLD:
+
+    A cache MUST NOT send stale responses unless it is disconnected
+    (i.e., it cannot contact the origin server or otherwise find a
+    forward path) or doing so is explicitly allowed (e.g., by the max-
+    stale request directive; see Section 5.2.1).
+
+NEW:
+
+    A cache MUST NOT send stale responses unless it is disconnected
+    (i.e., it cannot contact the origin server or otherwise find a
+    forward path) or doing so is explicitly allowed (e.g., by the
+    max-stale request directive; see Section 5.2.1).
+
+
+Section 4.3.1., paragraph 2:
+OLD:
+
+    One such validator is the timestamp given in a Last-Modified header
+    field (Section 2.2 of [RFC7232]), which can be used in an If-
+    Modified-Since header field for response validation, or in an If-
+    Unmodified-Since or If-Range header field for representation
+    selection (i.e., the client is referring specifically to a previously
+    obtained representation with that timestamp).
+
+NEW:
+
+    One such validator is the timestamp given in a Last-Modified header
+    field (Section 2.2 of [RFC7232]), which can be used in an
+    If-Modified-Since header field for response validation, or in an
+    If-Unmodified-Since or If-Range header field for representation
+    selection (i.e., the client is referring specifically to a previously
+    obtained representation with that timestamp).
+
+
+Section 4.3.2., paragraph 3:
+OLD:
+
+    The proper evaluation of conditional requests by a cache depends on
+    the received precondition header fields and their precedence, as
+    defined in Section 6 of [RFC7232].  The If-Match and If-Unmodified-
+    Since conditional header fields are not applicable to a cache.
+
+NEW:
+
+    The proper evaluation of conditional requests by a cache depends on
+    the received precondition header fields and their precedence, as
+    defined in Section 6 of [RFC7232].  The If-Match and
+    If-Unmodified-Since conditional header fields are not applicable to a
+    cache.
+
+
+Section 4.3.2., paragraph 6:
+OLD:
+
+    If an If-None-Match header field is not present, a request containing
+    an If-Modified-Since header field (Section 3.3 of [RFC7232])
+    indicates that the client wants to validate one or more of its own
+    stored responses by modification date.  A cache recipient SHOULD
+    generate a 304 (Not Modified) response (using the metadata of the
+    selected stored response) if one of the following cases is true: 1)
+    the selected stored response has a Last-Modified field-value that is
+    earlier than or equal to the conditional timestamp; 2) no Last-
+    Modified field is present in the selected stored response, but it has
+    a Date field-value that is earlier than or equal to the conditional
+    timestamp; or, 3) neither Last-Modified nor Date is present in the
+    selected stored response, but the cache recorded it as having been
+    received at a time earlier than or equal to the conditional
+    timestamp.
+
+NEW:
+
+    If an If-None-Match header field is not present, a request containing
+    an If-Modified-Since header field (Section 3.3 of [RFC7232])
+    indicates that the client wants to validate one or more of its own
+    stored responses by modification date.  A cache recipient SHOULD
+    generate a 304 (Not Modified) response (using the metadata of the
+    selected stored response) if one of the following cases is true: 1)
+    the selected stored response has a Last-Modified field-value that is
+    earlier than or equal to the conditional timestamp; 2) no
+    Last-Modified field is present in the selected stored response, but
+    it has a Date field-value that is earlier than or equal to the
+    conditional timestamp; or, 3) neither Last-Modified nor Date is
+    present in the selected stored response, but the cache recorded it as
+    having been received at a time earlier than or equal to the
+    conditional timestamp.
+
+
+Section 4.3.4., paragraph 7:
+OLD:
+
+    o  delete any Warning header fields in the stored response with warn-
+       code 1xx (see Section 5.5);
+
+NEW:
+
+    o  delete any Warning header fields in the stored response with
+       warn-code 1xx (see Section 5.5);
+
+
+Section 4.3.4., paragraph 8:
+OLD:
+
+    o  retain any Warning header fields in the stored response with warn-
+       code 2xx; and,
+
+NEW:
+
+    o  retain any Warning header fields in the stored response with
+       warn-code 2xx; and,
+
+
+Section 4.3.5., paragraph 3:
+OLD:
+
+    For each of the stored responses that could have been selected, if
+    the stored response and HEAD response have matching values for any
+    received validator fields (ETag and Last-Modified) and, if the HEAD
+    response has a Content-Length header field, the value of Content-
+    Length matches that of the stored response, the cache SHOULD update
+    the stored response as described below; otherwise, the cache SHOULD
+    consider the stored response to be stale.
+
+NEW:
+
+    For each of the stored responses that could have been selected, if
+    the stored response and HEAD response have matching values for any
+    received validator fields (ETag and Last-Modified) and, if the HEAD
+    response has a Content-Length header field, the value of
+    Content-Length matches that of the stored response, the cache SHOULD
+    update the stored response as described below; otherwise, the cache
+    SHOULD consider the stored response to be stale.
+
+
+Section 4.3.5., paragraph 5:
+OLD:
+
+    o  delete any Warning header fields in the stored response with warn-
+       code 1xx (see Section 5.5);
+
+NEW:
+
+    o  delete any Warning header fields in the stored response with
+       warn-code 1xx (see Section 5.5);
+
+
+Section 4.3.5., paragraph 6:
+OLD:
+
+    o  retain any Warning header fields in the stored response with warn-
+       code 2xx; and,
+
+NEW:
+
+    o  retain any Warning header fields in the stored response with
+       warn-code 2xx; and,
+
+
+Section 5.2., paragraph 5:
+OLD:
+
+    Cache directives are identified by a token, to be compared case-
+    insensitively, and have an optional argument, that can use both token
+    and quoted-string syntax.  For the directives defined below that
+    define arguments, recipients ought to accept both forms, even if one
+    is documented to be preferred.  For any directive not defined by this
+    specification, a recipient MUST accept both forms.
