remoting/protocol/channel_dispatcher_base.cc

   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 "remoting/protocol/channel_dispatcher_base.h"
   6
   7 #include "base/bind.h"
   8 #include "remoting/protocol/p2p_stream_socket.h"
   9 #include "remoting/protocol/session.h"
  10 #include "remoting/protocol/session_config.h"
  11 #include "remoting/protocol/stream_channel_factory.h"
  12
  13 namespace remoting {
  14 namespace protocol {
  15
  16 ChannelDispatcherBase::ChannelDispatcherBase(const char* channel_name)
  17     : channel_name_(channel_name),
  18       channel_factory_(nullptr),
  19       event_handler_(nullptr) {
  20 }
  21
  22 ChannelDispatcherBase::~ChannelDispatcherBase() {
  23   if (channel_factory_)
  24     channel_factory_->CancelChannelCreation(channel_name_);
  25 }
  26
  27 void ChannelDispatcherBase::Init(Session* session,
  28                                  const ChannelConfig& config,
  29                                  EventHandler* event_handler) {
  30   DCHECK(session);
  31   switch (config.transport) {
  32     case ChannelConfig::TRANSPORT_MUX_STREAM:
  33       channel_factory_ = session->GetMultiplexedChannelFactory();
  34       break;
  35
  36     case ChannelConfig::TRANSPORT_STREAM:
  37       channel_factory_ = session->GetTransportChannelFactory();
  38       break;
  39
  40     default:
  41       LOG(FATAL) << "Unknown transport type: " << config.transport;
  42   }
  43
  44   event_handler_ = event_handler;
  45
  46   channel_factory_->CreateChannel(channel_name_, base::Bind(
  47       &ChannelDispatcherBase::OnChannelReady, base::Unretained(this)));
  48 }
  49
  50 void ChannelDispatcherBase::OnChannelReady(
  51     scoped_ptr<P2PStreamSocket> socket) {
  52   if (!socket.get()) {
  53     event_handler_->OnChannelError(this, CHANNEL_CONNECTION_ERROR);
  54     return;
  55   }
  56
  57   channel_factory_ = nullptr;
  58   channel_ = socket.Pass();
  59   writer_.Init(
  60       base::Bind(&P2PStreamSocket::Write, base::Unretained(channel_.get())),
  61       base::Bind(&ChannelDispatcherBase::OnReadWriteFailed,
  62                  base::Unretained(this)));
  63   reader_.StartReading(channel_.get(),
  64                        base::Bind(&ChannelDispatcherBase::OnReadWriteFailed,
  65                                   base::Unretained(this)));
  66
  67   event_handler_->OnChannelInitialized(this);
  68 }
  69
  70 void ChannelDispatcherBase::OnReadWriteFailed(int error) {
  71   event_handler_->OnChannelError(this, CHANNEL_CONNECTION_ERROR);
  72 }
  73
  74 }  // namespace protocol
  75 }  // namespace remoting