Basic HTTP pipelining support.

This must be enabled in about:flags. It is naive and assumes all servers correctly implement pipelining. Proxies are not supported.

Immediate future work:
- Integration tests.
- Additional NetLog logging.
- Refactor HttpPipelinedConnectionImpl.

Long term:
- Detect broken transparent proxies.
- Detect and/or mitigate broken servers.
- Buffer HttpPipelinedStream.
- Optimize number of pipelines and their depth.
- Support proxies.

BUG=8991
TEST=net_unittests


Review URL: http://codereview.chromium.org/7289006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106364 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 6 insertions, 2 deletions

diff --git a/net/http/http_stream_factory_impl_job.h b/net/http/http_stream_factory_impl_job.h
index b3d4175..50da574 100644
--- a/net/http/http_stream_factory_impl_job.h
+++ b/net/http/http_stream_factory_impl_job.h
@@ -23,6 +23,7 @@ namespace net {
 class ClientSocketHandle;
 class HttpAuthController;
 class HttpNetworkSession;
+class HttpPipelinedConnection;
 class HttpProxySocketParams;
 class HttpStream;
 class SOCKSSocketParams;
@@ -197,11 +198,11 @@ class HttpStreamFactoryImpl::Job {
   // Should we force SPDY to run without SSL for this stream request.
   bool ShouldForceSpdyWithoutSSL() const;
 
+  bool IsRequestEligibleForPipelining() const;
+
   // Record histograms of latency until Connect() completes.
   static void LogHttpConnectedMetrics(const ClientSocketHandle& handle);
 
-  void HACKCrashHereToDebug80095();
-
   Request* request_;
 
   const HttpRequestInfo request_info_;
@@ -276,6 +277,9 @@ class HttpStreamFactoryImpl::Job {
   // Only used if |new_spdy_session_| is non-NULL.
   bool spdy_session_direct_;
 
+  // True if an existing pipeline can handle this job's request.
+  bool existing_available_pipeline_;
+
   ScopedRunnableMethodFactory<Job> method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Job);