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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_listen_socket.h"
#if defined(OS_WIN)
// winsock2.h must be included first in order to ensure it is included before
// windows.h.
#include <winsock2.h>
#elif defined(OS_POSIX)
#include <arpa/inet.h>
#include <errno.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include "net/base/net_errors.h"
#endif
#include "base/logging.h"
#include "base/sys_byteorder.h"
#include "base/threading/platform_thread.h"
#include "build/build_config.h"
#include "net/base/net_util.h"
#include "net/base/winsock_init.h"
using std::string;
namespace net {
// static
scoped_refptr<TCPListenSocket> TCPListenSocket::CreateAndListen(
const string& ip, int port, StreamListenSocket::Delegate* del) {
SocketDescriptor s = CreateAndBind(ip, port);
if (s == kInvalidSocket)
return NULL;
scoped_refptr<TCPListenSocket> sock(new TCPListenSocket(s, del));
sock->Listen();
return sock;
}
TCPListenSocket::TCPListenSocket(SocketDescriptor s,
StreamListenSocket::Delegate* del)
: StreamListenSocket(s, del) {
}
TCPListenSocket::~TCPListenSocket() {}
SocketDescriptor TCPListenSocket::CreateAndBind(const string& ip, int port) {
#if defined(OS_WIN)
EnsureWinsockInit();
#endif
SocketDescriptor s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s != kInvalidSocket) {
#if defined(OS_POSIX)
// Allow rapid reuse.
static const int kOn = 1;
setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &kOn, sizeof(kOn));
#endif
sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(ip.c_str());
addr.sin_port = base::HostToNet16(port);
if (bind(s, reinterpret_cast<sockaddr*>(&addr), sizeof(addr))) {
#if defined(OS_WIN)
closesocket(s);
#elif defined(OS_POSIX)
close(s);
#endif
LOG(ERROR) << "Could not bind socket to " << ip << ":" << port;
s = kInvalidSocket;
}
}
return s;
}
SocketDescriptor TCPListenSocket::CreateAndBindAnyPort(const string& ip,
int* port) {
SocketDescriptor s = CreateAndBind(ip, 0);
if (s == kInvalidSocket)
return kInvalidSocket;
sockaddr_in addr;
socklen_t addr_size = sizeof(addr);
bool failed = getsockname(s, reinterpret_cast<struct sockaddr*>(&addr),
&addr_size) != 0;
if (addr_size != sizeof(addr))
failed = true;
if (failed) {
LOG(ERROR) << "Could not determine bound port, getsockname() failed";
#if defined(OS_WIN)
closesocket(s);
#elif defined(OS_POSIX)
close(s);
#endif
return kInvalidSocket;
}
*port = base::NetToHost16(addr.sin_port);
return s;
}
void TCPListenSocket::Accept() {
SocketDescriptor conn = AcceptSocket();
if (conn == kInvalidSocket)
return;
scoped_refptr<TCPListenSocket> sock(
new TCPListenSocket(conn, socket_delegate_));
// It's up to the delegate to AddRef if it wants to keep it around.
#if defined(OS_POSIX)
sock->WatchSocket(WAITING_READ);
#endif
socket_delegate_->DidAccept(this, sock.get());
}
TCPListenSocketFactory::TCPListenSocketFactory(const string& ip, int port)
: ip_(ip),
port_(port) {
}
TCPListenSocketFactory::~TCPListenSocketFactory() {}
scoped_refptr<StreamListenSocket> TCPListenSocketFactory::CreateAndListen(
StreamListenSocket::Delegate* delegate) const {
return TCPListenSocket::CreateAndListen(ip_, port_, delegate);
}
} // namespace net
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