summaryrefslogtreecommitdiffstats
path: root/remoting/protocol/connection_to_client.cc
blob: ee2131a20dbc3d171cdb0f453cea45a719d7ae33 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
// Copyright (c) 2011 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 "google/protobuf/message.h"
#include "net/base/io_buffer.h"
#include "remoting/protocol/client_control_sender.h"
#include "remoting/protocol/host_message_dispatcher.h"
#include "remoting/protocol/host_stub.h"
#include "remoting/protocol/input_stub.h"

// TODO(hclam): Remove this header once MessageDispatcher is used.
#include "remoting/base/compound_buffer.h"

namespace remoting {
namespace protocol {

// Determine how many update streams we should count to find the size of
// average update stream.
static const size_t kAverageUpdateStream = 10;

ConnectionToClient::ConnectionToClient(MessageLoop* message_loop,
                                       EventHandler* handler)
    : loop_(message_loop),
      handler_(handler),
      host_stub_(NULL),
      input_stub_(NULL) {
  DCHECK(loop_);
  DCHECK(handler_);
}

ConnectionToClient::~ConnectionToClient() {
  // TODO(hclam): When we shut down the viewer we may have to close the
  // connection.
}

void ConnectionToClient::Init(protocol::Session* session) {
  DCHECK_EQ(session->message_loop(), MessageLoop::current());

  session_ = session;
  session_->SetStateChangeCallback(
      NewCallback(this, &ConnectionToClient::OnSessionStateChange));
}

protocol::Session* ConnectionToClient::session() {
  return session_;
}

void ConnectionToClient::Disconnect() {
  // This method can be called from main thread so perform threading switching.
  if (MessageLoop::current() != loop_) {
    loop_->PostTask(
        FROM_HERE,
        NewRunnableMethod(this, &ConnectionToClient::Disconnect));
    return;
  }

  // If there is a channel then close it and release the reference.
  if (session_) {
    session_->Close(NewRunnableMethod(this, &ConnectionToClient::OnClosed));
    session_ = NULL;
  }
}

void ConnectionToClient::UpdateSequenceNumber(int64 sequence_number) {
  handler_->OnSequenceNumberUpdated(this, sequence_number);
}

VideoStub* ConnectionToClient::video_stub() {
  return video_writer_.get();
}

// Return pointer to ClientStub.
ClientStub* ConnectionToClient::client_stub() {
  return client_stub_.get();
}

void ConnectionToClient::set_host_stub(protocol::HostStub* host_stub) {
  host_stub_ = host_stub;
}

void ConnectionToClient::set_input_stub(protocol::InputStub* input_stub) {
  input_stub_ = input_stub;
}

void ConnectionToClient::OnSessionStateChange(protocol::Session::State state) {
  if (state == protocol::Session::CONNECTED) {
    client_stub_.reset(new ClientControlSender(session_->control_channel()));
    video_writer_.reset(VideoWriter::Create(session_->config()));
    video_writer_->Init(session_);

    dispatcher_.reset(new HostMessageDispatcher());
    dispatcher_->Initialize(this, host_stub_, input_stub_);
  }

  // This method can be called from main thread so perform threading switching.
  if (MessageLoop::current() != loop_) {
    loop_->PostTask(
        FROM_HERE,
        NewRunnableMethod(this, &ConnectionToClient::StateChangeTask, state));
  } else {
    StateChangeTask(state);
  }
}

void ConnectionToClient::StateChangeTask(protocol::Session::State state) {
  DCHECK_EQ(loop_, MessageLoop::current());

  DCHECK(handler_);
  switch(state) {
    case protocol::Session::CONNECTING:
      break;
    // Don't care about this message.
    case protocol::Session::CONNECTED:
      handler_->OnConnectionOpened(this);
      break;
    case protocol::Session::CLOSED:
      handler_->OnConnectionClosed(this);
      break;
    case protocol::Session::FAILED:
      handler_->OnConnectionFailed(this);
      break;
    default:
      // We shouldn't receive other states.
      NOTREACHED();
  }
}

// OnClosed() is used as a callback for protocol::Session::Close().
void ConnectionToClient::OnClosed() {
}

}  // namespace protocol
}  // namespace remoting