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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 "chrome/browser/extensions/api/socket/udp_socket.h"
#include "chrome/browser/extensions/api/api_resource.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_errors.h"
#include "net/udp/datagram_socket.h"
#include "net/udp/udp_client_socket.h"
namespace extensions {
UDPSocket::UDPSocket(const std::string& owner_extension_id)
: Socket(owner_extension_id),
socket_(net::DatagramSocket::DEFAULT_BIND,
net::RandIntCallback(),
NULL,
net::NetLog::Source()) {
}
UDPSocket::~UDPSocket() {
if (is_connected_) {
Disconnect();
}
}
void UDPSocket::Connect(const std::string& address,
int port,
const CompletionCallback& callback) {
int result = net::ERR_CONNECTION_FAILED;
do {
if (is_connected_)
break;
net::IPEndPoint ip_end_point;
if (!StringAndPortToIPEndPoint(address, port, &ip_end_point)) {
result = net::ERR_ADDRESS_INVALID;
break;
}
result = socket_.Connect(ip_end_point);
is_connected_ = (result == net::OK);
} while (false);
callback.Run(result);
}
int UDPSocket::Bind(const std::string& address, int port) {
net::IPEndPoint ip_end_point;
if (!StringAndPortToIPEndPoint(address, port, &ip_end_point))
return net::ERR_INVALID_ARGUMENT;
return socket_.Bind(ip_end_point);
}
void UDPSocket::Disconnect() {
is_connected_ = false;
socket_.Close();
}
void UDPSocket::Read(int count,
const ReadCompletionCallback& callback) {
DCHECK(!callback.is_null());
if (!read_callback_.is_null()) {
callback.Run(net::ERR_IO_PENDING, NULL);
return;
} else {
read_callback_ = callback;
}
int result = net::ERR_FAILED;
scoped_refptr<net::IOBuffer> io_buffer;
do {
if (count < 0) {
result = net::ERR_INVALID_ARGUMENT;
break;
}
if (!socket_.is_connected()) {
result = net::ERR_SOCKET_NOT_CONNECTED;
break;
}
io_buffer = new net::IOBuffer(count);
result = socket_.Read(io_buffer.get(), count,
base::Bind(&UDPSocket::OnReadComplete, base::Unretained(this),
io_buffer));
} while (false);
if (result != net::ERR_IO_PENDING)
OnReadComplete(io_buffer, result);
}
int UDPSocket::WriteImpl(net::IOBuffer* io_buffer,
int io_buffer_size,
const net::CompletionCallback& callback) {
if (!socket_.is_connected())
return net::ERR_SOCKET_NOT_CONNECTED;
else
return socket_.Write(io_buffer, io_buffer_size, callback);
}
void UDPSocket::RecvFrom(int count,
const RecvFromCompletionCallback& callback) {
DCHECK(!callback.is_null());
if (!recv_from_callback_.is_null()) {
callback.Run(net::ERR_IO_PENDING, NULL, std::string(), 0);
return;
} else {
recv_from_callback_ = callback;
}
int result = net::ERR_FAILED;
scoped_refptr<net::IOBuffer> io_buffer;
scoped_refptr<IPEndPoint> address;
do {
if (count < 0) {
result = net::ERR_INVALID_ARGUMENT;
break;
}
if (!socket_.is_connected()) {
result = net::ERR_SOCKET_NOT_CONNECTED;
break;
}
io_buffer = new net::IOBuffer(count);
address = new IPEndPoint();
result = socket_.RecvFrom(
io_buffer.get(),
count,
&address->data,
base::Bind(&UDPSocket::OnRecvFromComplete,
base::Unretained(this),
io_buffer,
address));
} while (false);
if (result != net::ERR_IO_PENDING)
OnRecvFromComplete(io_buffer, address, result);
}
void UDPSocket::SendTo(scoped_refptr<net::IOBuffer> io_buffer,
int byte_count,
const std::string& address,
int port,
const CompletionCallback& callback) {
DCHECK(!callback.is_null());
if (!send_to_callback_.is_null()) {
// TODO(penghuang): Put requests in a pending queue to support multiple
// sendTo calls.
callback.Run(net::ERR_IO_PENDING);
return;
} else {
send_to_callback_ = callback;
}
int result = net::ERR_FAILED;
do {
net::IPEndPoint ip_end_point;
if (!StringAndPortToIPEndPoint(address, port, &ip_end_point)) {
result = net::ERR_ADDRESS_INVALID;
break;
}
if (!socket_.is_connected()) {
result = net::ERR_SOCKET_NOT_CONNECTED;
break;
}
result = socket_.SendTo(
io_buffer.get(),
byte_count,
ip_end_point,
base::Bind(&UDPSocket::OnSendToComplete, base::Unretained(this)));
} while (false);
if (result != net::ERR_IO_PENDING)
OnSendToComplete(result);
}
bool UDPSocket::GetPeerAddress(net::IPEndPoint* address) {
return !socket_.GetPeerAddress(address);
}
bool UDPSocket::GetLocalAddress(net::IPEndPoint* address) {
return !socket_.GetLocalAddress(address);
}
Socket::SocketType UDPSocket::GetSocketType() const {
return Socket::TYPE_UDP;
}
void UDPSocket::OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer,
int result) {
DCHECK(!read_callback_.is_null());
read_callback_.Run(result, io_buffer);
read_callback_.Reset();
}
void UDPSocket::OnRecvFromComplete(scoped_refptr<net::IOBuffer> io_buffer,
scoped_refptr<IPEndPoint> address,
int result) {
DCHECK(!recv_from_callback_.is_null());
std::string ip;
int port = 0;
if (result > 0 && address.get()) {
IPEndPointToStringAndPort(address->data, &ip, &port);
}
recv_from_callback_.Run(result, io_buffer, ip, port);
recv_from_callback_.Reset();
}
void UDPSocket::OnSendToComplete(int result) {
DCHECK(!send_to_callback_.is_null());
send_to_callback_.Run(result);
send_to_callback_.Reset();
}
} // namespace extensions
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