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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/socket/tcp_server_socket_win.h" | |
| 6 | |
| 7 #include <mstcpip.h> | |
| 8 | |
| 9 #include "net/base/ip_endpoint.h" | |
| 10 #include "net/base/net_errors.h" | |
| 11 #include "net/base/net_util.h" | |
| 12 #include "net/base/winsock_init.h" | |
| 13 #include "net/base/winsock_util.h" | |
| 14 #include "net/socket/socket_net_log_params.h" | |
| 15 #include "net/socket/tcp_client_socket.h" | |
| 16 | |
| 17 namespace net { | |
| 18 | |
| 19 TCPServerSocketWin::TCPServerSocketWin(net::NetLog* net_log, | |
| 20 const net::NetLog::Source& source) | |
| 21 : socket_(INVALID_SOCKET), | |
| 22 socket_event_(WSA_INVALID_EVENT), | |
| 23 accept_socket_(NULL), | |
| 24 net_log_(BoundNetLog::Make(net_log, NetLog::SOURCE_SOCKET)) { | |
| 25 net_log_.BeginEvent(NetLog::TYPE_SOCKET_ALIVE, | |
| 26 source.ToEventParametersCallback()); | |
| 27 EnsureWinsockInit(); | |
| 28 } | |
| 29 | |
| 30 TCPServerSocketWin::~TCPServerSocketWin() { | |
| 31 Close(); | |
| 32 net_log_.EndEvent(NetLog::TYPE_SOCKET_ALIVE); | |
| 33 } | |
| 34 | |
| 35 int TCPServerSocketWin::Listen(const IPEndPoint& address, int backlog) { | |
| 36 DCHECK(CalledOnValidThread()); | |
| 37 DCHECK_GT(backlog, 0); | |
| 38 DCHECK_EQ(socket_, INVALID_SOCKET); | |
| 39 DCHECK_EQ(socket_event_, WSA_INVALID_EVENT); | |
| 40 | |
| 41 socket_event_ = WSACreateEvent(); | |
| 42 if (socket_event_ == WSA_INVALID_EVENT) { | |
| 43 PLOG(ERROR) << "WSACreateEvent()"; | |
| 44 return ERR_FAILED; | |
| 45 } | |
| 46 | |
| 47 socket_ = socket(address.GetSockAddrFamily(), SOCK_STREAM, IPPROTO_TCP); | |
| 48 if (socket_ == INVALID_SOCKET) { | |
| 49 PLOG(ERROR) << "socket() returned an error"; | |
| 50 return MapSystemError(WSAGetLastError()); | |
| 51 } | |
| 52 | |
| 53 if (SetNonBlocking(socket_)) { | |
| 54 int result = MapSystemError(WSAGetLastError()); | |
| 55 Close(); | |
| 56 return result; | |
| 57 } | |
| 58 | |
| 59 int result = SetSocketOptions(); | |
| 60 if (result != OK) { | |
| 61 Close(); | |
| 62 return result; | |
| 63 } | |
| 64 | |
| 65 SockaddrStorage storage; | |
| 66 if (!address.ToSockAddr(storage.addr, &storage.addr_len)) { | |
| 67 Close(); | |
| 68 return ERR_ADDRESS_INVALID; | |
| 69 } | |
| 70 | |
| 71 result = bind(socket_, storage.addr, storage.addr_len); | |
| 72 if (result < 0) { | |
| 73 PLOG(ERROR) << "bind() returned an error"; | |
| 74 result = MapSystemError(WSAGetLastError()); | |
| 75 Close(); | |
| 76 return result; | |
| 77 } | |
| 78 | |
| 79 result = listen(socket_, backlog); | |
| 80 if (result < 0) { | |
| 81 PLOG(ERROR) << "listen() returned an error"; | |
| 82 result = MapSystemError(WSAGetLastError()); | |
| 83 Close(); | |
| 84 return result; | |
| 85 } | |
| 86 | |
| 87 return OK; | |
| 88 } | |
| 89 | |
| 90 int TCPServerSocketWin::GetLocalAddress(IPEndPoint* address) const { | |
| 91 DCHECK(CalledOnValidThread()); | |
| 92 DCHECK(address); | |
| 93 | |
| 94 SockaddrStorage storage; | |
| 95 if (getsockname(socket_, storage.addr, &storage.addr_len)) | |
| 96 return MapSystemError(WSAGetLastError()); | |
| 97 if (!address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 98 return ERR_FAILED; | |
| 99 | |
| 100 return OK; | |
| 101 } | |
| 102 | |
| 103 int TCPServerSocketWin::Accept( | |
| 104 scoped_ptr<StreamSocket>* socket, const CompletionCallback& callback) { | |
| 105 DCHECK(CalledOnValidThread()); | |
| 106 DCHECK(socket); | |
| 107 DCHECK(!callback.is_null()); | |
| 108 DCHECK(accept_callback_.is_null()); | |
| 109 | |
| 110 net_log_.BeginEvent(NetLog::TYPE_TCP_ACCEPT); | |
| 111 | |
| 112 int result = AcceptInternal(socket); | |
| 113 | |
| 114 if (result == ERR_IO_PENDING) { | |
| 115 // Start watching | |
| 116 WSAEventSelect(socket_, socket_event_, FD_ACCEPT); | |
| 117 accept_watcher_.StartWatching(socket_event_, this); | |
| 118 | |
| 119 accept_socket_ = socket; | |
| 120 accept_callback_ = callback; | |
| 121 } | |
| 122 | |
| 123 return result; | |
| 124 } | |
| 125 | |
