X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/aa6d970619f8dd5aa0d157953ad431acfde89963..432efcb004c8a7f4997acab1aa044c78226c36bb:/src/common/socket.cpp diff --git a/src/common/socket.cpp b/src/common/socket.cpp index 7c13039777..28a929198c 100644 --- a/src/common/socket.cpp +++ b/src/common/socket.cpp @@ -1,771 +1,1045 @@ -//////////////////////////////////////////////////////////////////////////////// -// Name: socket.cpp +///////////////////////////////////////////////////////////////////////////// +// Name: src/common/socket.cpp // Purpose: Socket handler classes -// Authors: Guilhem Lavaux +// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia // Created: April 1997 -// Updated: July 1999 -// Copyright: (C) 1999, 1998, 1997, Guilhem Lavaux +// Copyright: (C) 1999-1997, Guilhem Lavaux +// (C) 2000-1999, Guillermo Rodriguez Garcia // RCS_ID: $Id$ -// License: see wxWindows license -//////////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "socket.h" -#endif +// License: wxWindows licence +///////////////////////////////////////////////////////////////////////////// + +// ========================================================================== +// 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 -#include -#include -#include -#include -#include +#include "wx/socket.h" + +#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 -#include -#include +#include "wx/apptrait.h" + +#include "wx/sckaddr.h" +#include "wx/datetime.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 +// -------------------------------------------------------------------------- -///////////////////////////////////////////////////////////////////////////// -// wxSocket headers -///////////////////////////////////////////////////////////////////////////// -#include -#include -#include - -// -------------------------------------------------------------- -// 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 -class wxSocketState : public wxObject { +// -------------------------------------------------------------------------- +// 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 CONSTRUCTOR --------------------------- -// -------------------------------------------------------------- -wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags, - wxSocketBase::wxSockType _type) : - wxEvtHandler(), - m_socket(NULL), m_flags(_flags), m_type(_type), - m_neededreq(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG), - 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_notify_state(FALSE), m_id(-1), - m_defering(NO_DEFER), - m_states() -{ -} +// ========================================================================== +// wxSocketBase +// ========================================================================== + +// -------------------------------------------------------------------------- +// Initialization and shutdown +// -------------------------------------------------------------------------- -wxSocketBase::wxSocketBase() : - wxEvtHandler(), - m_socket(NULL), m_flags(SPEED | WAITALL), m_type(SOCK_UNINIT), - m_neededreq(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG), - 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_notify_state(FALSE), m_id(-1), - m_defering(NO_DEFER), - m_states() +// 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; } -// -------------------------------------------------------------- -// wxSocketBase destructor -// -------------------------------------------------------------- - -wxSocketBase::~wxSocketBase() +bool wxSocketBase::Initialize() { - if (m_unread) - free(m_unread); + if ( !m_countInit++ ) + { + /* + 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(), + wxT("Call wxSocketBase::Initialize() from the main thread first!")); + + wxAppTraits *traits = wxAppConsole::GetInstance() ? + wxAppConsole::GetInstance()->GetTraits() : NULL; + GSocketGUIFunctionsTable *functions = + traits ? traits->GetSocketGUIFunctionsTable() : NULL; + GSocket_SetGUIFunctions(functions); + + if ( !GSocket_Init() ) + { + m_countInit--; + + return false; + } + } - // At last, close the file descriptor. - Close(); + return true; +} - if (m_socket) - GSocket_destroy(m_socket); +void wxSocketBase::Shutdown() +{ + // we should be initialized + wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") ); + if ( --m_countInit == 0 ) + { + GSocket_Cleanup(); + } } -bool wxSocketBase::Close() +// -------------------------------------------------------------------------- +// Ctor and dtor +// -------------------------------------------------------------------------- + +void wxSocketBase::Init() { - if (m_socket) + 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() ) { - if (m_notify_state == TRUE) - Notify(FALSE); - - // Shutdown the connection. - GSocket_Shutdown(m_socket); - m_connected = FALSE; + // this Initialize() will be undone by wxSocketModule::OnExit(), all the + // other calls to it should be matched by a call to Shutdown() + Initialize(); } +} - return TRUE; +wxSocketBase::wxSocketBase() +{ + Init(); } -// -------------------------------------------------------------- -// wxSocketBase base IO function -// -------------------------------------------------------------- -class _wxSocketInternalTimer: public wxTimer { - public: - int *m_state; - unsigned long m_new_val; +wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type) +{ + Init(); - void Notify() - { - *m_state = m_new_val; // Change the value - } -}; + m_flags = flags; + m_type = type; +} -int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes) +wxSocketBase::~wxSocketBase() { - wxSocketEventFlags old_event_flags; - bool old_notify_state; - // Timer for timeout - _wxSocketInternalTimer timer; + // 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); + + // Shutdown and close the socket + if (!m_beingDeleted) + Close(); + + // Destroy the GSocket object + if (m_socket) + delete m_socket; - wxASSERT(m_defering == NO_DEFER); + // Free the pushback buffer + if (m_unread) + free(m_unread); +} - // Set the defering mode to READ. - m_defering = DEFER_READ; +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; - // Save the old state. - old_event_flags = NeededReq(); - old_notify_state = m_notify_state; + // Shutdown and close the socket + Close(); - // Set the new async flag. - SetNotify(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG); - Notify(TRUE); + // Supress events from now on + Notify(false); - // Set the current buffer. - m_defer_buffer = buffer; - m_defer_nbytes = nbytes; - m_defer_timer = &timer; + // 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; + } - timer.m_state = (int *)&m_defer_buffer; - timer.m_new_val = 0; + return true; +} - timer.Start(m_timeout * 1000, FALSE); +// -------------------------------------------------------------------------- +// Basic IO calls +// -------------------------------------------------------------------------- - // Wait for buffer completion. - while (m_defer_buffer != NULL) - wxYield(); +// 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? - timer.Stop(); +bool wxSocketBase::Close() +{ + // Interrupt pending waits + InterruptWait(); - // Restore the old state. - Notify(old_notify_state); - SetNotify(old_event_flags); + if (m_socket) + { + // Disable callbacks + m_socket->UnsetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); - // Disable defering mode. - m_defering = NO_DEFER; - m_defer_timer = NULL; + // Shutdown the connection + m_socket->Shutdown(); + } - // Return the number of bytes read from the socket. - return nbytes-m_defer_nbytes; + m_connected = false; + m_establishing = false; + return true; } -wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes) +wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes) { - int ret = 1; + // 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); - m_lcount = GetPushback(buffer, nbytes, FALSE); - nbytes -= m_lcount; - buffer += m_lcount; + // Allow read events from now on + m_reading = false; - if (!m_connected) - return *this; + 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) + // wxSOCKET_NOWAIT + // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK) + // wxSOCKET_BLOCK + // wxSOCKET_NONE + // + int ret; + if (m_flags & wxSOCKET_NOWAIT) + { + m_socket->SetNonBlocking(1); + ret = m_socket->Read((char *)buffer, nbytes); + m_socket->SetNonBlocking(0); - // If we have got the whole needed buffer or if we don't want to - // wait then it returns immediately. - if (!nbytes || (m_lcount && !