Fix SPDY error-handling if the connection gets closed just after use.

net/spdy/spdy_session.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_SPDY_SPDY_SESSION_H_
 #define NET_SPDY_SPDY_SESSION_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 238 matching lines @@
   // must indicate whether |connection| uses an SSL socket or not; it
   // is usually true, but it can be false for testing or when SPDY is
   // configured to work with non-secure sockets.
   //
   // |pool| is the SpdySessionPool that owns us.  Its lifetime must
   // strictly be greater than |this|.
   //
   // |certificate_error_code| must either be OK or less than
   // ERR_IO_PENDING.
   //
-  // Returns OK on success, or an error on failure. Never returns
-  // ERR_IO_PENDING. If an error is returned, the session must be
-  // destroyed immediately.
-  Error InitializeWithSocket(scoped_ptr<ClientSocketHandle> connection,
-                             SpdySessionPool* pool,
-                             bool is_secure,
-                             int certificate_error_code);
+  // The session begins reading from |connection| on a subsequent event loop
+  // iteration, so the SpdySession may close immediately afterwards if the first
+  // read of |connection| fails.
+  void InitializeWithSocket(scoped_ptr<ClientSocketHandle> connection,
+                            SpdySessionPool* pool,
+                            bool is_secure,
+                            int certificate_error_code);
 
   // Returns the protocol used by this session. Always between
   // kProtoSPDYMinimumVersion and kProtoSPDYMaximumVersion.
   NextProto protocol() const { return protocol_; }
 
   // Check to see if this SPDY session can support an additional domain.
   // If the session is un-authenticated, then this call always returns true.
   // For SSL-based sessions, verifies that the server certificate in use by
   // this session provides authentication for the domain and no client
   // certificate or channel ID was sent to the original server during the SSL
@@ skipping 84 matching lines @@
   // Mark this session as unavailable, meaning that it will not be used to
   // service new streams. Unlike when a GOAWAY frame is received, this function
   // will not close any streams.
   void MakeUnavailable();
 
   // Retrieves information on the current state of the SPDY session as a
   // Value.  Caller takes possession of the returned value.
   base::Value* GetInfoAsValue() const;
 
   // Indicates whether the session is being reused after having successfully
-  // used to send/receive data in the past.
+  // used to send/receive data in the past or if the underlying socket was idle
+  // before being used for a SPDY session.
   bool IsReused() const;
 
   // Returns true if the underlying transport socket ever had any reads or
   // writes.
   bool WasEverUsed() const {
     return connection_->socket()->WasEverUsed();
   }
 
   // Returns the load timing information from the perspective of the given
   // stream.  If it's not the first stream, the connection is considered reused
@@ skipping 229 matching lines @@
   // Calls DoReadLoop and then if |availability_state_| is
   // STATE_CLOSED, calls RemoveFromPool().
   //
   // Use this function instead of DoReadLoop when posting a task to
   // pump the read loop.
   void PumpReadLoop(ReadState expected_read_state, int result);
 
   // Advance the ReadState state machine. |expected_read_state| is the
   // expected starting read state.
   //
-  // This function must always be called via PumpReadLoop() except for
-  // from InitializeWithSocket().
+  // This function must always be called via PumpReadLoop().
   int DoReadLoop(ReadState expected_read_state, int result);
   // The implementations of the states of the ReadState state machine.
   int DoRead();
   int DoReadComplete(int result);
 
   // Calls DoWriteLoop and then if |availability_state_| is
   // STATE_CLOSED, calls RemoveFromPool().
   //
   // Use this function instead of DoWriteLoop when posting a task to
   // pump the write loop.
@@ skipping 488 matching lines @@
   // This SPDY proxy is allowed to push resources from origins that are
   // different from those of their associated streams.
   HostPortPair trusted_spdy_proxy_;
 
   TimeFunc time_func_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_SESSION_H_