Deciding best connection to schedule requests on based on cwnd and idle time

net/socket/stream_socket.h

 // Copyright (c) 2011 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_SOCKET_STREAM_SOCKET_H_
 #define NET_SOCKET_STREAM_SOCKET_H_
 #pragma once
 
 #include "net/base/net_log.h"
 #include "net/socket/socket.h"
@@ skipping 61 matching lines @@
 
   // Returns true if the underlying transport socket ever had any reads or
   // writes.  StreamSockets layered on top of transport sockets should forward
   // this call to the transport socket.
   virtual bool WasEverUsed() const = 0;
 
   // Returns true if the underlying transport socket is using TCP FastOpen.
   // TCP FastOpen is an experiment with sending data in the TCP SYN packet.
   virtual bool UsingTCPFastOpen() const = 0;
 
+  // Returns the number of bytes successfully written to this socket.
+  virtual int NumBytesRead() const = 0;

[wtc, 2011/06/06 17:24:05]

The comment says "written" but the function name says "Read".
I guess the comment is wrong?

[Gagan, 2011/06/06 20:27:10]

Done.

+
+  // Returns the RTT of this socket.
+  virtual double GetRTTInMs() const = 0;
+
  protected:
   // The following class is only used to gather statistics about the history of
   // a socket.  It is only instantiated and used in basic sockets, such as
   // TCPClientSocket* instances.  Other classes that are derived from
   // StreamSocket should forward any potential settings to their underlying
   // transport sockets.
   class UseHistory {
    public:
     UseHistory();
     ~UseHistory();
@@ skipping 32 matching lines @@
   // Logs a SOCKET_BYTES_RECEIVED or SOCKET_BYTES_SENT event to the NetLog.
   // Determines whether to log the received bytes or not, based on the current
   // logging level.
   void LogByteTransfer(const BoundNetLog& net_log, NetLog::EventType event_type,
                        int byte_count, char* bytes) const;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_STREAM_SOCKET_H_