Changeset 2058 for draft-ietf-httpbis/latest/p2-semantics.xml

Timestamp:

27/12/12 16:55:15 (8 years ago)

Author:

fielding@…

Message:

editorial improvements to 5xx status codes; partly addresses #419

File:

• draft-ietf-httpbis/latest/p2-semantics.xml (modified) (8 diffs)

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

@@ -3128 +3128 @@
   <x:anchor-alias value="403 (Forbidden)"/>
 <t>
-   The <x:dfn>403 (Forbidden)</x:dfn> status code indicates that the origin
+   The <x:dfn>403 (Forbidden)</x:dfn> status code indicates that the
    server understood the request but refuses to authorize it.
    A server that wishes to make public why the request has been forbidden
@@ -3134 +3134 @@
 </t>
 <t>
-   If authentication credentials were provided in the request, the origin
+   If authentication credentials were provided in the request, the
    server considers them insufficient to grant access.
    The client &SHOULD-NOT; repeat the request with the same credentials.
@@ -3378 +3378 @@
   <x:anchor-alias value="500 (Internal Server Error)"/>
 <t>
-   The server encountered an unexpected condition which prevented it
-   from fulfilling the request.
+   The <x:dfn>500 (Internal Server Error)</x:dfn> status code indicates that
+   the server encountered an unexpected condition which prevented it from
+   fulfilling the request.
 </t>
 </section>
@@ -3387 +3388 @@
   <x:anchor-alias value="501 (Not Implemented)"/>
 <t>
-   The server does not support the functionality required to fulfill the
-   request. This is the appropriate response when the server does not
-   recognize the request method and is not capable of supporting it for
-   any resource.
+   The <x:dfn>501 (Not Implemented)</x:dfn> status code indicates that the
+   server does not support the functionality required to fulfill the request.
+   This is the appropriate response when the server does not recognize the
+   request method and is not capable of supporting it for any resource.
 </t>
 </section>
@@ -3398 +3399 @@
   <x:anchor-alias value="502 (Bad Gateway)"/>
 <t>
-   The server, while acting as a gateway or proxy, received an invalid
-   response from the upstream server it accessed in attempting to
-   fulfill the request.
+   The <x:dfn>502 (Bad Gateway)</x:dfn> status code indicates that the server,
+   while acting as a gateway or proxy, received an invalid response from an
+   inbound server it accessed while attempting to fulfill the request.
 </t>
 </section>
@@ -3408 +3409 @@
   <x:anchor-alias value="503 (Service Unavailable)"/>
 <t>
-   The server is currently unable to handle the request due to a
-   temporary overloading or maintenance of the server.
-</t>
-<t>
-   The implication is that this is a temporary condition which will be
-   alleviated after some delay. If known, the length of the delay &MAY; be
-   indicated in a <x:ref>Retry-After</x:ref> header field
-   (<xref target="header.retry-after"/>). If no Retry-After is given, the
-   client &SHOULD; handle the response as it would for a <x:ref>500 (Internal
-   Server Error)</x:ref> response.
+   The <x:dfn>503 (Service Unavailable)</x:dfn> status code indicates that the
+   server is currently unable to handle the request due to a temporary overload
+   or scheduled maintenance, which will likely be alleviated after some delay.
+   The server &MAY; send a <x:ref>Retry-After</x:ref> header field
+   (<xref target="header.retry-after"/>) to suggest an appropriate
+   amount of time for the client to wait before retrying the request.
 </t>
 <x:note>
   <t>
     &Note; The existence of the 503 status code does not imply that a
-    server has to use it when becoming overloaded. Some servers might wish
-    to simply refuse the connection.
+    server has to use it when becoming overloaded. Some servers might
+    simply refuse the connection.
   </t>
 </x:note>
@@ -3432 +3429 @@
   <x:anchor-alias value="504 (Gateway Timeout)"/>
 <t>
-   The server, while acting as a gateway or proxy, did not receive a
-   timely response from the upstream server specified by the URI (e.g.,
-   HTTP, FTP, LDAP) or some other auxiliary server (e.g., DNS) it needed
-   to access in attempting to complete the request.
-</t>
-<x:note>
-  <t>
-    <x:h>Note</x:h> to implementers: some deployed proxies are known to
-    send <x:ref>400 (Bad Request)</x:ref> or <x:ref>500 (Internal Server
-    Error)</x:ref> when DNS lookups time out.
-  </t>
-</x:note>
+   The <x:dfn>504 (Gateway Timeout)</x:dfn> status code indicates that the
+   server, while acting as a gateway or proxy, did not receive a timely
+   response from an upstream server it needed to access in order to
+   complete the request.
+</t>
 </section>
 
@@ -3450 +3440 @@
   <x:anchor-alias value="505 (HTTP Version Not Supported)"/>
 <t>
-   The server does not support, or refuses to support, the protocol
-   version that was used in the request message. The server is
-   indicating that it is unable or unwilling to complete the request
-   using the same major version as the client, as described in &http-version;,
-   other than with this error message. The response &SHOULD; contain
-   a representation describing why that version is not supported and what other
+   The <x:dfn>505 (HTTP Version Not Supported)</x:dfn> status code indicates
+   that the server does not support, or refuses to support, the protocol
+   version that was used in the request message. The server is indicating that
+   it is unable or unwilling to complete the request using the same major
+   version as the client, as described in &http-version;, other than with this
+   error message. The server &SHOULD; generate a representation for the 505
+   response that describes why that version is not supported and what other
    protocols are supported by that server.
 </t>