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

net/quic/quic_session.cc

 // 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.
 
 #include "net/quic/quic_session.h"
 
 #include "base/stl_util.h"
 #include "net/quic/crypto/proof_verifier.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_flags.h"
@@ skipping 661 matching lines @@
          id < stream_id;
          id += 2) {
       available_streams_.insert(id);
     }
     largest_peer_created_stream_id_ = stream_id;
   }
   if (FLAGS_allow_many_available_streams) {
     // Check if the new number of open streams would cause the number of
     // open streams to exceed the limit.
     if (GetNumOpenStreams() >= get_max_open_streams()) {
-      CloseConnection(QUIC_TOO_MANY_OPEN_STREAMS);
+      if (connection()->version() <= QUIC_VERSION_27) {
+        CloseConnection(QUIC_TOO_MANY_OPEN_STREAMS);
+      } else {
+        // Refuse to open the stream.
+        SendRstStream(stream_id, QUIC_REFUSED_STREAM, 0);
+      }
       return nullptr;
     }
   }
   ReliableQuicStream* stream = CreateIncomingDynamicStream(stream_id);
   if (stream == nullptr) {
     return nullptr;
   }
   ActivateStream(stream);
   return stream;
 }
@@ skipping 95 matching lines @@
   }
   for (auto const& kv : dynamic_stream_map_) {
     if (kv.second->flow_controller()->IsBlocked()) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace net