| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/common/socket.cpp |
| 3 | // Purpose: Socket handler classes |
| 4 | // Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia |
| 5 | // Created: April 1997 |
| 6 | // Copyright: (C) 1999-1997, Guilhem Lavaux |
| 7 | // (C) 2000-1999, Guillermo Rodriguez Garcia |
| 8 | // RCS_ID: $Id$ |
| 9 | // License: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ========================================================================== |
| 13 | // Declarations |
| 14 | // ========================================================================== |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #if wxUSE_SOCKETS |
| 24 | |
| 25 | #include "wx/socket.h" |
| 26 | |
| 27 | #ifndef WX_PRECOMP |
| 28 | #include "wx/object.h" |
| 29 | #include "wx/string.h" |
| 30 | #include "wx/intl.h" |
| 31 | #include "wx/log.h" |
| 32 | #include "wx/event.h" |
| 33 | #include "wx/app.h" |
| 34 | #include "wx/utils.h" |
| 35 | #include "wx/timer.h" |
| 36 | #include "wx/module.h" |
| 37 | #endif |
| 38 | |
| 39 | #include "wx/apptrait.h" |
| 40 | |
| 41 | #include "wx/sckaddr.h" |
| 42 | #include "wx/stopwatch.h" |
| 43 | |
| 44 | // DLL options compatibility check: |
| 45 | #include "wx/build.h" |
| 46 | WX_CHECK_BUILD_OPTIONS("wxNet") |
| 47 | |
| 48 | // -------------------------------------------------------------------------- |
| 49 | // macros and constants |
| 50 | // -------------------------------------------------------------------------- |
| 51 | |
| 52 | // discard buffer |
| 53 | #define MAX_DISCARD_SIZE (10 * 1024) |
| 54 | |
| 55 | // what to do within waits: we have 2 cases: from the main thread itself we |
| 56 | // have to call wxYield() to let the events (including the GUI events and the |
| 57 | // low-level (not wxWidgets) events from GSocket) be processed. From another |
| 58 | // thread it is enough to just call wxThread::Yield() which will give away the |
| 59 | // rest of our time slice: the explanation is that the events will be processed |
| 60 | // by the main thread anyhow, without calling wxYield(), but we don't want to |
| 61 | // eat the CPU time uselessly while sitting in the loop waiting for the data |
| 62 | #if wxUSE_THREADS |
| 63 | #define PROCESS_EVENTS() \ |
| 64 | { \ |
| 65 | if ( wxThread::IsMain() ) \ |
| 66 | wxYield(); \ |
| 67 | else \ |
| 68 | wxThread::Yield(); \ |
| 69 | } |
| 70 | #else // !wxUSE_THREADS |
| 71 | #define PROCESS_EVENTS() wxYield() |
| 72 | #endif // wxUSE_THREADS/!wxUSE_THREADS |
| 73 | |
| 74 | #define wxTRACE_Socket _T("wxSocket") |
| 75 | |
| 76 | // -------------------------------------------------------------------------- |
| 77 | // wxWin macros |
| 78 | // -------------------------------------------------------------------------- |
| 79 | |
| 80 | IMPLEMENT_CLASS(wxSocketBase, wxObject) |
| 81 | IMPLEMENT_CLASS(wxSocketServer, wxSocketBase) |
| 82 | IMPLEMENT_CLASS(wxSocketClient, wxSocketBase) |
| 83 | IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase) |
| 84 | IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent) |
| 85 | |
| 86 | // -------------------------------------------------------------------------- |
| 87 | // private classes |
| 88 | // -------------------------------------------------------------------------- |
| 89 | |
| 90 | class wxSocketState : public wxObject |
| 91 | { |
| 92 | public: |
| 93 | wxSocketFlags m_flags; |
| 94 | wxSocketEventFlags m_eventmask; |
| 95 | bool m_notify; |
| 96 | void *m_clientData; |
| 97 | |
| 98 | public: |
| 99 | wxSocketState() : wxObject() {} |
| 100 | |
| 101 | DECLARE_NO_COPY_CLASS(wxSocketState) |
| 102 | }; |
| 103 | |
| 104 | // ========================================================================== |
| 105 | // wxSocketBase |
| 106 | // ========================================================================== |
| 107 | |
| 108 | // -------------------------------------------------------------------------- |
| 109 | // Initialization and shutdown |
| 110 | // -------------------------------------------------------------------------- |
| 111 | |
| 112 | // FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses |
| 113 | // to m_countInit with a crit section |
| 114 | size_t wxSocketBase::m_countInit = 0; |
| 115 | |
| 116 | bool wxSocketBase::IsInitialized() |
| 117 | { |
| 118 | return m_countInit > 0; |
| 119 | } |
| 120 | |
| 121 | bool wxSocketBase::Initialize() |
| 122 | { |
| 123 | if ( !m_countInit++ ) |
| 124 | { |
| 125 | /* |
| 126 | Details: Initialize() creates a hidden window as a sink for socket |
| 127 | events, such as 'read completed'. wxMSW has only one message loop |
| 128 | for the main thread. If Initialize is called in a secondary thread, |
| 129 | the socket window will be created for the secondary thread, but |
| 130 | since there is no message loop on this thread, it will never |
| 131 | receive events and all socket operations will time out. |
| 132 | BTW, the main thread must not be stopped using sleep or block |
| 133 | on a semaphore (a bad idea in any case) or socket operations |
| 134 | will time out. |
| 135 | |
| 136 | On the Mac side, Initialize() stores a pointer to the CFRunLoop for |
| 137 | the main thread. Because secondary threads do not have run loops, |
| 138 | adding event notifications to the "Current" loop would have no |
| 139 | effect at all, events would never fire. |
| 140 | */ |
| 141 | wxASSERT_MSG( wxIsMainThread(), |
| 142 | wxT("Call wxSocketBase::Initialize() from the main thread first!")); |
| 143 | |
| 144 | wxAppTraits *traits = wxAppConsole::GetInstance() ? |
| 145 | wxAppConsole::GetInstance()->GetTraits() : NULL; |
| 146 | GSocketGUIFunctionsTable *functions = |
