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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/udp/udp_socket_libevent.h" | |
| 6 | |
| 7 #include <errno.h> | |
| 8 #include <fcntl.h> | |
| 9 #include <netdb.h> | |
| 10 #include <net/if.h> | |
| 11 #include <netinet/in.h> | |
| 12 #include <sys/ioctl.h> | |
| 13 #include <sys/socket.h> | |
| 14 | |
| 15 #include "base/callback.h" | |
| 16 #include "base/logging.h" | |
| 17 #include "base/message_loop/message_loop.h" | |
| 18 #include "base/metrics/sparse_histogram.h" | |
| 19 #include "base/posix/eintr_wrapper.h" | |
| 20 #include "base/rand_util.h" | |
| 21 #include "net/base/io_buffer.h" | |
| 22 #include "net/base/ip_endpoint.h" | |
| 23 #include "net/base/net_errors.h" | |
| 24 #include "net/base/net_log.h" | |
| 25 #include "net/base/net_util.h" | |
| 26 #include "net/base/network_activity_monitor.h" | |
| 27 #include "net/socket/socket_descriptor.h" | |
| 28 #include "net/udp/udp_net_log_parameters.h" | |
| 29 | |
| 30 | |
| 31 namespace net { | |
| 32 | |
| 33 namespace { | |
| 34 | |
| 35 const int kBindRetries = 10; | |
| 36 const int kPortStart = 1024; | |
| 37 const int kPortEnd = 65535; | |
| 38 | |
| 39 #if defined(OS_MACOSX) | |
| 40 | |
| 41 // Returns IPv4 address in network order. | |
| 42 int GetIPv4AddressFromIndex(int socket, uint32 index, uint32* address){ | |
| 43 if (!index) { | |
| 44 *address = htonl(INADDR_ANY); | |
| 45 return OK; | |
| 46 } | |
| 47 ifreq ifr; | |
| 48 ifr.ifr_addr.sa_family = AF_INET; | |
| 49 if (!if_indextoname(index, ifr.ifr_name)) | |
| 50 return MapSystemError(errno); | |
| 51 int rv = ioctl(socket, SIOCGIFADDR, &ifr); | |
| 52 if (rv == -1) | |
| 53 return MapSystemError(errno); | |
| 54 *address = reinterpret_cast<sockaddr_in*>(&ifr.ifr_addr)->sin_addr.s_addr; | |
| 55 return OK; | |
| 56 } | |
| 57 | |
| 58 #endif // OS_MACOSX | |
| 59 | |
| 60 } // namespace | |
| 61 | |
| 62 UDPSocketLibevent::UDPSocketLibevent( | |
| 63 DatagramSocket::BindType bind_type, | |
| 64 const RandIntCallback& rand_int_cb, | |
| 65 net::NetLog* net_log, | |
| 66 const net::NetLog::Source& source) | |
| 67 : socket_(kInvalidSocket), | |
| 68 addr_family_(0), | |
| 69 is_connected_(false), | |
| 70 socket_options_(SOCKET_OPTION_MULTICAST_LOOP), | |
| 71 multicast_interface_(0), | |
| 72 multicast_time_to_live_(1), | |
| 73 bind_type_(bind_type), | |
| 74 rand_int_cb_(rand_int_cb), | |
| 75 read_watcher_(this), | |
| 76 write_watcher_(this), | |
| 77 read_buf_len_(0), | |
| 78 recv_from_address_(NULL), | |
| 79 write_buf_len_(0), | |
| 80 net_log_(BoundNetLog::Make(net_log, NetLog::SOURCE_UDP_SOCKET)) { | |
| 81 net_log_.BeginEvent(NetLog::TYPE_SOCKET_ALIVE, | |
| 82 source.ToEventParametersCallback()); | |
| 83 if (bind_type == DatagramSocket::RANDOM_BIND) | |
| 84 DCHECK(!rand_int_cb.is_null()); | |
| 85 } | |
| 86 | |
| 87 UDPSocketLibevent::~UDPSocketLibevent() { | |
| 88 Close(); | |
| 89 net_log_.EndEvent(NetLog::TYPE_SOCKET_ALIVE); | |
| 90 } | |
| 91 | |
| 92 int UDPSocketLibevent::Open(AddressFamily address_family) { | |
| 93 DCHECK(CalledOnValidThread()); | |
| 94 DCHECK_EQ(socket_, kInvalidSocket); | |
| 95 | |
| 96 addr_family_ = ConvertAddressFamily(address_family); | |
| 97 socket_ = CreatePlatformSocket(addr_family_, SOCK_DGRAM, 0); | |
| 98 if (socket_ == kInvalidSocket) | |
| 99 return MapSystemError(errno); | |
