Warmth of a connection (cwnd) is estimated by the amount of data written to the socket.

Choosing the warmest connection would mean faster resource load times. 

idle time is the time a socket has remained idle (no http requests being served on it). 
Probability of server resetting a connection increases with idle time duration. 

Using a cost function that takes into account bytes transferred and idle time to pick best connection to schedule http requests on.

CODEREVIEW done in http://codereview.chromium.org/6990036/

Contributed by gagansingh@google.com

Review URL: http://codereview.chromium.org/7189055

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@90373 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 10 insertions, 0 deletions

diff --git a/net/curvecp/curvecp_client_socket.cc b/net/curvecp/curvecp_client_socket.cc
index f28e839..95b36f6 100644
--- a/net/curvecp/curvecp_client_socket.cc
+++ b/net/curvecp/curvecp_client_socket.cc
@@ -88,6 +88,14 @@ bool CurveCPClientSocket::UsingTCPFastOpen() const {
   return false;
 }
 
+int64 CurveCPClientSocket::NumBytesRead() const {
+  return -1;
+}
+
+base::TimeDelta CurveCPClientSocket::GetConnectTimeMicros() const {
+  return base::TimeDelta::FromMicroseconds(-1);
+}
+
 int CurveCPClientSocket::Read(IOBuffer* buf,
                               int buf_len,
                               CompletionCallback* callback) {
diff --git a/net/curvecp/curvecp_client_socket.h b/net/curvecp/curvecp_client_socket.h
index 213b13d..c9faa63 100644
--- a/net/curvecp/curvecp_client_socket.h
+++ b/net/curvecp/curvecp_client_socket.h
@@ -36,6 +36,8 @@ class CurveCPClientSocket : public StreamSocket {
   virtual void SetOmniboxSpeculation();
   virtual bool WasEverUsed() const;
   virtual bool UsingTCPFastOpen() const;
+  virtual int64 NumBytesRead() const;
+  virtual base::TimeDelta GetConnectTimeMicros() const;
 
   // Socket methods:
   virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback* callback);