(m_flags & WAITALL)) ) { - return *this; + if (ret > 0) + total += ret; } + else + { + bool more = true; - if ((m_flags & SPEED) != 0) { + while (more) + { + if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() ) + break; + + ret = m_socket->Read((char *)buffer, nbytes); - if ((m_flags & WAITALL) != 0) { - while (ret > 0 && nbytes > 0) { - ret = GSocket_Read(m_socket, buffer, nbytes); - m_lcount += ret; - buffer += ret; + if (ret > 0) + { + total += ret; nbytes -= ret; + buffer = (char *)buffer + ret; } - // In case the last call was an error ... - if (ret < 0) - m_lcount ++; - } else { - ret = GSocket_Read(m_socket, buffer, nbytes); - if (ret > 0) - m_lcount += ret; - } - - } else { - ret = DeferRead(buffer, nbytes); - if (ret > 0) - m_lcount += ret; + // 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) { - unsigned long len, len2, sig; - struct { - char sig[4]; - char len[4]; + wxUint32 len, len2, sig, total; + bool error; + int old_flags; + struct + { + 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((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); - Read((char *)&msg, sizeof(msg)); - if (m_lcount != sizeof(msg)) - 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) - return *this; - 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; - - // len2 is incorrectly computed in the original; this sequence is - // the fix - if (len > nbytes) { + { + wxLogWarning(_("wxSocket: invalid signature in ReadMsg.")); + goto exit; + } + + 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) + { len2 = len - nbytes; len = nbytes; } else len2 = 0; - // the "len &&" in the following statement 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) - return *this; - if (len2 && (Read(NULL, len2).LastCount() != len2)) - return *this; - if (Read((char *)&msg, sizeof(msg)).LastCount() != sizeof(msg)) - return *this; - - 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; - -// ERROR - if (sig != 0xdeadfeed) - wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n")); - - return *this; -} - -wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes) -{ - Read(buffer, nbytes); - CreatePushbackAfter(buffer, nbytes); - - return *this; -} - -int wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes) -{ - wxSocketEventFlags old_event_flags; - bool old_notify_state; - // Timer for timeout - _wxSocketInternalTimer timer; - - wxASSERT(m_defering == NO_DEFER); - - m_defering = DEFER_WRITE; - - // Save the old state - old_event_flags = NeededReq(); - old_notify_state = m_notify_state; + // Don't attemp to read if the msg was zero bytes long. + if (len) + { + total = _Read(buffer, len); - SetNotify(GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG); - Notify(TRUE); + if (total != len) + goto exit; + } + if (len2) + { + char *discard_buffer = new char[MAX_DISCARD_SIZE]; + long discard_len; - // Set the current buffer - m_defer_buffer = (char *)buffer; - m_defer_nbytes = nbytes; + // NOTE: discarded bytes don't add to m_lcount. + do + { + 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); - // Start timer - timer.m_state = (int *)&m_defer_buffer; - timer.m_new_val = 0; + delete [] discard_buffer; - m_defer_timer = &timer; - timer.Start(m_timeout * 1000, FALSE); + if (len2 != 0) + goto exit; + } + if (_Read(&msg, sizeof(msg)) != sizeof(msg)) + goto exit; - while (m_defer_buffer != NULL) - wxYield(); + sig = (wxUint32)msg.sig[0]; + sig |= (wxUint32)(msg.sig[1] << 8); + sig |= (wxUint32)(msg.sig[2] << 16); + sig |= (wxUint32)(msg.sig[3] << 24); - // Stop timer - m_defer_timer = NULL; - timer.Stop(); + if (sig != 0xdeadfeed) + { + wxLogWarning(_("wxSocket: invalid signature in ReadMsg.")); + goto exit; + } - // Restore the old state - Notify(old_notify_state); - SetNotify(old_event_flags); + // everything was OK + error = false; - m_defering = NO_DEFER; +exit: + m_error = error; + m_lcount = total; + m_reading = false; + SetFlags(old_flags); - return nbytes-m_defer_nbytes; + return *this; } -wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes) +wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes) { - int ret; + // Mask read events + m_reading = true; + + m_lcount = _Read(buffer, nbytes); + Pushback(buffer, m_lcount); - if ((m_flags & SPEED) != 