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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 <net/if.h> | |
| 10 #include <netdb.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/debug/alias.h" | |
| 17 #include "base/logging.h" | |
| 18 #include "base/message_loop/message_loop.h" | |
| 19 #include "base/metrics/sparse_histogram.h" | |
| 20 #include "base/posix/eintr_wrapper.h" | |
| 21 #include "base/rand_util.h" | |
| 22 #include "net/base/io_buffer.h" | |
| 23 #include "net/base/ip_endpoint.h" | |
| 24 #include "net/base/net_errors.h" | |
| 25 #include "net/base/net_util.h" | |
| 26 #include "net/base/network_activity_monitor.h" | |
| 27 #include "net/log/net_log.h" | |
| 28 #include "net/socket/socket_descriptor.h" | |
| 29 #include "net/udp/udp_net_log_parameters.h" | |
| 30 | |
| 31 | |
| 32 namespace net { | |
| 33 | |
| 34 namespace { | |
| 35 | |
| 36 const int kBindRetries = 10; | |
| 37 const int kPortStart = 1024; | |
| 38 const int kPortEnd = 65535; | |
| 39 | |
| 40 #if defined(OS_MACOSX) | |
| 41 | |
| 42 // Returns IPv4 address in network order. | |
| 43 int GetIPv4AddressFromIndex(int socket, uint32 index, uint32* address){ | |
| 44 if (!index) { | |
| 45 *address = htonl(INADDR_ANY); | |
| 46 return OK; | |
| 47 } | |
| 48 ifreq ifr; | |
| 49 ifr.ifr_addr.sa_family = AF_INET; | |
| 50 if (!if_indextoname(index, ifr.ifr_name)) | |
| 51 return MapSystemError(errno); | |
| 52 int rv = ioctl(socket, SIOCGIFADDR, &ifr); | |
| 53 if (rv == -1) | |
| 54 return MapSystemError(errno); | |
| 55 *address = reinterpret_cast<sockaddr_in*>(&ifr.ifr_addr)->sin_addr.s_addr; | |
| 56 return OK; | |
| 57 } | |
| 58 | |
| 59 #endif // OS_MACOSX | |
| 60 | |
| 61 } // namespace | |
| 62 | |
| 63 UDPSocketLibevent::UDPSocketLibevent( | |
| 64 DatagramSocket::BindType bind_type, | |
| 65 const RandIntCallback& rand_int_cb, | |
| 66 net::NetLog* net_log, | |
| 67 const net::NetLog::Source& source) | |
| 68 : socket_(kInvalidSocket), | |
| 69 addr_family_(0), | |
| 70 is_connected_(false), | |
| 71 socket_options_(SOCKET_OPTION_MULTICAST_LOOP), | |
| 72 multicast_interface_(0), | |
| 73 multicast_time_to_live_(1), | |
| 74 bind_type_(bind_type), | |
| 75 rand_int_cb_(rand_int_cb), | |
| 76 read_watcher_(this), | |
| 77 write_watcher_(this), | |
| 78 read_buf_len_(0), | |
| 79 recv_from_address_(NULL), | |
| 80 write_buf_len_(0), | |
| 81 net_log_(BoundNetLog::Make(net_log, NetLog::SOURCE_UDP_SOCKET)) { | |
| 82 net_log_.BeginEvent(NetLog::TYPE_SOCKET_ALIVE, | |
| 83 source.ToEventParametersCallback()); | |
| 84 if (bind_type == DatagramSocket::RANDOM_BIND) | |
| 85 DCHECK(!rand_int_cb.is_null()); | |
| 86 } | |
| 87 | |
| 88 UDPSocketLibevent::~UDPSocketLibevent() { | |
| 89 Close(); | |
| 90 net_log_.EndEvent(NetLog::TYPE_SOCKET_ALIVE); | |
| 91 } | |
| 92 | |
| 93 int UDPSocketLibevent::Open(AddressFamily address_family) { | |
| 94 DCHECK(CalledOnValidThread()); | |
| 95 DCHECK_EQ(socket_, kInvalidSocket); | |
| 96 | |
| 97 addr_family_ = ConvertAddressFamily(address_family); | |
| 98 socket_ = CreatePlatformSocket(addr_family_, SOCK_DGRAM, 0); | |
| 99 if (socket_ == kInvalidSocket) | |
| 100 return MapSystemError(errno); | |
| 101 if (SetNonBlocking(socket_)) { | |
| 102 const int err = MapSystemError(errno); | |
| 103 Close(); | |
| 104 return err; | |
| 105 } | |
