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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 "net/socket/tcp_server_socket_win.h"
#include <mstcpip.h>
#include "net/base/ip_endpoint.h"
#include "net/base/net_errors.h"
#include "net/base/net_util.h"
#include "net/base/winsock_init.h"
#include "net/base/winsock_util.h"
#include "net/socket/socket_net_log_params.h"
#include "net/socket/tcp_client_socket.h"
namespace net {
TCPServerSocketWin::TCPServerSocketWin(net::NetLog* net_log,
const net::NetLog::Source& source)
: socket_(INVALID_SOCKET),
socket_event_(WSA_INVALID_EVENT),
accept_socket_(NULL),
reuse_address_(false),
net_log_(BoundNetLog::Make(net_log, NetLog::SOURCE_SOCKET)) {
net_log_.BeginEvent(NetLog::TYPE_SOCKET_ALIVE,
source.ToEventParametersCallback());
EnsureWinsockInit();
}
TCPServerSocketWin::~TCPServerSocketWin() {
Close();
net_log_.EndEvent(NetLog::TYPE_SOCKET_ALIVE);
}
void TCPServerSocketWin::AllowAddressReuse() {
DCHECK(CalledOnValidThread());
DCHECK_EQ(socket_, INVALID_SOCKET);
DCHECK_EQ(socket_event_, WSA_INVALID_EVENT);
reuse_address_ = true;
}
int TCPServerSocketWin::Listen(const IPEndPoint& address, int backlog) {
DCHECK(CalledOnValidThread());
DCHECK_GT(backlog, 0);
DCHECK_EQ(socket_, INVALID_SOCKET);
DCHECK_EQ(socket_event_, WSA_INVALID_EVENT);
socket_event_ = WSACreateEvent();
if (socket_event_ == WSA_INVALID_EVENT) {
PLOG(ERROR) << "WSACreateEvent()";
return ERR_FAILED;
}
socket_ = socket(address.GetSockAddrFamily(), SOCK_STREAM, IPPROTO_TCP);
if (socket_ < 0) {
PLOG(ERROR) << "socket() returned an error";
return MapSystemError(WSAGetLastError());
}
if (SetNonBlocking(socket_)) {
int result = MapSystemError(WSAGetLastError());
Close();
return result;
}
int result = SetSocketOptions();
if (result != OK)
return result;
SockaddrStorage storage;
if (!address.ToSockAddr(storage.addr, &storage.addr_len))
return ERR_INVALID_ARGUMENT;
result = bind(socket_, storage.addr, storage.addr_len);
if (result < 0) {
PLOG(ERROR) << "bind() returned an error";
result = MapSystemError(WSAGetLastError());
Close();
return result;
}
result = listen(socket_, backlog);
if (result < 0) {
PLOG(ERROR) << "listen() returned an error";
result = MapSystemError(WSAGetLastError());
Close();
return result;
}
return OK;
}
int TCPServerSocketWin::GetLocalAddress(IPEndPoint* address) const {
DCHECK(CalledOnValidThread());
DCHECK(address);
SockaddrStorage storage;
if (getsockname(socket_, storage.addr, &storage.addr_len))
return MapSystemError(WSAGetLastError());
if (!address->FromSockAddr(storage.addr, storage.addr_len))
return ERR_FAILED;
return OK;
}
int TCPServerSocketWin::Accept(
scoped_ptr<StreamSocket>* socket, const CompletionCallback& callback) {
DCHECK(CalledOnValidThread());
DCHECK(socket);
DCHECK(!callback.is_null());
DCHECK(accept_callback_.is_null());
net_log_.BeginEvent(NetLog::TYPE_TCP_ACCEPT);
int result = AcceptInternal(socket);
if (result == ERR_IO_PENDING) {
// Start watching
WSAEventSelect(socket_, socket_event_, FD_ACCEPT);
accept_watcher_.StartWatching(socket_event_, this);
accept_socket_ = socket;
accept_callback_ = callback;
}
return result;
}
int TCPServerSocketWin::SetSocketOptions() {
BOOL true_value = 1;
if (reuse_address_) {
int rv = setsockopt(socket_, SOL_SOCKET, SO_REUSEADDR,
reinterpret_cast<const char*>(&true_value),
sizeof(true_value));
if (rv < 0)
return MapSystemError(errno);
}
return OK;
}
int TCPServerSocketWin::AcceptInternal(scoped_ptr<StreamSocket>* socket) {
SockaddrStorage storage;
int new_socket = accept(socket_, storage.addr, &storage.addr_len);
if (new_socket < 0) {
int net_error = MapSystemError(WSAGetLastError());
if (net_error != ERR_IO_PENDING)
net_log_.EndEventWithNetErrorCode(NetLog::TYPE_TCP_ACCEPT, net_error);
return net_error;
}
IPEndPoint address;
if (!address.FromSockAddr(storage.addr, storage.addr_len)) {
NOTREACHED();
if (closesocket(new_socket) < 0)
PLOG(ERROR) << "closesocket";
net_log_.EndEventWithNetErrorCode(NetLog::TYPE_TCP_ACCEPT, ERR_FAILED);
return ERR_FAILED;
}
scoped_ptr<TCPClientSocket> tcp_socket(new TCPClientSocket(
AddressList(address),
net_log_.net_log(), net_log_.source()));
int adopt_result = tcp_socket->AdoptSocket(new_socket);
if (adopt_result != OK) {
if (closesocket(new_socket) < 0)
PLOG(ERROR) << "closesocket";
net_log_.EndEventWithNetErrorCode(NetLog::TYPE_TCP_ACCEPT, adopt_result);
return adopt_result;
}
socket->reset(tcp_socket.release());
net_log_.EndEvent(NetLog::TYPE_TCP_ACCEPT,
CreateNetLogIPEndPointCallback(&address));
return OK;
}
void TCPServerSocketWin::Close() {
if (socket_ != INVALID_SOCKET) {
if (closesocket(socket_) < 0)
PLOG(ERROR) << "closesocket";
socket_ = INVALID_SOCKET;
}
if (socket_event_) {
WSACloseEvent(socket_event_);
socket_event_ = WSA_INVALID_EVENT;
}
}
void TCPServerSocketWin::OnObjectSignaled(HANDLE object) {
WSANETWORKEVENTS ev;
if (WSAEnumNetworkEvents(socket_, socket_event_, &ev) == SOCKET_ERROR) {
PLOG(ERROR) << "WSAEnumNetworkEvents()";
return;
}
if (ev.lNetworkEvents & FD_ACCEPT) {
int result = AcceptInternal(accept_socket_);
if (result != ERR_IO_PENDING) {
accept_socket_ = NULL;
CompletionCallback callback = accept_callback_;
accept_callback_.Reset();
callback.Run(result);
}
}
}
} // namespace net
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