0) - ret = GSocket_Write(m_socket, buffer, nbytes); + // If in wxSOCKET_WAITALL mode, all bytes should have been read. + if (m_flags & wxSOCKET_WAITALL) + m_error = (m_lcount != nbytes); else - ret = DeferWrite(buffer, nbytes); + m_error = (m_lcount == 0); - if (ret != -1) - m_lcount += ret; + // Allow read events again + m_reading = false; return *this; } -wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes) +wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes) { - struct { - char sig[4]; - char len[4]; - } msg; + // Mask write events + m_writing = true; - // warning about 'cast truncates constant value' -#ifdef __VISUALC__ - #pragma warning(disable: 4310) -#endif // __VISUALC__ - - msg.sig[0] = (char) 0xad; - msg.sig[1] = (char) 0xde; - msg.sig[2] = (char) 0xed; - msg.sig[3] = (char) 0xfe; - - 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; - - if (Write((char *)&msg, sizeof(msg)).LastCount() < sizeof(msg)) - return *this; - if (Write(buffer, nbytes).LastCount() < nbytes) - 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; - Write((char *)&msg, sizeof(msg)); + m_lcount = _Write(buffer, nbytes); - return *this; + // 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); -#ifdef __VISUALC__ - #pragma warning(default: 4310) -#endif // __VISUALC__ -} + // Allow write events again + m_writing = false; -wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes) -{ - m_lcount = 0; - if (nbytes != 0) { - CreatePushbackAfter(buffer, nbytes); - m_lcount = nbytes; - } return *this; } -bool wxSocketBase::IsData() const +wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) { - if (!m_socket) - return FALSE; + wxUint32 total = 0; - return (GSocket_DataAvailable(m_socket)); -} + // If the socket is invalid or parameters are ill, return immediately + if (!m_socket || !buffer || !nbytes) + return 0; -void wxSocketBase::DoDefer(wxSocketNotify req_evt) -{ + // Possible combinations (they are checked in this order) + // wxSOCKET_NOWAIT + // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK) + // wxSOCKET_BLOCK + // wxSOCKET_NONE + // int ret; + if (m_flags & wxSOCKET_NOWAIT) + { + m_socket->SetNonBlocking(1); + ret = m_socket->Write((const char *)buffer, nbytes); + m_socket->SetNonBlocking(0); - if (req_evt == wxSOCKET_LOST) { - Close(); - m_defer_buffer = NULL; - 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 (ret > 0) + total = ret; } + else + { + bool more = true; + + while (more) + { + if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() ) + break; - m_defer_nbytes -= ret; + ret = m_socket->Write((const char *)buffer, nbytes); - if (ret < 0) - m_defer_nbytes++; + if (ret > 0) + { + total += ret; + nbytes -= ret; + buffer = (const char *)buffer + ret; + } - // If we are waiting for all bytes to be acquired, keep the defering modei - // enabled. - if ((m_flags & WAITALL) == 0 || m_defer_nbytes == 0 || ret < 0) { - m_defer_buffer = NULL; - Notify(FALSE); - } else { - m_defer_buffer += ret; - m_defer_timer->Start(m_timeout * 1000, FALSE); + // 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 total; } -// --------------------------------------------------------------------- -// --------- wxSocketBase Discard(): deletes all byte in the input queue -// --------------------------------------------------------------------- -void wxSocketBase::Discard() +wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes) { -#define MAX_BUFSIZE (10*1024) - char *my_data = new char[MAX_BUFSIZE]; - wxUint32 recv_size = MAX_BUFSIZE; - - SaveState(); - SetFlags(NOWAIT | SPEED); - - while (recv_size == MAX_BUFSIZE) + wxUint32 total; + bool error; + struct { - recv_size = Read(my_data, MAX_BUFSIZE).LastCount(); - } + unsigned char sig[4]; + unsigned char len[4]; + } msg; - RestoreState(); - delete [] my_data; + // Mask write events + m_writing = true; -#undef MAX_BUFSIZE -} + error = true; + total = 0; + SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); -// -------------------------------------------------------------- -// wxSocketBase socket info functions -// -------------------------------------------------------------- + msg.sig[0] = (unsigned char) 0xad; + msg.sig[1] = (unsigned char) 0xde; + msg.sig[2] = (unsigned char) 0xed; + msg.sig[3] = (unsigned