| 100 if (SetNonBlocking(socket_)) { | |
| 101 const int err = MapSystemError(errno); | |
| 102 Close(); | |
| 103 return err; | |
| 104 } | |
| 105 return OK; | |
| 106 } | |
| 107 | |
| 108 void UDPSocketLibevent::Close() { | |
| 109 DCHECK(CalledOnValidThread()); | |
| 110 | |
| 111 if (socket_ == kInvalidSocket) | |
| 112 return; | |
| 113 | |
| 114 // Zero out any pending read/write callback state. | |
| 115 read_buf_ = NULL; | |
| 116 read_buf_len_ = 0; | |
| 117 read_callback_.Reset(); | |
| 118 recv_from_address_ = NULL; | |
| 119 write_buf_ = NULL; | |
| 120 write_buf_len_ = 0; | |
| 121 write_callback_.Reset(); | |
| 122 send_to_address_.reset(); | |
| 123 | |
| 124 bool ok = read_socket_watcher_.StopWatchingFileDescriptor(); | |
| 125 DCHECK(ok); | |
| 126 ok = write_socket_watcher_.StopWatchingFileDescriptor(); | |
| 127 DCHECK(ok); | |
| 128 | |
| 129 PCHECK(0 == IGNORE_EINTR(close(socket_))); | |
| 130 | |
| 131 socket_ = kInvalidSocket; | |
| 132 addr_family_ = 0; | |
| 133 is_connected_ = false; | |
| 134 } | |
| 135 | |
| 136 int UDPSocketLibevent::GetPeerAddress(IPEndPoint* address) const { | |
| 137 DCHECK(CalledOnValidThread()); | |
| 138 DCHECK(address); | |
| 139 if (!is_connected()) | |
| 140 return ERR_SOCKET_NOT_CONNECTED; | |
| 141 | |
| 142 if (!remote_address_.get()) { | |
| 143 SockaddrStorage storage; | |
| 144 if (getpeername(socket_, storage.addr, &storage.addr_len)) | |
| 145 return MapSystemError(errno); | |
| 146 scoped_ptr<IPEndPoint> address(new IPEndPoint()); | |
| 147 if (!address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 148 return ERR_ADDRESS_INVALID; | |
| 149 remote_address_.reset(address.release()); | |
| 150 } | |
| 151 | |
| 152 *address = *remote_address_; | |
| 153 return OK; | |
| 154 } | |
| 155 | |
| 156 int UDPSocketLibevent::GetLocalAddress(IPEndPoint* address) const { | |
| 157 DCHECK(CalledOnValidThread()); | |
| 158 DCHECK(address); | |
| 159 if (!is_connected()) | |
| 160 return ERR_SOCKET_NOT_CONNECTED; | |
| 161 | |
| 162 if (!local_address_.get()) { | |
| 163 SockaddrStorage storage; | |
| 164 if (getsockname(socket_, storage.addr, &storage.addr_len)) | |
| 165 return MapSystemError(errno); | |
| 166 scoped_ptr<IPEndPoint> address(new IPEndPoint()); | |
| 167 if (!address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 168 return ERR_ADDRESS_INVALID; | |
| 169 local_address_.reset(address.release()); | |
| 170 net_log_.AddEvent(NetLog::TYPE_UDP_LOCAL_ADDRESS, | |
| 171 CreateNetLogUDPConnectCallback(local_address_.get())); | |
| 172 } | |
| 173 | |
| 174 *address = *local_address_; | |
| 175 return OK; | |
| 176 } | |
| 177 | |
| 178 int UDPSocketLibevent::Read(IOBuffer* buf, | |
| 179 int buf_len, | |
| 180 const CompletionCallback& callback) { | |
| 181 return RecvFrom(buf, buf_len, NULL, callback); | |
| 182 } | |
| 183 | |
| 184 int UDPSocketLibevent::RecvFrom(IOBuffer* buf, | |
| 185 int buf_len, | |
| 186 IPEndPoint* address, | |
| 187 const CompletionCallback& callback) { | |
| 188 DCHECK(CalledOnValidThread()); | |
| 189 DCHECK_NE(kInvalidSocket, socket_); | |
| 190 CHECK(read_callback_.is_null()); | |
| 191 DCHECK(!recv_from_address_); | |
| 192 DCHECK(!callback.is_null()); // Synchronous operation not supported | |
| 193 DCHECK_GT(buf_len, 0); | |
| 194 | |
| 195 int nread = InternalRecvFrom(buf, buf_len, address); | |