| 106 return OK; | |
| 107 } | |
| 108 | |
| 109 void UDPSocketLibevent::Close() { | |
| 110 DCHECK(CalledOnValidThread()); | |
| 111 | |
| 112 if (socket_ == kInvalidSocket) | |
| 113 return; | |
| 114 | |
| 115 // Zero out any pending read/write callback state. | |
| 116 read_buf_ = NULL; | |
| 117 read_buf_len_ = 0; | |
| 118 read_callback_.Reset(); | |
| 119 recv_from_address_ = NULL; | |
| 120 write_buf_ = NULL; | |
| 121 write_buf_len_ = 0; | |
| 122 write_callback_.Reset(); | |
| 123 send_to_address_.reset(); | |
| 124 | |
| 125 bool ok = read_socket_watcher_.StopWatchingFileDescriptor(); | |
| 126 DCHECK(ok); | |
| 127 ok = write_socket_watcher_.StopWatchingFileDescriptor(); | |
| 128 DCHECK(ok); | |
| 129 | |
| 130 PCHECK(IGNORE_EINTR(close(socket_)) == 0); | |
| 131 | |
| 132 socket_ = kInvalidSocket; | |
| 133 addr_family_ = 0; | |
| 134 is_connected_ = false; | |
| 135 } | |
| 136 | |
| 137 int UDPSocketLibevent::GetPeerAddress(IPEndPoint* address) const { | |
| 138 DCHECK(CalledOnValidThread()); | |
| 139 DCHECK(address); | |
| 140 if (!is_connected()) | |
| 141 return ERR_SOCKET_NOT_CONNECTED; | |
| 142 | |
| 143 if (!remote_address_.get()) { | |
| 144 SockaddrStorage storage; | |
| 145 if (getpeername(socket_, storage.addr, &storage.addr_len)) | |
| 146 return MapSystemError(errno); | |
| 147 scoped_ptr<IPEndPoint> address(new IPEndPoint()); | |
| 148 if (!address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 149 return ERR_ADDRESS_INVALID; | |
| 150 remote_address_.reset(address.release()); | |
| 151 } | |
| 152 | |
| 153 *address = *remote_address_; | |
| 154 return OK; | |
| 155 } | |
| 156 | |
| 157 int UDPSocketLibevent::GetLocalAddress(IPEndPoint* address) const { | |
| 158 DCHECK(CalledOnValidThread()); | |
| 159 DCHECK(address); | |
| 160 if (!is_connected()) | |
| 161 return ERR_SOCKET_NOT_CONNECTED; | |
| 162 | |
| 163 if (!local_address_.get()) { | |
| 164 SockaddrStorage storage; | |
| 165 if (getsockname(socket_, storage.addr, &storage.addr_len)) | |
| 166 return MapSystemError(errno); | |
| 167 scoped_ptr<IPEndPoint> address(new IPEndPoint()); | |
| 168 if (!address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 169 return ERR_ADDRESS_INVALID; | |
| 170 local_address_.reset(address.release()); | |
| 171 net_log_.AddEvent(NetLog::TYPE_UDP_LOCAL_ADDRESS, | |
| 172 CreateNetLogUDPConnectCallback(local_address_.get())); | |
| 173 } | |
| 174 | |
| 175 *address = *local_address_; | |
| 176 return OK; | |
| 177 } | |
| 178 | |
| 179 int UDPSocketLibevent::Read(IOBuffer* buf, | |
| 180 int buf_len, | |
| 181 const CompletionCallback& callback) { | |
| 182 return RecvFrom(buf, buf_len, NULL, callback); | |
| 183 } | |
| 184 | |
| 185 int UDPSocketLibevent::RecvFrom(IOBuffer* buf, | |
| 186 int buf_len, | |
| 187 IPEndPoint* address, | |
| 188 const CompletionCallback& callback) { | |
| 189 DCHECK(CalledOnValidThread()); | |
| 190 DCHECK_NE(kInvalidSocket, socket_); | |
| 191 CHECK(read_callback_.is_null()); | |
| 192 DCHECK(!recv_from_address_); | |
| 193 DCHECK(!callback.is_null()); // Synchronous operation not supported | |
| 194 DCHECK_GT(buf_len, 0); | |
| 195 | |
| 196 int nread = InternalRecvFrom(buf, buf_len, address); | |
| 197 if (nread != ERR_IO_PENDING) | |
| 198 return nread; | |
| 199 | |
| 200 if (!base::MessageLoopForIO::current()->WatchFileDescriptor( | |