char) 0xfe; -bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const -{ - GAddress *peer; + 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 (!m_socket) - return FALSE; + if (_Write(&msg, sizeof(msg)) < sizeof(msg)) + goto exit; - peer = GSocket_GetPeer(m_socket); - addr_man.SetAddress(peer); - GAddress_destroy(peer); + total = _Write(buffer, nbytes); - return TRUE; -} + if (total < nbytes) + goto exit; -bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const -{ - GAddress *local; + 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; - if (!m_socket) - return FALSE; + if ((_Write(&msg, sizeof(msg))) < sizeof(msg)) + goto exit; - local = GSocket_GetLocal(m_socket); - addr_man.SetAddress(local); - GAddress_destroy(local); + // everything was OK + error = false; - return TRUE; -} +exit: + m_error = error; + m_lcount = total; + m_writing = false; -// -------------------------------------------------------------- -// wxSocketBase wait functions -// -------------------------------------------------------------- + return *this; +} -void wxSocketBase::SaveState() +wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes) { - wxSocketState *state; - - state = new wxSocketState(); + if (nbytes != 0) + Pushback(buffer, nbytes); - 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_error = false; + m_lcount = nbytes; - m_states.Append(state); + return *this; } -void wxSocketBase::RestoreState() +wxSocketBase& wxSocketBase::Discard() { - wxNode *node; - wxSocketState *state; - - node = m_states.Last(); - if (!node) - return; + char *buffer = new char[MAX_DISCARD_SIZE]; + wxUint32 ret; + wxUint32 total = 0; - state = (wxSocketState *)node->Data(); + // Mask read events + m_reading = true; - 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); + SetFlags(wxSOCKET_NOWAIT); - delete node; - delete state; -} + do + { + ret = _Read(buffer, MAX_DISCARD_SIZE); + total += ret; + } + while (ret == MAX_DISCARD_SIZE); -// -------------------------------------------------------------- -// --------- wxSocketBase callback functions -------------------- -// -------------------------------------------------------------- + delete[] buffer; + m_lcount = total; + m_error = false; -wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_) -{ - wxSockCbk old_cbk = cbk_; + // Allow read events again + m_reading = false; - m_cbk = cbk_; - return old_cbk; + return *this; } -char *wxSocketBase::CallbackData(char *data) -{ - char *old_data = m_cdata; - - m_cdata = data; - return old_data; -} +// -------------------------------------------------------------------------- +// Wait functions +// -------------------------------------------------------------------------- -// -------------------------------------------------------------- -// --------- wxSocketBase wait functions ------------------------ -// -------------------------------------------------------------- +// 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. -static void wx_socket_wait(GSocket *socket, GSocketEvent event, char *cdata) +bool wxSocketBase::_Wait(long seconds, + long milliseconds, + wxSocketEventFlags flags) { - int *state = (int *)cdata; + GSocketEventFlags result; + long timeout; - *state = event; -} + // Set this to true to interrupt ongoing waits + m_interrupt = false; -bool wxSocketBase::_Wait(long seconds, long milliseconds, int type) -{ - bool old_notify_state = m_notify_state; - int state = -1; - _wxSocketInternalTimer timer; + // Check for valid socket + if (!m_socket) + return false; - if (!m_connected || !m_socket) - return FALSE; + // Check for valid timeout value. + if (seconds != -1) + timeout = seconds * 1000 + milliseconds; + else + timeout = m_timeout * 1000; + + bool has_event_loop = wxTheApp->GetTraits() ? (wxTheApp->GetTraits()->GetSocketGUIFunctionsTable() ? true : false) : false; + + // Wait in an active polling loop. + // + // 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. + // + // Do this at least once (important if timeout == 0, when + // we are just polling). Also, if just polling, do not yield. + + wxDateTime current_time = wxDateTime::UNow(); + unsigned int time_limit = (current_time.GetTicks() * 1000) + current_time.GetMillisecond() + timeout; + bool done = false; + bool