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| 1 /* | |
| 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include "webrtc/base/win32socketserver.h" | |
| 12 | |
| 13 #include <algorithm> | |
| 14 #include <ws2tcpip.h> // NOLINT | |
| 15 | |
| 16 #include "webrtc/base/byteorder.h" | |
| 17 #include "webrtc/base/checks.h" | |
| 18 #include "webrtc/base/logging.h" | |
| 19 #include "webrtc/base/win32window.h" | |
| 20 | |
| 21 namespace rtc { | |
| 22 | |
| 23 /////////////////////////////////////////////////////////////////////////////// | |
| 24 // Win32Socket | |
| 25 /////////////////////////////////////////////////////////////////////////////// | |
| 26 | |
| 27 // TODO: Move this to a common place where PhysicalSocketServer can | |
| 28 // share it. | |
| 29 // Standard MTUs | |
| 30 static const uint16_t PACKET_MAXIMUMS[] = { | |
| 31 65535, // Theoretical maximum, Hyperchannel | |
| 32 32000, // Nothing | |
| 33 17914, // 16Mb IBM Token Ring | |
| 34 8166, // IEEE 802.4 | |
| 35 // 4464 // IEEE 802.5 (4Mb max) | |
| 36 4352, // FDDI | |
| 37 // 2048, // Wideband Network | |
| 38 2002, // IEEE 802.5 (4Mb recommended) | |
| 39 // 1536, // Expermental Ethernet Networks | |
| 40 // 1500, // Ethernet, Point-to-Point (default) | |
| 41 1492, // IEEE 802.3 | |
| 42 1006, // SLIP, ARPANET | |
| 43 // 576, // X.25 Networks | |
| 44 // 544, // DEC IP Portal | |
| 45 // 512, // NETBIOS | |
| 46 508, // IEEE 802/Source-Rt Bridge, ARCNET | |
| 47 296, // Point-to-Point (low delay) | |
| 48 68, // Official minimum | |
| 49 0, // End of list marker | |
| 50 }; | |
| 51 | |
| 52 static const int IP_HEADER_SIZE = 20u; | |
| 53 static const int ICMP_HEADER_SIZE = 8u; | |
| 54 static const int ICMP_PING_TIMEOUT_MILLIS = 10000u; | |
| 55 | |
| 56 // TODO: Enable for production builds also? Use FormatMessage? | |
| 57 #if !defined(NDEBUG) | |
| 58 LPCSTR WSAErrorToString(int error, LPCSTR *description_result) { | |
| 59 LPCSTR string = "Unspecified"; | |
| 60 LPCSTR description = "Unspecified description"; | |
| 61 switch (error) { | |
| 62 case ERROR_SUCCESS: | |
| 63 string = "SUCCESS"; | |
| 64 description = "Operation succeeded"; | |
| 65 break; | |
| 66 case WSAEWOULDBLOCK: | |
| 67 string = "WSAEWOULDBLOCK"; | |
| 68 description = "Using a non-blocking socket, will notify later"; | |
| 69 break; | |
| 70 case WSAEACCES: | |
| 71 string = "WSAEACCES"; | |
| 72 description = "Access denied, or sharing violation"; | |
| 73 break; | |
| 74 case WSAEADDRNOTAVAIL: | |
| 75 string = "WSAEADDRNOTAVAIL"; | |
| 76 description = "Address is not valid in this context"; | |
| 77 break; | |
| 78 case WSAENETDOWN: | |
| 79 string = "WSAENETDOWN"; | |
| 80 description = "Network is down"; | |
| 81 break; | |
| 82 case WSAENETUNREACH: | |
| 83 string = "WSAENETUNREACH"; | |
| 84 description = "Network is up, but unreachable"; | |
| 85 break; | |
| 86 case WSAENETRESET: | |
| 87 string = "WSANETRESET"; | |
| 88 description = "Connection has been reset due to keep-alive activity"; | |
| 89 break; | |
| 90 case WSAECONNABORTED: | |
| 91 string = "WSAECONNABORTED"; | |
| 92 description = "Aborted by host"; | |
| 93 break; | |
| 94 case WSAECONNRESET: | |
| 95 string = "WSAECONNRESET"; | |
| 96 description = "Connection reset by host"; | |
| 97 break; | |
| 98 case WSAETIMEDOUT: | |
| 99 string = "WSAETIMEDOUT"; | |
| 100 description = "Timed out, host failed to respond"; | |
| 101 break; | |
| 102 case WSAECONNREFUSED: | |
| 103 string = "WSAECONNREFUSED"; | |
