Changeset 593 for draft-ietf-httpbis/latest/p2-semantics.xml

Timestamp:

Jun 13, 2009, 12:12:22 AM (10 years ago)

Author:

julian.reschke@…

Message:

Allow Referer value of "about:blank" as alternative to not specifying it (related to #144)

File:

• draft-ietf-httpbis/latest/p2-semantics.xml (modified) (3 diffs)

draft-ietf-httpbis/latest/p2-semantics.xml

@@ -2048 +2048 @@
   <x:anchor-alias value="Referer-v"/>
 <t>
-   The request-header field "Referer" [sic] allows the client to specify,
-   for the server's benefit, the address (URI) of the resource from
-   which the request-target was obtained (the "referrer", although the
-   header field is misspelled.) The Referer request-header allows a
-   server to generate lists of back-links to resources for interest,
-   logging, optimized caching, etc. It also allows obsolete or mistyped
-   links to be traced for maintenance. The Referer field &MUST-NOT; be
-   sent if the request-target was obtained from a source that does not have
-   its own URI, such as input from the user keyboard.
+   The request-header field "Referer" [sic] allows the client to specify, for
+   the server's benefit, the address (URI) of the resource from which the
+   request-target was obtained (the "referrer", although the header field is
+   misspelled.).
+</t>
+<t>
+   The Referer header allows servers to generate lists of back-links to
+   resources for interest, logging, optimized caching, etc. It also allows
+   obsolete or mistyped links to be traced for maintenance. Some servers use
+   Referer as a means of controlling where they allow links from (so-called
+   "deep linking"), but it should be noted that legitimate requests are not
+   required to contain a Referer header field.
+</t>
+<t>
+   If the request-target was obtained from a source that does not have its own
+   URI (e.g., input from the user keyboard), the Referer field MUST either be
+   sent with the value "about:blank", or not be sent at all. Note that this
+   requirement does not apply to sources with non-HTTP URIs (e.g., FTP).
 </t>
 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="Referer"/><iref primary="true" item="Grammar" subitem="Referer-v"/>
@@ -3210 +3219 @@
 </t>
 <t>
+  Allow Referer value of "about:blank" as alternative to not specifying it. 
+  (<xref target="header.referer"/>)
+</t>
+<t>
   In the description of the Server header, the Via field
   was described as a SHOULD. The requirement was and is stated
@@ -3571 +3584 @@
   <list style="symbols"> 
     <t>
+      <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/144"/>:
+      "Clarify when Referer is sent"
+    </t>
+    <t>
       <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/164"/>:
       "status codes vs methods"