Copy the new PRIORITY frame from HTTP/2.

grmocg · Jun 8, 2013 · e9f216d · e9f216d
1 parent f805506
commit e9f216d
Showing 1 changed file with 28 additions and 0 deletions.
diff --git a/draft-mbelshe-spdy-00.xml b/draft-mbelshe-spdy-00.xml
@@ -982,6 +982,34 @@
 
         </section>
 
+        <section anchor="PRIORITY" title="PRIORITY">
+          <t>
+            The PRIORITY frame (type=0x2) specifies the sender-advised priority of a stream.
+            It can be sent at any time for an existing stream. This enables
+            reprioritisation of existing streams.
+          </t>
+          <figure title="PRIORITY Frame Payload">
+            <artwork type="inline">
+ 0                   1                   2                   3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|X|                   Priority (31)                             |
++-+-------------------------------------------------------------+
+</artwork>
+          </figure>
+          <t>
+            The payload of a PRIORITY frame contains a single reserved bit and a
+            31-bit priority.
+          </t>
+          <t>
+            The PRIORITY frame is associated with an existing stream. If 
+            a PRIORITY frame is received with a stream identifier of 0x0, 
+            the recipient MUST respond with a
+            <xref target="StreamErrorHandler">stream error</xref> of type
+            PROTOCOL_ERROR.
+          </t>
+        </section>
+
         <section anchor="RST_STREAM" title="RST_STREAM">
           <t>
             The RST_STREAM frame (type=0x3) allows for abnormal termination of a stream.  When sent by