| 104 description = "Host actively refused connection"; | |
| 105 break; | |
| 106 case WSAEHOSTDOWN: | |
| 107 string = "WSAEHOSTDOWN"; | |
| 108 description = "Host is down"; | |
| 109 break; | |
| 110 case WSAEHOSTUNREACH: | |
| 111 string = "WSAEHOSTUNREACH"; | |
| 112 description = "Host is unreachable"; | |
| 113 break; | |
| 114 case WSAHOST_NOT_FOUND: | |
| 115 string = "WSAHOST_NOT_FOUND"; | |
| 116 description = "No such host is known"; | |
| 117 break; | |
| 118 } | |
| 119 if (description_result) { | |
| 120 *description_result = description; | |
| 121 } | |
| 122 return string; | |
| 123 } | |
| 124 | |
| 125 void ReportWSAError(LPCSTR context, int error, const SocketAddress& address) { | |
| 126 LPCSTR description_string; | |
| 127 LPCSTR error_string = WSAErrorToString(error, &description_string); | |
| 128 LOG(LS_INFO) << context << " = " << error | |
| 129 << " (" << error_string << ":" << description_string << ") [" | |
| 130 << address.ToString() << "]"; | |
| 131 } | |
| 132 #else | |
| 133 void ReportWSAError(LPCSTR context, int error, const SocketAddress& address) {} | |
| 134 #endif | |
| 135 | |
| 136 ///////////////////////////////////////////////////////////////////////////// | |
| 137 // Win32Socket::EventSink | |
| 138 ///////////////////////////////////////////////////////////////////////////// | |
| 139 | |
| 140 #define WM_SOCKETNOTIFY (WM_USER + 50) | |
| 141 #define WM_DNSNOTIFY (WM_USER + 51) | |
| 142 | |
| 143 struct Win32Socket::DnsLookup { | |
| 144 HANDLE handle; | |
| 145 uint16_t port; | |
| 146 char buffer[MAXGETHOSTSTRUCT]; | |
| 147 }; | |
| 148 | |
| 149 class Win32Socket::EventSink : public Win32Window { | |
| 150 public: | |
| 151 explicit EventSink(Win32Socket * parent) : parent_(parent) { } | |
| 152 | |
| 153 void Dispose(); | |
| 154 | |
| 155 virtual bool OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam, | |
| 156 LRESULT& result); | |
| 157 virtual void OnNcDestroy(); | |
| 158 | |
| 159 private: | |
| 160 bool OnSocketNotify(UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT& result); | |
| 161 bool OnDnsNotify(WPARAM wParam, LPARAM lParam, LRESULT& result); | |
| 162 | |
| 163 Win32Socket * parent_; | |
| 164 }; | |
| 165 | |
| 166 void Win32Socket::EventSink::Dispose() { | |
| 167 parent_ = nullptr; | |
| 168 if (::IsWindow(handle())) { | |
| 169 ::DestroyWindow(handle()); | |
| 170 } else { | |
| 171 delete this; | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 bool Win32Socket::EventSink::OnMessage(UINT uMsg, WPARAM wParam, | |
| 176 LPARAM lParam, LRESULT& result) { | |
| 177 switch (uMsg) { | |
| 178 case WM_SOCKETNOTIFY: | |
| 179 case WM_TIMER: | |
| 180 return OnSocketNotify(uMsg, wParam, lParam, result); | |
| 181 case WM_DNSNOTIFY: | |
| 182 return OnDnsNotify(wParam, lParam, result); | |
| 183 } | |
| 184 return false; | |
| 185 } | |
| 186 | |
| 187 bool Win32Socket::EventSink::OnSocketNotify(UINT uMsg, WPARAM wParam, | |
| 188 LPARAM lParam, LRESULT& result) { | |
| 189 result = 0; | |
| 190 | |
| 191 int wsa_event = WSAGETSELECTEVENT(lParam); | |
| 192 int wsa_error = WSAGETSELECTERROR(lParam); | |
| 193 | |
| 194 // Treat connect timeouts as close notifications | |
| 195 if (uMsg == WM_TIMER) { | |
| 196 wsa_event = FD_CLOSE; | |
| 197 wsa_error = WSAETIMEDOUT; | |
| 198 } | |
| 199 | |
| 200 if (parent_) | |
| 201 parent_->OnSocketNotify(static_cast<SOCKET>(wParam), wsa_event, wsa_error); | |
| 202 return true; | |
| 203 } | |
| 204 | |