+
+NEW:
+
+    Cache directives are identified by a token, to be compared
+    case-insensitively, and have an optional argument, that can use both
+    token and quoted-string syntax.  For the directives defined below
+    that define arguments, recipients ought to accept both forms, even if
+    one is documented to be preferred.  For any directive not defined by
+    this specification, a recipient MUST accept both forms.
+
+
+Section 5.2.1.5., paragraph 1:
+OLD:
+
+    The "no-store" request directive indicates that a cache MUST NOT
+    store any part of either this request or any response to it.  This
+    directive applies to both private and shared caches.  "MUST NOT
+    store" in this context means that the cache MUST NOT intentionally
+    store the information in non-volatile storage, and MUST make a best-
+    effort attempt to remove the information from volatile storage as
+    promptly as possible after forwarding it.
+
+NEW:
+
+    The "no-store" request directive indicates that a cache MUST NOT
+    store any part of either this request or any response to it.  This
+    directive applies to both private and shared caches.  "MUST NOT
+    store" in this context means that the cache MUST NOT intentionally
+    store the information in non-volatile storage, and MUST make a
+    best-effort attempt to remove the information from volatile storage
+    as promptly as possible after forwarding it.
+
+
+Section 5.2.2.2., paragraph 7:
+OLD:
+
+    Note: Although it has been back-ported to many implementations, some
+    HTTP/1.0 caches will not recognize or obey this directive.  Also, no-
+    cache response directives with field-names are often handled by
+    caches as if an unqualified no-cache directive was received; i.e.,
+    the special handling for the qualified form is not widely
+    implemented.
+
+NEW:
+
+    Note: Although it has been back-ported to many implementations, some
+    HTTP/1.0 caches will not recognize or obey this directive.  Also,
+    no-cache response directives with field-names are often handled by
+    caches as if an unqualified no-cache directive was received; i.e.,
+    the special handling for the qualified form is not widely
+    implemented.
+
+
+Section 5.2.2.3., paragraph 1:
+OLD:
+
+    The "no-store" response directive indicates that a cache MUST NOT
+    store any part of either the immediate request or response.  This
+    directive applies to both private and shared caches.  "MUST NOT
+    store" in this context means that the cache MUST NOT intentionally
+    store the information in non-volatile storage, and MUST make a best-
+    effort attempt to remove the information from volatile storage as
+    promptly as possible after forwarding it.
+
+NEW:
+
+    The "no-store" response directive indicates that a cache MUST NOT
+    store any part of either the immediate request or response.  This
+    directive applies to both private and shared caches.  "MUST NOT
+    store" in this context means that the cache MUST NOT intentionally
+    store the information in non-volatile storage, and MUST make a
+    best-effort attempt to remove the information from volatile storage
+    as promptly as possible after forwarding it.
+
+
+Section 5.5., paragraph 15:
+OLD:
+
+    If a recipient that uses, evaluates, or displays Warning header
+    fields receives a warn-date that is different from the Date value in
+    the same message, the recipient MUST exclude the warning-value
+    containing that warn-date before storing, forwarding, or using the
+    message.  This allows recipients to exclude warning-values that were
+    improperly retained after a cache validation.  If all of the warning-
+    values are excluded, the recipient MUST exclude the Warning header
+    field as well.
+
+NEW:
+
+    If a recipient that uses, evaluates, or displays Warning header
+    fields receives a warn-date that is different from the Date value in
+    the same message, the recipient MUST exclude the warning-value
+    containing that warn-date before storing, forwarding, or using the
+    message.  This allows recipients to exclude warning-values that were
+    improperly retained after a cache validation.  If all of the
+    warning-values are excluded, the recipient MUST exclude the Warning
+    header field as well.
+
+
+Section 5.5.6., paragraph 1:
+OLD:
+
+    This Warning code MUST be added by a proxy if it applies any
+    transformation to the representation, such as changing the content-
+    coding, media-type, or modifying the representation data, unless this
+    Warning code already appears in the response.
+
+NEW:
+
+    This Warning code MUST be added by a proxy if it applies any
+    transformation to the representation, such as changing the
+    content-coding, media-type, or modifying the representation data,
+    unless this Warning code already appears in the response.
+
+
+Section 7.1.1., paragraph 2:
+OLD:
+
+    o  Cache Directive Name
+ 
+    o  Pointer to specification text
+
+NEW:
+
+    o  Cache Directive Name
+    o  Pointer to specification text
+
+
+Appendix A., paragraph 3:
+OLD:
+
+    New status codes can now define that caches are allowed to use
+    heuristic freshness with them.  Caches are now allowed to calculate
+    heuristic freshness for URIs with query components.  (Section 4.2.2)
+    The algorithm for calculating age is now less conservative.  Caches
+    are now required to handle dates with time zones as if they're
+    invalid, because it's not possible to accurately guess.
+    (Section 4.2.3)
+
+NEW:
+
+    New status codes can now define that caches are allowed to use
+    heuristic freshness with them.  Caches are now allowed to calculate
+    heuristic freshness for URIs with query components.  (Section 4.2.2)
+ 
+    The algorithm for calculating age is now less conservative.  Caches
+    are now required to handle dates with time zones as if they're
+    invalid, because it's not possible to accurately guess.
+    (Section 4.2.3)
+
+
+Appendix A., paragraph 11:
+OLD:
+
+    The "no-cache" response directive's meaning has been clarified.
+    (Section 5.2.2.2)
+ 
+    The one-year limit on Expires header field values has been removed;
+    instead, the reasoning for using a sensible value is given.