| 147 | traits ? traits->GetSocketGUIFunctionsTable() : NULL; |
| 148 | GSocket_SetGUIFunctions(functions); |
| 149 | |
| 150 | if ( !GSocket_Init() ) |
| 151 | { |
| 152 | m_countInit--; |
| 153 | |
| 154 | return false; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | return true; |
| 159 | } |
| 160 | |
| 161 | void wxSocketBase::Shutdown() |
| 162 | { |
| 163 | // we should be initialized |
| 164 | wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") ); |
| 165 | if ( --m_countInit == 0 ) |
| 166 | { |
| 167 | GSocket_Cleanup(); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | // -------------------------------------------------------------------------- |
| 172 | // Ctor and dtor |
| 173 | // -------------------------------------------------------------------------- |
| 174 | |
| 175 | void wxSocketBase::Init() |
| 176 | { |
| 177 | m_socket = NULL; |
| 178 | m_type = wxSOCKET_UNINIT; |
| 179 | |
| 180 | // state |
| 181 | m_flags = 0; |
| 182 | m_connected = |
| 183 | m_establishing = |
| 184 | m_reading = |
| 185 | m_writing = |
| 186 | m_error = false; |
| 187 | m_lcount = 0; |
| 188 | m_timeout = 600; |
| 189 | m_beingDeleted = false; |
| 190 | |
| 191 | // pushback buffer |
| 192 | m_unread = NULL; |
| 193 | m_unrd_size = 0; |
| 194 | m_unrd_cur = 0; |
| 195 | |
| 196 | // events |
| 197 | m_id = wxID_ANY; |
| 198 | m_handler = NULL; |
| 199 | m_clientData = NULL; |
| 200 | m_notify = false; |
| 201 | m_eventmask = 0; |
| 202 | |
| 203 | if ( !IsInitialized() ) |
| 204 | { |
| 205 | // this Initialize() will be undone by wxSocketModule::OnExit(), all the |
| 206 | // other calls to it should be matched by a call to Shutdown() |
| 207 | Initialize(); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | wxSocketBase::wxSocketBase() |
| 212 | { |
| 213 | Init(); |
| 214 | } |
| 215 | |
| 216 | wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type) |
| 217 | { |
| 218 | Init(); |
| 219 | |
| 220 | m_flags = flags; |
| 221 | m_type = type; |
| 222 | } |
| 223 | |
| 224 | wxSocketBase::~wxSocketBase() |
| 225 | { |
| 226 | // Just in case the app called Destroy() *and* then deleted |
| 227 | // the socket immediately: don't leave dangling pointers. |
| 228 | wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; |
| 229 | if ( traits ) |
| 230 | traits->RemoveFromPendingDelete(this); |
| 231 | |
| 232 | // Shutdown and close the socket |
| 233 | if (!m_beingDeleted) |
| 234 | Close(); |
| 235 | |
| 236 | // Destroy the GSocket object |
| 237 | if (m_socket) |
| 238 | delete m_socket; |
| 239 | |
| 240 | // Free the pushback buffer |
| 241 | if (m_unread) |
| 242 | free(m_unread); |
| 243 | } |
| 244 | |
| 245 | bool wxSocketBase::Destroy() |
| 246 | { |
| 247 | // Delayed destruction: the socket will be deleted during the next |
| 248 | // idle loop iteration. This ensures that all pending events have |
| 249 | // been processed. |
| 250 | m_beingDeleted = true; |
| 251 | |
| 252 | // Shutdown and close the socket |
| 253 | Close(); |
| 254 | |
| 255 | // Supress events from now on |
| 256 | Notify(false); |
| 257 | |
| 258 | // schedule this object for deletion |
| 259 | wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; |
| 260 | if ( traits ) |
| 261 | { |
| 262 | // let the traits object decide what to do with us |
| 263 | traits->ScheduleForDestroy(this); |
| 264 | } |
| 265 | else // no app or no traits |
| 266 | { |
| 267 | // in wxBase we might have no app object at all, don't leak memory |
| 268 | delete this; |
| 269 | } |
| 270 | |
| 271 | return true; |
| 272 | } |
| 273 | |
| 274 | // -------------------------------------------------------------------------- |
| 275 | // Basic IO calls |
| 276 | // -------------------------------------------------------------------------- |
| 277 | |
| 278 | // The following IO operations update m_error and m_lcount: |
| 279 | // {Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard} |
| 280 | // |
| 281 | // TODO: Should Connect, Accept and AcceptWith update m_error? |
| 282 | |
| 283 | bool wxSocketBase::Close() |
| 284 | { |
| 285 | // Interrupt pending waits |
| 286 | InterruptWait(); |
| 287 | |
| 288 | if (m_socket) |
| 289 | { |
| 290 | // Disable callbacks |
| 291 | m_socket->UnsetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | |
| 292 | GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); |
| 293 | |
| 294 | // Shutdown the connection |
| 295 | m_socket->Shutdown(); |
| 296 | } |
| 297 | |
| 298 | m_connected = false; |
| 299 | m_establishing = false; |
| 300 | return true; |
| 301 | } |
| 302 | |
| 303 | wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes) |
| 304 | { |
| 305 | // Mask read events |
| 306 | m_reading = true; |
| 307 | |
| 308 | m_lcount = _Read(buffer, nbytes); |
| 309 | |
| 310 | // If in wxSOCKET_WAITALL mode, all bytes should have been read. |
| 311 | if (m_flags & wxSOCKET_WAITALL) |
| 312 | m_error = (m_lcount != nbytes); |
| 313 | else |
| 314 | m_error = (m_lcount == 0); |
| 315 | |
| 316 | // Allow read events from now on |
| 317 | m_reading = false; |
| 318 | |
| 319 | return *this; |
| 320 | } |
| 321 | |
| 322 | wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes) |
| 323 | { |
| 324 | int total; |
| 325 | |
| 326 | // Try the pushback buffer first |
| 327 | total = GetPushback(buffer, nbytes, false); |
| 328 | nbytes -= total; |
| 329 | buffer = (char *)buffer + total; |
| 330 | |
| 331 | // Return now in one of the following cases: |
| 332 | // - the socket is invalid, |
| 333 | // - we got all the data |
| 334 | if ( !m_socket || |
| 335 | !nbytes ) |
| 336 | return total; |
| 337 | |
| 338 | // Possible combinations (they are checked in this order) |
| 339 | // wxSOCKET_NOWAIT |
