Introduce net::HttpServerPropertiesManager to manage server-specific properties.

Currently the only property we manage is whether or not a server supports SPDY, as indicated by NPN. Also introduce a chrome/ implementation of HttpServerPropertiesManager that persists the information to Prefererences.

When we get a SpdySession for a SPDY server, record that that server supports SPDY in HttpServerPropertiesManager. When preconnecting, if we know that the server supports SPDY, only preconnect 1 socket.

R=willchan
BUG=66472
TEST=browser ui and unit tests,network unit tests

Review URL: http://codereview.chromium.org/7827033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@104666 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 17 insertions, 1 deletions

diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index b55d1ac..f496042 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -19,6 +19,7 @@
 #include "net/http/http_proxy_client_socket.h"
 #include "net/http/http_proxy_client_socket_pool.h"
 #include "net/http/http_request_info.h"
+#include "net/http/http_server_properties.h"
 #include "net/http/http_stream_factory_impl_request.h"
 #include "net/socket/client_socket_handle.h"
 #include "net/socket/client_socket_pool.h"
@@ -119,7 +120,17 @@ void HttpStreamFactoryImpl::Job::Start(Request* request) {
 
 int HttpStreamFactoryImpl::Job::Preconnect(int num_streams) {
   DCHECK_GT(num_streams, 0);
-  num_streams_ = num_streams;
+  HostPortPair origin_server =
+      HostPortPair(request_info_.url.HostNoBrackets(),
+                   request_info_.url.EffectiveIntPort());
+  HttpServerProperties* http_server_properties =
+      session_->http_server_properties();
+  if (http_server_properties &&
+      http_server_properties->SupportsSpdy(origin_server)) {
+    num_streams_ = 1;
+  } else {
+    num_streams_ = num_streams;
+  }
   return StartInternal();
 }
 
@@ -821,6 +832,11 @@ int HttpStreamFactoryImpl::Job::DoCreateStream() {
           &new_spdy_session_, using_ssl_);
       if (error != OK)
         return error;
+      const HostPortPair& host_port_pair = pair.first;
+      HttpServerProperties* http_server_properties =
+          session_->http_server_properties();
+      if (http_server_properties)
+        http_server_properties->SetSupportsSpdy(host_port_pair, true);
       spdy_session_direct_ = direct;
       return OK;
     }