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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/strings/string_number_conversions.h"
      9 #include "base/strings/string_split.h"
     10 #include "base/strings/string_util.h"
     11 #include "net/http/http_network_session.h"
     12 #include "net/http/http_network_transaction.h"
     13 #include "net/http/http_server_properties_impl.h"
     14 #include "net/http/http_stream_factory_impl_job.h"
     15 #include "net/spdy/spdy_framer.h"
     16 #include "net/spdy/spdy_session.h"
     17 #include "net/spdy/spdy_session_pool.h"
     18 
     19 namespace net {
     20 
     21 //-----------------------------------------------------------------------------
     22 HttpNetworkLayer::HttpNetworkLayer(HttpNetworkSession* session)
     23     : session_(session),
     24       suspended_(false) {
     25   DCHECK(session_.get());
     26 }
     27 
     28 HttpNetworkLayer::~HttpNetworkLayer() {
     29 }
     30 
     31 //-----------------------------------------------------------------------------
     32 
     33 // static
     34 HttpTransactionFactory* HttpNetworkLayer::CreateFactory(
     35     HttpNetworkSession* session) {
     36   DCHECK(session);
     37 
     38   return new HttpNetworkLayer(session);
     39 }
     40 
     41 // static
     42 void HttpNetworkLayer::ForceAlternateProtocol() {
     43   PortAlternateProtocolPair pair;
     44   pair.port = 443;
     45   pair.protocol = NPN_SPDY_2;
     46   HttpServerPropertiesImpl::ForceAlternateProtocol(pair);
     47 }
     48 
     49 //-----------------------------------------------------------------------------
     50 
     51 int HttpNetworkLayer::CreateTransaction(RequestPriority priority,
     52                                         scoped_ptr<HttpTransaction>* trans,
     53                                         HttpTransactionDelegate* delegate) {
     54   if (suspended_)
     55     return ERR_NETWORK_IO_SUSPENDED;
     56 
     57   trans->reset(new HttpNetworkTransaction(priority, GetSession()));
     58   return OK;
     59 }
     60 
     61 HttpCache* HttpNetworkLayer::GetCache() {
     62   return NULL;
     63 }
     64 
     65 HttpNetworkSession* HttpNetworkLayer::GetSession() { return session_.get(); }
     66 
     67 void HttpNetworkLayer::OnSuspend() {
     68   suspended_ = true;
     69 
     70   if (session_.get())
     71     session_->CloseIdleConnections();
     72 }
     73 
     74 void HttpNetworkLayer::OnResume() {
     75   suspended_ = false;
     76 }
     77 
     78 }  // namespace net
     79