Close idle sockets next time we are about to send data.

net/socket/client_socket_pool_base.cc

Index: net/socket/client_socket_pool_base.cc
diff --git a/net/socket/client_socket_pool_base.cc b/net/socket/client_socket_pool_base.cc
index 231254a5b7d5cb126920812afbeea606bdf7b2be..02f479e985fa5ed4f289c7bba814cdaca5cd0015 100644
--- a/net/socket/client_socket_pool_base.cc
+++ b/net/socket/client_socket_pool_base.cc
@@ -176,12 +176,14 @@ ClientSocketPoolBaseHelper::ClientSocketPoolBaseHelper(
     int max_sockets_per_group,
     base::TimeDelta unused_idle_socket_timeout,
     base::TimeDelta used_idle_socket_timeout,
-    ConnectJobFactory* connect_job_factory)
+    ConnectJobFactory* connect_job_factory,
+    const ClientSocketPoolOptions& options)
     : idle_socket_count_(0),
       connecting_socket_count_(0),
       handed_out_socket_count_(0),
       max_sockets_(max_sockets),
       max_sockets_per_group_(max_sockets_per_group),
+      use_cleanup_timer_(options.use_cleanup_timer),
       unused_idle_socket_timeout_(unused_idle_socket_timeout),
       used_idle_socket_timeout_(used_idle_socket_timeout),
       connect_job_factory_(connect_job_factory),
@@ -237,6 +239,10 @@ int ClientSocketPoolBaseHelper::RequestSocket(
   CHECK(request->callback());
   CHECK(request->handle());
 
+  // Cleanup any timed-out idle sockets if no timer is used.
+  if (!use_cleanup_timer_)
+    CleanupIdleSockets(false);
+
   request->net_log().BeginEvent(NetLog::TYPE_SOCKET_POOL, NULL);
   Group* group = GetOrCreateGroup(group_name);
 
@@ -258,6 +264,10 @@ void ClientSocketPoolBaseHelper::RequestSockets(
   DCHECK(!request.callback());
   DCHECK(!request.handle());
 
+  // Cleanup any timed out idle sockets if no timer is used.
+  if (!use_cleanup_timer_)
+    CleanupIdleSockets(false);
+
   if (num_sockets > max_sockets_per_group_) {
     num_sockets = max_sockets_per_group_;
   }
@@ -696,9 +706,8 @@ void ClientSocketPoolBaseHelper::EnableConnectBackupJobs() {
 }
 
 void ClientSocketPoolBaseHelper::IncrementIdleCount() {
-  if (++idle_socket_count_ == 1)
-    timer_.Start(FROM_HERE, TimeDelta::FromSeconds(kCleanupInterval), this,
-                 &ClientSocketPoolBaseHelper::OnCleanupTimerFired);
+  if (++idle_socket_count_ == 1 && use_cleanup_timer_)
+    StartIdleSocketTimer();
 }
 
 void ClientSocketPoolBaseHelper::DecrementIdleCount() {
@@ -706,6 +715,11 @@ void ClientSocketPoolBaseHelper::DecrementIdleCount() {
     timer_.Stop();
 }
 
+void ClientSocketPoolBaseHelper::StartIdleSocketTimer() {
+  timer_.Start(FROM_HERE, TimeDelta::FromSeconds(kCleanupInterval), this,
+               &ClientSocketPoolBaseHelper::OnCleanupTimerFired);
+}
+
 void ClientSocketPoolBaseHelper::ReleaseSocket(const std::string& group_name,
                                                StreamSocket* socket,
                                                int id) {
@@ -896,8 +910,7 @@ void ClientSocketPoolBaseHelper::ProcessPendingRequest(
       RemoveGroup(group_name);
 
     request->net_log().EndEventWithNetErrorCode(NetLog::TYPE_SOCKET_POOL, rv);
-    InvokeUserCallbackLater(
-        request->handle(), request->callback(), rv);
+    InvokeUserCallbackLater(request->handle(), request->callback(), rv);
   }
 }