| 201 socket_, true, base::MessageLoopForIO::WATCH_READ, | |
| 202 &read_socket_watcher_, &read_watcher_)) { | |
| 203 PLOG(ERROR) << "WatchFileDescriptor failed on read"; | |
| 204 int result = MapSystemError(errno); | |
| 205 LogRead(result, NULL, 0, NULL); | |
| 206 return result; | |
| 207 } | |
| 208 | |
| 209 read_buf_ = buf; | |
| 210 read_buf_len_ = buf_len; | |
| 211 recv_from_address_ = address; | |
| 212 read_callback_ = callback; | |
| 213 return ERR_IO_PENDING; | |
| 214 } | |
| 215 | |
| 216 int UDPSocketLibevent::Write(IOBuffer* buf, | |
| 217 int buf_len, | |
| 218 const CompletionCallback& callback) { | |
| 219 return SendToOrWrite(buf, buf_len, NULL, callback); | |
| 220 } | |
| 221 | |
| 222 int UDPSocketLibevent::SendTo(IOBuffer* buf, | |
| 223 int buf_len, | |
| 224 const IPEndPoint& address, | |
| 225 const CompletionCallback& callback) { | |
| 226 return SendToOrWrite(buf, buf_len, &address, callback); | |
| 227 } | |
| 228 | |
| 229 int UDPSocketLibevent::SendToOrWrite(IOBuffer* buf, | |
| 230 int buf_len, | |
| 231 const IPEndPoint* address, | |
| 232 const CompletionCallback& callback) { | |
| 233 DCHECK(CalledOnValidThread()); | |
| 234 DCHECK_NE(kInvalidSocket, socket_); | |
| 235 CHECK(write_callback_.is_null()); | |
| 236 DCHECK(!callback.is_null()); // Synchronous operation not supported | |
| 237 DCHECK_GT(buf_len, 0); | |
| 238 | |
| 239 int result = InternalSendTo(buf, buf_len, address); | |
| 240 if (result != ERR_IO_PENDING) | |
| 241 return result; | |
| 242 | |
| 243 if (!base::MessageLoopForIO::current()->WatchFileDescriptor( | |
| 244 socket_, true, base::MessageLoopForIO::WATCH_WRITE, | |
| 245 &write_socket_watcher_, &write_watcher_)) { | |
| 246 DVLOG(1) << "WatchFileDescriptor failed on write, errno " << errno; | |
| 247 int result = MapSystemError(errno); | |
| 248 LogWrite(result, NULL, NULL); | |
| 249 return result; | |
| 250 } | |
| 251 | |
| 252 write_buf_ = buf; | |
| 253 write_buf_len_ = buf_len; | |
| 254 DCHECK(!send_to_address_.get()); | |
| 255 if (address) { | |
| 256 send_to_address_.reset(new IPEndPoint(*address)); | |
| 257 } | |
| 258 write_callback_ = callback; | |
| 259 return ERR_IO_PENDING; | |
| 260 } | |
| 261 | |
| 262 int UDPSocketLibevent::Connect(const IPEndPoint& address) { | |
| 263 DCHECK_NE(socket_, kInvalidSocket); | |
| 264 net_log_.BeginEvent(NetLog::TYPE_UDP_CONNECT, | |
| 265 CreateNetLogUDPConnectCallback(&address)); | |
| 266 int rv = InternalConnect(address); | |
| 267 net_log_.EndEventWithNetErrorCode(NetLog::TYPE_UDP_CONNECT, rv); | |
| 268 is_connected_ = (rv == OK); | |
| 269 return rv; | |
| 270 } | |
| 271 | |
| 272 int UDPSocketLibevent::InternalConnect(const IPEndPoint& address) { | |
| 273 DCHECK(CalledOnValidThread()); | |
| 274 DCHECK(!is_connected()); | |
| 275 DCHECK(!remote_address_.get()); | |
| 276 | |
| 277 int rv = 0; | |
| 278 if (bind_type_ == DatagramSocket::RANDOM_BIND) { | |
| 279 // Construct IPAddressNumber of appropriate size (IPv4 or IPv6) of 0s, | |
| 280 // representing INADDR_ANY or in6addr_any. | |
| 281 size_t addr_size = address.GetSockAddrFamily() == AF_INET ? | |
| 282 kIPv4AddressSize : kIPv6AddressSize; | |
| 283 IPAddressNumber addr_any(addr_size); | |
| 284 rv = RandomBind(addr_any); | |
| 285 } | |
| 286 // else connect() does the DatagramSocket::DEFAULT_BIND | |
