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, 12 insertions, 0 deletions

diff --git a/remoting/jingle_glue/ssl_socket_adapter.cc b/remoting/jingle_glue/ssl_socket_adapter.cc
index 101ce3d..59b42f9 100644
--- a/remoting/jingle_glue/ssl_socket_adapter.cc
+++ b/remoting/jingle_glue/ssl_socket_adapter.cc
@@ -270,6 +270,16 @@ bool TransportSocket::UsingTCPFastOpen() const {
   return false;
 }
 
+int64 TransportSocket::NumBytesRead() const {
+  NOTREACHED();
+  return -1;
+}
+
+base::TimeDelta TransportSocket::GetConnectTimeMicros() const {
+  NOTREACHED();
+  return base::TimeDelta::FromMicroseconds(-1);
+}
+
 int TransportSocket::Read(net::IOBuffer* buf, int buf_len,
                           net::CompletionCallback* callback) {
   DCHECK(buf);
diff --git a/remoting/jingle_glue/ssl_socket_adapter.h b/remoting/jingle_glue/ssl_socket_adapter.h
index 9acd3f7..388bd1c 100644
--- a/remoting/jingle_glue/ssl_socket_adapter.h
+++ b/remoting/jingle_glue/ssl_socket_adapter.h
@@ -52,6 +52,8 @@ class TransportSocket : public net::StreamSocket, public sigslot::has_slots<> {
   virtual void SetOmniboxSpeculation();
   virtual bool WasEverUsed() const;
   virtual bool UsingTCPFastOpen() const;
+  virtual int64 NumBytesRead() const;
+  virtual base::TimeDelta GetConnectTimeMicros() const;
 
   // net::Socket implementation