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// 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 "content/renderer/p2p/socket_dispatcher.h"
#include "base/bind.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop_proxy.h"
#include "content/common/p2p_messages.h"
#include "content/renderer/p2p/host_address_request.h"
#include "content/renderer/p2p/socket_client.h"
#include "content/renderer/render_view_impl.h"
namespace content {
class P2PSocketDispatcher::AsyncMessageSender
: public base::RefCountedThreadSafe<AsyncMessageSender> {
public:
explicit AsyncMessageSender(IPC::Message::Sender* message_sender)
: message_loop_(base::MessageLoopProxy::current()),
message_sender_(message_sender) {
}
void Detach() {
DCHECK(message_loop_->BelongsToCurrentThread());
message_sender_ = NULL;
}
void Send(IPC::Message* msg) {
message_loop_->PostTask(FROM_HERE,
base::Bind(&AsyncMessageSender::DoSend, this, msg));
}
private:
void DoSend(IPC::Message* msg) {
DCHECK(message_loop_->BelongsToCurrentThread());
if (message_sender_)
message_sender_->Send(msg);
}
scoped_refptr<base::MessageLoopProxy> message_loop_;
IPC::Message::Sender* message_sender_;
DISALLOW_COPY_AND_ASSIGN(AsyncMessageSender);
};
P2PSocketDispatcher::P2PSocketDispatcher(RenderViewImpl* render_view)
: content::RenderViewObserver(render_view),
message_loop_(base::MessageLoopProxy::current()),
network_notifications_started_(false),
network_list_observers_(
new ObserverListThreadSafe<NetworkListObserver>()),
async_message_sender_(new AsyncMessageSender(this)) {
}
P2PSocketDispatcher::~P2PSocketDispatcher() {
if (network_notifications_started_)
Send(new P2PHostMsg_StopNetworkNotifications(routing_id()));
for (IDMap<P2PSocketClient>::iterator i(&clients_); !i.IsAtEnd();
i.Advance()) {
i.GetCurrentValue()->Detach();
}
async_message_sender_->Detach();
}
void P2PSocketDispatcher::AddNetworkListObserver(
NetworkListObserver* network_list_observer) {
network_list_observers_->AddObserver(network_list_observer);
network_notifications_started_ = true;
async_message_sender_->Send(
new P2PHostMsg_StartNetworkNotifications(routing_id()));
}
void P2PSocketDispatcher::RemoveNetworkListObserver(
NetworkListObserver* network_list_observer) {
network_list_observers_->RemoveObserver(network_list_observer);
}
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_OnError, OnError)
IPC_MESSAGE_HANDLER(P2PMsg_OnDataReceived, OnDataReceived)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
base::MessageLoopProxy* P2PSocketDispatcher::message_loop() {
return message_loop_;
}
int P2PSocketDispatcher::RegisterClient(P2PSocketClient* client) {
return clients_.Add(client);
}
void P2PSocketDispatcher::UnregisterClient(int id) {
clients_.Remove(id);
}
void P2PSocketDispatcher::SendP2PMessage(IPC::Message* msg) {
msg->set_routing_id(routing_id());
Send(msg);
}
int P2PSocketDispatcher::RegisterHostAddressRequest(
P2PHostAddressRequest* request) {
return host_address_requests_.Add(request);
}
void P2PSocketDispatcher::UnregisterHostAddressRequest(int id) {
host_address_requests_.Remove(id);
}
void P2PSocketDispatcher::OnNetworkListChanged(
const net::NetworkInterfaceList& networks) {
network_list_observers_->Notify(&NetworkListObserver::OnNetworkListChanged,
networks);
}
void P2PSocketDispatcher::OnGetHostAddressResult(
int32 request_id,
const net::IPAddressNumber& address) {
P2PHostAddressRequest* request = host_address_requests_.Lookup(request_id);
if (!request) {
VLOG(1) << "Received P2P message for socket that doesn't exist.";
return;
}
request->OnResponse(address);
}
void P2PSocketDispatcher::OnSocketCreated(
int socket_id, const net::IPEndPoint& address) {
P2PSocketClient* client = GetClient(socket_id);
if (client) {
client->OnSocketCreated(address);
}
}
void P2PSocketDispatcher::OnIncomingTcpConnection(
int socket_id, const net::IPEndPoint& address) {
P2PSocketClient* client = GetClient(socket_id);
if (client) {
client->OnIncomingTcpConnection(address);
}
}
void P2PSocketDispatcher::OnError(int socket_id) {
P2PSocketClient* client = GetClient(socket_id);
if (client) {
client->OnError();
}
}
void P2PSocketDispatcher::OnDataReceived(
int socket_id, const net::IPEndPoint& address,
const std::vector<char>& data) {
P2PSocketClient* client = GetClient(socket_id);
if (client) {
client->OnDataReceived(address, data);
}
}
P2PSocketClient* P2PSocketDispatcher::GetClient(int socket_id) {
P2PSocketClient* 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.
VLOG(1) << "Received P2P message for socket that doesn't exist.";
return NULL;
}
return client;
}
} // namespace content
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