+    (Section 5.3)
+
+NEW:
+
+    The "no-cache" response directive's meaning has been clarified.
+    (Section 5.2.2.2)
+    The one-year limit on Expires header field values has been removed;
+    instead, the reasoning for using a sensible value is given.
+    (Section 5.3)
+
+
+Section 1.2, paragraph 18:
+OLD:
+
+    1
+       110 (warn-code)  30
+       111 (warn-code)  31
+       112 (warn-code)  31
+       113 (warn-code)  31
+       199 (warn-code)  31
+
+NEW:
+
+    1
+       110 (warn-code)  31
+       111 (warn-code)  31
+       112 (warn-code)  31
+       113 (warn-code)  31
+       199 (warn-code)  32
+
+
+Section 1.2, paragraph 19:
+OLD:
+
+    2
+       214 (warn-code)  31
+       299 (warn-code)  31
+
+NEW:
+
+    2
+       214 (warn-code)  32
+       299 (warn-code)  32
+
+
+Section 1.2, paragraph 20:
+OLD:
+
+    A
+       age  10
+       Age header field  20
+
+NEW:
+
+    A
+       age  11
+       Age header field  21
+
+
+Section 1.2, paragraph 23:
+OLD:
+
+    E
+       Expires header field  27
+       explicit expiration time  10
+
+NEW:
+
+    E
+       Expires header field  28
+       explicit expiration time  11
+
+
+Section 1.2, paragraph 24:
+OLD:
+
+    F
+       fresh  10
+       freshness lifetime  10
+
+NEW:
+
+    F
+       fresh  11
+       freshness lifetime  11
+
+
+Section 1.2, paragraph 25:
+OLD:
+
+    G
+       Grammar
+          Age  20
+          Cache-Control  21
+          cache-directive  21
+          delta-seconds  5
+          Expires  27
+          extension-pragma  28
+          Pragma  28
+          pragma-directive  28
+          warn-agent  29
+          warn-code  29
+          warn-date  29
+          warn-text  29
+          Warning  29
+          warning-value  29
+
+NEW:
+
+    G
+       Grammar
+          Age  21
+          Cache-Control  22
+          cache-directive  22
+          delta-seconds  5
+          Expires  28
+          extension-pragma  29
+          Pragma  29
+          pragma-directive  29
+          warn-agent  29
+          warn-code  29
+          warn-date  29
+          warn-text  29
+          Warning  29
+          warning-value  29
+
+
+Section 1.2, paragraph 26:
+OLD:
+
+    H
+       Heuristic Expiration (warn-text)  31
+       heuristic expiration time  10
+ 
+    M
+       max-age (cache directive)  21, 26
+       max-stale (cache directive)  22
+       min-fresh (cache directive)  22
+       Miscellaneous Persistent Warning (warn-text)  31
+       Miscellaneous Warning (warn-text)  31
+       must-revalidate (cache directive)  23
+
+NEW:
+
+    H
+       Heuristic Expiration (warn-text)  31
+       heuristic expiration time  11
+    M
+       max-age (cache directive)  22, 26
+       max-stale (cache directive)  22
+       min-fresh (cache directive)  22
+       Miscellaneous Persistent Warning (warn-text)  32
+       Miscellaneous Warning (warn-text)  32
+       must-revalidate (cache directive)  24
+
+
+Section 1.2, paragraph 27:
+OLD:
+
+    N
+       no-cache (cache directive)  22, 24
+       no-store (cache directive)  22, 24
+       no-transform (cache directive)  23, 25
+
+NEW:
+
+    N
+       no-cache (cache directive)  23, 25
+       no-store (cache directive)  23, 24
+       no-transform (cache directive)  23, 25
+
+
+Section 1.2, paragraph 29:
+OLD:
+
+    P
+       Pragma header field  28
+       private (cache directive)  25
+       private cache  4
+       proxy-revalidate (cache directive)  26
+       public (cache directive)  25
+
+NEW:
+
+    P
+       Pragma header field  29
+       private (cache directive)  25
+       private cache  4
+       proxy-revalidate (cache directive)  26
+       public (cache directive)  25
+
+
+Section 1.2, paragraph 31:
+OLD:
+
+    S
+       s-maxage (cache directive)  26
+       shared cache  4
+       stale  10
+       strong validator  18
+
+NEW:
+
+    S
+       s-maxage (cache directive)  27
+       shared cache  4
+       stale  11
+       strong validator  18
+
+
+Section 1.2, paragraph 32:
+OLD:
+
+    T
+       Transformation Applied (warn-text)  31
+
+NEW:
+
+    T
+       Transformation Applied (warn-text)  32
+
+
+Section 1.2, paragraph 33:
+OLD:
+
+    V
+       validator  15
+
+NEW:
+
+    V
+       validator  16
+

draft-ietf-httpbis/latest/auth48/rfc7234.diff.html

@@ -185 +185 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 11, line 41</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 12, line 8</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 8, line 23</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 8, line 26</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   Range specifiers ([RFC7233]).  After several such transfers, a cache</td><td> </td><td class="right">   Range specifiers ([RFC7233]).  After several such transfers, a cache</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   might have received several ranges of the same representation.  A</td><td> </td><td class="right">   might have received several ranges of the same representation.  A</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   cache MAY combine these ranges into a single stored response, and</td><td> </td><td class="right">   cache MAY combine these ranges into a single stored response, and</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   reuse that response to satisfy later requests, if they all share the</td><td> </td><td class="right">   reuse that response to satisfy later requests, if they all share the</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   same strong validator and the cache complies with the client</td><td> </td><td class="right">   same strong validator and the cache complies with the client</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   requirements in Section 4.3 of [RFC7233].</td><td> </td><td class="right">   requirements in Section 4.3 of [RFC7233].</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   When combining the new response with one or more stored responses, a</td><td> </td><td class="right">   When combining the new response with one or more stored responses, a</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   cache MUST:</td><td> </td><td class="right">   cache MUST:</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0004" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  delete any Warning header fields in the stored response with <span class="delete">warn-</span></td><td> </td><td class="rblock">   o  delete any Warning header fields in the stored response with</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      code</span> 1xx (see Section 5.5);</td><td> </td><td class="rblock">      <span class="insert">warn-code</span> 1xx (see Section 5.5);</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0005" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  retain any Warning header fields in the stored response with <span class="delete">warn-</span></td><td> </td><td class="rblock">   o  retain any Warning header fields in the stored response with</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      code</span> 2xx; and,</td><td> </td><td class="rblock">      <span class="insert">warn-code</span> 2xx; and,</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  use other header fields provided in the new response, aside from</td><td> </td><td class="right">   o  use other header fields provided in the new response, aside from</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      Content-Range, to replace all instances of the corresponding</td><td> </td><td class="right">      Content-Range, to replace all instances of the corresponding</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      header fields in the stored response.</td><td> </td><td class="right">      header fields in the stored response.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">4.  Constructing Responses from Caches</td><td> </td><td class="right">4.  Constructing Responses from Caches</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   When presented with a request, a cache MUST NOT reuse a stored</td><td> </td><td class="right">   When presented with a request, a cache MUST NOT reuse a stored</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   response, unless:</td><td> </td><td class="right">   response, unless:</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 11, line 41</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 12, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   freshness_lifetime is defined in Section 4.2.1; current_age is</td><td> </td><td class="right">   freshness_lifetime is defined in Section 4.2.1; current_age is</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   defined in Section 4.2.3.</td><td> </td><td class="right">   defined in Section 4.2.3.</td><td class="lineno" valign="top"></td></tr>