| 205 bool Win32Socket::EventSink::OnDnsNotify(WPARAM wParam, LPARAM lParam, | |
| 206 LRESULT& result) { | |
| 207 result = 0; | |
| 208 | |
| 209 int error = WSAGETASYNCERROR(lParam); | |
| 210 if (parent_) | |
| 211 parent_->OnDnsNotify(reinterpret_cast<HANDLE>(wParam), error); | |
| 212 return true; | |
| 213 } | |
| 214 | |
| 215 void Win32Socket::EventSink::OnNcDestroy() { | |
| 216 if (parent_) { | |
| 217 LOG(LS_ERROR) << "EventSink hwnd is being destroyed, but the event sink" | |
| 218 " hasn't yet been disposed."; | |
| 219 } else { | |
| 220 delete this; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 ///////////////////////////////////////////////////////////////////////////// | |
| 225 // Win32Socket | |
| 226 ///////////////////////////////////////////////////////////////////////////// | |
| 227 | |
| 228 Win32Socket::Win32Socket() | |
| 229 : socket_(INVALID_SOCKET), | |
| 230 error_(0), | |
| 231 state_(CS_CLOSED), | |
| 232 connect_time_(0), | |
| 233 closing_(false), | |
| 234 close_error_(0), | |
| 235 sink_(nullptr), | |
| 236 dns_(nullptr) {} | |
| 237 | |
| 238 Win32Socket::~Win32Socket() { | |
| 239 Close(); | |
| 240 } | |
| 241 | |
| 242 bool Win32Socket::CreateT(int family, int type) { | |
| 243 Close(); | |
| 244 int proto = (SOCK_DGRAM == type) ? IPPROTO_UDP : IPPROTO_TCP; | |
| 245 socket_ = ::WSASocket(family, type, proto, nullptr, 0, 0); | |
| 246 if (socket_ == INVALID_SOCKET) { | |
| 247 UpdateLastError(); | |
| 248 return false; | |
| 249 } | |
| 250 if ((SOCK_DGRAM == type) && !SetAsync(FD_READ | FD_WRITE)) { | |
| 251 return false; | |
| 252 } | |
| 253 return true; | |
| 254 } | |
| 255 | |
| 256 int Win32Socket::Attach(SOCKET s) { | |
| 257 RTC_DCHECK(socket_ == INVALID_SOCKET); | |
| 258 if (socket_ != INVALID_SOCKET) | |
| 259 return SOCKET_ERROR; | |
| 260 | |
| 261 RTC_DCHECK(s != INVALID_SOCKET); | |
| 262 if (s == INVALID_SOCKET) | |
| 263 return SOCKET_ERROR; | |
| 264 | |
| 265 socket_ = s; | |
| 266 state_ = CS_CONNECTED; | |
| 267 | |
| 268 if (!SetAsync(FD_READ | FD_WRITE | FD_CLOSE)) | |
| 269 return SOCKET_ERROR; | |
| 270 | |
| 271 return 0; | |
| 272 } | |
| 273 | |
| 274 void Win32Socket::SetTimeout(int ms) { | |
| 275 if (sink_) | |
| 276 ::SetTimer(sink_->handle(), 1, ms, 0); | |
| 277 } | |
| 278 | |
| 279 SocketAddress Win32Socket::GetLocalAddress() const { | |
| 280 sockaddr_storage addr = {0}; | |
| 281 socklen_t addrlen = sizeof(addr); | |
| 282 int result = ::getsockname(socket_, reinterpret_cast<sockaddr*>(&addr), | |
| 283 &addrlen); | |
| 284 SocketAddress address; | |
| 285 if (result >= 0) { | |
| 286 SocketAddressFromSockAddrStorage(addr, &address); | |
| 287 } else { | |
| 288 LOG(LS_WARNING) << "GetLocalAddress: unable to get local addr, socket=" | |
| 289 << socket_; | |
| 290 } | |
| 291 return address; | |
| 292 } | |
| 293 | |
| 294 SocketAddress Win32Socket::GetRemoteAddress() const { | |
| 295 sockaddr_storage addr = {0}; | |
| 296 socklen_t addrlen = sizeof(addr); | |
| 297 int result = ::getpeername(socket_, reinterpret_cast<sockaddr*>(&addr), | |
| 298 &addrlen); | |
| 299 SocketAddress address; | |
| 300 if (result >= 0) { | |
| 301 SocketAddressFromSockAddrStorage(addr, &address); | |
| 302 } else { | |
| 303 LOG(LS_WARNING) << "GetRemoteAddress: unable to get remote addr, socket=" | |
| 304 << socket_; | |
| 305 } | |
| 306 return address; | |
| 307 } | |
| 308 | |
| 309 int Win32Socket::Bind(const SocketAddress& addr) { | |
| 310 RTC_DCHECK(socket_ != INVALID_SOCKET); | |