| 287 | |
| 288 if (rv < 0) { | |
| 289 UMA_HISTOGRAM_SPARSE_SLOWLY("Net.UdpSocketRandomBindErrorCode", -rv); | |
| 290 return rv; | |
| 291 } | |
| 292 | |
| 293 SockaddrStorage storage; | |
| 294 if (!address.ToSockAddr(storage.addr, &storage.addr_len)) | |
| 295 return ERR_ADDRESS_INVALID; | |
| 296 | |
| 297 rv = HANDLE_EINTR(connect(socket_, storage.addr, storage.addr_len)); | |
| 298 if (rv < 0) | |
| 299 return MapSystemError(errno); | |
| 300 | |
| 301 remote_address_.reset(new IPEndPoint(address)); | |
| 302 return rv; | |
| 303 } | |
| 304 | |
| 305 int UDPSocketLibevent::Bind(const IPEndPoint& address) { | |
| 306 DCHECK_NE(socket_, kInvalidSocket); | |
| 307 DCHECK(CalledOnValidThread()); | |
| 308 DCHECK(!is_connected()); | |
| 309 | |
| 310 int rv = SetMulticastOptions(); | |
| 311 if (rv < 0) | |
| 312 return rv; | |
| 313 | |
| 314 rv = DoBind(address); | |
| 315 if (rv < 0) | |
| 316 return rv; | |
| 317 | |
| 318 is_connected_ = true; | |
| 319 local_address_.reset(); | |
| 320 return rv; | |
| 321 } | |
| 322 | |
| 323 int UDPSocketLibevent::SetReceiveBufferSize(int32 size) { | |
| 324 DCHECK_NE(socket_, kInvalidSocket); | |
| 325 DCHECK(CalledOnValidThread()); | |
| 326 int rv = setsockopt(socket_, SOL_SOCKET, SO_RCVBUF, | |
| 327 reinterpret_cast<const char*>(&size), sizeof(size)); | |
| 328 return rv == 0 ? OK : MapSystemError(errno); | |
| 329 } | |
| 330 | |
| 331 int UDPSocketLibevent::SetSendBufferSize(int32 size) { | |
| 332 DCHECK_NE(socket_, kInvalidSocket); | |
| 333 DCHECK(CalledOnValidThread()); | |
| 334 int rv = setsockopt(socket_, SOL_SOCKET, SO_SNDBUF, | |
| 335 reinterpret_cast<const char*>(&size), sizeof(size)); | |
| 336 return rv == 0 ? OK : MapSystemError(errno); | |
| 337 } | |
| 338 | |
| 339 int UDPSocketLibevent::AllowAddressReuse() { | |
| 340 DCHECK_NE(socket_, kInvalidSocket); | |
| 341 DCHECK(CalledOnValidThread()); | |
| 342 DCHECK(!is_connected()); | |
| 343 int true_value = 1; | |
| 344 int rv = setsockopt( | |
| 345 socket_, SOL_SOCKET, SO_REUSEADDR, &true_value, sizeof(true_value)); | |
| 346 return rv == 0 ? OK : MapSystemError(errno); | |
| 347 } | |
| 348 | |
| 349 int UDPSocketLibevent::SetBroadcast(bool broadcast) { | |
| 350 DCHECK_NE(socket_, kInvalidSocket); | |
| 351 DCHECK(CalledOnValidThread()); | |
| 352 int value = broadcast ? 1 : 0; | |
| 353 int rv; | |
| 354 #if defined(OS_MACOSX) | |
| 355 // SO_REUSEPORT on OSX permits multiple processes to each receive | |
| 356 // UDP multicast or broadcast datagrams destined for the bound | |
| 357 // port. | |
| 358 rv = setsockopt(socket_, SOL_SOCKET, SO_REUSEPORT, &value, sizeof(value)); | |
| 359 #else | |
| 360 rv = setsockopt(socket_, SOL_SOCKET, SO_BROADCAST, &value, sizeof(value)); | |
| 361 #endif // defined(OS_MACOSX) | |
| 362 return rv == 0 ? OK : MapSystemError(errno); | |
| 363 } | |
| 364 | |
| 365 void UDPSocketLibevent::ReadWatcher::OnFileCanReadWithoutBlocking(int) { | |
| 366 if (!socket_->read_callback_.is_null()) | |
| 367 socket_->DidCompleteRead(); | |
| 368 } | |
| 369 | |
| 370 void UDPSocketLibevent::WriteWatcher::OnFileCanWriteWithoutBlocking(int) { | |
| 371 if (!socket_->write_callback_.is_null()) | |
| 372 socket_->DidCompleteWrite(); | |
| 373 } | |
| 374 | |
| 375 void UDPSocketLibevent::DoReadCallback(int rv) { | |