@@ -196 +225 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   o  Although all date formats are specified to be case-sensitive, a</td><td> </td><td class="right">   o  Although all date formats are specified to be case-sensitive, a</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0004" /></td></tr>
+      <tr><td><a name="diff0006" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      cache recipient SHOULD match day, week, and time-zone names <span class="delete">case-</span></td><td> </td><td class="rblock">      cache recipient SHOULD match day, week, and time-zone names</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      insensitively.</span></td><td> </td><td class="rblock">      <span class="insert">case-insensitively.</span></td><td class="lineno" valign="top"></td></tr>
@@ -210 +239 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   o  A cache recipient SHOULD consider a date with a zone abbreviation</td><td> </td><td class="right">   o  A cache recipient SHOULD consider a date with a zone abbreviation</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 15, line 22</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 15, line 40</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 15, line 22</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 15, line 40</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   according to the calculations in Section 4.2.</td><td> </td><td class="right">   according to the calculations in Section 4.2.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -221 +250 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   A cache MUST NOT send stale responses unless it is disconnected</td><td> </td><td class="right">   A cache MUST NOT send stale responses unless it is disconnected</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   (i.e., it cannot contact the origin server or otherwise find a</td><td> </td><td class="right">   (i.e., it cannot contact the origin server or otherwise find a</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0005" /></td></tr>
+      <tr><td><a name="diff0007" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   forward path) or doing so is explicitly allowed (e.g., by the <span class="delete">max-</span></td><td> </td><td class="rblock">   forward path) or doing so is explicitly allowed (e.g., by the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   stale</span> request directive; see Section 5.2.1).</td><td> </td><td class="rblock">   <span class="insert">max-stale</span> request directive; see Section 5.2.1).</td><td class="lineno" valign="top"></td></tr>
@@ -235 +264 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   that merely became stale in transit.</td><td> </td><td class="right">   that merely became stale in transit.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 16, line 6</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 16, line 25</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 16, line 6</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 16, line 25</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">4.3.1.  Sending a Validation Request</td><td> </td><td class="right">4.3.1.  Sending a Validation Request</td><td class="lineno" valign="top"></td></tr>
@@ -246 +275 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   One such validator is the timestamp given in a Last-Modified header</td><td> </td><td class="right">   One such validator is the timestamp given in a Last-Modified header</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0006" /></td></tr>
+      <tr><td><a name="diff0008" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   field (Section 2.2 of [RFC7232]), which can be used in an <span class="delete">If-</span></td><td> </td><td class="rblock">   field (Section 2.2 of [RFC7232]), which can be used in an</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Modified-Since</span> header field for response validation, or in an <span class="delete">If-</span></td><td> </td><td class="rblock">   <span class="insert">If-Modified-Since</span> header field for response validation, or in an</td><td class="lineno" valign="top"></td></tr>
@@ -261 +290 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   the listed entity-tags).</td><td> </td><td class="right">   the listed entity-tags).</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 16, line 42</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 17, line 12</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 16, line 42</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 17, line 12</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   received in that request with respect to the corresponding validators</td><td> </td><td class="right">   received in that request with respect to the corresponding validators</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   contained within the selected response.  A cache MUST NOT evaluate</td><td> </td><td class="right">   contained within the selected response.  A cache MUST NOT evaluate</td><td class="lineno" valign="top"></td></tr>
@@ -272 +301 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   The proper evaluation of conditional requests by a cache depends on</td><td> </td><td class="right">   The proper evaluation of conditional requests by a cache depends on</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   the received precondition header fields and their precedence, as</td><td> </td><td class="right">   the received precondition header fields and their precedence, as</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0007" /></td></tr>
+      <tr><td><a name="diff0009" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   defined in Section 6 of [RFC7232].  The If-Match and <span class="delete">If-Unmodified-</span></td><td> </td><td class="rblock">   defined in Section 6 of [RFC7232].  The If-Match and</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Since</span> conditional header fields are not applicable to a cache.</td><td> </td><td class="rblock">   <span class="insert">If-Unmodified-Since</span> conditional header fields are not applicable to a</td><td class="lineno" valign="top"></td></tr>
@@ -287 +316 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   response.</td><td> </td><td class="right">   response.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 17, line 28</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 17, line 48</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 17, line 28</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 17, line 48</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   corresponding stored response, as updated by the 304 response</td><td> </td><td class="right">   corresponding stored response, as updated by the 304 response</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   metadata (Section 4.3.4).</td><td> </td><td class="right">   metadata (Section 4.3.4).</td><td class="lineno" valign="top"></td></tr>
@@ -298 +327 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   selected stored response) if one of the following cases is true: 1)</td><td> </td><td class="right">   selected stored response) if one of the following cases is true: 1)</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   the selected stored response has a Last-Modified field-value that is</td><td> </td><td class="right">   the selected stored response has a Last-Modified field-value that is</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0008" /></td></tr>