| 311 if (socket_ == INVALID_SOCKET) | |
| 312 return SOCKET_ERROR; | |
| 313 | |
| 314 sockaddr_storage saddr; | |
| 315 size_t len = addr.ToSockAddrStorage(&saddr); | |
| 316 int err = ::bind(socket_, | |
| 317 reinterpret_cast<sockaddr*>(&saddr), | |
| 318 static_cast<int>(len)); | |
| 319 UpdateLastError(); | |
| 320 return err; | |
| 321 } | |
| 322 | |
| 323 int Win32Socket::Connect(const SocketAddress& addr) { | |
| 324 if (state_ != CS_CLOSED) { | |
| 325 SetError(EALREADY); | |
| 326 return SOCKET_ERROR; | |
| 327 } | |
| 328 | |
| 329 if (!addr.IsUnresolvedIP()) { | |
| 330 return DoConnect(addr); | |
| 331 } | |
| 332 | |
| 333 LOG_F(LS_INFO) << "async dns lookup (" << addr.hostname() << ")"; | |
| 334 DnsLookup * dns = new DnsLookup; | |
| 335 if (!sink_) { | |
| 336 // Explicitly create the sink ourselves here; we can't rely on SetAsync | |
| 337 // because we don't have a socket_ yet. | |
| 338 CreateSink(); | |
| 339 } | |
| 340 // TODO: Replace with IPv6 compatible lookup. | |
| 341 dns->handle = WSAAsyncGetHostByName(sink_->handle(), WM_DNSNOTIFY, | |
| 342 addr.hostname().c_str(), dns->buffer, | |
| 343 sizeof(dns->buffer)); | |
| 344 | |
| 345 if (!dns->handle) { | |
| 346 LOG_F(LS_ERROR) << "WSAAsyncGetHostByName error: " << WSAGetLastError(); | |
| 347 delete dns; | |
| 348 UpdateLastError(); | |
| 349 Close(); | |
| 350 return SOCKET_ERROR; | |
| 351 } | |
| 352 | |
| 353 dns->port = addr.port(); | |
| 354 dns_ = dns; | |
| 355 state_ = CS_CONNECTING; | |
| 356 return 0; | |
| 357 } | |
| 358 | |
| 359 int Win32Socket::DoConnect(const SocketAddress& addr) { | |
| 360 if ((socket_ == INVALID_SOCKET) && !CreateT(addr.family(), SOCK_STREAM)) { | |
| 361 return SOCKET_ERROR; | |
| 362 } | |
| 363 if (!SetAsync(FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE)) { | |
| 364 return SOCKET_ERROR; | |
| 365 } | |
| 366 | |
| 367 sockaddr_storage saddr = {0}; | |
| 368 size_t len = addr.ToSockAddrStorage(&saddr); | |
| 369 connect_time_ = Time(); | |
| 370 int result = connect(socket_, | |
| 371 reinterpret_cast<SOCKADDR*>(&saddr), | |
| 372 static_cast<int>(len)); | |
| 373 if (result != SOCKET_ERROR) { | |
| 374 state_ = CS_CONNECTED; | |
| 375 } else { | |
| 376 int code = WSAGetLastError(); | |
| 377 if (code == WSAEWOULDBLOCK) { | |
| 378 state_ = CS_CONNECTING; | |
| 379 } else { | |
| 380 ReportWSAError("WSAAsync:connect", code, addr); | |
| 381 error_ = code; | |
| 382 Close(); | |
| 383 return SOCKET_ERROR; | |
| 384 } | |
| 385 } | |
| 386 addr_ = addr; | |
| 387 | |
| 388 return 0; | |
| 389 } | |
| 390 | |
| 391 int Win32Socket::GetError() const { | |
| 392 return error_; | |
| 393 } | |
| 394 | |
| 395 void Win32Socket::SetError(int error) { | |
| 396 error_ = error; | |
| 397 } | |
| 398 | |
| 399 Socket::ConnState Win32Socket::GetState() const { | |
| 400 return state_; | |
| 401 } | |
| 402 | |
| 403 int Win32Socket::GetOption(Option opt, int* value) { | |
| 404 int slevel; | |
| 405 int sopt; | |
| 406 if (TranslateOption(opt, &slevel, &sopt) == -1) | |
| 407 return -1; | |
| 408 | |
| 409 char* p = reinterpret_cast<char*>(value); | |
| 410 int optlen = sizeof(value); | |
| 411 return ::getsockopt(socket_, slevel, sopt, p, &optlen); | |
| 412 } | |
| 413 | |
| 414 int Win32Socket::SetOption(Option opt, int value) { | |
| 415 int slevel; | |
| 416 int sopt; | |
| 417 if (TranslateOption(opt, &slevel, &sopt) == -1) | |
| 418 return -1; | |
| 419 | |
| 420 const char* p = reinterpret_cast<const char*>(&value); | |
