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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/protocol/connection_to_client.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/message_loop_proxy.h"
#include "net/base/io_buffer.h"
#include "remoting/protocol/clipboard_stub.h"
#include "remoting/protocol/host_control_dispatcher.h"
#include "remoting/protocol/host_event_dispatcher.h"
#include "remoting/protocol/host_stub.h"
#include "remoting/protocol/input_stub.h"
namespace remoting {
namespace protocol {
ConnectionToClient::ConnectionToClient(protocol::Session* session)
: handler_(NULL),
clipboard_stub_(NULL),
host_stub_(NULL),
input_stub_(NULL),
session_(session) {
session_->SetEventHandler(this);
}
ConnectionToClient::~ConnectionToClient() {
}
void ConnectionToClient::SetEventHandler(EventHandler* event_handler) {
DCHECK(CalledOnValidThread());
handler_ = event_handler;
}
protocol::Session* ConnectionToClient::session() {
DCHECK(CalledOnValidThread());
return session_.get();
}
void ConnectionToClient::Disconnect() {
DCHECK(CalledOnValidThread());
CloseChannels();
// This should trigger OnConnectionClosed() event and this object
// may be destroyed as the result.
session_->Close();
}
void ConnectionToClient::UpdateSequenceNumber(int64 sequence_number) {
DCHECK(CalledOnValidThread());
handler_->OnSequenceNumberUpdated(this, sequence_number);
}
VideoStub* ConnectionToClient::video_stub() {
DCHECK(CalledOnValidThread());
return video_writer_.get();
}
AudioStub* ConnectionToClient::audio_stub() {
DCHECK(CalledOnValidThread());
return audio_writer_.get();
}
// Return pointer to ClientStub.
ClientStub* ConnectionToClient::client_stub() {
DCHECK(CalledOnValidThread());
return control_dispatcher_.get();
}
void ConnectionToClient::set_clipboard_stub(
protocol::ClipboardStub* clipboard_stub) {
DCHECK(CalledOnValidThread());
clipboard_stub_ = clipboard_stub;
}
ClipboardStub* ConnectionToClient::clipboard_stub() {
DCHECK(CalledOnValidThread());
return clipboard_stub_;
}
void ConnectionToClient::set_host_stub(protocol::HostStub* host_stub) {
DCHECK(CalledOnValidThread());
host_stub_ = host_stub;
}
HostStub* ConnectionToClient::host_stub() {
DCHECK(CalledOnValidThread());
return host_stub_;
}
void ConnectionToClient::set_input_stub(protocol::InputStub* input_stub) {
DCHECK(CalledOnValidThread());
input_stub_ = input_stub;
}
InputStub* ConnectionToClient::input_stub() {
DCHECK(CalledOnValidThread());
return input_stub_;
}
void ConnectionToClient::OnSessionStateChange(Session::State state) {
DCHECK(CalledOnValidThread());
DCHECK(handler_);
switch(state) {
case Session::INITIALIZING:
case Session::CONNECTING:
case Session::CONNECTED:
// Don't care about these events.
break;
case Session::AUTHENTICATED:
// Initialize channels.
control_dispatcher_.reset(new HostControlDispatcher());
control_dispatcher_->Init(
session_.get(), session_->config().control_config(),
base::Bind(&ConnectionToClient::OnChannelInitialized,
base::Unretained(this)));
control_dispatcher_->set_clipboard_stub(clipboard_stub_);
control_dispatcher_->set_host_stub(host_stub_);
event_dispatcher_.reset(new HostEventDispatcher());
event_dispatcher_->Init(
session_.get(), session_->config().event_config(),
base::Bind(&ConnectionToClient::OnChannelInitialized,
base::Unretained(this)));
event_dispatcher_->set_input_stub(input_stub_);
event_dispatcher_->set_sequence_number_callback(base::Bind(
&ConnectionToClient::UpdateSequenceNumber, base::Unretained(this)));
video_writer_ = VideoWriter::Create(session_->config());
video_writer_->Init(session_.get(), base::Bind(
&ConnectionToClient::OnChannelInitialized, base::Unretained(this)));
audio_writer_ = AudioWriter::Create(session_->config());
if (audio_writer_.get()) {
audio_writer_->Init(
session_.get(), session_->config().audio_config(),
base::Bind(&ConnectionToClient::OnChannelInitialized,
base::Unretained(this)));
}
// Notify the handler after initializing the channels, so that
// ClientSession can get a client clipboard stub.
handler_->OnConnectionAuthenticated(this);
break;
case Session::CLOSED:
Close(OK);
break;
case Session::FAILED:
Close(session_->error());
break;
}
}
void ConnectionToClient::OnSessionRouteChange(
const std::string& channel_name,
const TransportRoute& route) {
handler_->OnRouteChange(this, channel_name, route);
}
void ConnectionToClient::OnChannelInitialized(bool successful) {
DCHECK(CalledOnValidThread());
if (!successful) {
LOG(ERROR) << "Failed to connect a channel";
Close(CHANNEL_CONNECTION_ERROR);
return;
}
NotifyIfChannelsReady();
}
void ConnectionToClient::NotifyIfChannelsReady() {
DCHECK(CalledOnValidThread());
if (!control_dispatcher_.get() || !control_dispatcher_->is_connected())
return;
if (!event_dispatcher_.get() || !event_dispatcher_->is_connected())
return;
if (!video_writer_.get() || !video_writer_->is_connected())
return;
if ((!audio_writer_.get() || !audio_writer_->is_connected()) &&
session_->config().is_audio_enabled()) {
return;
}
handler_->OnConnectionChannelsConnected(this);
}
void ConnectionToClient::Close(ErrorCode error) {
CloseChannels();
handler_->OnConnectionClosed(this, error);
}
void ConnectionToClient::CloseChannels() {
control_dispatcher_.reset();
event_dispatcher_.reset();
video_writer_.reset();
audio_writer_.reset();
}
} // namespace protocol
} // namespace remoting
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