+      <tr><td><a name="diff0010" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   earlier than or equal to the conditional timestamp; 2) no <span class="delete">Last-</span></td><td> </td><td class="rblock">   earlier than or equal to the conditional timestamp; 2) no</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Modified</span> field is present in the selected stored response, but it has</td><td> </td><td class="rblock">   <span class="insert">Last-Modified</span> field is present in the selected stored response, but</td><td class="lineno" valign="top"></td></tr>
@@ -317 +346 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   upon its status code:</td><td> </td><td class="right">   upon its status code:</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 19, line 23</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 19, line 46</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 18, line 43</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 19, line 18</em></th><td></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  If the new response does not include any form of validator (such</td><td> </td><td class="right">   o  If the new response does not include any form of validator (such</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      as in the case where a client generates an If-Modified-Since</td><td> </td><td class="right">      as in the case where a client generates an If-Modified-Since</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      request from a source other than the Last-Modified response header</td><td> </td><td class="right">      request from a source other than the Last-Modified response header</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      field), and there is only one stored response, and that stored</td><td> </td><td class="right">      field), and there is only one stored response, and that stored</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      response also lacks a validator, then that stored response is</td><td> </td><td class="right">      response also lacks a validator, then that stored response is</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      selected for update.</td><td> </td><td class="right">      selected for update.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   If a stored response is selected for update, the cache MUST:</td><td> </td><td class="right">   If a stored response is selected for update, the cache MUST:</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0011" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  delete any Warning header fields in the stored response with <span class="delete">warn-</span></td><td> </td><td class="rblock">   o  delete any Warning header fields in the stored response with</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      code</span> 1xx (see Section 5.5);</td><td> </td><td class="rblock">      <span class="insert">warn-code</span> 1xx (see Section 5.5);</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0012" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  retain any Warning header fields in the stored response with <span class="delete">warn-</span></td><td> </td><td class="rblock">   o  retain any Warning header fields in the stored response with</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      code</span> 2xx; and,</td><td> </td><td class="rblock">      <span class="insert">warn-code</span> 2xx; and,</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  use other header fields provided in the 304 (Not Modified)</td><td> </td><td class="right">   o  use other header fields provided in the 304 (Not Modified)</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      response to replace all instances of the corresponding header</td><td> </td><td class="right">      response to replace all instances of the corresponding header</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      fields in the stored response.</td><td> </td><td class="right">      fields in the stored response.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">4.3.5.  Freshening Responses via HEAD</td><td> </td><td class="right">4.3.5.  Freshening Responses via HEAD</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   A response to the HEAD method is identical to what an equivalent</td><td> </td><td class="right">   A response to the HEAD method is identical to what an equivalent</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   request made with a GET would have been, except it lacks a body.</td><td> </td><td class="right">   request made with a GET would have been, except it lacks a body.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   This property of HEAD responses can be used to invalidate or update a</td><td> </td><td class="right">   This property of HEAD responses can be used to invalidate or update a</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 19, line 23</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 19, line 46</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   desired even if it has changed.</td><td> </td><td class="right">   desired even if it has changed.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -328 +386 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   the stored response and HEAD response have matching values for any</td><td> </td><td class="right">   the stored response and HEAD response have matching values for any</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   received validator fields (ETag and Last-Modified) and, if the HEAD</td><td> </td><td class="right">   received validator fields (ETag and Last-Modified) and, if the HEAD</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0009" /></td></tr>
+      <tr><td><a name="diff0013" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   response has a Content-Length header field, the value of <span class="delete">Content-</span></td><td> </td><td class="rblock">   response has a Content-Length header field, the value of</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Length</span> matches that of the stored response, the cache SHOULD update</td><td> </td><td class="rblock">   <span class="insert">Content-Length</span> matches that of the stored response, the cache SHOULD</td><td class="lineno" valign="top"></td></tr>
@@ -337 +395 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   HEAD response, the cache MUST:</td><td> </td><td class="right">   HEAD response, the cache MUST:</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno" valign="top"></td><td class="left">   o  delete any Warning header fields in the stored response with warn-</td><td> </td><td class="right">   o  delete any Warning header fields in the stored response with warn-</td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno" valign="top"></td><td class="left">      code 1xx (see Section 5.5);</td><td> </td><td class="right">      code 1xx (see Section 5.5);</td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno" valign="top"></td><td class="left">   o  retain any Warning header fields in the stored response with warn-</td><td> </td><td class="right">   o  retain any Warning header fields in the stored response with warn-</td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno" valign="top"></td><td class="left">      code 2xx; and,</td><td> </td><td class="right">      code 2xx; and,</td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 21, line 24</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 21, line 47</em></th><td></td></tr>