valid_result = false; + + if (!has_event_loop) + { + // 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); + } - // Set the variable to change - timer.m_state = &state; - timer.m_new_val = GSOCK_MAX_EVENT; + while (!done) + { + result = m_socket->Select(flags | GSOCK_LOST_FLAG); - // Disable the previous handler - Notify(FALSE); + // Incoming connection (server) or connection established (client) + if (result & GSOCK_CONNECTION_FLAG) + { + m_connected = true; + m_establishing = false; + valid_result = true; + break; + } - // Set the timeout - timer.Start(seconds * 1000 + milliseconds, TRUE); - GSocket_SetCallback(m_socket, type, wx_socket_wait, (char *)&state); + // Data available or output buffer ready + if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG)) + { + valid_result = true; + break; + } - while (state == -1) - wxYield(); + // Connection lost + if (result & GSOCK_LOST_FLAG) + { + m_connected = false; + m_establishing = false; + valid_result = ((flags & GSOCK_LOST_FLAG) != 0); + break; + } - GSocket_UnsetCallback(m_socket, type); - timer.Stop(); + // Wait more? + current_time = wxDateTime::UNow(); + int time_left = time_limit - ((current_time.GetTicks() * 1000) + current_time.GetMillisecond()); + if ((!timeout) || (time_left <= 0) || (m_interrupt)) + done = true; + else + { + if (has_event_loop) + { + PROCESS_EVENTS(); + } + else + { + // If there's less than 50 ms left, just call select with that timeout. + if (time_left < 50) + m_socket->SetTimeout(time_left); + } + } + } - // Notify will restore automatically the old GSocket flags - Notify(old_notify_state); + // Set timeout back to original value (we overwrote it for polling) + if (!has_event_loop) + m_socket->SetTimeout(m_timeout*1000); - return (state != GSOCK_MAX_EVENT); + 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 | GSOCK_LOST_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 | GSOCK_LOST_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); } -// -------------------------------------------------------------- -// --------- wxSocketBase callback management ------------------- -// -------------------------------------------------------------- +// -------------------------------------------------------------------------- +// Miscellaneous +// -------------------------------------------------------------------------- + +// +// Get local or peer address +// -wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt) +bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const { - 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; - default: - return 0; - } - return 0; + GAddress *peer; + + if (!m_socket) + return false; + + peer = m_socket->GetPeer(); + + // copying a null address would just trigger an assert anyway + + if (!peer) + return false; + + addr_man.SetAddress(peer); + GAddress_destroy(peer); + + return true; } -void wxSocketBase::SetFlags(wxSockFlags _flags) +bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const { - m_flags = _flags; + GAddress *local; + + if (!m_socket) + return false; + + local = m_socket->GetLocal(); + addr_man.SetAddress(local); + GAddress_destroy(local); + + return true; } -wxSocketBase::wxSockFlags wxSocketBase::GetFlags() const +// +// Save and restore socket state +// + +void wxSocketBase::SaveState() { - return m_flags; + wxSocketState *state; + + state = new wxSocketState(); + + state->m_flags = m_flags; + state->m_notify = m_notify; + state->m_eventmask = m_eventmask; + state->m_clientData = m_clientData; + + m_states.Append(state); } -void wxSocketBase::SetNotify(wxSocketEventFlags flags) +void wxSocketBase::RestoreState() { - /* Check if server */ - if (m_type != SOCK_SERVER) - flags &= ~GSOCK_CONNECTION_FLAG; + wxList::compatibility_iterator node; + wxSocketState *state; - m_neededreq = flags; - if (m_neededreq == 0) - Notify(FALSE); - else - Notify(m_notify_state); + node = m_states.GetLast(); + if (!node) + return; + + state = (wxSocketState *)node->GetData(); + + m_flags = state->m_flags; + m_notify = state->m_notify; + m_eventmask = state->m_eventmask; + m_clientData = state->m_clientData; + + m_states.Erase(node); + delete state; } -// -------------------------------------------------------------- -// Automatic