| 421 return ::setsockopt(socket_, slevel, sopt, p, sizeof(value)); | |
| 422 } | |
| 423 | |
| 424 int Win32Socket::Send(const void* buffer, size_t length) { | |
| 425 int sent = ::send(socket_, | |
| 426 reinterpret_cast<const char*>(buffer), | |
| 427 static_cast<int>(length), | |
| 428 0); | |
| 429 UpdateLastError(); | |
| 430 return sent; | |
| 431 } | |
| 432 | |
| 433 int Win32Socket::SendTo(const void* buffer, size_t length, | |
| 434 const SocketAddress& addr) { | |
| 435 sockaddr_storage saddr; | |
| 436 size_t addr_len = addr.ToSockAddrStorage(&saddr); | |
| 437 int sent = ::sendto(socket_, reinterpret_cast<const char*>(buffer), | |
| 438 static_cast<int>(length), 0, | |
| 439 reinterpret_cast<sockaddr*>(&saddr), | |
| 440 static_cast<int>(addr_len)); | |
| 441 UpdateLastError(); | |
| 442 return sent; | |
| 443 } | |
| 444 | |
| 445 int Win32Socket::Recv(void* buffer, size_t length, int64_t* timestamp) { | |
| 446 if (timestamp) { | |
| 447 *timestamp = -1; | |
| 448 } | |
| 449 int received = ::recv(socket_, static_cast<char*>(buffer), | |
| 450 static_cast<int>(length), 0); | |
| 451 UpdateLastError(); | |
| 452 if (closing_ && received <= static_cast<int>(length)) | |
| 453 PostClosed(); | |
| 454 return received; | |
| 455 } | |
| 456 | |
| 457 int Win32Socket::RecvFrom(void* buffer, | |
| 458 size_t length, | |
| 459 SocketAddress* out_addr, | |
| 460 int64_t* timestamp) { | |
| 461 if (timestamp) { | |
| 462 *timestamp = -1; | |
| 463 } | |
| 464 sockaddr_storage saddr; | |
| 465 socklen_t addr_len = sizeof(saddr); | |
| 466 int received = ::recvfrom(socket_, static_cast<char*>(buffer), | |
| 467 static_cast<int>(length), 0, | |
| 468 reinterpret_cast<sockaddr*>(&saddr), &addr_len); | |
| 469 UpdateLastError(); | |
| 470 if (received != SOCKET_ERROR) | |
| 471 SocketAddressFromSockAddrStorage(saddr, out_addr); | |
| 472 if (closing_ && received <= static_cast<int>(length)) | |
| 473 PostClosed(); | |
| 474 return received; | |
| 475 } | |
| 476 | |
| 477 int Win32Socket::Listen(int backlog) { | |
| 478 int err = ::listen(socket_, backlog); | |
| 479 if (!SetAsync(FD_ACCEPT)) | |
| 480 return SOCKET_ERROR; | |
| 481 | |
| 482 UpdateLastError(); | |
| 483 if (err == 0) | |
| 484 state_ = CS_CONNECTING; | |
| 485 return err; | |
| 486 } | |
| 487 | |
| 488 Win32Socket* Win32Socket::Accept(SocketAddress* out_addr) { | |
| 489 sockaddr_storage saddr; | |
| 490 socklen_t addr_len = sizeof(saddr); | |
| 491 SOCKET s = ::accept(socket_, reinterpret_cast<sockaddr*>(&saddr), &addr_len); | |
| 492 UpdateLastError(); | |
| 493 if (s == INVALID_SOCKET) | |
| 494 return nullptr; | |
| 495 if (out_addr) | |
| 496 SocketAddressFromSockAddrStorage(saddr, out_addr); | |
| 497 Win32Socket* socket = new Win32Socket; | |
| 498 if (0 == socket->Attach(s)) | |
| 499 return socket; | |
| 500 delete socket; | |
| 501 return nullptr; | |
| 502 } | |
| 503 | |
| 504 int Win32Socket::Close() { | |
| 505 int err = 0; | |
| 506 if (socket_ != INVALID_SOCKET) { | |
| 507 err = ::closesocket(socket_); | |
| 508 socket_ = INVALID_SOCKET; | |
| 509 closing_ = false; | |
| 510 close_error_ = 0; | |
| 511 UpdateLastError(); | |
| 512 } | |
| 513 if (dns_) { | |
| 514 WSACancelAsyncRequest(dns_->handle); | |
| 515 delete dns_; | |
| 516 dns_ = nullptr; | |
| 517 } | |
| 518 if (sink_) { | |
| 519 sink_->Dispose(); | |
| 520 sink_ = nullptr; | |
| 521 } | |
| 522 addr_.Clear(); | |
| 523 state_ = CS_CLOSED; | |
| 524 return err; | |
| 525 } | |
| 526 | |
| 527 void Win32Socket::CreateSink() { | |
