To mitigate the effects of hanging 0-RTT QUIC connections,

net/quic/quic_stream_factory.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_STREAM_FACTORY_H_
 #define NET_QUIC_QUIC_STREAM_FACTORY_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 107 matching lines @@
   // Called by a session when it becomes idle.
   void OnIdleSession(QuicClientSession* session);
 
   // Called by a session when it is going away and no more streams should be
   // created on it.
   void OnSessionGoingAway(QuicClientSession* session);
 
   // Called by a session after it shuts down.
   void OnSessionClosed(QuicClientSession* session);
 
+  // Called by a session whose connection has timed out.
+  void OnSessionConnectTimeout(QuicClientSession* session);
+
   // Cancels a pending request.
   void CancelRequest(QuicStreamRequest* request);
 
   // Closes all current sessions.
   void CloseAllSessions(int error);
 
   base::Value* QuicStreamFactoryInfoToValue() const;
 
   // Delete all cached state objects in |crypto_config_|.
   void ClearCachedStatesInCryptoConfig();
@@ skipping 144 matching lines @@
   uint64 port_seed_;
 
   base::WeakPtrFactory<QuicStreamFactory> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicStreamFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_STREAM_FACTORY_H_