| 340 | // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK) |
| 341 | // wxSOCKET_BLOCK |
| 342 | // wxSOCKET_NONE |
| 343 | // |
| 344 | int ret; |
| 345 | if (m_flags & wxSOCKET_NOWAIT) |
| 346 | { |
| 347 | m_socket->SetNonBlocking(1); |
| 348 | ret = m_socket->Read((char *)buffer, nbytes); |
| 349 | m_socket->SetNonBlocking(0); |
| 350 | |
| 351 | if (ret > 0) |
| 352 | total += ret; |
| 353 | } |
| 354 | else |
| 355 | { |
| 356 | bool more = true; |
| 357 | |
| 358 | while (more) |
| 359 | { |
| 360 | if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() ) |
| 361 | break; |
| 362 | |
| 363 | ret = m_socket->Read((char *)buffer, nbytes); |
| 364 | |
| 365 | if (ret > 0) |
| 366 | { |
| 367 | total += ret; |
| 368 | nbytes -= ret; |
| 369 | buffer = (char *)buffer + ret; |
| 370 | } |
| 371 | |
| 372 | // If we got here and wxSOCKET_WAITALL is not set, we can leave |
| 373 | // now. Otherwise, wait until we recv all the data or until there |
| 374 | // is an error. |
| 375 | // |
| 376 | more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL)); |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | return total; |
| 381 | } |
| 382 | |
| 383 | wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes) |
| 384 | { |
| 385 | wxUint32 len, len2, sig, total; |
| 386 | bool error; |
| 387 | int old_flags; |
| 388 | struct |
| 389 | { |
| 390 | unsigned char sig[4]; |
| 391 | unsigned char len[4]; |
| 392 | } msg; |
| 393 | |
| 394 | // Mask read events |
| 395 | m_reading = true; |
| 396 | |
| 397 | total = 0; |
| 398 | error = true; |
| 399 | old_flags = m_flags; |
| 400 | SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); |
| 401 | |
| 402 | if (_Read(&msg, sizeof(msg)) != sizeof(msg)) |
| 403 | goto exit; |
| 404 | |
| 405 | sig = (wxUint32)msg.sig[0]; |
| 406 | sig |= (wxUint32)(msg.sig[1] << 8); |
| 407 | sig |= (wxUint32)(msg.sig[2] << 16); |
| 408 | sig |= (wxUint32)(msg.sig[3] << 24); |
| 409 | |
| 410 | if (sig != 0xfeeddead) |
| 411 | { |
| 412 | wxLogWarning(_("wxSocket: invalid signature in ReadMsg.")); |
| 413 | goto exit; |
| 414 | } |
| 415 | |
| 416 | len = (wxUint32)msg.len[0]; |
| 417 | len |= (wxUint32)(msg.len[1] << 8); |
| 418 | len |= (wxUint32)(msg.len[2] << 16); |
| 419 | len |= (wxUint32)(msg.len[3] << 24); |
| 420 | |
| 421 | if (len > nbytes) |
| 422 | { |
| 423 | len2 = len - nbytes; |
| 424 | len = nbytes; |
| 425 | } |
| 426 | else |
| 427 | len2 = 0; |
| 428 | |
| 429 | // Don't attemp to read if the msg was zero bytes long. |
| 430 | if (len) |
| 431 | { |
| 432 | total = _Read(buffer, len); |
| 433 | |
| 434 | if (total != len) |
| 435 | goto exit; |
| 436 | } |
| 437 | if (len2) |
| 438 | { |
| 439 | char *discard_buffer = new char[MAX_DISCARD_SIZE]; |
| 440 | long discard_len; |
| 441 | |
| 442 | // NOTE: discarded bytes don't add to m_lcount. |
| 443 | do |
| 444 | { |
| 445 | discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2); |
| 446 | discard_len = _Read(discard_buffer, (wxUint32)discard_len); |
| 447 | len2 -= (wxUint32)discard_len; |
| 448 | } |
| 449 | while ((discard_len > 0) && len2); |
| 450 | |
| 451 | delete [] discard_buffer; |
| 452 | |
| 453 | if (len2 != 0) |
| 454 | goto exit; |
| 455 | } |
| 456 | if (_Read(&msg, sizeof(msg)) != sizeof(msg)) |
| 457 | goto exit; |
| 458 | |
| 459 | sig = (wxUint32)msg.sig[0]; |
| 460 | sig |= (wxUint32)(msg.sig[1] << 8); |
| 461 | sig |= (wxUint32)(msg.sig[2] << 16); |
| 462 | sig |= (wxUint32)(msg.sig[3] << 24); |
| 463 | |
| 464 | if (sig != 0xdeadfeed) |
| 465 | { |
| 466 | wxLogWarning(_("wxSocket: invalid signature in ReadMsg.")); |
| 467 | goto exit; |
| 468 | } |
| 469 | |
| 470 | // everything was OK |
| 471 | error = false; |
| 472 | |
| 473 | exit: |
| 474 | m_error = error; |
| 475 | m_lcount = total; |
| 476 | m_reading = false; |
| 477 | SetFlags(old_flags); |
| 478 | |
| 479 | return *this; |
| 480 | } |
| 481 | |
| 482 | wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes) |
| 483 | { |
| 484 | // Mask read events |
| 485 | m_reading = true; |
| 486 | |
| 487 | m_lcount = _Read(buffer, nbytes); |
| 488 | Pushback(buffer, m_lcount); |
| 489 | |
| 490 | // If in wxSOCKET_WAITALL mode, all bytes should have been read. |
| 491 | if (m_flags & wxSOCKET_WAITALL) |
| 492 | m_error = (m_lcount != nbytes); |
| 493 | else |
| 494 | m_error = (m_lcount == 0); |
| 495 | |
| 496 | // Allow read events again |
| 497 | m_reading = false; |
| 498 | |
| 499 | return *this; |
| 500 | } |
| 501 | |
| 502 | wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes) |
| 503 | { |
| 504 | // Mask write events |
| 505 | m_writing = true; |
| 506 | |
| 507 | m_lcount = _Write(buffer, nbytes); |
| 508 | |
| 509 | // If in wxSOCKET_WAITALL mode, all bytes should have been written. |
| 510 | if (m_flags & wxSOCKET_WAITALL) |
| 511 | m_error = (m_lcount != nbytes); |
| 512 | else |
| 513 | m_error = (m_lcount == 0); |
| 514 | |
| 515 | // Allow write events again |
| 516 | m_writing = false; |
| 517 | |
| 518 | return *this; |
| 519 | } |
| 520 | |
| 521 | wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) |
| 522 | { |
| 523 | wxUint32 total = 0; |
| 524 | |
| 525 | // If the socket is invalid or parameters are ill, return immediately |
| 526 | if (!m_socket || !buffer || !nbytes) |
| 527 | return 0; |
| 528 | |
| 529 | // Possible combinations (they are checked in this order) |
| 530 | // wxSOCKET_NOWAIT |
| 531 | // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK) |
| 532 | // wxSOCKET_BLOCK |
| 533 | // wxSOCKET_NONE |
| 534 | // |
| 535 | int ret; |
| 536 | if (m_flags & wxSOCKET_NOWAIT) |
| 537 | { |
| 538 | m_socket->SetNonBlocking(1); |
| 539 | ret = m_socket->Write((const char *)buffer, nbytes); |
