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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "net/http/http_network_layer.h"
      6 
      7 #include "base/logging.h"
      8 #include "base/power_monitor/power_monitor.h"
      9 #include "base/strings/string_number_conversions.h"
     10 #include "base/strings/string_split.h"
     11 #include "base/strings/string_util.h"
     12 #include "net/http/http_network_session.h"
     13 #include "net/http/http_network_transaction.h"
     14 #include "net/http/http_server_properties_impl.h"
     15 #include "net/http/http_stream_factory_impl_job.h"
     16 #include "net/spdy/spdy_framer.h"
     17 #include "net/spdy/spdy_session.h"
     18 #include "net/spdy/spdy_session_pool.h"
     19 
     20 namespace net {
     21 
     22 //-----------------------------------------------------------------------------
     23 HttpNetworkLayer::HttpNetworkLayer(HttpNetworkSession* session)
     24     : session_(session),
     25       suspended_(false) {
     26   DCHECK(session_.get());
     27 #if defined(OS_WIN)
     28  base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
     29  if (power_monitor)
     30    power_monitor->AddObserver(this);
     31 #endif
     32 }
     33 
     34 HttpNetworkLayer::~HttpNetworkLayer() {
     35 #if defined(OS_WIN)
     36   base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
     37   if (power_monitor)
     38     power_monitor->RemoveObserver(this);
     39 #endif
     40 }
     41 
     42 //-----------------------------------------------------------------------------
     43 
     44 // static
     45 HttpTransactionFactory* HttpNetworkLayer::CreateFactory(
     46     HttpNetworkSession* session) {
     47   DCHECK(session);
     48 
     49   return new HttpNetworkLayer(session);
     50 }
     51 
     52 // static
     53 void HttpNetworkLayer::ForceAlternateProtocol() {
     54   AlternateProtocolInfo pair(443, NPN_SPDY_3, 1);
     55   HttpServerPropertiesImpl::ForceAlternateProtocol(pair);
     56 }
     57 
     58 //-----------------------------------------------------------------------------
     59 
     60 int HttpNetworkLayer::CreateTransaction(RequestPriority priority,
     61                                         scoped_ptr<HttpTransaction>* trans) {
     62   if (suspended_)
     63     return ERR_NETWORK_IO_SUSPENDED;
     64 
     65   trans->reset(new HttpNetworkTransaction(priority, GetSession()));
     66   return OK;
     67 }
     68 
     69 HttpCache* HttpNetworkLayer::GetCache() {
     70   return NULL;
     71 }
     72 
     73 HttpNetworkSession* HttpNetworkLayer::GetSession() { return session_.get(); }
     74 
     75 void HttpNetworkLayer::OnSuspend() {
     76   suspended_ = true;
     77 
     78   if (session_.get())
     79     session_->CloseIdleConnections();
     80 }
     81 
     82 void HttpNetworkLayer::OnResume() {
     83   suspended_ = false;
     84 }
     85 
     86 }  // namespace net
     87