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

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=90373

Reverted: http://codereview.chromium.org/7255002 :(

Have fixed 2 things since:
1. Removed LOG(ERROR) from http_basic_stream.cc that was causing layout tests to fail.
2. Initialized class variables in http_basic_stream.cc that was causing uninitialized memory bugs in valgrind: http://code.google.com/p/chromium/issues/detail?id=87423

Review URL: http://codereview.chromium.org/7251004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@90601 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 16 insertions, 0 deletions

diff --git a/net/socket/socks_client_socket.cc b/net/socket/socks_client_socket.cc
index d885f15..4a45b01 100644
--- a/net/socket/socks_client_socket.cc
+++ b/net/socket/socks_client_socket.cc
@@ -169,6 +169,22 @@ bool SOCKSClientSocket::UsingTCPFastOpen() const {
   return false;
 }
 
+int64 SOCKSClientSocket::NumBytesRead() const {
+  if (transport_.get() && transport_->socket()) {
+    return transport_->socket()->NumBytesRead();
+  }
+  NOTREACHED();
+  return -1;
+}
+
+base::TimeDelta SOCKSClientSocket::GetConnectTimeMicros() const {
+  if (transport_.get() && transport_->socket()) {
+    return transport_->socket()->GetConnectTimeMicros();
+  }
+  NOTREACHED();
+  return base::TimeDelta::FromMicroseconds(-1);
+}
+
 
 // Read is called by the transport layer above to read. This can only be done
 // if the SOCKS handshake is complete.