+      <tr><td><a name="diff0014" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  delete any Warning header fields in the stored response with <span class="delete">warn-</span></td><td> </td><td class="rblock">   o  delete any Warning header fields in the stored response with</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      code</span> 1xx (see Section 5.5);</td><td> </td><td class="rblock">      <span class="insert">warn-code</span> 1xx (see Section 5.5);</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td><a name="diff0015" /></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  retain any Warning header fields in the stored response with <span class="delete">warn-</span></td><td> </td><td class="rblock">   o  retain any Warning header fields in the stored response with</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      code</span> 2xx; and,</td><td> </td><td class="rblock">      <span class="insert">warn-code</span> 2xx; and,</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   o  use other header fields provided in the HEAD response to replace</td><td> </td><td class="right">   o  use other header fields provided in the HEAD response to replace</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      all instances of the corresponding header fields in the stored</td><td> </td><td class="right">      all instances of the corresponding header fields in the stored</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      response and append new header fields to the stored response's</td><td> </td><td class="right">      response and append new header fields to the stored response's</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      header section unless otherwise restricted by the Cache-Control</td><td> </td><td class="right">      header section unless otherwise restricted by the Cache-Control</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">      header field.</td><td> </td><td class="right">      header field.</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">4.4.  Invalidation</td><td> </td><td class="right">4.4.  Invalidation</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno" valign="top"></td><td class="left">   Because unsafe request methods (Section 4.2.1 of [RFC7231]) such as</td><td> </td><td class="right">   Because unsafe request methods (Section 4.2.1 of [RFC7231]) such as</td><td class="lineno" valign="top"></td></tr>
+      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l12" /><small>skipping to change at</small><em> page 21, line 24</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 21, line 47</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   Cache-Control directives defined elsewhere are handled.</td><td> </td><td class="right">   Cache-Control directives defined elsewhere are handled.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -355 +424 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   not possible to target a directive to a specific cache.</td><td> </td><td class="right">   not possible to target a directive to a specific cache.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0010" /></td></tr>
+      <tr><td><a name="diff0016" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   Cache directives are identified by a token, to be compared <span class="delete">case-</span></td><td> </td><td class="rblock">   Cache directives are identified by a token, to be compared</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   insensitively,</span> and have an optional argument, that can use both token</td><td> </td><td class="rblock">   <span class="insert">case-insensitively,</span> and have an optional argument, that can use both</td><td class="lineno" valign="top"></td></tr>
@@ -373 +442 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 23, line 5</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 23, line 27</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 23, line 5</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 23, line 27</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   The "no-cache" request directive indicates that a cache MUST NOT use</td><td> </td><td class="right">   The "no-cache" request directive indicates that a cache MUST NOT use</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   a stored response to satisfy the request without successful</td><td> </td><td class="right">   a stored response to satisfy the request without successful</td><td class="lineno" valign="top"></td></tr>
@@ -384 +453 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   directive applies to both private and shared caches.  "MUST NOT</td><td> </td><td class="right">   directive applies to both private and shared caches.  "MUST NOT</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   store" in this context means that the cache MUST NOT intentionally</td><td> </td><td class="right">   store" in this context means that the cache MUST NOT intentionally</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0011" /></td></tr>
+      <tr><td><a name="diff0017" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   store the information in non-volatile storage, and MUST make a <span class="delete">best-</span></td><td> </td><td class="rblock">   store the information in non-volatile storage, and MUST make a</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   effort</span> attempt to remove the information from volatile storage as</td><td> </td><td class="rblock">   <span class="insert">best-effort</span> attempt to remove the information from volatile storage</td><td class="lineno" valign="top"></td></tr>
@@ -399 +468 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l12" /><small>skipping to change at</small><em> page 24, line 34</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 25, line 10</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 24, line 34</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 25, line 10</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   still allowing caching of the rest of the response.</td><td> </td><td class="right">   still allowing caching of the rest of the response.</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -410 +479 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   Note: Although it has been back-ported to many implementations, some</td><td> </td><td class="right">   Note: Although it has been back-ported to many implementations, some</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0012" /></td></tr>
+      <tr><td><a name="diff0018" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   HTTP/1.0 caches will not recognize or obey this directive.  Also, <span class="delete">no-</span></td><td> </td><td class="rblock">   HTTP/1.0 caches will not recognize or obey this directive.  Also,</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   cache</span> response directives with field-names are often handled by</td><td> </td><td class="rblock">   <span class="insert">no-cache</span> response directives with field-names are often handled by</td><td class="lineno" valign="top"></td></tr>
@@ -423 +492 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   directive applies to both private and shared caches.  "MUST NOT</td><td> </td><td class="right">   directive applies to both private and shared caches.  "MUST NOT</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   store" in this context means that the cache MUST NOT intentionally</td><td> </td><td class="right">   store" in this context means that the cache MUST NOT intentionally</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0013" /></td></tr>
+      <tr><td><a name="diff0019" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   store the information in non-volatile storage, and MUST make a <span class="delete">best-</span></td><td> </td><td class="rblock">   store the information in non-volatile storage, and MUST make a</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   effort</span> attempt to remove the information from volatile storage as</td><td> </td><td class="rblock">   <span class="insert">best-effort</span> attempt to remove the information from volatile storage</td><td class="lineno" valign="top"></td></tr>
