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// Copyright (c) 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 "content/renderer/p2p/socket_dispatcher.h"
#include "base/bind.h"
#include "base/memory/ref_counted.h"
#include "content/child/child_process.h"
#include "content/common/p2p_messages.h"
#include "content/renderer/p2p/host_address_request.h"
#include "content/renderer/p2p/network_list_observer.h"
#include "content/renderer/p2p/socket_client_impl.h"
#include "content/renderer/render_view_impl.h"
#include "ipc/ipc_sender.h"
namespace content {
P2PSocketDispatcher::P2PSocketDispatcher(
base::SingleThreadTaskRunner* ipc_task_runner)
: ipc_task_runner_(ipc_task_runner),
network_notifications_started_(false),
network_list_observers_(
new base::ObserverListThreadSafe<NetworkListObserver>()),
sender_(NULL) {
}
P2PSocketDispatcher::~P2PSocketDispatcher() {
network_list_observers_->AssertEmpty();
for (IDMap<P2PSocketClientImpl>::iterator i(&clients_); !i.IsAtEnd();
i.Advance()) {
i.GetCurrentValue()->Detach();
}
}
void P2PSocketDispatcher::AddNetworkListObserver(
NetworkListObserver* network_list_observer) {
network_list_observers_->AddObserver(network_list_observer);
network_notifications_started_ = true;
SendP2PMessage(new P2PHostMsg_StartNetworkNotifications());
}
void P2PSocketDispatcher::RemoveNetworkListObserver(
NetworkListObserver* network_list_observer) {
network_list_observers_->RemoveObserver(network_list_observer);
}
void P2PSocketDispatcher::Send(IPC::Message* message) {
DCHECK(ipc_task_runner_->BelongsToCurrentThread());
if (!sender_) {
DLOG(WARNING) << "P2PSocketDispatcher::Send() - Sender closed.";
delete message;
return;
}
sender_->Send(message);
}
bool P2PSocketDispatcher::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(P2PSocketDispatcher, message)
IPC_MESSAGE_HANDLER(P2PMsg_NetworkListChanged, OnNetworkListChanged)
IPC_MESSAGE_HANDLER(P2PMsg_GetHostAddressResult, OnGetHostAddressResult)
IPC_MESSAGE_HANDLER(P2PMsg_OnSocketCreated, OnSocketCreated)
IPC_MESSAGE_HANDLER(P2PMsg_OnIncomingTcpConnection, OnIncomingTcpConnection)
IPC_MESSAGE_HANDLER(P2PMsg_OnSendComplete, OnSendComplete)
IPC_MESSAGE_HANDLER(P2PMsg_OnError, OnError)
IPC_MESSAGE_HANDLER(P2PMsg_OnDataReceived, OnDataReceived)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void P2PSocketDispatcher::OnFilterAdded(IPC::Sender* sender) {
DVLOG(1) << "P2PSocketDispatcher::OnFilterAdded()";
sender_ = sender;
}
void P2PSocketDispatcher::OnFilterRemoved() {
sender_ = NULL;
}
void P2PSocketDispatcher::OnChannelConnected(int32 peer_id) {
connected_ = true;
}
void P2PSocketDispatcher::OnChannelClosing() {
sender_ = NULL;
connected_ = false;
}
base::SingleThreadTaskRunner* P2PSocketDispatcher::task_runner() {
return ipc_task_runner_.get();
}
int P2PSocketDispatcher::RegisterClient(P2PSocketClientImpl* client) {
DCHECK(ipc_task_runner_->BelongsToCurrentThread());
return clients_.Add(client);
}
void P2PSocketDispatcher::UnregisterClient(int id) {
DCHECK(ipc_task_runner_->BelongsToCurrentThread());
clients_.Remove(id);
}
void P2PSocketDispatcher::SendP2PMessage(IPC::Message* msg) {
if (!ipc_task_runner_->BelongsToCurrentThread()) {
ipc_task_runner_->PostTask(
FROM_HERE, base::Bind(&P2PSocketDispatcher::Send, this, msg));
return;
}
Send(msg);
}
int P2PSocketDispatcher::RegisterHostAddressRequest(
P2PAsyncAddressResolver* request) {
DCHECK(ipc_task_runner_->BelongsToCurrentThread());
return host_address_requests_.Add(request);
}
void P2PSocketDispatcher::UnregisterHostAddressRequest(int id) {
DCHECK(ipc_task_runner_->BelongsToCurrentThread());
host_address_requests_.Remove(id);
}
void P2PSocketDispatcher::OnNetworkListChanged(
const net::NetworkInterfaceList& networks) {
network_list_observers_->Notify(
FROM_HERE, &NetworkListObserver::OnNetworkListChanged, networks);
}
void P2PSocketDispatcher::OnGetHostAddressResult(
int32 request_id,
const net::IPAddressList& addresses) {
P2PAsyncAddressResolver* request = host_address_requests_.Lookup(request_id);
if (!request) {
DVLOG(1) << "Received P2P message for socket that doesn't exist.";
return;
}
request->OnResponse(addresses);
}
void P2PSocketDispatcher::OnSocketCreated(
int socket_id,
const net::IPEndPoint& local_address,
const net::IPEndPoint& remote_address) {
P2PSocketClientImpl* client = GetClient(socket_id);
if (client) {
client->OnSocketCreated(local_address, remote_address);
}
}
void P2PSocketDispatcher::OnIncomingTcpConnection(
int socket_id, const net::IPEndPoint& address) {
P2PSocketClientImpl* client = GetClient(socket_id);
if (client) {
client->OnIncomingTcpConnection(address);
}
}
void P2PSocketDispatcher::OnSendComplete(
int socket_id,
const P2PSendPacketMetrics& send_metrics) {
P2PSocketClientImpl* client = GetClient(socket_id);
if (client) {
client->OnSendComplete(send_metrics);
}
}
void P2PSocketDispatcher::OnError(int socket_id) {
P2PSocketClientImpl* client = GetClient(socket_id);
if (client) {
client->OnError();
}
}
void P2PSocketDispatcher::OnDataReceived(
int socket_id, const net::IPEndPoint& address,
const std::vector<char>& data,
const base::TimeTicks& timestamp) {
P2PSocketClientImpl* client = GetClient(socket_id);
if (client) {
client->OnDataReceived(address, data, timestamp);
}
}
P2PSocketClientImpl* P2PSocketDispatcher::GetClient(int socket_id) {
P2PSocketClientImpl* client = clients_.Lookup(socket_id);
if (client == NULL) {
// This may happen if the socket was closed, but the browser side
// hasn't processed the close message by the time it sends the
// message to the renderer.
DVLOG(1) << "Received P2P message for socket that doesn't exist.";
return NULL;
}
return client;
}
} // namespace content
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