| 196 if (nread != ERR_IO_PENDING) | |
| 197 return nread; | |
| 198 | |
| 199 if (!base::MessageLoopForIO::current()->WatchFileDescriptor( | |
| 200 socket_, true, base::MessageLoopForIO::WATCH_READ, | |
| 201 &read_socket_watcher_, &read_watcher_)) { | |
| 202 PLOG(ERROR) << "WatchFileDescriptor failed on read"; | |
| 203 int result = MapSystemError(errno); | |
| 204 LogRead(result, NULL, 0, NULL); | |
| 205 return result; | |
| 206 } | |
| 207 | |
| 208 read_buf_ = buf; | |
| 209 read_buf_len_ = buf_len; | |
| 210 recv_from_address_ = address; | |
| 211 read_callback_ = callback; | |
| 212 return ERR_IO_PENDING; | |
| 213 } | |
| 214 | |
| 215 int UDPSocketLibevent::Write(IOBuffer* buf, | |
| 216 int buf_len, | |
| 217 const CompletionCallback& callback) { | |
| 218 return SendToOrWrite(buf, buf_len, NULL, callback); | |
| 219 } | |
| 220 | |
| 221 int UDPSocketLibevent::SendTo(IOBuffer* buf, | |
| 222 int buf_len, | |
| 223 const IPEndPoint& address, | |
| 224 const CompletionCallback& callback) { | |
| 225 return SendToOrWrite(buf, buf_len, &address, callback); | |
| 226 } | |
| 227 | |
| 228 int UDPSocketLibevent::SendToOrWrite(IOBuffer* buf, | |
| 229 int buf_len, | |
| 230 const IPEndPoint* address, | |
| 231 const CompletionCallback& callback) { | |
| 232 DCHECK(CalledOnValidThread()); | |
| 233 DCHECK_NE(kInvalidSocket, socket_); | |
| 234 CHECK(write_callback_.is_null()); | |
| 235 DCHECK(!callback.is_null()); // Synchronous operation not supported | |
| 236 DCHECK_GT(buf_len, 0); | |
| 237 | |
| 238 int result = InternalSendTo(buf, buf_len, address); | |
| 239 if (result != ERR_IO_PENDING) | |
| 240 return result; | |
| 241 | |
| 242 if (!base::MessageLoopForIO::current()->WatchFileDescriptor( | |
| 243 socket_, true, base::MessageLoopForIO::WATCH_WRITE, | |
| 244 &write_socket_watcher_, &write_watcher_)) { | |
| 245 DVLOG(1) << "WatchFileDescriptor failed on write, errno " << errno; | |
| 246 int result = MapSystemError(errno); | |
| 247 LogWrite(result, NULL, NULL); | |
| 248 return result; | |
| 249 } | |
| 250 | |
| 251 write_buf_ = buf; | |
| 252 write_buf_len_ = buf_len; | |
| 253 DCHECK(!send_to_address_.get()); | |
| 254 if (address) { | |
| 255 send_to_address_.reset(new IPEndPoint(*address)); | |
| 256 } | |
| 257 write_callback_ = callback; | |
| 258 return ERR_IO_PENDING; | |
| 259 } | |
| 260 | |
| 261 int UDPSocketLibevent::Connect(const IPEndPoint& address) { | |
| 262 DCHECK_NE(socket_, kInvalidSocket); | |
| 263 net_log_.BeginEvent(NetLog::TYPE_UDP_CONNECT, | |
| 264 CreateNetLogUDPConnectCallback(&address)); | |
| 265 int rv = InternalConnect(address); | |
| 266 net_log_.EndEventWithNetErrorCode(NetLog::TYPE_UDP_CONNECT, rv); | |
| 267 is_connected_ = (rv == OK); | |
| 268 return rv; | |
| 269 } | |
| 270 | |
| 271 int UDPSocketLibevent::InternalConnect(const IPEndPoint& address) { | |
| 272 DCHECK(CalledOnValidThread()); | |
| 273 DCHECK(!is_connected()); | |
| 274 DCHECK(!remote_address_.get()); | |
| 275 | |
| 276 int rv = 0; | |
| 277 if (bind_type_ == DatagramSocket::RANDOM_BIND) { | |
| 278 // Construct IPAddressNumber of appropriate size (IPv4 or IPv6) of 0s, | |
| 279 // representing INADDR_ANY or in6addr_any. | |
| 280 size_t addr_size = address.GetSockAddrFamily() == AF_INET ? | |
| 281 kIPv4AddressSize : kIPv6AddressSize; | |
| 282 IPAddressNumber addr_any(addr_size); | |
