X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/af2fd9613a810695f63db0246df4fc2aff6026f2..6c2cd2a2116c5eff1646e0acb7cad2c887300300:/src/common/socket.cpp diff --git a/src/common/socket.cpp b/src/common/socket.cpp index a5cf4047a7..a53ae44d63 100644 --- a/src/common/socket.cpp +++ b/src/common/socket.cpp @@ -1,324 +1,442 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: socket.cpp +// Name: src/common/socket.cpp // Purpose: Socket handler classes // Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia // Created: April 1997 -// Updated: September 1999 -// Copyright: (C) 1999, 1998, 1997, Guilhem Lavaux -// (C) 1999, Guillermo Rodriguez Garcia +// Copyright: (C) 1999-1997, Guilhem Lavaux +// (C) 2000-1999, Guillermo Rodriguez Garcia // RCS_ID: $Id$ -// License: see wxWindows license +// License: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "socket.h" -#endif +// ========================================================================== +// Declarations +// ========================================================================== // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif #if wxUSE_SOCKETS -///////////////////////////////////////////////////////////////////////////// -// wxWindows headers -///////////////////////////////////////////////////////////////////////////// -#include "wx/defs.h" -#include "wx/object.h" -#include "wx/string.h" -#include "wx/timer.h" -#include "wx/utils.h" -#include "wx/module.h" -#include "wx/log.h" - -#include -#include -#include +#include "wx/socket.h" -///////////////////////////////////////////////////////////////////////////// -// wxSocket headers -///////////////////////////////////////////////////////////////////////////// +#ifndef WX_PRECOMP + #include "wx/object.h" + #include "wx/string.h" + #include "wx/intl.h" + #include "wx/log.h" + #include "wx/event.h" + #include "wx/app.h" + #include "wx/utils.h" + #include "wx/timer.h" + #include "wx/module.h" +#endif + +#include "wx/apptrait.h" #include "wx/sckaddr.h" -#include "wx/socket.h" +#include "wx/stopwatch.h" +#include "wx/thread.h" +#include "wx/evtloop.h" + +// DLL options compatibility check: +#include "wx/build.h" +WX_CHECK_BUILD_OPTIONS("wxNet") + +// -------------------------------------------------------------------------- +// macros and constants +// -------------------------------------------------------------------------- + +// discard buffer +#define MAX_DISCARD_SIZE (10 * 1024) + +// what to do within waits: we have 2 cases: from the main thread itself we +// have to call wxYield() to let the events (including the GUI events and the +// low-level (not wxWidgets) events from GSocket) be processed. From another +// thread it is enough to just call wxThread::Yield() which will give away the +// rest of our time slice: the explanation is that the events will be processed +// by the main thread anyhow, without calling wxYield(), but we don't want to +// eat the CPU time uselessly while sitting in the loop waiting for the data +#if wxUSE_THREADS + #define PROCESS_EVENTS() \ + { \ + if ( wxThread::IsMain() ) \ + wxYield(); \ + else \ + wxThread::Yield(); \ + } +#else // !wxUSE_THREADS + #define PROCESS_EVENTS() wxYield() +#endif // wxUSE_THREADS/!wxUSE_THREADS + +#define wxTRACE_Socket _T("wxSocket") + +// -------------------------------------------------------------------------- +// wxWin macros +// -------------------------------------------------------------------------- -// -------------------------------------------------------------- -// ClassInfos -// -------------------------------------------------------------- -#if !USE_SHARED_LIBRARY IMPLEMENT_CLASS(wxSocketBase, wxObject) IMPLEMENT_CLASS(wxSocketServer, wxSocketBase) IMPLEMENT_CLASS(wxSocketClient, wxSocketBase) +IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase) IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent) -#endif + +// -------------------------------------------------------------------------- +// private classes +// -------------------------------------------------------------------------- class wxSocketState : public wxObject { public: - bool notify_state; - GSocketEventFlags evt_notify_state; - wxSocketBase::wxSockFlags socket_flags; - wxSocketBase::wxSockCbk c_callback; - char *c_callback_data; + wxSocketFlags m_flags; + wxSocketEventFlags m_eventmask; + bool m_notify; + void *m_clientData; public: wxSocketState() : wxObject() {} + + DECLARE_NO_COPY_CLASS(wxSocketState) }; -// -------------------------------------------------------------- -// wxSocketBase ctor and dtor -// -------------------------------------------------------------- - -wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags, - wxSocketBase::wxSockType _type) : - wxEvtHandler(), - m_socket(NULL), m_flags(_flags), m_type(_type), - m_neededreq(0), - m_lcount(0), m_timeout(600), - m_unread(NULL), m_unrd_size(0), m_unrd_cur(0), - m_cbk(NULL), m_cdata(NULL), - m_connected(FALSE), m_establishing(FALSE), - m_notify_state(FALSE), m_id(-1), - m_defering(NO_DEFER), m_error(FALSE), - m_states() +// ============================================================================ +// GSocketManager +// ============================================================================ + +GSocketManager *GSocketManager::ms_manager = NULL; + +/* static */ +void GSocketManager::Set(GSocketManager *manager) { + wxASSERT_MSG( !ms_manager, "too late to set manager now" ); + + ms_manager = manager; } -wxSocketBase::wxSocketBase() : - wxEvtHandler(), - m_socket(NULL), m_flags(WAITALL | SPEED), m_type(SOCK_UNINIT), - m_neededreq(0), - m_lcount(0), m_timeout(600), - m_unread(NULL), m_unrd_size(0), m_unrd_cur(0), - m_cbk(NULL), m_cdata(NULL), - m_connected(FALSE), m_establishing(FALSE), - m_notify_state(FALSE), m_id(-1), - m_defering(NO_DEFER), m_error(FALSE), - m_states() +/* static */ +void GSocketManager::Init() { + wxASSERT_MSG( !ms_manager, "shouldn't be initialized twice" ); + + /* + Details: Initialize() creates a hidden window as a sink for socket + events, such as 'read completed'. wxMSW has only one message loop + for the main thread. If Initialize is called in a secondary thread, + the socket window will be created for the secondary thread, but + since there is no message loop on this thread, it will never + receive events and all socket operations will time out. + BTW, the main thread must not be stopped using sleep or block + on a semaphore (a bad idea in any case) or socket operations + will time out. + + On the Mac side, Initialize() stores a pointer to the CFRunLoop for + the main thread. Because secondary threads do not have run loops, + adding event notifications to the "Current" loop would have no + effect at all, events would never fire. + */ + wxASSERT_MSG( wxIsMainThread(), + "sockets must be initialized from the main thread" ); + + wxAppConsole * const app = wxAppConsole::GetInstance(); + wxCHECK_RET( app, "sockets can't be initialized without wxApp" ); + + ms_manager = app->GetTraits()->GetSocketManager(); } -wxSocketBase::~wxSocketBase() -{ - if (m_unread) - free(m_unread); +// ========================================================================== +// wxSocketBase +// ========================================================================== - // Shutdown and close the