| 126 int TCPServerSocketWin::SetSocketOptions() { | |
| 127 // On Windows, a bound end point can be hijacked by another process by | |
| 128 // setting SO_REUSEADDR. Therefore a Windows-only option SO_EXCLUSIVEADDRUSE | |
| 129 // was introduced in Windows NT 4.0 SP4. If the socket that is bound to the | |
| 130 // end point has SO_EXCLUSIVEADDRUSE enabled, it is not possible for another | |
| 131 // socket to forcibly bind to the end point until the end point is unbound. | |
| 132 // It is recommend that all server applications must use SO_EXCLUSIVEADDRUSE. | |
| 133 // MSDN: http://goo.gl/M6fjQ. | |
| 134 // | |
| 135 // Unlike on *nix, on Windows a TCP server socket can always bind to an end | |
| 136 // point in TIME_WAIT state without setting SO_REUSEADDR, therefore it is not | |
| 137 // needed here. | |
| 138 // | |
| 139 // SO_EXCLUSIVEADDRUSE will prevent a TCP client socket from binding to an end | |
| 140 // point in TIME_WAIT status. It does not have this effect for a TCP server | |
| 141 // socket. | |
| 142 | |
| 143 BOOL true_value = 1; | |
| 144 int rv = setsockopt(socket_, SOL_SOCKET, SO_EXCLUSIVEADDRUSE, | |
| 145 reinterpret_cast<const char*>(&true_value), | |
| 146 sizeof(true_value)); | |
| 147 if (rv < 0) | |
| 148 return MapSystemError(errno); | |
| 149 return OK; | |
| 150 } | |
| 151 | |
| 152 int TCPServerSocketWin::AcceptInternal(scoped_ptr<StreamSocket>* socket) { | |
| 153 SockaddrStorage storage; | |
| 154 int new_socket = accept(socket_, storage.addr, &storage.addr_len); | |
| 155 if (new_socket < 0) { | |
| 156 int net_error = MapSystemError(WSAGetLastError()); | |
| 157 if (net_error != ERR_IO_PENDING) | |
| 158 net_log_.EndEventWithNetErrorCode(NetLog::TYPE_TCP_ACCEPT, net_error); | |
| 159 return net_error; | |
| 160 } | |
| 161 | |
| 162 IPEndPoint address; | |
| 163 if (!address.FromSockAddr(storage.addr, storage.addr_len)) { | |
| 164 NOTREACHED(); | |
| 165 if (closesocket(new_socket) < 0) | |
| 166 PLOG(ERROR) << "closesocket"; | |
| 167 net_log_.EndEventWithNetErrorCode(NetLog::TYPE_TCP_ACCEPT, ERR_FAILED); | |
| 168 return ERR_FAILED; | |
| 169 } | |
| 170 scoped_ptr<TCPClientSocket> tcp_socket(new TCPClientSocket( | |
| 171 AddressList(address), | |
| 172 net_log_.net_log(), net_log_.source())); | |
| 173 int adopt_result = tcp_socket->AdoptSocket(new_socket); | |
| 174 if (adopt_result != OK) { | |
| 175 if (closesocket(new_socket) < 0) | |
| 176 PLOG(ERROR) << "closesocket"; | |
| 177 net_log_.EndEventWithNetErrorCode(NetLog::TYPE_TCP_ACCEPT, adopt_result); | |
| 178 return adopt_result; | |
| 179 } | |
| 180 socket->reset(tcp_socket.release()); | |
| 181 net_log_.EndEvent(NetLog::TYPE_TCP_ACCEPT, | |
| 182 CreateNetLogIPEndPointCallback(&address)); | |
| 183 return OK; | |
| 184 } | |
| 185 | |
| 186 void TCPServerSocketWin::Close() { | |
| 187 if (socket_ != INVALID_SOCKET) { | |
| 188 if (closesocket(socket_) < 0) | |
| 189 PLOG(ERROR) << "closesocket"; | |
| 190 socket_ = INVALID_SOCKET; | |
| 191 } | |
| 192 | |
| 193 if (socket_event_) { | |
| 194 WSACloseEvent(socket_event_); | |
| 195 socket_event_ = WSA_INVALID_EVENT; | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 void TCPServerSocketWin::OnObjectSignaled(HANDLE object) { | |
| 200 WSANETWORKEVENTS ev; | |
| 201 if (WSAEnumNetworkEvents(socket_, socket_event_, &ev) == SOCKET_ERROR) { | |
| 202 PLOG(ERROR) << "WSAEnumNetworkEvents()"; | |
| 203 return; | |
| 204 } | |
| 205 | |
| 206 if (ev.lNetworkEvents & FD_ACCEPT) { | |
| 207 int result = AcceptInternal(accept_socket_); | |
| 208 if (result != ERR_IO_PENDING) { | |
| 209 accept_socket_ = NULL; | |
| 210 CompletionCallback callback = accept_callback_; | |
| 211 accept_callback_.Reset(); | |
| 212 callback.Run(result); | |
| 213 } | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 } // namespace net | |
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Chromium Code Reviews
Issue 22861033:
Move server socket functionality from TCPServerSocket into TCPSocket. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src