| 376 DCHECK_NE(rv, ERR_IO_PENDING); | |
| 377 DCHECK(!read_callback_.is_null()); | |
| 378 | |
| 379 // since Run may result in Read being called, clear read_callback_ up front. | |
| 380 CompletionCallback c = read_callback_; | |
| 381 read_callback_.Reset(); | |
| 382 c.Run(rv); | |
| 383 } | |
| 384 | |
| 385 void UDPSocketLibevent::DoWriteCallback(int rv) { | |
| 386 DCHECK_NE(rv, ERR_IO_PENDING); | |
| 387 DCHECK(!write_callback_.is_null()); | |
| 388 | |
| 389 // since Run may result in Write being called, clear write_callback_ up front. | |
| 390 CompletionCallback c = write_callback_; | |
| 391 write_callback_.Reset(); | |
| 392 c.Run(rv); | |
| 393 } | |
| 394 | |
| 395 void UDPSocketLibevent::DidCompleteRead() { | |
| 396 int result = | |
| 397 InternalRecvFrom(read_buf_.get(), read_buf_len_, recv_from_address_); | |
| 398 if (result != ERR_IO_PENDING) { | |
| 399 read_buf_ = NULL; | |
| 400 read_buf_len_ = 0; | |
| 401 recv_from_address_ = NULL; | |
| 402 bool ok = read_socket_watcher_.StopWatchingFileDescriptor(); | |
| 403 DCHECK(ok); | |
| 404 DoReadCallback(result); | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 void UDPSocketLibevent::LogRead(int result, | |
| 409 const char* bytes, | |
| 410 socklen_t addr_len, | |
| 411 const sockaddr* addr) const { | |
| 412 if (result < 0) { | |
| 413 net_log_.AddEventWithNetErrorCode(NetLog::TYPE_UDP_RECEIVE_ERROR, result); | |
| 414 return; | |
| 415 } | |
| 416 | |
| 417 if (net_log_.IsCapturing()) { | |
| 418 DCHECK(addr_len > 0); | |
| 419 DCHECK(addr); | |
| 420 | |
| 421 IPEndPoint address; | |
| 422 bool is_address_valid = address.FromSockAddr(addr, addr_len); | |
| 423 net_log_.AddEvent( | |
| 424 NetLog::TYPE_UDP_BYTES_RECEIVED, | |
| 425 CreateNetLogUDPDataTranferCallback( | |
| 426 result, bytes, | |
| 427 is_address_valid ? &address : NULL)); | |
| 428 } | |
| 429 | |
| 430 NetworkActivityMonitor::GetInstance()->IncrementBytesReceived(result); | |
| 431 } | |
| 432 | |
| 433 void UDPSocketLibevent::DidCompleteWrite() { | |
| 434 int result = | |
| 435 InternalSendTo(write_buf_.get(), write_buf_len_, send_to_address_.get()); | |
| 436 | |
| 437 if (result != ERR_IO_PENDING) { | |
| 438 write_buf_ = NULL; | |
| 439 write_buf_len_ = 0; | |
| 440 send_to_address_.reset(); | |
| 441 write_socket_watcher_.StopWatchingFileDescriptor(); | |
| 442 DoWriteCallback(result); | |
| 443 } | |
| 444 } | |
| 445 | |
| 446 void UDPSocketLibevent::LogWrite(int result, | |
| 447 const char* bytes, | |
| 448 const IPEndPoint* address) const { | |
| 449 if (result < 0) { | |
| 450 net_log_.AddEventWithNetErrorCode(NetLog::TYPE_UDP_SEND_ERROR, result); | |
| 451 return; | |
| 452 } | |
| 453 | |
| 454 if (net_log_.IsCapturing()) { | |
| 455 net_log_.AddEvent( | |
| 456 NetLog::TYPE_UDP_BYTES_SENT, | |
| 457 CreateNetLogUDPDataTranferCallback(result, bytes, address)); | |
| 458 } | |
| 459 | |
| 460 NetworkActivityMonitor::GetInstance()->IncrementBytesSent(result); | |
| 461 } | |
| 462 | |
| 463 int UDPSocketLibevent::InternalRecvFrom(IOBuffer* buf, int buf_len, | |
| 464 IPEndPoint* address) { | |
| 465 int bytes_transferred; | |
| 466 int flags = 0; | |
| 467 | |
| 468 SockaddrStorage storage; | |
| 469 | |
| 470 bytes_transferred = | |
| 471 HANDLE_EINTR(recvfrom(socket_, | |
| 472 buf->data(), | |
| 473 buf_len, | |
| 474 flags, | |
| 475 storage.addr, | |