| 540 | m_socket->SetNonBlocking(0); |
| 541 | |
| 542 | if (ret > 0) |
| 543 | total = ret; |
| 544 | } |
| 545 | else |
| 546 | { |
| 547 | bool more = true; |
| 548 | |
| 549 | while (more) |
| 550 | { |
| 551 | if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() ) |
| 552 | break; |
| 553 | |
| 554 | ret = m_socket->Write((const char *)buffer, nbytes); |
| 555 | |
| 556 | if (ret > 0) |
| 557 | { |
| 558 | total += ret; |
| 559 | nbytes -= ret; |
| 560 | buffer = (const char *)buffer + ret; |
| 561 | } |
| 562 | |
| 563 | // If we got here and wxSOCKET_WAITALL is not set, we can leave |
| 564 | // now. Otherwise, wait until we send all the data or until there |
| 565 | // is an error. |
| 566 | // |
| 567 | more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL)); |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | return total; |
| 572 | } |
| 573 | |
| 574 | wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes) |
| 575 | { |
| 576 | wxUint32 total; |
| 577 | bool error; |
| 578 | struct |
| 579 | { |
| 580 | unsigned char sig[4]; |
| 581 | unsigned char len[4]; |
| 582 | } msg; |
| 583 | |
| 584 | // Mask write events |
| 585 | m_writing = true; |
| 586 | |
| 587 | error = true; |
| 588 | total = 0; |
| 589 | SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); |
| 590 | |
| 591 | msg.sig[0] = (unsigned char) 0xad; |
| 592 | msg.sig[1] = (unsigned char) 0xde; |
| 593 | msg.sig[2] = (unsigned char) 0xed; |
| 594 | msg.sig[3] = (unsigned char) 0xfe; |
| 595 | |
| 596 | msg.len[0] = (unsigned char) (nbytes & 0xff); |
| 597 | msg.len[1] = (unsigned char) ((nbytes >> 8) & 0xff); |
| 598 | msg.len[2] = (unsigned char) ((nbytes >> 16) & 0xff); |
| 599 | msg.len[3] = (unsigned char) ((nbytes >> 24) & 0xff); |
| 600 | |
| 601 | if (_Write(&msg, sizeof(msg)) < sizeof(msg)) |
| 602 | goto exit; |
| 603 | |
| 604 | total = _Write(buffer, nbytes); |
| 605 | |
| 606 | if (total < nbytes) |
| 607 | goto exit; |
| 608 | |
| 609 | msg.sig[0] = (unsigned char) 0xed; |
| 610 | msg.sig[1] = (unsigned char) 0xfe; |
| 611 | msg.sig[2] = (unsigned char) 0xad; |
| 612 | msg.sig[3] = (unsigned char) 0xde; |
| 613 | msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0; |
| 614 | |
| 615 | if ((_Write(&msg, sizeof(msg))) < sizeof(msg)) |
| 616 | goto exit; |
| 617 | |
| 618 | // everything was OK |
| 619 | error = false; |
| 620 | |
| 621 | exit: |
| 622 | m_error = error; |
| 623 | m_lcount = total; |
| 624 | m_writing = false; |
| 625 | |
| 626 | return *this; |
| 627 | } |
| 628 | |
| 629 | wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes) |
| 630 | { |
| 631 | if (nbytes != 0) |
| 632 | Pushback(buffer, nbytes); |
| 633 | |
| 634 | m_error = false; |
| 635 | m_lcount = nbytes; |
| 636 | |
| 637 | return *this; |
| 638 | } |
| 639 | |
| 640 | wxSocketBase& wxSocketBase::Discard() |
| 641 | { |
| 642 | char *buffer = new char[MAX_DISCARD_SIZE]; |
| 643 | wxUint32 ret; |
| 644 | wxUint32 total = 0; |
| 645 | |
| 646 | // Mask read events |
| 647 | m_reading = true; |
| 648 | |
| 649 | SetFlags(wxSOCKET_NOWAIT); |
| 650 | |
| 651 | do |
| 652 | { |
| 653 | ret = _Read(buffer, MAX_DISCARD_SIZE); |
| 654 | total += ret; |
| 655 | } |
| 656 | while (ret == MAX_DISCARD_SIZE); |
| 657 | |
| 658 | delete[] buffer; |
| 659 | m_lcount = total; |
| 660 | m_error = false; |
| 661 | |
| 662 | // Allow read events again |
| 663 | m_reading = false; |
| 664 | |
| 665 | return *this; |
| 666 | } |
| 667 | |
| 668 | // -------------------------------------------------------------------------- |
| 669 | // Wait functions |
| 670 | // -------------------------------------------------------------------------- |
| 671 | |
| 672 | // All Wait functions poll the socket using GSocket_Select() to |
| 673 | // check for the specified combination of conditions, until one |
| 674 | // of these conditions become true, an error occurs, or the |
| 675 | // timeout elapses. The polling loop calls PROCESS_EVENTS(), so |
| 676 | // this won't block the GUI. |
| 677 | |
| 678 | bool wxSocketBase::_Wait(long seconds, |
| 679 | long milliseconds, |
| 680 | wxSocketEventFlags flags) |
| 681 | { |
| 682 | GSocketEventFlags result; |
| 683 | long timeout; // in ms |
| 684 | |
| 685 | // Set this to true to interrupt ongoing waits |
| 686 | m_interrupt = false; |
| 687 | |
| 688 | // Check for valid socket |
| 689 | if (!m_socket) |
| 690 | return false; |
| 691 | |
| 692 | // Check for valid timeout value. |
| 693 | if (seconds != -1) |
| 694 | timeout = seconds * 1000 + milliseconds; |
| 695 | else |
| 696 | timeout = m_timeout * 1000; |
| 697 | |
| 698 | bool has_event_loop = wxTheApp->GetTraits() ? (wxTheApp->GetTraits()->GetSocketGUIFunctionsTable() ? true : false) : false; |
| 699 | |
| 700 | // Wait in an active polling loop. |
| 701 | // |
| 702 | // NOTE: We duplicate some of the code in OnRequest, but this doesn't |
| 703 | // hurt. It has to be here because the (GSocket) event might arrive |
| 704 | // a bit delayed, and it has to be in OnRequest as well because we |
| 705 | // don't know whether the Wait functions are being used. |
| 706 | // |
| 707 | // Do this at least once (important if timeout == 0, when |
| 708 | // we are just polling). Also, if just polling, do not yield. |
| 709 | |
| 710 | const wxMilliClock_t time_limit = wxGetLocalTimeMillis() + timeout; |
| 711 | bool done = false; |
| 712 | bool valid_result = false; |
| 713 | |
| 714 | if (!has_event_loop) |
| 715 | { |
| 716 | // This is used to avoid a busy loop on wxBase - having a select |
| 717 | // timeout of 50 ms per iteration should be enough. |
| 718 | if (timeout > 50) |
| 719 | m_socket->SetTimeout(50); |
| 720 | else |