socket - Close(); +// -------------------------------------------------------------------------- +// Initialization and shutdown +// -------------------------------------------------------------------------- - // Destroy the GSocket object - if (m_socket) - GSocket_destroy(m_socket); +// FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses +// to m_countInit with a crit section +size_t wxSocketBase::m_countInit = 0; + +bool wxSocketBase::IsInitialized() +{ + return m_countInit > 0; } -bool wxSocketBase::Close() +bool wxSocketBase::Initialize() { - if (m_socket) - { - // Disable callbacks - GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | - GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); + if ( !m_countInit++ ) + { + if ( !GSocket_Init() ) + { + m_countInit--; - // Shutdown the connection - GSocket_Shutdown(m_socket); - m_connected = FALSE; - m_establishing = FALSE; - } + return false; + } + } - return TRUE; + return true; } -// -------------------------------------------------------------- -// wxSocketBase basic IO operations -// -------------------------------------------------------------- - -// GRG: I have made some changes to wxSocket internal event -// system; now, all events (INPUT, OUTPUT, CONNECTION, LOST) -// are always internally monitored; but users will only be -// notified of these events they are interested in. So we -// no longer have to change the event mask with SetNotify() -// in internal functions like DeferRead, DeferWrite, and -// the like. This solves a lot of problems. - -// GRG: I added m_error handling to IO operations. Now, -// wxSocketBase::Error() correctly indicates if the last -// operation from {Read, Write, ReadMsg, WriteMsg, Peek, -// Unread, Discard} failed. Note that now, every function -// that updates m_lcount, also updates m_error. While I -// was at it, also fixed an UGLY bug in ReadMsg. - -class _wxSocketInternalTimer: public wxTimer +void wxSocketBase::Shutdown() { -public: - int *m_state; - unsigned long m_new_val; + // we should be initialized + wxASSERT_MSG( m_countInit > 0, _T("extra call to Shutdown()") ); + if ( --m_countInit == 0 ) + { + GSocket_Cleanup(); + } +} - void Notify() +// -------------------------------------------------------------------------- +// Ctor and dtor +// -------------------------------------------------------------------------- + +void wxSocketBase::Init() +{ + m_socket = NULL; + m_type = wxSOCKET_UNINIT; + + // state + m_flags = 0; + m_connected = + m_establishing = + m_reading = + m_writing = + m_error = false; + m_lcount = 0; + m_timeout = 600; + m_beingDeleted = false; + + // pushback buffer + m_unread = NULL; + m_unrd_size = 0; + m_unrd_cur = 0; + + // events + m_id = wxID_ANY; + m_handler = NULL; + m_clientData = NULL; + m_notify = false; + m_eventmask = 0; + + if ( !IsInitialized() ) { - *m_state = m_new_val; // Change the value + // this Initialize() will be undone by wxSocketModule::OnExit(), all the + // other calls to it should be matched by a call to Shutdown() + Initialize(); } -}; +} + +wxSocketBase::wxSocketBase() +{ + Init(); +} -int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes) +wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type) { - // Timer for timeout - _wxSocketInternalTimer timer; + Init(); - wxASSERT(m_defering == NO_DEFER); + m_flags = flags; + m_type = type; +} - // Set the defering mode to READ. - m_defering = DEFER_READ; +wxSocketBase::~wxSocketBase() +{ + // Just in case the app called Destroy() *and* then deleted + // the socket immediately: don't leave dangling pointers. + wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; + if ( traits ) + traits->RemoveFromPendingDelete(this); - // Set the current buffer. - m_defer_buffer = buffer; - m_defer_nbytes = nbytes; - m_defer_timer = &timer; + // Shutdown and close the socket + if (!m_beingDeleted) + Close(); - timer.m_state = (int *)&m_defer_buffer; - timer.m_new_val = 0; + // Destroy the GSocket object + if (m_socket) + delete m_socket; - timer.Start(m_timeout * 1000, FALSE); + // Free the pushback buffer + if (m_unread) + free(m_unread); +} - // If the socket is readable, call DoDefer for the first time - if (GSocket_Select(m_socket, GSOCK_INPUT_FLAG)) - DoDefer(); +bool wxSocketBase::Destroy() +{ + // Delayed destruction: the socket will be deleted during the next + // idle loop iteration. This ensures that all pending events have + // been processed. + m_beingDeleted = true; - // Wait for buffer completion. - while (m_defer_buffer != NULL) - wxYield(); + // Shutdown and close the socket + Close(); - timer.Stop(); + // Supress events from now on + Notify(false); - // Disable defering mode. - m_defering = NO_DEFER; - m_defer_timer = NULL; + // schedule this object for deletion + wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; + if ( traits ) + { + // let the traits object decide what to do with us + traits->ScheduleForDestroy(this); + } + else // no app or no traits + { + // in wxBase we might have no app object at all, don't leak memory + delete this; + } - // Return the number of bytes read from the socket. - return nbytes-m_defer_nbytes; + return true; } -wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes) -{ - int ret = 1; +// -------------------------------------------------------------------------- +// Basic IO calls +// -------------------------------------------------------------------------- - m_error = FALSE; +// The following IO operations update m_error and m_lcount: +// {Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard} +// +// TODO: Should Connect, Accept and AcceptWith update m_error? - // we try this even if the connection has already been closed. - m_lcount = GetPushback(buffer, nbytes, FALSE); - nbytes -= m_lcount; - buffer += m_lcount; +bool wxSocketBase::Close() +{ + // Interrupt pending waits + InterruptWait(); - if (!m_connected || !m_socket) + if (m_socket) { - // if no data retrieved AND not connected, it is an error. - if (!m_lcount) - m_error = TRUE; + // Disable callbacks + m_socket->UnsetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); - return *this; + // Shutdown the connection + m_socket->Shutdown(); } - // If we have got the whole needed buffer, return immediately - if (!nbytes) - return *this; + m_connected = false; + m_establishing = false; + return true; +} + +wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes) +{ + // Mask read events + m_reading = true; + + m_lcount = _Read(buffer, nbytes); + + // If in wxSOCKET_WAITALL mode, all bytes should have been read. + if (m_flags & wxSOCKET_WAITALL) + m_error = (m_lcount != nbytes); + else + m_error = (m_lcount == 0); + + // Allow read events from now on + m_reading = false; + + return *this; +} + +wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes) +{ + int total; + + // Try the pushback buffer first + total = GetPushback(buffer, nbytes, false); + nbytes -= total; + buffer = (char *)buffer + total; + + // Return now in one of the following cases: + // - the socket is invalid, + // - we got all the data + if ( !m_socket || + !nbytes ) + return total; // Possible combinations (they are checked in this order) - // NOWAIT - // SPEED | WAITALL - // SPEED - // WAITALL - // NONE + // wxSOCKET_NOWAIT + // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK) + // wxSOCKET_BLOCK + // wxSOCKET_NONE // - if (m_flags & NOWAIT) // NOWAIT + int ret; + if (m_flags & wxSOCKET_NOWAIT) { - GSocket_SetNonBlocking(m_socket, TRUE); - ret = GSocket_Read(m_socket, buffer, nbytes); - GSocket_SetNonBlocking(m_socket, FALSE); + m_socket->SetNonBlocking(1); + ret = m_socket->Read((char *)buffer, nbytes); + m_socket->SetNonBlocking(0); if (ret > 0) - m_lcount += ret; + total += ret; } - else if (m_flags & SPEED & WAITALL) // SPEED, WAITALL + else { - while (ret > 0 && nbytes > 0) + bool more = true; + + while (more) { - ret = GSocket_Read(m_socket, buffer, nbytes); - m_lcount += ret; - buffer += ret; - nbytes -= ret; - } - // In case the last call was an error ... - if (ret < 0) - m_lcount ++; - } - else if (m_flags & SPEED) // SPEED, !WAITALL - { - ret = GSocket_Read(m_socket, buffer, nbytes); + if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() ) + break; - if (ret > 0) - m_lcount += ret; - } - else // NONE or WAITALL - { - ret = DeferRead(buffer, nbytes); + ret = m_socket->Read((char *)buffer, nbytes); - if (ret > 0) - m_lcount += ret; - } + if (ret > 0) + { + total += ret; + nbytes -= ret; + buffer = (char *)buffer + ret; + } - // If we have read some data, then it is not an error, even - // when in WAITALL mode, the last low-level IO call might - // have failed. - if (!m_lcount) - m_error = TRUE; + // If we got here and wxSOCKET_WAITALL is not set, we can leave + // now. Otherwise, wait until we recv all the data or until there + // is an error. + // + more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL)); + } + } - return *this; + return total; } -wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes) +wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes) { -#define MAX_BUFSIZE (10 * 1024) - + wxUint32 len, len2, sig, total; + bool error; int old_flags; - unsigned long len, len2, sig; struct { - char sig[4]; - char len[4]; + unsigned char sig[4]; + unsigned char len[4]; } msg; - // sig should be an explicit 32-bit unsigned integer; I've seen - // compilers in which wxUint32 was actually a 16-bit unsigned integer + // Mask read events + m_reading = true; + total = 0; + error = true; old_flags = m_flags; - SetFlags(old_flags | WAITALL); + SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); - Read((char *)&msg, sizeof(msg)); - if (m_lcount != sizeof(msg)) - { - SetFlags(old_flags); - m_error = TRUE; - return *this; - } + if (_Read(&msg, sizeof(msg)) != sizeof(msg)) + goto exit; - sig = msg.sig[0] & 0xff; - sig |= (wxUint32)(msg.sig[1] & 0xff) << 8; - sig |= (wxUint32)(msg.sig[2] & 0xff) << 16; - sig |= (wxUint32)(msg.sig[3] & 0xff) << 24; + sig = (wxUint32)msg.sig[0]; + sig |= (wxUint32)(msg.sig[1] << 8); + sig |= (wxUint32)(msg.sig[2] << 16); + sig |= (wxUint32)(msg.sig[3] << 24); if (sig != 0xfeeddead) { - wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n")); - SetFlags(old_flags); - m_error = TRUE; - return *this; + wxLogWarning(_("wxSocket: invalid signature in ReadMsg.")); + goto exit; } - len = msg.len[0] & 0xff; - len |= (wxUint32)(msg.len[1] & 0xff) << 8; - len |= (wxUint32)(msg.len[2] & 0xff) << 16; - len |= (wxUint32)(msg.len[3] & 0xff) << 24; + len = (wxUint32)msg.len[0]; + len |= (wxUint32)(msg.len[1] << 8); + len |= (wxUint32)(msg.len[2] << 16); + len |= (wxUint32)(msg.len[3] << 24); if (len > nbytes) { @@ -328,660 +446,622 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes) else len2 = 0; - // The "len &&" in the following statements is necessary so - // that we don't attempt to read (and possibly hang the system) - // if the message was zero bytes long - if (len && Read(buffer, len).LastCount() != len) + // Don't attemp to read if the msg was zero bytes long. + if (len) { - SetFlags(old_flags); - m_error = TRUE; - return *this; + total = _Read(buffer, len); + + if (total != len) + goto exit; } if (len2) { - char *discard_buffer = new char[MAX_BUFSIZE]; + char *discard_buffer = new char[MAX_DISCARD_SIZE]; long discard_len; + // NOTE: discarded bytes don't add to m_lcount. do { - discard_len = ((len2 > MAX_BUFSIZE)? MAX_BUFSIZE : len2); - discard_len = Read(discard_buffer, discard_len).LastCount(); - len2 -= discard_len; + discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2); + discard_len = _Read(discard_buffer, (wxUint32)discard_len); + len2 -= (wxUint32)discard_len; } while ((discard_len > 0) && len2); delete [] discard_buffer; if (len2 != 0) - { - SetFlags(old_flags); - m_error = TRUE; - return *this; - } - } - if (Read((char *)&msg, sizeof(msg)).LastCount() != sizeof(msg)) - { - SetFlags(old_flags); - m_error = TRUE; - return *this; + goto exit; } + if (_Read(&msg, sizeof(msg)) != sizeof(msg)) + goto exit; - sig = msg.sig[0] & 0xff; - sig |= (wxUint32)(msg.sig[1] & 0xff) << 8; - sig |= (wxUint32)(msg.sig[2] & 0xff) << 16; - sig |= (wxUint32)(msg.sig[3] & 0xff) << 24; + sig = (wxUint32)msg.sig[0]; + sig |= (wxUint32)(msg.sig[1] << 8); + sig |= (wxUint32)(msg.sig[2] << 16); + sig |= (wxUint32)(msg.sig[3] << 24); if (sig != 0xdeadfeed) { - m_error = TRUE; - wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n")); + wxLogWarning(_("wxSocket: invalid signature in ReadMsg.")); + goto exit; } - SetFlags(old_flags); - return *this; - -#undef MAX_BUFSIZE -} + // everything was OK + error = false; -wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes) -{ - Read(buffer, nbytes); - CreatePushbackAfter(buffer, nbytes); +exit: + m_error = error; + m_lcount = total; + m_reading = false; + SetFlags(old_flags); return *this; } -int wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes) +wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes) { - // Timer for timeout - _wxSocketInternalTimer timer; - - wxASSERT(m_defering == NO_DEFER); + // Mask read events + m_reading = true; - m_defering = DEFER_WRITE; + m_lcount = _Read(buffer, nbytes); + Pushback(buffer, m_lcount); - // Set the current buffer - m_defer_buffer = (char *)buffer; - m_defer_nbytes = nbytes; - m_defer_timer = &timer; + // If in wxSOCKET_WAITALL mode, all bytes should have been read. + if (m_flags & wxSOCKET_WAITALL) + m_error = (m_lcount != nbytes); + else + m_error = (m_lcount == 0); - // Start timer - timer.m_state = (int *)&m_defer_buffer; - timer.m_new_val = 0; + // Allow read events again + m_reading = false; - timer.Start(m_timeout * 1000, FALSE); + return *this; +} - // If the socket is writable, call DoDefer for the first time - if (GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG)) - DoDefer(); +wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes) +{ + // Mask write events + m_writing = true; - // Wait for buffer completion. - while (m_defer_buffer != NULL) - wxYield(); + m_lcount = _Write(buffer, nbytes); - // Stop timer - m_defer_timer = NULL; - timer.Stop(); + // If in wxSOCKET_WAITALL mode, all bytes should have been written. + if (m_flags & wxSOCKET_WAITALL) + m_error = (m_lcount != nbytes); + else + m_error = (m_lcount == 0); - m_defering = NO_DEFER; + // Allow write events again + m_writing = false; - return nbytes-m_defer_nbytes; + return *this; } -wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes) +wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) { - int ret = 1; - - m_lcount = 0; - m_error = FALSE; + wxUint32 total = 0; - if (!m_connected || !m_socket) - { - m_error = TRUE; - return *this; - } + // If the socket is invalid or parameters are ill, return immediately + if (!m_socket || !buffer || !nbytes) + return 0; // Possible combinations (they are checked in this order) - // NOWAIT - // SPEED | WAITALL - // SPEED - // WAITALL - // NONE + // wxSOCKET_NOWAIT + // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK) + // wxSOCKET_BLOCK + // wxSOCKET_NONE // - if (m_flags & NOWAIT) // NOWAIT + int ret; + if (m_flags & wxSOCKET_NOWAIT) { - GSocket_SetNonBlocking(m_socket, TRUE); - ret = GSocket_Write(m_socket, buffer, nbytes); - GSocket_SetNonBlocking(m_socket, FALSE); + m_socket->SetNonBlocking(1); + ret = m_socket->Write((const char *)buffer, nbytes); + m_socket->SetNonBlocking(0); if (ret > 0) - m_lcount += ret; + total = ret; } - else if (m_flags & SPEED & WAITALL) // SPEED, WAITALL + else { - while (ret > 0 && nbytes > 0) + bool more = true; + + while (more) { - ret = GSocket_Write(m_socket, buffer, nbytes); - m_lcount += ret; - buffer += ret; - nbytes -= ret; - } - // In case the last call was an error ... - if (ret < 0) - m_lcount ++; - } - else if (m_flags & SPEED) // SPEED, !WAITALL - { - ret = GSocket_Write(m_socket, buffer, nbytes); + if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() ) + break; - if (ret > 0) - m_lcount += ret; - } - else // NONE or WAITALL - { - ret = DeferWrite(buffer, nbytes); + ret = m_socket->Write((const char *)buffer, nbytes); - if (ret > 0) - m_lcount += ret; - } + if (ret > 0) + { + total += ret; + nbytes -= ret; + buffer = (const char *)buffer + ret; + } - // If we have written some data, then it is not an error, - // even when in WAITALL mode, the last low-level IO call - // might have failed. - if (!m_lcount) - m_error = TRUE; + // If we got here and wxSOCKET_WAITALL is not set, we can leave + // now. Otherwise, wait until we send all the data or until there + // is an error. + // + more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL)); + } + } - return *this; + return total; } -wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes) +wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes) { - int old_flags; - struct { - char sig[4]; - char len[4]; + wxUint32 total; + bool error; + struct + { + unsigned char sig[4]; + unsigned char len[4]; } msg; - // warning about 'cast truncates constant value' -#ifdef __VISUALC__ - #pragma warning(disable: 4310) -#endif // __VISUALC__ + // Mask write events + m_writing = true; - msg.sig[0] = (char) 0xad; - msg.sig[1] = (char) 0xde; - msg.sig[2] = (char) 0xed; - msg.sig[3] = (char) 0xfe; + error = true; + total = 0; + SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); - msg.len[0] = (char) nbytes & 0xff; - msg.len[1] = (char) (nbytes >> 8) & 0xff; - msg.len[2] = (char) (nbytes >> 16) & 0xff; - msg.len[3] = (char) (nbytes >> 24) & 0xff; + msg.sig[0] = (unsigned char) 0xad; + msg.sig[1] = (unsigned char) 0xde; + msg.sig[2] = (unsigned char) 0xed; + msg.sig[3] = (unsigned char) 0xfe; - old_flags = m_flags; - SetFlags(old_flags | WAITALL); + msg.len[0] = (unsigned char) (nbytes & 0xff); + msg.len[1] = (unsigned char) ((nbytes >> 8) & 0xff); + msg.len[2] = (unsigned char) ((nbytes >> 16) & 0xff); + msg.len[3] = (unsigned char) ((nbytes >> 24) & 0xff); - if (Write((char *)&msg, sizeof(msg)).LastCount() < sizeof(msg)) - { - SetFlags(old_flags); - m_error = TRUE; - return *this; - } - if (Write(buffer, nbytes).LastCount() < nbytes) - { - SetFlags(old_flags); - m_error = TRUE; - return *this; - } - - msg.sig[0] = (char) 0xed; - msg.sig[1] = (char) 0xfe; - msg.sig[2] = (char) 0xad; - msg.sig[3] = (char) 0xde; - msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0; + if (_Write(&msg, sizeof(msg)) < sizeof(msg)) + goto exit; - if (Write((char *)&msg, sizeof(msg)).LastCount() < sizeof(msg)) - m_error = TRUE; + total = _Write(buffer, nbytes); - SetFlags(old_flags); - return *this; + if (total < nbytes) + goto exit; -#ifdef __VISUALC__ - #pragma warning(default: 4310) -#endif // __VISUALC__ -} + msg.sig[0] = (unsigned char) 0xed; + msg.sig[1] = (unsigned char) 0xfe; + msg.sig[2] = (unsigned char) 0xad; + msg.sig[3] = (unsigned char) 0xde; + msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0; -wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes) -{ - m_error = FALSE; - m_lcount = 0; + if ((_Write(&msg, sizeof(msg))) < sizeof(msg)) + goto exit; - if (nbytes != 0) - { - CreatePushbackAfter(buffer, nbytes); - m_lcount = nbytes; - } - return *this; -} + // everything was OK + error = false; -bool wxSocketBase::IsData() const -{ - if (!m_socket) - return FALSE; +exit: + m_error = error; + m_lcount = total; + m_writing = false; - return (GSocket_Select(m_socket, GSOCK_INPUT_FLAG)); + return *this; } -// GRG: DoDefer() no longer needs to know which event occured, -// because this was only used to catch LOST events and set -// m_defer_buffer = NULL; this is done in OnRequest() now. - -void wxSocketBase::DoDefer() +wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes) { - int ret; - - if (!m_defer_buffer) - return; - - switch (m_defering) - { - case DEFER_READ: - ret = GSocket_Read(m_socket, m_defer_buffer, m_defer_nbytes); - break; - case DEFER_WRITE: - ret = GSocket_Write(m_socket, m_defer_buffer, m_defer_nbytes); - break; - default: - ret = -1; - break; - } + if (nbytes != 0) + Pushback(buffer, nbytes); - if (ret >= 0) - m_defer_nbytes -= ret; + m_error = false; + m_lcount = nbytes; - // If we are waiting for all bytes to be acquired, keep the defering - // mode enabled. - if ((m_flags & WAITALL) == 0 || m_defer_nbytes == 0 || ret < 0) - { - m_defer_buffer = NULL; - } - else - { - m_defer_buffer += ret; - m_defer_timer->Start(m_timeout * 1000, FALSE); - } + return *this; } -void wxSocketBase::Discard() +wxSocketBase& wxSocketBase::Discard() { -#define MAX_BUFSIZE (10*1024) - - char *my_data = new char[MAX_BUFSIZE]; - wxUint32 recv_size = MAX_BUFSIZE; + char *buffer = new char[MAX_DISCARD_SIZE]; + wxUint32 ret; wxUint32 total = 0; - SaveState(); - SetFlags(NOWAIT); // GRG: SPEED was not needed here! + // Mask read events + m_reading = true; - while (recv_size == MAX_BUFSIZE) + SetFlags(wxSOCKET_NOWAIT); + + do { - recv_size = Read(my_data, MAX_BUFSIZE).LastCount(); - total += recv_size; + ret = _Read(buffer, MAX_DISCARD_SIZE); + total += ret; } + while (ret == MAX_DISCARD_SIZE); - RestoreState(); - delete [] my_data; - + delete[] buffer; m_lcount = total; - m_error = FALSE; - -#undef MAX_BUFSIZE -} - -// -------------------------------------------------------------- -// wxSocketBase get local or peer addresses -// -------------------------------------------------------------- - -bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const -{ - GAddress *peer; - - if (!m_socket) - return FALSE; - - peer = GSocket_GetPeer(m_socket); - addr_man.SetAddress(peer); - GAddress_destroy(peer); - - return TRUE; -} - -bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const -{ - GAddress *local; - - if (!m_socket) - return FALSE; - - local = GSocket_GetLocal(m_socket); - addr_man.SetAddress(local); - GAddress_destroy(local); - - return TRUE; -} - -// -------------------------------------------------------------- -// wxSocketBase save and restore socket state -// -------------------------------------------------------------- - -void wxSocketBase::SaveState() -{ - wxSocketState *state; - - state = new wxSocketState(); - - state->notify_state = m_notify_state; - state->evt_notify_state = m_neededreq; - state->socket_flags = m_flags; - state->c_callback = m_cbk; - state->c_callback_data = m_cdata; - - m_states.Append(state); -} - -void wxSocketBase::RestoreState() -{ - wxNode *node; - wxSocketState *state; - - node = m_states.Last(); - if (!node) - return; + m_error = false; - state = (wxSocketState *)node->Data(); + // Allow read events again + m_reading = false; - SetFlags(state->socket_flags); - m_neededreq = state->evt_notify_state; - m_cbk = state->c_callback; - m_cdata = state->c_callback_data; - Notify(state->notify_state); - - delete node; - delete state; + return *this; } +// -------------------------------------------------------------------------- +// Wait functions +// -------------------------------------------------------------------------- -// -------------------------------------------------------------- -// wxSocketBase Wait functions -// -------------------------------------------------------------- - -// GRG: I have completely rewritten this family of functions -// so that they don't depend on event notifications; instead, -// they poll the socket, using GSocket_Select(), to check for -// the specified combination of event flags, until an event -// occurs or until the timeout ellapses. The polling loop -// calls wxYield(), so this won't block the GUI. +// All Wait functions poll the socket using GSocket_Select() to +// check for the specified combination of conditions, until one +// of these conditions become true, an error occurs, or the +// timeout elapses. The polling loop calls PROCESS_EVENTS(), so +// this won't block the GUI. -bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags flags) +bool wxSocketBase::_Wait(long seconds, + long milliseconds, + wxSocketEventFlags flags) { GSocketEventFlags result; - _wxSocketInternalTimer timer; - long timeout; - int state = -1; + long timeout; // in ms + + // Set this to true to interrupt ongoing waits + m_interrupt = false; // Check for valid socket if (!m_socket) - return FALSE; + return false; - // If it is not a server, it must be connected or establishing connection - if ((m_type != SOCK_SERVER) && (!m_connected && !m_establishing)) - return FALSE; - - // Check for valid timeout value + // Check for valid timeout value. if (seconds != -1) timeout = seconds * 1000 + milliseconds; else timeout = m_timeout * 1000; - // Activate timer - timer.m_state = &state; - timer.m_new_val = 0; - timer.Start(timeout, TRUE); + // check if we are using event loop or not: normally we do in GUI but not in + // console applications but this can be overridden + const bool has_event_loop = wxEventLoop::GetActive() != NULL; - // Active polling (without using events) + // Wait in an active polling loop. // - // NOTE: this duplicates some of the code in OnRequest (lost - // connection and connection establishment handling) but this - // doesn't hurt. It has to be here because the event might - // be a bit delayed, and it has to be in OnRequest as well - // because maybe the WaitXXX functions are not being used. + // NOTE: We duplicate some of the code in OnRequest, but this doesn't + // hurt. It has to be here because the (GSocket) event might arrive + // a bit delayed, and it has to be in OnRequest as well because we + // don't know whether the Wait functions are being used. // - while (state == -1) + // Do this at least once (important if timeout == 0, when + // we are just polling). Also, if just polling, do not yield. + + const wxMilliClock_t time_limit = wxGetLocalTimeMillis() + timeout; + bool done = false; + bool valid_result = false; + + if (!has_event_loop) { - result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG); + // This is used to avoid a busy loop on wxBase - having a select + // timeout of 50 ms per iteration should be enough. + if (timeout > 50) + m_socket->SetTimeout(50); + else + m_socket->SetTimeout(timeout); + } - // Connection lost - if (result & GSOCK_LOST_FLAG) - { - timer.Stop(); - m_defer_buffer = NULL; - Close(); - return TRUE; - } + while (!done) + { + result = m_socket->Select(flags | GSOCK_LOST_FLAG); // Incoming connection (server) or connection established (client) if (result & GSOCK_CONNECTION_FLAG) { - timer.Stop(); - m_connected = TRUE; - m_establishing = FALSE; - return TRUE; + m_connected = true; + m_establishing = false; + valid_result = true; + break; } - // If we are in the middle of a deferred R/W, ignore these. + // Data available or output buffer ready if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG)) { - if (m_defer_buffer == NULL) + valid_result = true; + break; + } + + // Connection lost + if (result & GSOCK_LOST_FLAG) + { + m_connected = false; + m_establishing = false; + valid_result = ((flags & GSOCK_LOST_FLAG) != 0); + break; + } + + // Wait more? + long time_left = wxMilliClockToLong(time_limit - wxGetLocalTimeMillis()); + if ((!timeout) || (time_left <= 0) || (m_interrupt)) + done = true; + else + { + if (has_event_loop) + { + PROCESS_EVENTS(); + } + else { - timer.Stop(); - return TRUE; + // If there's less than 50 ms left, just call select with that timeout. + if (time_left < 50) + m_socket->SetTimeout(time_left); } } - - wxYield(); } - timer.Stop(); - return FALSE; + // Set timeout back to original value (we overwrote it for polling) + if (!has_event_loop) + m_socket->SetTimeout(m_timeout*1000); + + return valid_result; } bool wxSocketBase::Wait(long seconds, long milliseconds) { - return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | - GSOCK_OUTPUT_FLAG | - GSOCK_CONNECTION_FLAG | - GSOCK_LOST_FLAG); + return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | + GSOCK_OUTPUT_FLAG | + GSOCK_CONNECTION_FLAG | + GSOCK_LOST_FLAG); } bool wxSocketBase::WaitForRead(long seconds, long milliseconds) { - return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG); + // Check pushback buffer before entering _Wait + if (m_unread) + return true; + + // Note that GSOCK_INPUT_LOST has to be explicitly passed to + // _Wait because of the semantics of WaitForRead: a return + // value of true means that a GSocket_Read call will return + // immediately, not that there is actually data to read. + + return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | + GSOCK_LOST_FLAG); } + bool wxSocketBase::WaitForWrite(long seconds, long milliseconds) { - return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG); + return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG); } bool wxSocketBase::WaitForLost(long seconds, long milliseconds) { - return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG); + return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG); } -void wxSocketBase::SetTimeout(long seconds) +// -------------------------------------------------------------------------- +// Miscellaneous +// -------------------------------------------------------------------------- + +// +// Get local or peer address +// + +bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const { - m_timeout = seconds; + GAddress *peer; - if (m_socket) - GSocket_SetTimeout(m_socket, m_timeout); -} + if (!m_socket) + return