| 476 &storage.addr_len)); | |
| 477 int result; | |
| 478 if (bytes_transferred >= 0) { | |
| 479 result = bytes_transferred; | |
| 480 if (address && !address->FromSockAddr(storage.addr, storage.addr_len)) | |
| 481 result = ERR_ADDRESS_INVALID; | |
| 482 } else { | |
| 483 result = MapSystemError(errno); | |
| 484 } | |
| 485 if (result != ERR_IO_PENDING) | |
| 486 LogRead(result, buf->data(), storage.addr_len, storage.addr); | |
| 487 return result; | |
| 488 } | |
| 489 | |
| 490 int UDPSocketLibevent::InternalSendTo(IOBuffer* buf, int buf_len, | |
| 491 const IPEndPoint* address) { | |
| 492 SockaddrStorage storage; | |
| 493 struct sockaddr* addr = storage.addr; | |
| 494 if (!address) { | |
| 495 addr = NULL; | |
| 496 storage.addr_len = 0; | |
| 497 } else { | |
| 498 if (!address->ToSockAddr(storage.addr, &storage.addr_len)) { | |
| 499 int result = ERR_ADDRESS_INVALID; | |
| 500 LogWrite(result, NULL, NULL); | |
| 501 return result; | |
| 502 } | |
| 503 } | |
| 504 | |
| 505 int result = HANDLE_EINTR(sendto(socket_, | |
| 506 buf->data(), | |
| 507 buf_len, | |
| 508 0, | |
| 509 addr, | |
| 510 storage.addr_len)); | |
| 511 if (result < 0) | |
| 512 result = MapSystemError(errno); | |
| 513 if (result != ERR_IO_PENDING) | |
| 514 LogWrite(result, buf->data(), address); | |
| 515 return result; | |
| 516 } | |
| 517 | |
| 518 int UDPSocketLibevent::SetMulticastOptions() { | |
| 519 if (!(socket_options_ & SOCKET_OPTION_MULTICAST_LOOP)) { | |
| 520 int rv; | |
| 521 if (addr_family_ == AF_INET) { | |
| 522 u_char loop = 0; | |
| 523 rv = setsockopt(socket_, IPPROTO_IP, IP_MULTICAST_LOOP, | |
| 524 &loop, sizeof(loop)); | |
| 525 } else { | |
| 526 u_int loop = 0; | |
| 527 rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, | |
| 528 &loop, sizeof(loop)); | |
| 529 } | |
| 530 if (rv < 0) | |
| 531 return MapSystemError(errno); | |
| 532 } | |
| 533 if (multicast_time_to_live_ != IP_DEFAULT_MULTICAST_TTL) { | |
| 534 int rv; | |
| 535 if (addr_family_ == AF_INET) { | |
| 536 u_char ttl = multicast_time_to_live_; | |
| 537 rv = setsockopt(socket_, IPPROTO_IP, IP_MULTICAST_TTL, | |
| 538 &ttl, sizeof(ttl)); | |
| 539 } else { | |
| 540 // Signed integer. -1 to use route default. | |
| 541 int ttl = multicast_time_to_live_; | |
| 542 rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, | |
| 543 &ttl, sizeof(ttl)); | |
| 544 } | |
| 545 if (rv < 0) | |
| 546 return MapSystemError(errno); | |
| 547 } | |
| 548 if (multicast_interface_ != 0) { | |
| 549 switch (addr_family_) { | |
| 550 case AF_INET: { | |
| 551 #if !defined(OS_MACOSX) | |
| 552 ip_mreqn mreq; | |
| 553 mreq.imr_ifindex = multicast_interface_; | |
| 554 mreq.imr_address.s_addr = htonl(INADDR_ANY); | |
| 555 #else | |
| 556 ip_mreq mreq; | |
| 557 int error = GetIPv4AddressFromIndex(socket_, multicast_interface_, | |
| 558 &mreq.imr_interface.s_addr); | |
| 559 if (error != OK) | |
| 560 return error; | |
| 561 #endif | |
| 562 int rv = setsockopt(socket_, IPPROTO_IP, IP_MULTICAST_IF, | |
| 563 reinterpret_cast<const char*>(&mreq), sizeof(mreq)); | |
| 564 if (rv) | |
| 565 return MapSystemError(errno); | |
| 566 break; | |
| 567 } | |
| 568 case AF_INET6: { | |
| 569 uint32 interface_index = multicast_interface_; | |
| 570 int rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_MULTICAST_IF, | |