| 283 rv = RandomBind(addr_any); | |
| 284 } | |
| 285 // else connect() does the DatagramSocket::DEFAULT_BIND | |
| 286 | |
| 287 if (rv < 0) { | |
| 288 UMA_HISTOGRAM_SPARSE_SLOWLY("Net.UdpSocketRandomBindErrorCode", -rv); | |
| 289 return rv; | |
| 290 } | |
| 291 | |
| 292 SockaddrStorage storage; | |
| 293 if (!address.ToSockAddr(storage.addr, &storage.addr_len)) | |
| 294 return ERR_ADDRESS_INVALID; | |
| 295 | |
| 296 rv = HANDLE_EINTR(connect(socket_, storage.addr, storage.addr_len)); | |
| 297 if (rv < 0) | |
| 298 return MapSystemError(errno); | |
| 299 | |
| 300 remote_address_.reset(new IPEndPoint(address)); | |
| 301 return rv; | |
| 302 } | |
| 303 | |
| 304 int UDPSocketLibevent::Bind(const IPEndPoint& address) { | |
| 305 DCHECK_NE(socket_, kInvalidSocket); | |
| 306 DCHECK(CalledOnValidThread()); | |
| 307 DCHECK(!is_connected()); | |
| 308 | |
| 309 int rv = SetMulticastOptions(); | |
| 310 if (rv < 0) | |
| 311 return rv; | |
| 312 | |
| 313 rv = DoBind(address); | |
| 314 if (rv < 0) | |
| 315 return rv; | |
| 316 | |
| 317 is_connected_ = true; | |
| 318 local_address_.reset(); | |
| 319 return rv; | |
| 320 } | |
| 321 | |
| 322 int UDPSocketLibevent::SetReceiveBufferSize(int32 size) { | |
| 323 DCHECK_NE(socket_, kInvalidSocket); | |
| 324 DCHECK(CalledOnValidThread()); | |
| 325 int rv = setsockopt(socket_, SOL_SOCKET, SO_RCVBUF, | |
| 326 reinterpret_cast<const char*>(&size), sizeof(size)); | |
| 327 return rv == 0 ? OK : MapSystemError(errno); | |
| 328 } | |
| 329 | |
| 330 int UDPSocketLibevent::SetSendBufferSize(int32 size) { | |
| 331 DCHECK_NE(socket_, kInvalidSocket); | |
| 332 DCHECK(CalledOnValidThread()); | |
| 333 int rv = setsockopt(socket_, SOL_SOCKET, SO_SNDBUF, | |
| 334 reinterpret_cast<const char*>(&size), sizeof(size)); | |
| 335 return rv == 0 ? OK : MapSystemError(errno); | |
| 336 } | |
| 337 | |
| 338 int UDPSocketLibevent::AllowAddressReuse() { | |
| 339 DCHECK_NE(socket_, kInvalidSocket); | |
| 340 DCHECK(CalledOnValidThread()); | |
| 341 DCHECK(!is_connected()); | |
| 342 int true_value = 1; | |
| 343 int rv = setsockopt( | |
| 344 socket_, SOL_SOCKET, SO_REUSEADDR, &true_value, sizeof(true_value)); | |
| 345 return rv == 0 ? OK : MapSystemError(errno); | |
| 346 } | |
| 347 | |
| 348 int UDPSocketLibevent::SetBroadcast(bool broadcast) { | |
| 349 DCHECK_NE(socket_, kInvalidSocket); | |
| 350 DCHECK(CalledOnValidThread()); | |
| 351 int value = broadcast ? 1 : 0; | |
| 352 int rv; | |
| 353 #if defined(OS_MACOSX) | |
| 354 // SO_REUSEPORT on OSX permits multiple processes to each receive | |
| 355 // UDP multicast or broadcast datagrams destined for the bound | |
| 356 // port. | |
| 357 rv = setsockopt(socket_, SOL_SOCKET, SO_REUSEPORT, &value, sizeof(value)); | |
| 358 #else | |
| 359 rv = setsockopt(socket_, SOL_SOCKET, SO_BROADCAST, &value, sizeof(value)); | |
| 360 #endif // defined(OS_MACOSX) | |
| 361 return rv == 0 ? OK : MapSystemError(errno); | |
| 362 } | |
| 363 | |
| 364 void UDPSocketLibevent::ReadWatcher::OnFileCanReadWithoutBlocking(int) { | |
| 365 if (!socket_->read_callback_.is_null()) | |
| 366 socket_->DidCompleteRead(); | |
| 367 } | |
| 368 | |
| 369 void UDPSocketLibevent::WriteWatcher::OnFileCanWriteWithoutBlocking(int) { | |
| 370 if (!socket_->write_callback_.is_null()) | |
| 371 socket_->DidCompleteWrite(); | |
| 372 } | |
