relnote: Close QUIC connections due to too many open streams earlier in

net/tools/quic/quic_server_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/tools/quic/quic_server_session.h"
 
 #include "base/logging.h"
 #include "net/quic/proto/cached_network_parameters.pb.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_flags.h"
@@ skipping 177 matching lines @@
   if (!connection()->connected()) {
     LOG(DFATAL) << "ShouldCreateIncomingDynamicStream called when disconnected";
     return false;
   }
 
   if (id % 2 == 0) {
     DVLOG(1) << "Invalid incoming even stream_id:" << id;
     connection()->SendConnectionClose(QUIC_INVALID_STREAM_ID);
     return false;
   }
-  if (GetNumOpenStreams() >= get_max_open_streams()) {
-    DVLOG(1) << "Failed to create a new incoming stream with id:" << id
-             << " Already " << GetNumOpenStreams() << " streams open (max "
-             << get_max_open_streams() << ").";
-    connection()->SendConnectionClose(QUIC_TOO_MANY_OPEN_STREAMS);
-    return false;
+  if (!FLAGS_exact_stream_id_delta) {
+    if (GetNumOpenStreams() >= get_max_open_streams()) {
+      DVLOG(1) << "Failed to create a new incoming stream with id:" << id
+               << " Already " << GetNumOpenStreams() << " streams open (max "
+               << get_max_open_streams() << ").";
+      connection()->SendConnectionClose(QUIC_TOO_MANY_OPEN_STREAMS);
+      return false;
+    }
   }
   return true;
 }
 
 QuicDataStream* QuicServerSession::CreateIncomingDynamicStream(
     QuicStreamId id) {
   if (!ShouldCreateIncomingDynamicStream(id)) {
     return nullptr;
   }
 
   return new QuicSpdyServerStream(id, this);
 }
 
 QuicDataStream* QuicServerSession::CreateOutgoingDynamicStream() {
   DLOG(ERROR) << "Server push not yet supported";
   return nullptr;
 }
 
 QuicCryptoServerStream* QuicServerSession::GetCryptoStream() {
   return crypto_stream_.get();
 }
 
 }  // namespace tools
 }  // namespace net