| 571 reinterpret_cast<const char*>(&interface_index), | |
| 572 sizeof(interface_index)); | |
| 573 if (rv) | |
| 574 return MapSystemError(errno); | |
| 575 break; | |
| 576 } | |
| 577 default: | |
| 578 NOTREACHED() << "Invalid address family"; | |
| 579 return ERR_ADDRESS_INVALID; | |
| 580 } | |
| 581 } | |
| 582 return OK; | |
| 583 } | |
| 584 | |
| 585 int UDPSocketLibevent::DoBind(const IPEndPoint& address) { | |
| 586 SockaddrStorage storage; | |
| 587 if (!address.ToSockAddr(storage.addr, &storage.addr_len)) | |
| 588 return ERR_ADDRESS_INVALID; | |
| 589 int rv = bind(socket_, storage.addr, storage.addr_len); | |
| 590 if (rv == 0) | |
| 591 return OK; | |
| 592 int last_error = errno; | |
| 593 UMA_HISTOGRAM_SPARSE_SLOWLY("Net.UdpSocketBindErrorFromPosix", last_error); | |
| 594 #if defined(OS_CHROMEOS) | |
| 595 if (last_error == EINVAL) | |
| 596 return ERR_ADDRESS_IN_USE; | |
| 597 #elif defined(OS_MACOSX) | |
| 598 if (last_error == EADDRNOTAVAIL) | |
| 599 return ERR_ADDRESS_IN_USE; | |
| 600 #endif | |
| 601 return MapSystemError(last_error); | |
| 602 } | |
| 603 | |
| 604 int UDPSocketLibevent::RandomBind(const IPAddressNumber& address) { | |
| 605 DCHECK(bind_type_ == DatagramSocket::RANDOM_BIND && !rand_int_cb_.is_null()); | |
| 606 | |
| 607 for (int i = 0; i < kBindRetries; ++i) { | |
| 608 int rv = DoBind(IPEndPoint(address, | |
| 609 rand_int_cb_.Run(kPortStart, kPortEnd))); | |
| 610 if (rv == OK || rv != ERR_ADDRESS_IN_USE) | |
| 611 return rv; | |
| 612 } | |
| 613 return DoBind(IPEndPoint(address, 0)); | |
| 614 } | |
| 615 | |
| 616 int UDPSocketLibevent::JoinGroup(const IPAddressNumber& group_address) const { | |
| 617 DCHECK(CalledOnValidThread()); | |
| 618 if (!is_connected()) | |
| 619 return ERR_SOCKET_NOT_CONNECTED; | |
| 620 | |
| 621 switch (group_address.size()) { | |
| 622 case kIPv4AddressSize: { | |
| 623 if (addr_family_ != AF_INET) | |
| 624 return ERR_ADDRESS_INVALID; | |
| 625 | |
| 626 #if !defined(OS_MACOSX) | |
| 627 ip_mreqn mreq; | |
| 628 mreq.imr_ifindex = multicast_interface_; | |
| 629 mreq.imr_address.s_addr = htonl(INADDR_ANY); | |
| 630 #else | |
| 631 ip_mreq mreq; | |
| 632 int error = GetIPv4AddressFromIndex(socket_, multicast_interface_, | |
| 633 &mreq.imr_interface.s_addr); | |
| 634 if (error != OK) | |
| 635 return error; | |
| 636 #endif | |
| 637 memcpy(&mreq.imr_multiaddr, &group_address[0], kIPv4AddressSize); | |
| 638 int rv = setsockopt(socket_, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
| 639 &mreq, sizeof(mreq)); | |
| 640 if (rv < 0) | |
| 641 return MapSystemError(errno); | |
| 642 return OK; | |
| 643 } | |
| 644 case kIPv6AddressSize: { | |
| 645 if (addr_family_ != AF_INET6) | |
| 646 return ERR_ADDRESS_INVALID; | |
| 647 ipv6_mreq mreq; | |
| 648 mreq.ipv6mr_interface = multicast_interface_; | |
| 649 memcpy(&mreq.ipv6mr_multiaddr, &group_address[0], kIPv6AddressSize); | |
| 650 int rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_JOIN_GROUP, | |
| 651 &mreq, sizeof(mreq)); | |
| 652 if (rv < 0) | |
| 653 return MapSystemError(errno); | |
| 654 return OK; | |
| 655 } | |
| 656 default: | |
| 657 NOTREACHED() << "Invalid address family"; | |
| 658 return ERR_ADDRESS_INVALID; | |
| 659 } | |
| 660 } | |
| 661 | |
| 662 int UDPSocketLibevent::LeaveGroup(const IPAddressNumber& group_address) const { | |