| 373 | |
| 374 void UDPSocketLibevent::DoReadCallback(int rv) { | |
| 375 DCHECK_NE(rv, ERR_IO_PENDING); | |
| 376 DCHECK(!read_callback_.is_null()); | |
| 377 | |
| 378 // since Run may result in Read being called, clear read_callback_ up front. | |
| 379 CompletionCallback c = read_callback_; | |
| 380 read_callback_.Reset(); | |
| 381 c.Run(rv); | |
| 382 } | |
| 383 | |
| 384 void UDPSocketLibevent::DoWriteCallback(int rv) { | |
| 385 DCHECK_NE(rv, ERR_IO_PENDING); | |
| 386 DCHECK(!write_callback_.is_null()); | |
| 387 | |
| 388 // since Run may result in Write being called, clear write_callback_ up front. | |
| 389 CompletionCallback c = write_callback_; | |
| 390 write_callback_.Reset(); | |
| 391 c.Run(rv); | |
| 392 } | |
| 393 | |
| 394 void UDPSocketLibevent::DidCompleteRead() { | |
| 395 int result = | |
| 396 InternalRecvFrom(read_buf_.get(), read_buf_len_, recv_from_address_); | |
| 397 if (result != ERR_IO_PENDING) { | |
| 398 read_buf_ = NULL; | |
| 399 read_buf_len_ = 0; | |
| 400 recv_from_address_ = NULL; | |
| 401 bool ok = read_socket_watcher_.StopWatchingFileDescriptor(); | |
| 402 DCHECK(ok); | |
| 403 DoReadCallback(result); | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 void UDPSocketLibevent::LogRead(int result, | |
| 408 const char* bytes, | |
| 409 socklen_t addr_len, | |
| 410 const sockaddr* addr) const { | |
| 411 if (result < 0) { | |
| 412 net_log_.AddEventWithNetErrorCode(NetLog::TYPE_UDP_RECEIVE_ERROR, result); | |
| 413 return; | |
| 414 } | |
| 415 | |
| 416 if (net_log_.IsLogging()) { | |
| 417 DCHECK(addr_len > 0); | |
| 418 DCHECK(addr); | |
| 419 | |
| 420 IPEndPoint address; | |
| 421 bool is_address_valid = address.FromSockAddr(addr, addr_len); | |
| 422 net_log_.AddEvent( | |
| 423 NetLog::TYPE_UDP_BYTES_RECEIVED, | |
| 424 CreateNetLogUDPDataTranferCallback( | |
| 425 result, bytes, | |
| 426 is_address_valid ? &address : NULL)); | |
| 427 } | |
| 428 | |
| 429 NetworkActivityMonitor::GetInstance()->IncrementBytesReceived(result); | |
| 430 } | |
| 431 | |
| 432 void UDPSocketLibevent::DidCompleteWrite() { | |
| 433 int result = | |
| 434 InternalSendTo(write_buf_.get(), write_buf_len_, send_to_address_.get()); | |
| 435 | |
| 436 if (result != ERR_IO_PENDING) { | |
| 437 write_buf_ = NULL; | |
| 438 write_buf_len_ = 0; | |
| 439 send_to_address_.reset(); | |
| 440 write_socket_watcher_.StopWatchingFileDescriptor(); | |
| 441 DoWriteCallback(result); | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 void UDPSocketLibevent::LogWrite(int result, | |
| 446 const char* bytes, | |
| 447 const IPEndPoint* address) const { | |
| 448 if (result < 0) { | |
| 449 net_log_.AddEventWithNetErrorCode(NetLog::TYPE_UDP_SEND_ERROR, result); | |
| 450 return; | |
| 451 } | |
| 452 | |
| 453 if (net_log_.IsLogging()) { | |
| 454 net_log_.AddEvent( | |
| 455 NetLog::TYPE_UDP_BYTES_SENT, | |
| 456 CreateNetLogUDPDataTranferCallback(result, bytes, address)); | |
| 457 } | |
| 458 | |
| 459 NetworkActivityMonitor::GetInstance()->IncrementBytesSent(result); | |
| 460 } | |
| 461 | |
| 462 int UDPSocketLibevent::InternalRecvFrom(IOBuffer* buf, int buf_len, | |
| 463 IPEndPoint* address) { | |
| 464 int bytes_transferred; | |
| 465 int flags = 0; | |
| 466 | |
| 467 SockaddrStorage storage; | |
| 468 | |
| 469 bytes_transferred = | |
| 470 HANDLE_EINTR(recvfrom(socket_, | |