@@ -438 +507 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   (regardless of whether it implements a cache) MUST NOT transform the</td><td> </td><td class="right">   (regardless of whether it implements a cache) MUST NOT transform the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 30, line 38</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 31, line 23</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 30, line 38</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 31, line 23</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   Warnings have accompanying warn-text that describes the error, e.g.,</td><td> </td><td class="right">   Warnings have accompanying warn-text that describes the error, e.g.,</td><td class="lineno" valign="top"></td></tr>
@@ -449 +518 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   containing that warn-date before storing, forwarding, or using the</td><td> </td><td class="right">   containing that warn-date before storing, forwarding, or using the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   message.  This allows recipients to exclude warning-values that were</td><td> </td><td class="right">   message.  This allows recipients to exclude warning-values that were</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0014" /></td></tr>
+      <tr><td><a name="diff0020" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   improperly retained after a cache validation.  If all of the <span class="delete">warning-</span></td><td> </td><td class="rblock">   improperly retained after a cache validation.  If all of the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   values</span> are excluded, the recipient MUST exclude the Warning header</td><td> </td><td class="rblock">   <span class="insert">warning-values</span> are excluded, the recipient MUST exclude the Warning</td><td class="lineno" valign="top"></td></tr>
@@ -464 +533 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 31, line 32</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 32, line 15</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l16" /><small>skipping to change at</small><em> page 31, line 32</em></th><th> </th><th><a name="part-r16" /><small>skipping to change at</small><em> page 32, line 15</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">5.5.5.  Warning: 199 - "Miscellaneous Warning"</td><td> </td><td class="right">5.5.5.  Warning: 199 - "Miscellaneous Warning"</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -475 +544 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   This Warning code MUST be added by a proxy if it applies any</td><td> </td><td class="right">   This Warning code MUST be added by a proxy if it applies any</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0015" /></td></tr>
+      <tr><td><a name="diff0021" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">   transformation to the representation, such as changing the <span class="delete">content-</span></td><td> </td><td class="rblock">   transformation to the representation, such as changing the</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   coding,</span> media-type, or modifying the representation data, unless this</td><td> </td><td class="rblock">   <span class="insert">content-coding,</span> media-type, or modifying the representation data,</td><td class="lineno" valign="top"></td></tr>
@@ -490 +559 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   User agents often have history mechanisms, such as "Back" buttons and</td><td> </td><td class="right">   User agents often have history mechanisms, such as "Back" buttons and</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
-      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 39, line 50</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 41, line 8</em></th><td></td></tr>
+      <tr bgcolor="gray" ><td></td><th><a name="part-l17" /><small>skipping to change at</small><em> page 39, line 50</em></th><th> </th><th><a name="part-r17" /><small>skipping to change at</small><em> page 41, line 8</em></th><td></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   warn-agent = ( uri-host [ ":" port ] ) / pseudonym</td><td> </td><td class="right">   warn-agent = ( uri-host [ ":" port ] ) / pseudonym</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   warn-code = 3DIGIT</td><td> </td><td class="right">   warn-code = 3DIGIT</td><td class="lineno" valign="top"></td></tr>
@@ -501 +570 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   1</td><td> </td><td class="right">   1</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0016" /></td></tr>
+      <tr><td><a name="diff0022" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      110 (warn-code)  3<span class="delete">0</span></td><td> </td><td class="rblock">      110 (warn-code)  3<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      111 (warn-code)  31</td><td> </td><td class="right">      111 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      112 (warn-code)  31</td><td> </td><td class="right">      112 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      113 (warn-code)  31</td><td> </td><td class="right">      113 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0017" /></td></tr>
+      <tr><td><a name="diff0023" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      199 (warn-code)  3<span class="delete">1</span></td><td> </td><td class="rblock">      199 (warn-code)  3<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   2</td><td> </td><td class="right">   2</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0018" /></td></tr>
+      <tr><td><a name="diff0024" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      214 (warn-code)  <span class="delete">31</span></td><td> </td><td class="rblock">      214 (warn-code)  <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      299 (warn-code)  <span class="delete">31</span></td><td> </td><td class="rblock">      299 (warn-code)  <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0019" /></td></tr>
+      <tr><td><a name="diff0025" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      age  <span class="delete">10</span></td><td> </td><td class="rblock">      age  <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Age header field  <span class="delete">20</span></td><td> </td><td class="rblock">      Age header field  <span class="insert">21</span></td><td class="lineno" valign="top"></td></tr>
@@ -529 +598 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   E</td><td> </td><td class="right">   E</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0020" /></td></tr>
+      <tr><td><a name="diff0026" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Expires header field  <span class="delete">27</span></td><td> </td><td class="rblock">      Expires header field  <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      explicit expiration time  <span class="delete">10</span></td><td> </td><td class="rblock">      explicit expiration time  <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   F</td><td> </td><td class="right">   F</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0021" /></td></tr>
+      <tr><td><a name="diff0027" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      fresh  <span class="delete">10</span></td><td> </td><td class="rblock">      fresh  <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      freshness lifetime  <span class="delete">10</span></td><td> </td><td class="rblock">      freshness lifetime  <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
@@ -540 +609 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   G</td><td> </td><td class="right">   G</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      Grammar</td><td> </td><td class="right">      Grammar</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0022" /></td></tr>
+      <tr><td><a name="diff0028" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         Age  <span class="delete">20</span></td><td> </td><td class="rblock">         Age  21</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         Cache-Control</span>  21</td><td> </td><td class="rblock">         <span class="insert">Cache-Control  22</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-directive  <span class="delete">21</span></td><td> </td><td class="rblock">         cache-directive  <span class="insert">22</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">         delta-seconds  5</td><td> </td><td class="right">         delta-seconds  5</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0023" /></td></tr>