| 721 | m_socket->SetTimeout(timeout); |
| 722 | } |
| 723 | |
| 724 | while (!done) |
| 725 | { |
| 726 | result = m_socket->Select(flags | GSOCK_LOST_FLAG); |
| 727 | |
| 728 | // Incoming connection (server) or connection established (client) |
| 729 | if (result & GSOCK_CONNECTION_FLAG) |
| 730 | { |
| 731 | m_connected = true; |
| 732 | m_establishing = false; |
| 733 | valid_result = true; |
| 734 | break; |
| 735 | } |
| 736 | |
| 737 | // Data available or output buffer ready |
| 738 | if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG)) |
| 739 | { |
| 740 | valid_result = true; |
| 741 | break; |
| 742 | } |
| 743 | |
| 744 | // Connection lost |
| 745 | if (result & GSOCK_LOST_FLAG) |
| 746 | { |
| 747 | m_connected = false; |
| 748 | m_establishing = false; |
| 749 | valid_result = ((flags & GSOCK_LOST_FLAG) != 0); |
| 750 | break; |
| 751 | } |
| 752 | |
| 753 | // Wait more? |
| 754 | long time_left = wxMilliClockToLong(time_limit - wxGetLocalTimeMillis()); |
| 755 | if ((!timeout) || (time_left <= 0) || (m_interrupt)) |
| 756 | done = true; |
| 757 | else |
| 758 | { |
| 759 | if (has_event_loop) |
| 760 | { |
| 761 | PROCESS_EVENTS(); |
| 762 | } |
| 763 | else |
| 764 | { |
| 765 | // If there's less than 50 ms left, just call select with that timeout. |
| 766 | if (time_left < 50) |
| 767 | m_socket->SetTimeout(time_left); |
| 768 | } |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | // Set timeout back to original value (we overwrote it for polling) |
| 773 | if (!has_event_loop) |
| 774 | m_socket->SetTimeout(m_timeout*1000); |
| 775 | |
| 776 | return valid_result; |
| 777 | } |
| 778 | |
| 779 | bool wxSocketBase::Wait(long seconds, long milliseconds) |
| 780 | { |
| 781 | return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | |
| 782 | GSOCK_OUTPUT_FLAG | |
| 783 | GSOCK_CONNECTION_FLAG | |
| 784 | GSOCK_LOST_FLAG); |
| 785 | } |
| 786 | |
| 787 | bool wxSocketBase::WaitForRead(long seconds, long milliseconds) |
| 788 | { |
| 789 | // Check pushback buffer before entering _Wait |
| 790 | if (m_unread) |
| 791 | return true; |
| 792 | |
| 793 | // Note that GSOCK_INPUT_LOST has to be explicitly passed to |
| 794 | // _Wait because of the semantics of WaitForRead: a return |
| 795 | // value of true means that a GSocket_Read call will return |
| 796 | // immediately, not that there is actually data to read. |
| 797 | |
| 798 | return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | |
| 799 | GSOCK_LOST_FLAG); |
| 800 | } |
| 801 | |
| 802 | |
| 803 | bool wxSocketBase::WaitForWrite(long seconds, long milliseconds) |
| 804 | { |
| 805 | return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG); |
| 806 | } |
| 807 | |
| 808 | bool wxSocketBase::WaitForLost(long seconds, long milliseconds) |
| 809 | { |
| 810 | return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG); |
| 811 | } |
| 812 | |
| 813 | // -------------------------------------------------------------------------- |
| 814 | // Miscellaneous |
| 815 | // -------------------------------------------------------------------------- |
| 816 | |
| 817 | // |
| 818 | // Get local or peer address |
| 819 | // |
| 820 | |
| 821 | bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const |
| 822 | { |
| 823 | GAddress *peer; |
| 824 | |
| 825 | if (!m_socket) |
| 826 | return false; |
| 827 | |
| 828 | peer = m_socket->GetPeer(); |
| 829 | |
| 830 | // copying a null address would just trigger an assert anyway |
| 831 | |
| 832 | if (!peer) |
| 833 | return false; |
| 834 | |
| 835 | addr_man.SetAddress(peer); |
| 836 | GAddress_destroy(peer); |
| 837 | |
| 838 | return true; |
| 839 | } |
| 840 | |
| 841 | bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const |
| 842 | { |
| 843 | GAddress *local; |
| 844 | |
| 845 | if (!m_socket) |
| 846 | return false; |
| 847 | |
| 848 | local = m_socket->GetLocal(); |
| 849 | addr_man.SetAddress(local); |
| 850 | GAddress_destroy(local); |
| 851 | |
| 852 | return true; |
| 853 | } |
| 854 | |
| 855 | // |
| 856 | // Save and restore socket state |
| 857 | // |
| 858 | |
| 859 | void wxSocketBase::SaveState() |
| 860 | { |
| 861 | wxSocketState *state; |
| 862 | |
| 863 | state = new wxSocketState(); |
| 864 | |
| 865 | state->m_flags = m_flags; |
| 866 | state->m_notify = m_notify; |
| 867 | state->m_eventmask = m_eventmask; |
| 868 | state->m_clientData = m_clientData; |
| 869 | |
| 870 | m_states.Append(state); |
| 871 | } |
| 872 | |
| 873 | void wxSocketBase::RestoreState() |
| 874 | { |
| 875 | wxList::compatibility_iterator node; |
| 876 | wxSocketState *state; |
| 877 | |
| 878 | node = m_states.GetLast(); |
| 879 | if (!node) |
| 880 | return; |
| 881 | |
| 882 | state = (wxSocketState *)node->GetData(); |
| 883 | |
| 884 | m_flags = state->m_flags; |
| 885 | m_notify = state->m_notify; |
| 886 | m_eventmask = state->m_eventmask; |
| 887 | m_clientData = state->m_clientData; |
| 888 | |
| 889 | m_states.Erase(node); |
| 890 | delete state; |
| 891 | } |
| 892 | |
| 893 | // |
| 894 | // Timeout and flags |
| 895 | // |
| 896 | |
| 897 | void wxSocketBase::SetTimeout(long seconds) |
| 898 | { |
| 899 | m_timeout = seconds; |
| 900 | |
| 901 | if (m_socket) |
| 902 | m_socket->SetTimeout(m_timeout * 1000); |
| 903 | } |
| 904 | |
| 905 | void wxSocketBase::SetFlags(wxSocketFlags flags) |
| 906 | { |
| 907 | m_flags = flags; |
| 908 | } |
| 909 | |
| 910 | |
| 911 | // -------------------------------------------------------------------------- |
| 912 | // Event handling |
| 913 | // -------------------------------------------------------------------------- |
| 914 | |
| 915 | // A note on how events are processed, which is probably the most |