| 528 RTC_DCHECK(nullptr == sink_); | |
| 529 | |
| 530 // Create window | |
| 531 sink_ = new EventSink(this); | |
| 532 sink_->Create(nullptr, L"EventSink", 0, 0, 0, 0, 10, 10); | |
| 533 } | |
| 534 | |
| 535 bool Win32Socket::SetAsync(int events) { | |
| 536 if (nullptr == sink_) { | |
| 537 CreateSink(); | |
| 538 RTC_DCHECK(nullptr != sink_); | |
| 539 } | |
| 540 | |
| 541 // start the async select | |
| 542 if (WSAAsyncSelect(socket_, sink_->handle(), WM_SOCKETNOTIFY, events) | |
| 543 == SOCKET_ERROR) { | |
| 544 UpdateLastError(); | |
| 545 Close(); | |
| 546 return false; | |
| 547 } | |
| 548 | |
| 549 return true; | |
| 550 } | |
| 551 | |
| 552 bool Win32Socket::HandleClosed(int close_error) { | |
| 553 // WM_CLOSE will be received before all data has been read, so we need to | |
| 554 // hold on to it until the read buffer has been drained. | |
| 555 char ch; | |
| 556 closing_ = true; | |
| 557 close_error_ = close_error; | |
| 558 return (::recv(socket_, &ch, 1, MSG_PEEK) <= 0); | |
| 559 } | |
| 560 | |
| 561 void Win32Socket::PostClosed() { | |
| 562 // If we see that the buffer is indeed drained, then send the close. | |
| 563 closing_ = false; | |
| 564 ::PostMessage(sink_->handle(), WM_SOCKETNOTIFY, | |
| 565 socket_, WSAMAKESELECTREPLY(FD_CLOSE, close_error_)); | |
| 566 } | |
| 567 | |
| 568 void Win32Socket::UpdateLastError() { | |
| 569 error_ = WSAGetLastError(); | |
| 570 } | |
| 571 | |
| 572 int Win32Socket::TranslateOption(Option opt, int* slevel, int* sopt) { | |
| 573 switch (opt) { | |
| 574 case OPT_DONTFRAGMENT: | |
| 575 *slevel = IPPROTO_IP; | |
| 576 *sopt = IP_DONTFRAGMENT; | |
| 577 break; | |
| 578 case OPT_RCVBUF: | |
| 579 *slevel = SOL_SOCKET; | |
| 580 *sopt = SO_RCVBUF; | |
| 581 break; | |
| 582 case OPT_SNDBUF: | |
| 583 *slevel = SOL_SOCKET; | |
| 584 *sopt = SO_SNDBUF; | |
| 585 break; | |
| 586 case OPT_NODELAY: | |
| 587 *slevel = IPPROTO_TCP; | |
| 588 *sopt = TCP_NODELAY; | |
| 589 break; | |
| 590 case OPT_DSCP: | |
| 591 LOG(LS_WARNING) << "Socket::OPT_DSCP not supported."; | |
| 592 return -1; | |
| 593 default: | |
| 594 RTC_NOTREACHED(); | |
| 595 return -1; | |
| 596 } | |
| 597 return 0; | |
| 598 } | |
| 599 | |
| 600 void Win32Socket::OnSocketNotify(SOCKET socket, int event, int error) { | |
| 601 // Ignore events if we're already closed. | |
| 602 if (socket != socket_) | |
| 603 return; | |
| 604 | |
| 605 error_ = error; | |
| 606 switch (event) { | |
| 607 case FD_CONNECT: | |
| 608 if (error != ERROR_SUCCESS) { | |
| 609 ReportWSAError("WSAAsync:connect notify", error, addr_); | |
| 610 #if !defined(NDEBUG) | |
| 611 int64_t duration = TimeSince(connect_time_); | |
| 612 LOG(LS_INFO) << "WSAAsync:connect error (" << duration | |
| 613 << " ms), faking close"; | |
| 614 #endif | |
| 615 state_ = CS_CLOSED; | |
| 616 // If you get an error connecting, close doesn't really do anything | |
| 617 // and it certainly doesn't send back any close notification, but | |
| 618 // we really only maintain a few states, so it is easiest to get | |
| 619 // back into a known state by pretending that a close happened, even | |
| 620 // though the connect event never did occur. | |
| 621 SignalCloseEvent(this, error); | |
| 622 } else { | |
| 623 #if !defined(NDEBUG) | |
| 624 int64_t duration = TimeSince(connect_time_); | |
| 625 LOG(LS_INFO) << "WSAAsync:connect (" << duration << " ms)"; | |
| 626 #endif | |
| 627 state_ = CS_CONNECTED; | |
| 628 SignalConnectEvent(this); | |
| 629 } | |