| 471 buf->data(), | |
| 472 buf_len, | |
| 473 flags, | |
| 474 storage.addr, | |
| 475 &storage.addr_len)); | |
| 476 int result; | |
| 477 if (bytes_transferred >= 0) { | |
| 478 result = bytes_transferred; | |
| 479 if (address && !address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 480 result = ERR_ADDRESS_INVALID; | |
| 481 } else { | |
| 482 result = MapSystemError(errno); | |
| 483 } | |
| 484 if (result != ERR_IO_PENDING) | |
| 485 LogRead(result, buf->data(), storage.addr_len, storage.addr); | |
| 486 return result; | |
| 487 } | |
| 488 | |
| 489 int UDPSocketLibevent::InternalSendTo(IOBuffer* buf, int buf_len, | |
| 490 const IPEndPoint* address) { | |
| 491 SockaddrStorage storage; | |
| 492 struct sockaddr* addr = storage.addr; | |
| 493 if (!address) { | |
| 494 addr = NULL; | |
| 495 storage.addr_len = 0; | |
| 496 } else { | |
| 497 if (!address->ToSockAddr(storage.addr, &storage.addr_len)) { | |
| 498 int result = ERR_ADDRESS_INVALID; | |
| 499 LogWrite(result, NULL, NULL); | |
| 500 return result; | |
| 501 } | |
| 502 } | |
| 503 | |
| 504 int result = HANDLE_EINTR(sendto(socket_, | |
| 505 buf->data(), | |
| 506 buf_len, | |
| 507 0, | |
| 508 addr, | |
| 509 storage.addr_len)); | |
| 510 if (result < 0) | |
| 511 result = MapSystemError(errno); | |
| 512 if (result != ERR_IO_PENDING) | |
| 513 LogWrite(result, buf->data(), address); | |
| 514 return result; | |
| 515 } | |
| 516 | |
| 517 int UDPSocketLibevent::SetMulticastOptions() { | |
| 518 if (!(socket_options_ & SOCKET_OPTION_MULTICAST_LOOP)) { | |
| 519 int rv; | |
| 520 if (addr_family_ == AF_INET) { | |
| 521 u_char loop = 0; | |
| 522 rv = setsockopt(socket_, IPPROTO_IP, IP_MULTICAST_LOOP, | |
| 523 &loop, sizeof(loop)); | |
| 524 } else { | |
| 525 u_int loop = 0; | |
| 526 rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, | |
| 527 &loop, sizeof(loop)); | |
| 528 } | |
| 529 if (rv < 0) | |
| 530 return MapSystemError(errno); | |
| 531 } | |
| 532 if (multicast_time_to_live_ != IP_DEFAULT_MULTICAST_TTL) { | |
| 533 int rv; | |
| 534 if (addr_family_ == AF_INET) { | |
| 535 u_char ttl = multicast_time_to_live_; | |
| 536 rv = setsockopt(socket_, IPPROTO_IP, IP_MULTICAST_TTL, | |
| 537 &ttl, sizeof(ttl)); | |
| 538 } else { | |
| 539 // Signed integer. -1 to use route default. | |
| 540 int ttl = multicast_time_to_live_; | |
| 541 rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, | |
| 542 &ttl, sizeof(ttl)); | |
| 543 } | |
| 544 if (rv < 0) | |
| 545 return MapSystemError(errno); | |
| 546 } | |
| 547 if (multicast_interface_ != 0) { | |
| 548 switch (addr_family_) { | |
| 549 case AF_INET: { | |
| 550 #if !defined(OS_MACOSX) | |
| 551 ip_mreqn mreq; | |
| 552 mreq.imr_ifindex = multicast_interface_; | |
| 553 mreq.imr_address.s_addr = htonl(INADDR_ANY); | |
| 554 #else | |
| 555 ip_mreq mreq; | |
| 556 int error = GetIPv4AddressFromIndex(socket_, multicast_interface_, | |
| 557 &mreq.imr_interface.s_addr); | |
| 558 if (error != OK) | |
| 559 return error; | |
| 560 #endif | |
| 561 int rv = setsockopt(socket_, IPPROTO_IP, IP_MULTICAST_IF, | |
| 562 reinterpret_cast<const char*>(&mreq), sizeof(mreq)); | |
| 563 if (rv) | |
| 564 return MapSystemError(errno); | |
| 565 break; | |
| 566 } | |
| 567 case AF_INET6: { | |
| 568 uint32 interface_index = multicast_interface_; | |