| 916 | // difficult thing to get working right while keeping the same API |
| 917 | // and functionality for all platforms. |
| 918 | // |
| 919 | // When GSocket detects an event, it calls wx_socket_callback, which in |
| 920 | // turn just calls wxSocketBase::OnRequest in the corresponding wxSocket |
| 921 | // object. OnRequest does some housekeeping, and if the event is to be |
| 922 | // propagated to the user, it creates a new wxSocketEvent object and |
| 923 | // posts it. The event is not processed immediately, but delayed with |
| 924 | // AddPendingEvent instead. This is necessary in order to decouple the |
| 925 | // event processing from wx_socket_callback; otherwise, subsequent IO |
| 926 | // calls made from the user event handler would fail, as gtk callbacks |
| 927 | // are not reentrant. |
| 928 | // |
| 929 | // Note that, unlike events, user callbacks (now deprecated) are _not_ |
| 930 | // decoupled from wx_socket_callback and thus they suffer from a variety |
| 931 | // of problems. Avoid them where possible and use events instead. |
| 932 | |
| 933 | extern "C" |
| 934 | void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket), |
| 935 | GSocketEvent notification, |
| 936 | char *cdata) |
| 937 | { |
| 938 | wxSocketBase *sckobj = (wxSocketBase *)cdata; |
| 939 | |
| 940 | sckobj->OnRequest((wxSocketNotify) notification); |
| 941 | } |
| 942 | |
| 943 | void wxSocketBase::OnRequest(wxSocketNotify notification) |
| 944 | { |
| 945 | // NOTE: We duplicate some of the code in _Wait, but this doesn't |
| 946 | // hurt. It has to be here because the (GSocket) event might arrive |
| 947 | // a bit delayed, and it has to be in _Wait as well because we don't |
| 948 | // know whether the Wait functions are being used. |
| 949 | |
| 950 | switch(notification) |
| 951 | { |
| 952 | case wxSOCKET_CONNECTION: |
| 953 | m_establishing = false; |
| 954 | m_connected = true; |
| 955 | break; |
| 956 | |
| 957 | // If we are in the middle of a R/W operation, do not |
| 958 | // propagate events to users. Also, filter 'late' events |
| 959 | // which are no longer valid. |
| 960 | |
| 961 | case wxSOCKET_INPUT: |
| 962 | if (m_reading || !m_socket->Select(GSOCK_INPUT_FLAG)) |
| 963 | return; |
| 964 | break; |
| 965 | |
| 966 | case wxSOCKET_OUTPUT: |
| 967 | if (m_writing || !m_socket->Select(GSOCK_OUTPUT_FLAG)) |
| 968 | return; |
| 969 | break; |
| 970 | |
| 971 | case wxSOCKET_LOST: |
| 972 | m_connected = false; |
| 973 | m_establishing = false; |
| 974 | break; |
| 975 | |
| 976 | default: |
| 977 | break; |
| 978 | } |
| 979 | |
| 980 | // Schedule the event |
| 981 | |
| 982 | wxSocketEventFlags flag = 0; |
| 983 | wxUnusedVar(flag); |
| 984 | switch (notification) |
| 985 | { |
| 986 | case GSOCK_INPUT: flag = GSOCK_INPUT_FLAG; break; |
| 987 | case GSOCK_OUTPUT: flag = GSOCK_OUTPUT_FLAG; break; |
| 988 | case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break; |
| 989 | case GSOCK_LOST: flag = GSOCK_LOST_FLAG; break; |
| 990 | default: |
| 991 | wxLogWarning(_("wxSocket: unknown event!.")); |
| 992 | return; |
| 993 | } |
| 994 | |
| 995 | if (((m_eventmask & flag) == flag) && m_notify) |
| 996 | { |
| 997 | if (m_handler) |
| 998 | { |
| 999 | wxSocketEvent event(m_id); |
| 1000 | event.m_event = notification; |
| 1001 | event.m_clientData = m_clientData; |
| 1002 | event.SetEventObject(this); |
| 1003 | |
| 1004 | m_handler->AddPendingEvent(event); |
| 1005 | } |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | void wxSocketBase::Notify(bool notify) |
| 1010 | { |
| 1011 | m_notify = notify; |
| 1012 | } |
| 1013 | |
| 1014 | void wxSocketBase::SetNotify(wxSocketEventFlags flags) |
| 1015 | { |
| 1016 | m_eventmask = flags; |
| 1017 | } |
| 1018 | |
| 1019 | void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id) |
| 1020 | { |
| 1021 | m_handler = &handler; |
| 1022 | m_id = id; |
| 1023 | } |
| 1024 | |
| 1025 | // -------------------------------------------------------------------------- |
| 1026 | // Pushback buffer |
| 1027 | // -------------------------------------------------------------------------- |
| 1028 | |
| 1029 | void wxSocketBase::Pushback(const void *buffer, wxUint32 size) |
| 1030 | { |
| 1031 | if (!size) return; |
| 1032 | |
| 1033 | if (m_unread == NULL) |
| 1034 | m_unread = malloc(size); |
| 1035 | else |
| 1036 | { |
| 1037 | void *tmp; |
| 1038 | |
| 1039 | tmp = malloc(m_unrd_size + size); |
| 1040 | memcpy((char *)tmp + size, m_unread, m_unrd_size); |
| 1041 | free(m_unread); |
| 1042 | |
| 1043 | m_unread = tmp; |
| 1044 | } |
| 1045 | |
| 1046 | m_unrd_size += size; |
| 1047 | |
| 1048 | memcpy(m_unread, buffer, size); |
| 1049 | } |
| 1050 | |
| 1051 | wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek) |
| 1052 | { |
| 1053 | if (!m_unrd_size) |
| 1054 | return 0; |
| 1055 | |
| 1056 | if (size > (m_unrd_size-m_unrd_cur)) |
| 1057 | size = m_unrd_size-m_unrd_cur; |
| 1058 | |
| 1059 | memcpy(buffer, (char *)m_unread + m_unrd_cur, size); |
| 1060 | |
| 1061 | if (!peek) |
| 1062 | { |
| 1063 | m_unrd_cur += size; |
| 1064 | if (m_unrd_size == m_unrd_cur) |
| 1065 | { |
| 1066 | free(m_unread); |
| 1067 | m_unread = NULL; |
| 1068 | m_unrd_size = 0; |
| 1069 | m_unrd_cur = 0; |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | return size; |
| 1074 | } |
| 1075 | |
| 1076 | |
| 1077 | // ========================================================================== |
| 1078 | // wxSocketServer |
| 1079 | // ========================================================================== |
| 1080 | |
| 1081 | // -------------------------------------------------------------------------- |
| 1082 | // Ctor |
| 1083 | // -------------------------------------------------------------------------- |
