relnote: Create Quic version 28. The receiver refuses to create a

net/quic/quic_protocol.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <limits>
@@ skipping 327 matching lines @@
 // QuicVersionToString.
 enum QuicVersion {
   // Special case to indicate unknown/unsupported QUIC version.
   QUIC_VERSION_UNSUPPORTED = 0,
 
   QUIC_VERSION_24 = 24,  // SPDY/4 header compression.
   QUIC_VERSION_25 = 25,  // SPDY/4 header keys, and removal of error_details
                          // from QuicRstStreamFrame
   QUIC_VERSION_26 = 26,  // In CHLO, send XLCT tag containing hash of leaf cert
   QUIC_VERSION_27 = 27,  // Sends a nonce in the SHLO.
+  QUIC_VERSION_28 = 28,  // Receiver can refuse to create a requested stream.
 };
 
 // This vector contains QUIC versions which we currently support.
 // This should be ordered such that the highest supported version is the first
 // element, with subsequent elements in descending order (versions can be
 // skipped as necessary).
 //
 // IMPORTANT: if you are adding to this list, follow the instructions at
 // http://sites/quic/adding-and-removing-versions
 static const QuicVersion kSupportedQuicVersions[] = {
-    QUIC_VERSION_27, QUIC_VERSION_26, QUIC_VERSION_25, QUIC_VERSION_24};
+    QUIC_VERSION_28, QUIC_VERSION_27, QUIC_VERSION_26, QUIC_VERSION_25,
+    QUIC_VERSION_24};
 
 typedef std::vector<QuicVersion> QuicVersionVector;
 
 // Returns a vector of QUIC versions in kSupportedQuicVersions.
 NET_EXPORT_PRIVATE QuicVersionVector QuicSupportedVersions();
 
 // QuicTag is written to and read from the wire, but we prefer to use
 // the more readable QuicVersion at other levels.
 // Helper function which translates from a QuicVersion to a QuicTag. Returns 0
 // if QuicVersion is unsupported.
@@ skipping 59 matching lines @@
   // Stream closed due to connection error. No reset frame is sent when this
   // happens.
   QUIC_STREAM_CONNECTION_ERROR,
   // GoAway frame sent. No more stream can be created.
   QUIC_STREAM_PEER_GOING_AWAY,
   // The stream has been cancelled.
   QUIC_STREAM_CANCELLED,
   // Closing stream locally, sending a RST to allow for proper flow control
   // accounting. Sent in response to a RST from the peer.
   QUIC_RST_ACKNOWLEDGEMENT,
+  // Receiver refused to create the stream (because its limit on open streams
+  // has been reached).  The sender should retry the request later (using
+  // another stream).
+  QUIC_REFUSED_STREAM,
 
   // No error. Used as bound while iterating.
   QUIC_STREAM_LAST_ERROR,
 };
 
 // Because receiving an unknown QuicRstStreamErrorCode results in connection
 // teardown, we use this to make sure any errors predating a given version are
 // downgraded to the most appropriate existing error.
 NET_EXPORT_PRIVATE QuicRstStreamErrorCode AdjustErrorForVersion(
     QuicRstStreamErrorCode error_code,
@@ skipping 750 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_