| 569 int rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_MULTICAST_IF, | |
| 570 reinterpret_cast<const char*>(&interface_index), | |
| 571 sizeof(interface_index)); | |
| 572 if (rv) | |
| 573 return MapSystemError(errno); | |
| 574 break; | |
| 575 } | |
| 576 default: | |
| 577 NOTREACHED() << "Invalid address family"; | |
| 578 return ERR_ADDRESS_INVALID; | |
| 579 } | |
| 580 } | |
| 581 return OK; | |
| 582 } | |
| 583 | |
| 584 int UDPSocketLibevent::DoBind(const IPEndPoint& address) { | |
| 585 SockaddrStorage storage; | |
| 586 if (!address.ToSockAddr(storage.addr, &storage.addr_len)) | |
| 587 return ERR_ADDRESS_INVALID; | |
| 588 int rv = bind(socket_, storage.addr, storage.addr_len); | |
| 589 if (rv == 0) | |
| 590 return OK; | |
| 591 int last_error = errno; | |
| 592 UMA_HISTOGRAM_SPARSE_SLOWLY("Net.UdpSocketBindErrorFromPosix", last_error); | |
| 593 #if defined(OS_CHROMEOS) | |
| 594 if (last_error == EINVAL) | |
| 595 return ERR_ADDRESS_IN_USE; | |
| 596 #elif defined(OS_MACOSX) | |
| 597 if (last_error == EADDRNOTAVAIL) | |
| 598 return ERR_ADDRESS_IN_USE; | |
| 599 #endif | |
| 600 return MapSystemError(last_error); | |
| 601 } | |
| 602 | |
| 603 int UDPSocketLibevent::RandomBind(const IPAddressNumber& address) { | |
| 604 DCHECK(bind_type_ == DatagramSocket::RANDOM_BIND && !rand_int_cb_.is_null()); | |
| 605 | |
| 606 for (int i = 0; i < kBindRetries; ++i) { | |
| 607 int rv = DoBind(IPEndPoint(address, | |
| 608 rand_int_cb_.Run(kPortStart, kPortEnd))); | |
| 609 if (rv == OK || rv != ERR_ADDRESS_IN_USE) | |
| 610 return rv; | |
| 611 } | |
| 612 return DoBind(IPEndPoint(address, 0)); | |
| 613 } | |
| 614 | |
| 615 int UDPSocketLibevent::JoinGroup(const IPAddressNumber& group_address) const { | |
| 616 DCHECK(CalledOnValidThread()); | |
| 617 if (!is_connected()) | |
| 618 return ERR_SOCKET_NOT_CONNECTED; | |
| 619 | |
| 620 switch (group_address.size()) { | |
| 621 case kIPv4AddressSize: { | |
| 622 if (addr_family_ != AF_INET) | |
| 623 return ERR_ADDRESS_INVALID; | |
| 624 | |
| 625 #if !defined(OS_MACOSX) | |
| 626 ip_mreqn mreq; | |
| 627 mreq.imr_ifindex = multicast_interface_; | |
| 628 mreq.imr_address.s_addr = htonl(INADDR_ANY); | |
| 629 #else | |
| 630 ip_mreq mreq; | |
| 631 int error = GetIPv4AddressFromIndex(socket_, multicast_interface_, | |
| 632 &mreq.imr_interface.s_addr); | |
| 633 if (error != OK) | |
| 634 return error; | |
| 635 #endif | |
| 636 memcpy(&mreq.imr_multiaddr, &group_address[0], kIPv4AddressSize); | |
| 637 int rv = setsockopt(socket_, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
| 638 &mreq, sizeof(mreq)); | |
| 639 if (rv < 0) | |
| 640 return MapSystemError(errno); | |
| 641 return OK; | |
| 642 } | |
| 643 case kIPv6AddressSize: { | |
| 644 if (addr_family_ != AF_INET6) | |
| 645 return ERR_ADDRESS_INVALID; | |
| 646 ipv6_mreq mreq; | |
| 647 mreq.ipv6mr_interface = multicast_interface_; | |
| 648 memcpy(&mreq.ipv6mr_multiaddr, &group_address[0], kIPv6AddressSize); | |
| 649 int rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_JOIN_GROUP, | |
| 650 &mreq, sizeof(mreq)); | |
| 651 if (rv < 0) | |
| 652 return MapSystemError(errno); | |
| 653 return OK; | |
| 654 } | |
| 655 default: | |
| 656 NOTREACHED() << "Invalid address family"; | |
| 657 return ERR_ADDRESS_INVALID; | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 int UDPSocketLibevent::LeaveGroup(const IPAddressNumber& group_address) const { | |