| 630 break; | |
| 631 | |
| 632 case FD_ACCEPT: | |
| 633 case FD_READ: | |
| 634 if (error != ERROR_SUCCESS) { | |
| 635 ReportWSAError("WSAAsync:read notify", error, addr_); | |
| 636 } else { | |
| 637 SignalReadEvent(this); | |
| 638 } | |
| 639 break; | |
| 640 | |
| 641 case FD_WRITE: | |
| 642 if (error != ERROR_SUCCESS) { | |
| 643 ReportWSAError("WSAAsync:write notify", error, addr_); | |
| 644 } else { | |
| 645 SignalWriteEvent(this); | |
| 646 } | |
| 647 break; | |
| 648 | |
| 649 case FD_CLOSE: | |
| 650 if (HandleClosed(error)) { | |
| 651 ReportWSAError("WSAAsync:close notify", error, addr_); | |
| 652 state_ = CS_CLOSED; | |
| 653 SignalCloseEvent(this, error); | |
| 654 } | |
| 655 break; | |
| 656 } | |
| 657 } | |
| 658 | |
| 659 void Win32Socket::OnDnsNotify(HANDLE task, int error) { | |
| 660 if (!dns_ || dns_->handle != task) | |
| 661 return; | |
| 662 | |
| 663 uint32_t ip = 0; | |
| 664 if (error == 0) { | |
| 665 hostent* pHost = reinterpret_cast<hostent*>(dns_->buffer); | |
| 666 uint32_t net_ip = *reinterpret_cast<uint32_t*>(pHost->h_addr_list[0]); | |
| 667 ip = NetworkToHost32(net_ip); | |
| 668 } | |
| 669 | |
| 670 LOG_F(LS_INFO) << "(" << IPAddress(ip).ToSensitiveString() | |
| 671 << ", " << error << ")"; | |
| 672 | |
| 673 if (error == 0) { | |
| 674 SocketAddress address(ip, dns_->port); | |
| 675 error = DoConnect(address); | |
| 676 } else { | |
| 677 Close(); | |
| 678 } | |
| 679 | |
| 680 if (error) { | |
| 681 error_ = error; | |
| 682 SignalCloseEvent(this, error_); | |
| 683 } else { | |
| 684 delete dns_; | |
| 685 dns_ = nullptr; | |
| 686 } | |
| 687 } | |
| 688 | |
| 689 /////////////////////////////////////////////////////////////////////////////// | |
| 690 // Win32SocketServer | |
| 691 // Provides cricket base services on top of a win32 gui thread | |
| 692 /////////////////////////////////////////////////////////////////////////////// | |
| 693 | |
| 694 static UINT s_wm_wakeup_id = 0; | |
| 695 const TCHAR Win32SocketServer::kWindowName[] = L"libjingle Message Window"; | |
| 696 | |
| 697 Win32SocketServer::Win32SocketServer() | |
| 698 : wnd_(this), | |
| 699 posted_(false), | |
| 700 hdlg_(nullptr) { | |
| 701 if (s_wm_wakeup_id == 0) | |
| 702 s_wm_wakeup_id = RegisterWindowMessage(L"WM_WAKEUP"); | |
| 703 if (!wnd_.Create(nullptr, kWindowName, 0, 0, 0, 0, 0, 0)) { | |
| 704 LOG_GLE(LS_ERROR) << "Failed to create message window."; | |
| 705 } | |
| 706 } | |
| 707 | |
| 708 Win32SocketServer::~Win32SocketServer() { | |
| 709 if (wnd_.handle() != nullptr) { | |
| 710 KillTimer(wnd_.handle(), 1); | |
| 711 wnd_.Destroy(); | |
| 712 } | |
| 713 } | |
| 714 | |
| 715 Socket* Win32SocketServer::CreateSocket(int type) { | |
| 716 return CreateSocket(AF_INET, type); | |
| 717 } | |
| 718 | |
| 719 Socket* Win32SocketServer::CreateSocket(int family, int type) { | |
| 720 return CreateAsyncSocket(family, type); | |
| 721 } | |
| 722 | |
| 723 AsyncSocket* Win32SocketServer::CreateAsyncSocket(int type) { | |
| 724 return CreateAsyncSocket(AF_INET, type); | |
| 725 } | |
| 726 | |
| 727 AsyncSocket* Win32SocketServer::CreateAsyncSocket(int family, int type) { | |
| 728 Win32Socket* socket = new Win32Socket; | |
| 729 if (socket->CreateT(family, type)) { | |
| 730 return socket; | |
| 731 } | |
| 732 delete socket; | |
| 733 return nullptr; | |
| 734 } | |
| 735 | |
| 736 void Win32SocketServer::SetMessageQueue(MessageQueue* queue) { | |
| 737 message_queue_ = queue; | |
| 738 } | |
| 739 | |