| 1084 | |
| 1085 | wxSocketServer::wxSocketServer(const wxSockAddress& addr_man, |
| 1086 | wxSocketFlags flags) |
| 1087 | : wxSocketBase(flags, wxSOCKET_SERVER) |
| 1088 | { |
| 1089 | wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") ); |
| 1090 | |
| 1091 | m_socket = GSocket_new(); |
| 1092 | |
| 1093 | if (!m_socket) |
| 1094 | { |
| 1095 | wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") ); |
| 1096 | return; |
| 1097 | } |
| 1098 | |
| 1099 | // Setup the socket as server |
| 1100 | |
| 1101 | m_socket->SetLocal(addr_man.GetAddress()); |
| 1102 | |
| 1103 | if (GetFlags() & wxSOCKET_REUSEADDR) { |
| 1104 | m_socket->SetReusable(); |
| 1105 | } |
| 1106 | if (GetFlags() & wxSOCKET_BROADCAST) { |
| 1107 | m_socket->SetBroadcast(); |
| 1108 | } |
| 1109 | if (GetFlags() & wxSOCKET_NOBIND) { |
| 1110 | m_socket->DontDoBind(); |
| 1111 | } |
| 1112 | |
| 1113 | if (m_socket->SetServer() != GSOCK_NOERROR) |
| 1114 | { |
| 1115 | delete m_socket; |
| 1116 | m_socket = NULL; |
| 1117 | |
| 1118 | wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") ); |
| 1119 | return; |
| 1120 | } |
| 1121 | |
| 1122 | m_socket->SetTimeout(m_timeout * 1000); |
| 1123 | m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | |
| 1124 | GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, |
| 1125 | wx_socket_callback, (char *)this); |
| 1126 | } |
| 1127 | |
| 1128 | // -------------------------------------------------------------------------- |
| 1129 | // Accept |
| 1130 | // -------------------------------------------------------------------------- |
| 1131 | |
| 1132 | bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait) |
| 1133 | { |
| 1134 | GSocket *child_socket; |
| 1135 | |
| 1136 | if (!m_socket) |
| 1137 | return false; |
| 1138 | |
| 1139 | // If wait == false, then the call should be nonblocking. |
| 1140 | // When we are finished, we put the socket to blocking mode |
| 1141 | // again. |
| 1142 | |
| 1143 | if (!wait) |
| 1144 | m_socket->SetNonBlocking(1); |
| 1145 | |
| 1146 | child_socket = m_socket->WaitConnection(); |
| 1147 | |
| 1148 | if (!wait) |
| 1149 | m_socket->SetNonBlocking(0); |
| 1150 | |
| 1151 | if (!child_socket) |
| 1152 | return false; |
| 1153 | |
| 1154 | sock.m_type = wxSOCKET_BASE; |
| 1155 | sock.m_socket = child_socket; |
| 1156 | sock.m_connected = true; |
| 1157 | |
| 1158 | sock.m_socket->SetTimeout(sock.m_timeout * 1000); |
| 1159 | sock.m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | |
| 1160 | GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, |
| 1161 | wx_socket_callback, (char *)&sock); |
| 1162 | |
| 1163 | return true; |
| 1164 | } |
| 1165 | |
| 1166 | wxSocketBase *wxSocketServer::Accept(bool wait) |
| 1167 | { |
| 1168 | wxSocketBase* sock = new wxSocketBase(); |
| 1169 | |
| 1170 | sock->SetFlags(m_flags); |
| 1171 | |
| 1172 | if (!AcceptWith(*sock, wait)) |
| 1173 | { |
| 1174 | sock->Destroy(); |
| 1175 | sock = NULL; |
| 1176 | } |
| 1177 | |
| 1178 | return sock; |
| 1179 | } |
| 1180 | |
| 1181 | bool wxSocketServer::WaitForAccept(long seconds, long milliseconds) |
| 1182 | { |
| 1183 | return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); |
| 1184 | } |
| 1185 | |
| 1186 | bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen) |
| 1187 | { |
| 1188 | wxASSERT_MSG( m_socket, _T("Socket not initialised") ); |
| 1189 | |
| 1190 | if (m_socket->GetSockOpt(level, optname, optval, optlen) |
| 1191 | != GSOCK_NOERROR) |
| 1192 | { |
| 1193 | return false; |
| 1194 | } |
| 1195 | return true; |
| 1196 | } |
| 1197 | |
| 1198 | bool wxSocketBase::SetOption(int level, int optname, const void *optval, |
| 1199 | int optlen) |
| 1200 | { |
| 1201 | wxASSERT_MSG( m_socket, _T("Socket not initialised") ); |
| 1202 | |
| 1203 | if (m_socket->SetSockOpt(level, optname, optval, optlen) |
| 1204 | != GSOCK_NOERROR) |
| 1205 | { |
| 1206 | return false; |
| 1207 | } |
| 1208 | return true; |
| 1209 | } |
| 1210 | |
| 1211 | bool wxSocketBase::SetLocal(wxIPV4address& local) |
| 1212 | { |
| 1213 | GAddress* la = local.GetAddress(); |
| 1214 | |
| 1215 | // If the address is valid, save it for use when we call Connect |
| 1216 | if (la && la->m_addr) |
| 1217 | { |
| 1218 | m_localAddress = local; |
| 1219 | |
| 1220 | return true; |
| 1221 | } |
| 1222 | |
| 1223 | return false; |
| 1224 | } |
| 1225 | |
| 1226 | // ========================================================================== |
| 1227 | // wxSocketClient |
| 1228 | // ========================================================================== |
| 1229 | |
| 1230 | // -------------------------------------------------------------------------- |
| 1231 | // Ctor and dtor |
| 1232 | // -------------------------------------------------------------------------- |
| 1233 | |
| 1234 | wxSocketClient::wxSocketClient(wxSocketFlags flags) |
| 1235 | : wxSocketBase(flags, wxSOCKET_CLIENT) |
| 1236 | { |
| 1237 | } |
| 1238 | |
| 1239 | wxSocketClient::~wxSocketClient() |
| 1240 | { |
| 1241 | } |
| 1242 | |
| 1243 | // -------------------------------------------------------------------------- |
| 1244 | // Connect |
| 1245 | // -------------------------------------------------------------------------- |
| 1246 | |
| 1247 | bool wxSocketClient::DoConnect(wxSockAddress& addr_man, wxSockAddress* local, bool wait) |
| 1248 | { |
| 1249 | GSocketError err; |
| 1250 | |
| 1251 | if (m_socket) |
| 1252 | { |
| 1253 | // Shutdown and destroy the socket |
| 1254 | Close(); |
| 1255 | delete m_socket; |
| 1256 | } |
| 1257 | |
| 1258 | m_socket = GSocket_new(); |
| 1259 | m_connected = false; |
| 1260 | m_establishing = false; |
| 1261 | |