| 662 DCHECK(CalledOnValidThread()); | |
| 663 | |
| 664 if (!is_connected()) | |
| 665 return ERR_SOCKET_NOT_CONNECTED; | |
| 666 | |
| 667 switch (group_address.size()) { | |
| 668 case kIPv4AddressSize: { | |
| 669 if (addr_family_ != AF_INET) | |
| 670 return ERR_ADDRESS_INVALID; | |
| 671 ip_mreq mreq; | |
| 672 mreq.imr_interface.s_addr = INADDR_ANY; | |
| 673 memcpy(&mreq.imr_multiaddr, &group_address[0], kIPv4AddressSize); | |
| 674 int rv = setsockopt(socket_, IPPROTO_IP, IP_DROP_MEMBERSHIP, | |
| 675 &mreq, sizeof(mreq)); | |
| 676 if (rv < 0) | |
| 677 return MapSystemError(errno); | |
| 678 return OK; | |
| 679 } | |
| 680 case kIPv6AddressSize: { | |
| 681 if (addr_family_ != AF_INET6) | |
| 682 return ERR_ADDRESS_INVALID; | |
| 683 ipv6_mreq mreq; | |
| 684 mreq.ipv6mr_interface = 0; // 0 indicates default multicast interface. | |
| 685 memcpy(&mreq.ipv6mr_multiaddr, &group_address[0], kIPv6AddressSize); | |
| 686 int rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_LEAVE_GROUP, | |
| 687 &mreq, sizeof(mreq)); | |
| 688 if (rv < 0) | |
| 689 return MapSystemError(errno); | |
| 690 return OK; | |
| 691 } | |
| 692 default: | |
| 693 NOTREACHED() << "Invalid address family"; | |
| 694 return ERR_ADDRESS_INVALID; | |
| 695 } | |
| 696 } | |
| 697 | |
| 698 int UDPSocketLibevent::SetMulticastInterface(uint32 interface_index) { | |
| 699 DCHECK(CalledOnValidThread()); | |
| 700 if (is_connected()) | |
| 701 return ERR_SOCKET_IS_CONNECTED; | |
| 702 multicast_interface_ = interface_index; | |
| 703 return OK; | |
| 704 } | |
| 705 | |
| 706 int UDPSocketLibevent::SetMulticastTimeToLive(int time_to_live) { | |
| 707 DCHECK(CalledOnValidThread()); | |
| 708 if (is_connected()) | |
| 709 return ERR_SOCKET_IS_CONNECTED; | |
| 710 | |
| 711 if (time_to_live < 0 || time_to_live > 255) | |
| 712 return ERR_INVALID_ARGUMENT; | |
| 713 multicast_time_to_live_ = time_to_live; | |
| 714 return OK; | |
| 715 } | |
| 716 | |
| 717 int UDPSocketLibevent::SetMulticastLoopbackMode(bool loopback) { | |
| 718 DCHECK(CalledOnValidThread()); | |
| 719 if (is_connected()) | |
| 720 return ERR_SOCKET_IS_CONNECTED; | |
| 721 | |
| 722 if (loopback) | |
| 723 socket_options_ |= SOCKET_OPTION_MULTICAST_LOOP; | |
| 724 else | |
| 725 socket_options_ &= ~SOCKET_OPTION_MULTICAST_LOOP; | |
| 726 return OK; | |
| 727 } | |
| 728 | |
| 729 int UDPSocketLibevent::SetDiffServCodePoint(DiffServCodePoint dscp) { | |
| 730 if (dscp == DSCP_NO_CHANGE) { | |
| 731 return OK; | |
| 732 } | |
| 733 int rv; | |
| 734 int dscp_and_ecn = dscp << 2; | |
| 735 if (addr_family_ == AF_INET) { | |
| 736 rv = setsockopt(socket_, IPPROTO_IP, IP_TOS, | |
| 737 &dscp_and_ecn, sizeof(dscp_and_ecn)); | |
| 738 } else { | |
| 739 rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_TCLASS, | |
| 740 &dscp_and_ecn, sizeof(dscp_and_ecn)); | |
| 741 } | |
| 742 if (rv < 0) | |
| 743 return MapSystemError(errno); | |
| 744 | |
| 745 return OK; | |
| 746 } | |
| 747 | |
| 748 void UDPSocketLibevent::DetachFromThread() { | |
| 749 base::NonThreadSafe::DetachFromThread(); | |
| 750 } | |
| 751 | |
| 752 } // namespace net | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 992733002:
Remove //net (except for Android test stuff) and sdch (Closed)
Base URL: git@github.com:domokit/mojo.git@master