| 740 bool Win32SocketServer::Wait(int cms, bool process_io) { | |
| 741 BOOL b; | |
| 742 if (process_io) { | |
| 743 // Spin the Win32 message pump at least once, and as long as requested. | |
| 744 // This is the Thread::ProcessMessages case. | |
| 745 uint32_t start = Time(); | |
| 746 do { | |
| 747 MSG msg; | |
| 748 SetTimer(wnd_.handle(), 0, cms, nullptr); | |
| 749 // Get the next available message. If we have a modeless dialog, give | |
| 750 // give the message to IsDialogMessage, which will return true if it | |
| 751 // was a message for the dialog that it handled internally. | |
| 752 // Otherwise, dispatch as usual via Translate/DispatchMessage. | |
| 753 b = GetMessage(&msg, nullptr, 0, 0); | |
| 754 if (b == -1) { | |
| 755 LOG_GLE(LS_ERROR) << "GetMessage failed."; | |
| 756 return false; | |
| 757 } else if(b) { | |
| 758 if (!hdlg_ || !IsDialogMessage(hdlg_, &msg)) { | |
| 759 TranslateMessage(&msg); | |
| 760 DispatchMessage(&msg); | |
| 761 } | |
| 762 } | |
| 763 KillTimer(wnd_.handle(), 0); | |
| 764 } while (b && TimeSince(start) < cms); | |
| 765 } else if (cms != 0) { | |
| 766 // Sit and wait forever for a WakeUp. This is the Thread::Send case. | |
| 767 RTC_DCHECK(cms == -1); | |
| 768 MSG msg; | |
| 769 b = GetMessage(&msg, nullptr, s_wm_wakeup_id, s_wm_wakeup_id); | |
| 770 { | |
| 771 CritScope scope(&cs_); | |
| 772 posted_ = false; | |
| 773 } | |
| 774 } else { | |
| 775 // No-op (cms == 0 && !process_io). This is the Pump case. | |
| 776 b = TRUE; | |
| 777 } | |
| 778 return (b != FALSE); | |
| 779 } | |
| 780 | |
| 781 void Win32SocketServer::WakeUp() { | |
| 782 if (wnd_.handle()) { | |
| 783 // Set the "message pending" flag, if not already set. | |
| 784 { | |
| 785 CritScope scope(&cs_); | |
| 786 if (posted_) | |
| 787 return; | |
| 788 posted_ = true; | |
| 789 } | |
| 790 | |
| 791 PostMessage(wnd_.handle(), s_wm_wakeup_id, 0, 0); | |
| 792 } | |
| 793 } | |
| 794 | |
| 795 void Win32SocketServer::Pump() { | |
| 796 // Clear the "message pending" flag. | |
| 797 { | |
| 798 CritScope scope(&cs_); | |
| 799 posted_ = false; | |
| 800 } | |
| 801 | |
| 802 // Dispatch all the messages that are currently in our queue. If new messages | |
| 803 // are posted during the dispatch, they will be handled in the next Pump. | |
| 804 // We use max(1, ...) to make sure we try to dispatch at least once, since | |
| 805 // this allow us to process "sent" messages, not included in the size() count. | |
| 806 Message msg; | |
| 807 for (size_t max_messages_to_process = | |
| 808 std::max<size_t>(1, message_queue_->size()); | |
| 809 max_messages_to_process > 0 && message_queue_->Get(&msg, 0, false); | |
| 810 --max_messages_to_process) { | |
| 811 message_queue_->Dispatch(&msg); | |
| 812 } | |
| 813 | |
| 814 // Anything remaining? | |
| 815 int delay = message_queue_->GetDelay(); | |
| 816 if (delay == -1) { | |
| 817 KillTimer(wnd_.handle(), 1); | |
| 818 } else { | |
| 819 SetTimer(wnd_.handle(), 1, delay, nullptr); | |
| 820 } | |
| 821 } | |
| 822 | |
| 823 bool Win32SocketServer::MessageWindow::OnMessage(UINT wm, WPARAM wp, | |
| 824 LPARAM lp, LRESULT& lr) { | |
| 825 bool handled = false; | |
| 826 if (wm == s_wm_wakeup_id || (wm == WM_TIMER && wp == 1)) { | |
| 827 ss_->Pump(); | |
| 828 lr = 0; | |
| 829 handled = true; | |
| 830 } | |
| 831 return handled; | |
| 832 } | |
| 833 | |
| 834 } // namespace rtc | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2877023002:
Move webrtc/{base => rtc_base} (Closed)