false; -// -------------------------------------------------------------- -// wxSocketBase flags -// -------------------------------------------------------------- + peer = m_socket->GetPeer(); -void wxSocketBase::SetFlags(wxSockFlags _flags) -{ - m_flags = _flags; + // copying a null address would just trigger an assert anyway + + if (!peer) + return false; + + addr_man.SetAddress(peer); + GAddress_destroy(peer); + + return true; } - -wxSocketBase::wxSockFlags wxSocketBase::GetFlags() const + +bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const { - return m_flags; + GAddress *local; + + if (!m_socket) + return false; + + local = m_socket->GetLocal(); + addr_man.SetAddress(local); + GAddress_destroy(local); + + return true; } -// -------------------------------------------------------------- -// wxSocketBase callback management -// -------------------------------------------------------------- +// +// Save and restore socket state +// -wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_) +void wxSocketBase::SaveState() { - wxSockCbk old_cbk = cbk_; + wxSocketState *state; + + state = new wxSocketState(); - m_cbk = cbk_; - return old_cbk; + state->m_flags = m_flags; + state->m_notify = m_notify; + state->m_eventmask = m_eventmask; + state->m_clientData = m_clientData; + + m_states.Append(state); } -char *wxSocketBase::CallbackData(char *data) +void wxSocketBase::RestoreState() { - char *old_data = m_cdata; + wxList::compatibility_iterator node; + wxSocketState *state; - m_cdata = data; - return old_data; -} + node = m_states.GetLast(); + if (!node) + return; -// -------------------------------------------------------------- -// wxSocketBase automatic notifier -// -------------------------------------------------------------- + state = (wxSocketState *)node->GetData(); -static void LINKAGEMODE wx_socket_callback(GSocket *socket, GSocketEvent event, char *cdata) -{ - wxSocketBase *sckobj = (wxSocketBase *)cdata; + m_flags = state->m_flags; + m_notify = state->m_notify; + m_eventmask = state->m_eventmask; + m_clientData = state->m_clientData; - sckobj->OnRequest((wxSocketNotify)event); + m_states.Erase(node); + delete state; } -wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt) +// +// Timeout and flags +// + +void wxSocketBase::SetTimeout(long seconds) { - switch (evt) - { - case GSOCK_INPUT: return GSOCK_INPUT_FLAG; - case GSOCK_OUTPUT: return GSOCK_OUTPUT_FLAG; - case GSOCK_CONNECTION: return GSOCK_CONNECTION_FLAG; - case GSOCK_LOST: return GSOCK_LOST_FLAG; - } - return 0; + m_timeout = seconds; + + if (m_socket) + m_socket->SetTimeout(m_timeout * 1000); } -void wxSocketBase::SetNotify(wxSocketEventFlags flags) +void wxSocketBase::SetFlags(wxSocketFlags flags) { - m_neededreq = flags; + m_flags = flags; } -void wxSocketBase::Notify(bool notify) + +// -------------------------------------------------------------------------- +// Event handling +// -------------------------------------------------------------------------- + +// A note on how events are processed, which is probably the most +// difficult thing to get working right while keeping the same API +// and functionality for all platforms. +// +// When GSocket detects an event, it calls wx_socket_callback, which in +// turn just calls wxSocketBase::OnRequest in the corresponding wxSocket +// object. OnRequest does some housekeeping, and if the event is to be +// propagated to the user, it creates a new wxSocketEvent object and +// posts it. The event is not processed immediately, but delayed with +// AddPendingEvent instead. This is necessary in order to decouple the +// event processing from wx_socket_callback; otherwise, subsequent IO +// calls made from the user event handler would fail, as gtk callbacks +// are not reentrant. +// +// Note that, unlike events, user callbacks (now deprecated) are _not_ +// decoupled from wx_socket_callback and thus they suffer from a variety +// of problems. Avoid them where possible and use events instead. + +extern "C" +void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket), + GSocketEvent notification, + char *cdata) { - m_notify_state = notify; + wxSocketBase *sckobj = (wxSocketBase *)cdata; + + sckobj->OnRequest((wxSocketNotify) notification); } -void wxSocketBase::OnRequest(wxSocketNotify req_evt) +void wxSocketBase::OnRequest(wxSocketNotify notification) { - wxSocketEvent event(m_id); - wxSocketEventFlags flag = EventToNotify(req_evt); - - // NOTE: this duplicates some of the code in _Wait (lost - // connection and connection establishment handling) but - // this doesn't hurt. It has to be here because maybe the - // WaitXXX are not being used, and it has to be in _Wait - // as well because the event might be a bit delayed. - // - switch(req_evt) + // NOTE: We duplicate some of the code in _Wait, but this doesn't + // hurt. It has to be here because the (GSocket) event might arrive + // a bit delayed, and it has to be in _Wait as well because we don't + // know whether the Wait functions are being used. + + switch(notification) { case wxSOCKET_CONNECTION: - m_establishing = FALSE; - m_connected = TRUE; - break; - case wxSOCKET_LOST: - m_defer_buffer = NULL; - Close(); + m_establishing = false; + m_connected = true; break; + + // If we are in the middle of a R/W operation, do not + // propagate events to users. Also, filter 'late' events + // which are no longer valid. + case wxSOCKET_INPUT: + if (m_reading || !m_socket->Select(GSOCK_INPUT_FLAG)) + return; + break; + case wxSOCKET_OUTPUT: - if (m_defer_buffer) - { - // GRG: DoDefer() no longer needs to know which - // event occured, because this was only used to - // catch LOST events and set m_defer_buffer to - // NULL, and this is done in OnRequest() now. - DoDefer(); - // Do not notify to user + if (m_writing || !m_socket->Select(GSOCK_OUTPUT_FLAG)) return; - } + break; + + case wxSOCKET_LOST: + m_connected = false; + m_establishing = false; + break; + + default: break; } - if (((m_neededreq & flag) == flag) && m_notify_state) + // Schedule the event + + wxSocketEventFlags flag = 0; + wxUnusedVar(flag); + switch (notification) { - event.m_socket = this; - event.m_skevt = req_evt; - ProcessEvent(event); - OldOnNotify(req_evt); + case GSOCK_INPUT: flag = GSOCK_INPUT_FLAG; break; + case GSOCK_OUTPUT: flag = GSOCK_OUTPUT_FLAG; break; + case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break; + case GSOCK_LOST: flag = GSOCK_LOST_FLAG; break; + default: + wxLogWarning(_("wxSocket: unknown event!.")); + return; + } - if (m_cbk) - m_cbk(*this, req_evt, m_cdata); + if (((m_eventmask & flag) == flag) && m_notify) + { + if (m_handler) + { + wxSocketEvent event(m_id); + event.m_event = notification; + event.m_clientData = m_clientData; + event.SetEventObject(this); + + m_handler->AddPendingEvent(event); + } } } -void wxSocketBase::OldOnNotify(wxSocketNotify evt) +void wxSocketBase::Notify(bool notify) { + m_notify = notify; + if (m_socket) + m_socket->Notify(notify); } -// -------------------------------------------------------------- -// wxSocketBase set event handler -// -------------------------------------------------------------- - -void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id) +void wxSocketBase::SetNotify(wxSocketEventFlags flags) { - SetNextHandler(&h_evt); - m_id = id; + m_eventmask = flags; } -// -------------------------------------------------------------- -// wxSocketBase pushback library -// -------------------------------------------------------------- - -void wxSocketBase::CreatePushbackAfter(const char *buffer, wxUint32 size) +void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id) { - char *curr_pos; - - if (m_unread != NULL) - m_unread = (char *) realloc(m_unread, m_unrd_size+size); - else - m_unread = (char *) malloc(size); - - curr_pos = m_unread + m_unrd_size; - - memcpy(curr_pos, buffer, size); - m_unrd_size += size; + m_handler = &handler; + m_id = id; } -void wxSocketBase::CreatePushbackBefore(const char *buffer, wxUint32 size) +// -------------------------------------------------------------------------- +// Pushback buffer +// -------------------------------------------------------------------------- + +void wxSocketBase::Pushback(const void *buffer, wxUint32 size) { + if (!size) return; + if (m_unread == NULL) - m_unread = (char *)malloc(size); - else { - char *tmp; + m_unread = malloc(size); + else + { + void *tmp; - tmp = (char *)malloc(m_unrd_size + size); - memcpy(tmp+size, m_unread, m_unrd_size); + tmp = malloc(m_unrd_size + size); + memcpy((char *)tmp + size, m_unread, m_unrd_size); free(m_unread); m_unread = tmp; @@ -992,18 +1072,21 @@ void wxSocketBase::CreatePushbackBefore(const char *buffer, wxUint32 size) memcpy(m_unread, buffer, size); } -wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek) +wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek) { if (!m_unrd_size) return 0; if (size > (m_unrd_size-m_unrd_cur)) size = m_unrd_size-m_unrd_cur; - memcpy(buffer, (m_unread+m_unrd_cur), size); - if (!peek) { + memcpy(buffer, (char *)m_unread + m_unrd_cur, size); + + if (!peek) + { m_unrd_cur += size; - if (m_unrd_size == m_unrd_cur) { + if (m_unrd_size == m_unrd_cur) + { free(m_unread); m_unread = NULL; m_unrd_size = 0; @@ -1014,210 +1097,377 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek) return size; } -// -------------------------------------------------------------- + +// ========================================================================== // wxSocketServer -// -------------------------------------------------------------- +// ========================================================================== -// -------------------------------------------------------------- -// wxSocketServer ctor and dtor -// -------------------------------------------------------------- +// -------------------------------------------------------------------------- +// Ctor +// -------------------------------------------------------------------------- -wxSocketServer::wxSocketServer(wxSockAddress& addr_man, - wxSockFlags flags) : - wxSocketBase(flags, SOCK_SERVER) +wxSocketServer::wxSocketServer(const wxSockAddress& addr_man, + wxSocketFlags flags) + : wxSocketBase(flags, wxSOCKET_SERVER) { - // Create the socket - m_socket = GSocket_new(); + wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") ); - if (!m_socket) - return; + m_socket = GSocket_new(); - // Setup the socket as server - GSocket_SetLocal(m_socket, addr_man.GetAddress()); - if (GSocket_SetServer(m_socket) != GSOCK_NOERROR) - { - GSocket_destroy(m_socket); - m_socket = NULL; - return; - } + if (!m_socket) + { + wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") ); + return; + } - GSocket_SetTimeout(m_socket, m_timeout); - GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | - GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, - wx_socket_callback, (char *)this); + // Setup the socket as server + m_socket->Notify(m_notify); + m_socket->SetLocal(addr_man.GetAddress()); + + if (GetFlags() & wxSOCKET_REUSEADDR) { + m_socket->SetReusable(); + } + if (GetFlags() & wxSOCKET_BROADCAST) { + m_socket->SetBroadcast(); + } + if (GetFlags() & wxSOCKET_NOBIND) { + m_socket->DontDoBind(); + } + + if (m_socket->SetServer() != GSOCK_NOERROR) + { + delete m_socket; + m_socket = NULL; + wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") ); + return; + } + + m_socket->SetTimeout(m_timeout * 1000); + m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, + wx_socket_callback, (char *)this); + + wxLogTrace( wxTRACE_Socket, _T("wxSocketServer on fd %d"), m_socket->m_fd ); } -// -------------------------------------------------------------- -// wxSocketServer Accept -// -------------------------------------------------------------- +// -------------------------------------------------------------------------- +// Accept +// -------------------------------------------------------------------------- bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait) { GSocket *child_socket; if (!m_socket) - return FALSE; + return false; - // GRG: If wait == FALSE, then the call should be nonblocking. + // If wait == false, then the call should be nonblocking. // When we are finished, we put the socket to blocking mode // again. if (!wait) - GSocket_SetNonBlocking(m_socket, TRUE); + m_socket->SetNonBlocking(1); - child_socket = GSocket_WaitConnection(m_socket); + child_socket = m_socket->WaitConnection(); if (!wait) - GSocket_SetNonBlocking(m_socket, FALSE); + m_socket->SetNonBlocking(0); - // GRG: this was not being handled! - if (child_socket == NULL) - return FALSE; + if (!child_socket) + return false; - sock.m_type = SOCK_INTERNAL; + sock.m_type = wxSOCKET_BASE; sock.m_socket = child_socket; - sock.m_connected = TRUE; + sock.m_connected = true; - GSocket_SetTimeout(sock.m_socket, sock.m_timeout); - GSocket_SetCallback(sock.m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + sock.m_socket->SetTimeout(sock.m_timeout * 1000); + sock.m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, wx_socket_callback, (char *)&sock); - return TRUE; + return true; } wxSocketBase *wxSocketServer::Accept(bool wait) { wxSocketBase* sock = new wxSocketBase(); - sock->SetFlags((wxSockFlags)m_flags); + sock->SetFlags(m_flags); if (!AcceptWith(*sock, wait)) - return NULL; + { + sock->Destroy(); + sock = NULL; + } return sock; } bool wxSocketServer::WaitForAccept(long seconds, long milliseconds) { - return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); + return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); } -// -------------------------------------------------------------- +bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen) +{ + wxASSERT_MSG( m_socket, _T("Socket not initialised") ); + + if (m_socket->GetSockOpt(level, optname, optval, optlen) + != GSOCK_NOERROR) + { + return false; + } + return true; +} + +bool wxSocketBase::SetOption(int level, int optname, const void *optval, + int optlen) +{ + wxASSERT_MSG( m_socket, _T("Socket not initialised") ); + + if (m_socket->SetSockOpt(level, optname, optval, optlen) + != GSOCK_NOERROR) + { + return false; + } + return true; +} + +bool wxSocketBase::SetLocal(wxIPV4address& local) +{ + GAddress* la = local.GetAddress(); + + // If the address is valid, save it for use when we call Connect + if (la && la->m_addr) + { + m_localAddress = local; + + return true; + } + + return false; +} + +// ========================================================================== // wxSocketClient -// -------------------------------------------------------------- +// ========================================================================== -// -------------------------------------------------------------- -// wxSocketClient ctor and dtor -// -------------------------------------------------------------- +// -------------------------------------------------------------------------- +// Ctor and dtor +// -------------------------------------------------------------------------- -wxSocketClient::wxSocketClient(wxSockFlags _flags) : - wxSocketBase(_flags, SOCK_CLIENT) +wxSocketClient::wxSocketClient(wxSocketFlags flags) + : wxSocketBase(flags, wxSOCKET_CLIENT) { + m_initialRecvBufferSize = + m_initialSendBufferSize = -1; } wxSocketClient::~wxSocketClient() { } -// -------------------------------------------------------------- -// wxSocketClient Connect functions -// -------------------------------------------------------------- -bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) +// -------------------------------------------------------------------------- +// Connect +// -------------------------------------------------------------------------- + +bool wxSocketClient::DoConnect(wxSockAddress& addr_man, wxSockAddress* local, bool wait) { GSocketError err; - if (IsConnected()) - Close(); - - // This should never happen. if (m_socket) - GSocket_destroy(m_socket); + { + // Shutdown and destroy the socket + Close(); + delete m_socket; + } - // Initialize all socket stuff ... m_socket = GSocket_new(); - m_connected = FALSE; - m_establishing = FALSE; + m_connected = false; + m_establishing = false; if (!m_socket) - return FALSE; + return false; - GSocket_SetTimeout(m_socket, m_timeout); + m_socket->SetTimeout(m_timeout * 1000); + m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, + wx_socket_callback, (char *)this); - // GRG: If wait == FALSE, then the call should be nonblocking. + // If wait == false, then the call should be nonblocking. // When we are finished, we put the socket to blocking mode // again. if (!wait) - GSocket_SetNonBlocking(m_socket, TRUE); + m_socket->SetNonBlocking(1); - GSocket_SetPeer(m_socket, addr_man.GetAddress()); - err = GSocket_Connect(m_socket, GSOCK_STREAMED); - GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | - GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, - wx_socket_callback, (char *)this); + // Reuse makes sense for clients too, if we are trying to rebind to the same port + if (GetFlags() & wxSOCKET_REUSEADDR) + { + m_socket->SetReusable(); + } + if (GetFlags() & wxSOCKET_BROADCAST) + { + m_socket->SetBroadcast(); + } + if (GetFlags() & wxSOCKET_NOBIND) + { + m_socket->DontDoBind(); + } + + // If no local address was passed and one has been set, use the one that was Set + if (!local && m_localAddress.GetAddress()) + { + local = &m_localAddress; + } + + // Bind to the local IP address and port, when provided + if (local) + { + GAddress* la = local->GetAddress(); + + if (la && la->m_addr) + m_socket->SetLocal(la); + } + +#if defined(__WXMSW__) || defined(__WXGTK__) + m_socket->SetInitialSocketBuffers(m_initialRecvBufferSize, m_initialSendBufferSize); +#endif + + m_socket->SetPeer(addr_man.GetAddress()); + err = m_socket->Connect(GSOCK_STREAMED); + + //this will register for callbacks - must be called after m_socket->m_fd was initialized + m_socket->Notify(m_notify); if (!wait) - GSocket_SetNonBlocking(m_socket, FALSE); + m_socket->SetNonBlocking(0); if (err != GSOCK_NOERROR) { if (err == GSOCK_WOULDBLOCK) - m_establishing = TRUE; + m_establishing = true; - return FALSE; + return false; } - m_connected = TRUE; - return TRUE; + m_connected = true; + return true; +} + +bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) +{ + return (DoConnect(addr_man, NULL, wait)); +} + +bool wxSocketClient::Connect(wxSockAddress& addr_man, wxSockAddress& local, bool wait) +{ + return (DoConnect(addr_man, &local, wait)); } bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds) { - if (m_connected) // Already connected - return TRUE; + if (m_connected) // Already connected + return true; - if (!m_establishing || !m_socket) // No connection in progress - return FALSE; + if (!m_establishing || !m_socket) // No connection in progress + return false; - return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); + return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG | + GSOCK_LOST_FLAG); } -// -------------------------------------------------------------- -// wxSocketEvent -// -------------------------------------------------------------- +// ========================================================================== +// wxDatagramSocket +// ========================================================================== -wxSocketEvent::wxSocketEvent(int id) - : wxEvent(id) +/* NOTE: experimental stuff - might change */ + +wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr, + wxSocketFlags flags ) + : wxSocketBase( flags, wxSOCKET_DATAGRAM ) { - wxEventType type = (wxEventType)wxEVT_SOCKET; + // Create the socket + m_socket = GSocket_new(); - SetEventType(type); + if (!m_socket) + { + wxFAIL_MSG( _T("datagram socket not new'd") ); + return; + } + m_socket->Notify(m_notify); + // Setup the socket as non connection oriented + m_socket->SetLocal(addr.GetAddress()); + if (flags & wxSOCKET_REUSEADDR) + { + m_socket->SetReusable(); + } + if (GetFlags() & wxSOCKET_BROADCAST) + { + m_socket->SetBroadcast(); + } + if (GetFlags() & wxSOCKET_NOBIND) + { + m_socket->DontDoBind(); + } + if ( m_socket->SetNonOriented() != GSOCK_NOERROR ) + { + delete m_socket; + m_socket = NULL; + return; + } + + // Initialize all stuff + m_connected = false; + m_establishing = false; + m_socket->SetTimeout( m_timeout ); + m_socket->SetCallback( GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, + wx_socket_callback, (char*)this ); } -void wxSocketEvent::CopyObject(wxObject& obj_d) const +wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr, + void* buf, + wxUint32 nBytes ) { - wxSocketEvent *event = (wxSocketEvent *)&obj_d; + Read(buf, nBytes); + GetPeer(addr); + return (*this); +} - wxEvent::CopyObject(obj_d); +wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr, + const void* buf, + wxUint32 nBytes ) +{ + wxASSERT_MSG( m_socket, _T("Socket not initialised") ); - event->m_skevt = m_skevt; - event->m_socket = m_socket; + m_socket->SetPeer(addr.GetAddress()); + Write(buf, nBytes); + return (*this); } -// -------------------------------------------------------------------------- +// ========================================================================== // wxSocketModule -// -------------------------------------------------------------------------- -class WXDLLEXPORT wxSocketModule: public wxModule { - DECLARE_DYNAMIC_CLASS(wxSocketModule) - public: - bool OnInit() { - return GSocket_Init(); - } - void OnExit() { - GSocket_Cleanup(); - } +// ========================================================================== + +class wxSocketModule : public wxModule +{ +public: + virtual bool OnInit() + { + // wxSocketBase will call GSocket_Init() itself when/if needed + return true; + } + + virtual void OnExit() + { + if ( wxSocketBase::IsInitialized() ) + wxSocketBase::Shutdown(); + } + +private: + DECLARE_DYNAMIC_CLASS(wxSocketModule) }; IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)