| 663 DCHECK(CalledOnValidThread()); | |
| 664 | |
| 665 if (!is_connected()) | |
| 666 return ERR_SOCKET_NOT_CONNECTED; | |
| 667 | |
| 668 switch (group_address.size()) { | |
| 669 case kIPv4AddressSize: { | |
| 670 if (addr_family_ != AF_INET) | |
| 671 return ERR_ADDRESS_INVALID; | |
| 672 ip_mreq mreq; | |
| 673 mreq.imr_interface.s_addr = INADDR_ANY; | |
| 674 memcpy(&mreq.imr_multiaddr, &group_address[0], kIPv4AddressSize); | |
| 675 int rv = setsockopt(socket_, IPPROTO_IP, IP_DROP_MEMBERSHIP, | |
| 676 &mreq, sizeof(mreq)); | |
| 677 if (rv < 0) | |
| 678 return MapSystemError(errno); | |
| 679 return OK; | |
| 680 } | |
| 681 case kIPv6AddressSize: { | |
| 682 if (addr_family_ != AF_INET6) | |
| 683 return ERR_ADDRESS_INVALID; | |
| 684 ipv6_mreq mreq; | |
| 685 mreq.ipv6mr_interface = 0; // 0 indicates default multicast interface. | |
| 686 memcpy(&mreq.ipv6mr_multiaddr, &group_address[0], kIPv6AddressSize); | |
| 687 int rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_LEAVE_GROUP, | |
| 688 &mreq, sizeof(mreq)); | |
| 689 if (rv < 0) | |
| 690 return MapSystemError(errno); | |
| 691 return OK; | |
| 692 } | |
| 693 default: | |
| 694 NOTREACHED() << "Invalid address family"; | |
| 695 return ERR_ADDRESS_INVALID; | |
| 696 } | |
| 697 } | |
| 698 | |
| 699 int UDPSocketLibevent::SetMulticastInterface(uint32 interface_index) { | |
| 700 DCHECK(CalledOnValidThread()); | |
| 701 if (is_connected()) | |
| 702 return ERR_SOCKET_IS_CONNECTED; | |
| 703 multicast_interface_ = interface_index; | |
| 704 return OK; | |
| 705 } | |
| 706 | |
| 707 int UDPSocketLibevent::SetMulticastTimeToLive(int time_to_live) { | |
| 708 DCHECK(CalledOnValidThread()); | |
| 709 if (is_connected()) | |
| 710 return ERR_SOCKET_IS_CONNECTED; | |
| 711 | |
| 712 if (time_to_live < 0 || time_to_live > 255) | |
| 713 return ERR_INVALID_ARGUMENT; | |
| 714 multicast_time_to_live_ = time_to_live; | |
| 715 return OK; | |
| 716 } | |
| 717 | |
| 718 int UDPSocketLibevent::SetMulticastLoopbackMode(bool loopback) { | |
| 719 DCHECK(CalledOnValidThread()); | |
| 720 if (is_connected()) | |
| 721 return ERR_SOCKET_IS_CONNECTED; | |
| 722 | |
| 723 if (loopback) | |
| 724 socket_options_ |= SOCKET_OPTION_MULTICAST_LOOP; | |
| 725 else | |
| 726 socket_options_ &= ~SOCKET_OPTION_MULTICAST_LOOP; | |
| 727 return OK; | |
| 728 } | |
| 729 | |
| 730 int UDPSocketLibevent::SetDiffServCodePoint(DiffServCodePoint dscp) { | |
| 731 if (dscp == DSCP_NO_CHANGE) { | |
| 732 return OK; | |
| 733 } | |
| 734 int rv; | |
| 735 int dscp_and_ecn = dscp << 2; | |
| 736 if (addr_family_ == AF_INET) { | |
| 737 rv = setsockopt(socket_, IPPROTO_IP, IP_TOS, | |
| 738 &dscp_and_ecn, sizeof(dscp_and_ecn)); | |
| 739 } else { | |
| 740 rv = setsockopt(socket_, IPPROTO_IPV6, IPV6_TCLASS, | |
| 741 &dscp_and_ecn, sizeof(dscp_and_ecn)); | |
| 742 } | |
| 743 if (rv < 0) | |
| 744 return MapSystemError(errno); | |
| 745 | |
| 746 return OK; | |
| 747 } | |
| 748 | |
| 749 void UDPSocketLibevent::DetachFromThread() { | |
| 750 base::NonThreadSafe::DetachFromThread(); | |
| 751 } | |
| 752 | |
| 753 } // namespace net | |
| OLD | NEW |
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Chromium Code Reviews
Issue 1335423002:
net: Remove 'libevent' from filenames. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master