+      <tr><td><a name="diff0029" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">         Expires  <span class="delete">27</span></td><td> </td><td class="rblock">         Expires  28</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         extension-pragma</span>  28</td><td> </td><td class="rblock">         <span class="insert">extension-pragma  29</span></td><td class="lineno" valign="top"></td></tr>
@@ -559 +628 @@
       <tr><td class="lineno" valign="top"></td><td class="left">   H</td><td> </td><td class="right">   H</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      Heuristic Expiration (warn-text)  31</td><td> </td><td class="right">      Heuristic Expiration (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0024" /></td></tr>
+      <tr><td><a name="diff0030" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      heuristic expiration time  <span class="delete">10</span></td><td> </td><td class="rblock">      heuristic expiration time  <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   M</td><td> </td><td class="right">   M</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0025" /></td></tr>
+      <tr><td><a name="diff0031" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      max-age (cache directive)  2<span class="delete">1</span>, 26</td><td> </td><td class="rblock">      max-age (cache directive)  2<span class="insert">2</span>, 26</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      max-stale (cache directive)  22</td><td> </td><td class="right">      max-stale (cache directive)  22</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      min-fresh (cache directive)  22</td><td> </td><td class="right">      min-fresh (cache directive)  22</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0026" /></td></tr>
+      <tr><td><a name="diff0032" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Miscellaneous Persistent Warning (warn-text)  <span class="delete">31</span></td><td> </td><td class="rblock">      Miscellaneous Persistent Warning (warn-text)  <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Miscellaneous Warning (warn-text)  <span class="delete">31</span></td><td> </td><td class="rblock">      Miscellaneous Warning (warn-text)  <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
@@ -573 +642 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   N</td><td> </td><td class="right">   N</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0027" /></td></tr>
+      <tr><td><a name="diff0033" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      no-cache (cache directive)  <span class="delete">22, 24</span></td><td> </td><td class="rblock">      no-cache (cache directive)  <span class="insert">23, 25</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      no-store (cache directive)  <span class="delete">22,</span> 24</td><td> </td><td class="rblock">      no-store (cache directive)  <span class="insert">23,</span> 24</td><td class="lineno" valign="top"></td></tr>
@@ -582 +651 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   P</td><td> </td><td class="right">   P</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0028" /></td></tr>
+      <tr><td><a name="diff0034" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Pragma header field  2<span class="delete">8</span></td><td> </td><td class="rblock">      Pragma header field  2<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      private (cache directive)  25</td><td> </td><td class="right">      private (cache directive)  25</td><td class="lineno" valign="top"></td></tr>
@@ -594 +663 @@
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   S</td><td> </td><td class="right">   S</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0029" /></td></tr>
+      <tr><td><a name="diff0035" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      s-maxage (cache directive)  2<span class="delete">6</span></td><td> </td><td class="rblock">      s-maxage (cache directive)  2<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      shared cache  4</td><td> </td><td class="right">      shared cache  4</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0030" /></td></tr>
+      <tr><td><a name="diff0036" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      stale  1<span class="delete">0</span></td><td> </td><td class="rblock">      stale  1<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">      strong validator  18</td><td> </td><td class="right">      strong validator  18</td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   T</td><td> </td><td class="right">   T</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0031" /></td></tr>
+      <tr><td><a name="diff0037" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      Transformation Applied (warn-text)  3<span class="delete">1</span></td><td> </td><td class="rblock">      Transformation Applied (warn-text)  3<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left">   V</td><td> </td><td class="right">   V</td><td class="lineno" valign="top"></td></tr>
-      <tr><td><a name="diff0032" /></td></tr>
+      <tr><td><a name="diff0038" /></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="lblock">      validator  1<span class="delete">5</span></td><td> </td><td class="rblock">      validator  1<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
       <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
@@ -620 +689 @@
 
      <tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
-     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 32 change blocks.&nbsp;</a></th></tr>
-     <tr class="stats"><td></td><th><i>148 lines changed or deleted</i></th><th><i> </i></th><th><i>134 lines changed or added</i></th><td></td></tr>
+     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 38 change blocks.&nbsp;</a></th></tr>
+     <tr class="stats"><td></td><th><i>160 lines changed or deleted</i></th><th><i> </i></th><th><i>146 lines changed or added</i></th><td></td></tr>
      <tr><td colspan="5" align="center" class="small"><br/>This html diff was produced by rfcdiff 1.38. The latest version is available from <a href="http://www.tools.ietf.org/tools/rfcdiff/" >http://tools.ietf.org/tools/rfcdiff/</a> </td></tr>
    </table>

draft-ietf-httpbis/latest/auth48/rfc7234.txt

@@ -425 +425 @@
    cache MUST:
 
-   o  delete any Warning header fields in the stored response with warn-
-      code 1xx (see Section 5.5);
-
-   o  retain any Warning header fields in the stored response with warn-
-      code 2xx; and,
+   o  delete any Warning header fields in the stored response with
+      warn-code 1xx (see Section 5.5);
+
+   o  retain any Warning header fields in the stored response with
+      warn-code 2xx; and,
 
    o  use other header fields provided in the new response, aside from
@@ -1044 +1044 @@
    If a stored response is selected for update, the cache MUST:
 
-   o  delete any Warning header fields in the stored response with warn-
-      code 1xx (see Section 5.5);
-
-   o  retain any Warning header fields in the stored response with warn-
-      code 2xx; and,
+   o  delete any Warning header fields in the stored response with
+      warn-code 1xx (see Section 5.5);
+
+   o  retain any Warning header fields in the stored response with
+      warn-code 2xx; and,
 
    o  use other header fields provided in the 304 (Not Modified)
@@ -1091 +1091 @@
    HEAD response, the cache MUST:
 
-   o  delete any Warning header fields in the stored response with warn-
-      code 1xx (see Section 5.5);
-
-   o  retain any Warning header fields in the stored response with warn-
-      code 2xx; and,
+   o  delete any Warning header fields in the stored response with
+      warn-code 1xx (see Section 5.5);
+
+   o  retain any Warning header fields in the stored response with
+      warn-code 2xx; and,
 
    o  use other header fields provided in the HEAD response to replace