| 1262 | if (!m_socket) |
| 1263 | return false; |
| 1264 | |
| 1265 | m_socket->SetTimeout(m_timeout * 1000); |
| 1266 | m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | |
| 1267 | GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, |
| 1268 | wx_socket_callback, (char *)this); |
| 1269 | |
| 1270 | // If wait == false, then the call should be nonblocking. |
| 1271 | // When we are finished, we put the socket to blocking mode |
| 1272 | // again. |
| 1273 | |
| 1274 | if (!wait) |
| 1275 | m_socket->SetNonBlocking(1); |
| 1276 | |
| 1277 | // Reuse makes sense for clients too, if we are trying to rebind to the same port |
| 1278 | if (GetFlags() & wxSOCKET_REUSEADDR) |
| 1279 | { |
| 1280 | m_socket->SetReusable(); |
| 1281 | } |
| 1282 | if (GetFlags() & wxSOCKET_BROADCAST) |
| 1283 | { |
| 1284 | m_socket->SetBroadcast(); |
| 1285 | } |
| 1286 | if (GetFlags() & wxSOCKET_NOBIND) |
| 1287 | { |
| 1288 | m_socket->DontDoBind(); |
| 1289 | } |
| 1290 | |
| 1291 | // If no local address was passed and one has been set, use the one that was Set |
| 1292 | if (!local && m_localAddress.GetAddress()) |
| 1293 | { |
| 1294 | local = &m_localAddress; |
| 1295 | } |
| 1296 | |
| 1297 | // Bind to the local IP address and port, when provided |
| 1298 | if (local) |
| 1299 | { |
| 1300 | GAddress* la = local->GetAddress(); |
| 1301 | |
| 1302 | if (la && la->m_addr) |
| 1303 | m_socket->SetLocal(la); |
| 1304 | } |
| 1305 | |
| 1306 | m_socket->SetPeer(addr_man.GetAddress()); |
| 1307 | err = m_socket->Connect(GSOCK_STREAMED); |
| 1308 | |
| 1309 | if (!wait) |
| 1310 | m_socket->SetNonBlocking(0); |
| 1311 | |
| 1312 | if (err != GSOCK_NOERROR) |
| 1313 | { |
| 1314 | if (err == GSOCK_WOULDBLOCK) |
| 1315 | m_establishing = true; |
| 1316 | |
| 1317 | return false; |
| 1318 | } |
| 1319 | |
| 1320 | m_connected = true; |
| 1321 | return true; |
| 1322 | } |
| 1323 | |
| 1324 | bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) |
| 1325 | { |
| 1326 | return (DoConnect(addr_man, NULL, wait)); |
| 1327 | } |
| 1328 | |
| 1329 | bool wxSocketClient::Connect(wxSockAddress& addr_man, wxSockAddress& local, bool wait) |
| 1330 | { |
| 1331 | return (DoConnect(addr_man, &local, wait)); |
| 1332 | } |
| 1333 | |
| 1334 | bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds) |
| 1335 | { |
| 1336 | if (m_connected) // Already connected |
| 1337 | return true; |
| 1338 | |
| 1339 | if (!m_establishing || !m_socket) // No connection in progress |
| 1340 | return false; |
| 1341 | |
| 1342 | return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG | |
| 1343 | GSOCK_LOST_FLAG); |
| 1344 | } |
| 1345 | |
| 1346 | // ========================================================================== |
| 1347 | // wxDatagramSocket |
| 1348 | // ========================================================================== |
| 1349 | |
| 1350 | /* NOTE: experimental stuff - might change */ |
| 1351 | |
| 1352 | wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr, |
| 1353 | wxSocketFlags flags ) |
| 1354 | : wxSocketBase( flags, wxSOCKET_DATAGRAM ) |
| 1355 | { |
| 1356 | // Create the socket |
| 1357 | m_socket = GSocket_new(); |
| 1358 | |
| 1359 | if (!m_socket) |
| 1360 | { |
| 1361 | wxFAIL_MSG( _T("datagram socket not new'd") ); |
| 1362 | return; |
| 1363 | } |
| 1364 | // Setup the socket as non connection oriented |
| 1365 | m_socket->SetLocal(addr.GetAddress()); |
| 1366 | if (flags & wxSOCKET_REUSEADDR) |
| 1367 | { |
| 1368 | m_socket->SetReusable(); |
| 1369 | } |
| 1370 | if (GetFlags() & wxSOCKET_BROADCAST) |
| 1371 | { |
| 1372 | m_socket->SetBroadcast(); |
| 1373 | } |
| 1374 | if (GetFlags() & wxSOCKET_NOBIND) |
| 1375 | { |
| 1376 | m_socket->DontDoBind(); |
| 1377 | } |
| 1378 | if ( m_socket->SetNonOriented() != GSOCK_NOERROR ) |
| 1379 | { |
| 1380 | delete m_socket; |
| 1381 | m_socket = NULL; |
| 1382 | return; |
| 1383 | } |
| 1384 | |
| 1385 | // Initialize all stuff |
| 1386 | m_connected = false; |
| 1387 | m_establishing = false; |
| 1388 | m_socket->SetTimeout( m_timeout ); |
| 1389 | m_socket->SetCallback( GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | |
| 1390 | GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, |
| 1391 | wx_socket_callback, (char*)this ); |
| 1392 | } |
| 1393 | |
| 1394 | wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr, |
| 1395 | void* buf, |
| 1396 | wxUint32 nBytes ) |
| 1397 | { |
| 1398 | Read(buf, nBytes); |
| 1399 | GetPeer(addr); |
| 1400 | return (*this); |
| 1401 | } |
| 1402 | |
| 1403 | wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr, |
| 1404 | const void* buf, |
| 1405 | wxUint32 nBytes ) |
| 1406 | { |
| 1407 | wxASSERT_MSG( m_socket, _T("Socket not initialised") ); |
| 1408 | |
| 1409 | m_socket->SetPeer(addr.GetAddress()); |
| 1410 | Write(buf, nBytes); |
| 1411 | return (*this); |
| 1412 | } |
| 1413 | |
| 1414 | // ========================================================================== |
| 1415 | // wxSocketModule |
| 1416 | // ========================================================================== |
| 1417 | |
| 1418 | class wxSocketModule : public wxModule |
| 1419 | { |
| 1420 | public: |
| 1421 | virtual bool OnInit() |
| 1422 | { |
| 1423 | // wxSocketBase will call GSocket_Init() itself when/if needed |
| 1424 | return true; |
| 1425 | } |
| 1426 | |
| 1427 | virtual void OnExit() |
| 1428 | { |
| 1429 | if ( wxSocketBase::IsInitialized() ) |
| 1430 | wxSocketBase::Shutdown(); |
| 1431 | } |
| 1432 | |
| 1433 | private: |
| 1434 | DECLARE_DYNAMIC_CLASS(wxSocketModule) |
| 1435 | }; |
| 1436 | |
| 1437 | IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule) |
| 1438 | |
| 1439 | #endif |
| 1440 | // wxUSE_SOCKETS |