notifier -// -------------------------------------------------------------- +// +// Timeout and flags +// -static void wx_socket_fallback(GSocket *socket, GSocketEvent event, char *cdata) +void wxSocketBase::SetTimeout(long seconds) { - wxSocketBase *sckobj = (wxSocketBase *)cdata; + m_timeout = seconds; - sckobj->OnRequest((wxSocketNotify)event); + if (m_socket) + m_socket->SetTimeout(m_timeout * 1000); } -void wxSocketBase::Notify(bool notify) +void wxSocketBase::SetFlags(wxSocketFlags flags) { - m_notify_state = notify; - if (!m_socket) - return; + m_flags = flags; +} + + +// -------------------------------------------------------------------------- +// Event handling +// -------------------------------------------------------------------------- - GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | - GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); - if (!notify) - return; +// 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) +{ + wxSocketBase *sckobj = (wxSocketBase *)cdata; - GSocket_SetCallback(m_socket, m_neededreq, wx_socket_fallback, (char *)this); + sckobj->OnRequest((wxSocketNotify) notification); } -void wxSocketBase::OnRequest(wxSocketNotify req_evt) +void wxSocketBase::OnRequest(wxSocketNotify notification) { - wxSocketEvent event(m_id); - wxSocketEventFlags notify = EventToNotify(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. - if (m_defering != NO_DEFER) { - DoDefer(req_evt); - return; + switch(notification) + { + case wxSOCKET_CONNECTION: + 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_writing || !m_socket->Select(GSOCK_OUTPUT_FLAG)) + return; + break; + + case wxSOCKET_LOST: + m_connected = false; + m_establishing = false; + break; + + default: + break; } - if ((m_neededreq & notify) == notify) { - event.m_socket = this; - event.m_skevt = req_evt; - ProcessEvent(event); - OldOnNotify(req_evt); + // Schedule the event + + wxSocketEventFlags flag = 0; + wxUnusedVar(flag); + switch (notification) + { + 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 (req_evt == wxSOCKET_LOST) - Close(); + 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; } -// -------------------------------------------------------------- -// --------- wxSocketBase functions [Callback, CallbackData] ---- -// -------------------------------------------------------------- - -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; @@ -776,18 +1050,21 @@ 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; @@ -798,170 +1075,339 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek) return size; } -// -------------------------------------------------------------- + +// ========================================================================== // wxSocketServer -// -------------------------------------------------------------- +// ========================================================================== + +// -------------------------------------------------------------------------- +// Ctor +// -------------------------------------------------------------------------- -wxSocketServer::wxSocketServer(wxSockAddress& addr_man, - wxSockFlags flags) : - wxSocketBase(flags, SOCK_SERVER) +wxSocketServer::wxSocketServer(const wxSockAddress& addr_man, + wxSocketFlags flags) + : wxSocketBase(flags, wxSOCKET_SERVER) { - m_socket = GSocket_new(); + wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") ); - if (!m_socket) - return; + m_socket = GSocket_new(); - 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; + } - Notify(TRUE); + // Setup the socket as server + + m_socket->SetLocal(addr_man.GetAddress()); + + if (GetFlags() & wxSOCKET_REUSEADDR) { + m_socket->SetReusable(); + } + + 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); } -// -------------------------------------------------------------- -// wxSocketServer Accept -// -------------------------------------------------------------- +// -------------------------------------------------------------------------- +// Accept +// -------------------------------------------------------------------------- -bool wxSocketServer::AcceptWith(wxSocketBase& sock) +bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait) { GSocket *child_socket; - child_socket = GSocket_WaitConnection(m_socket); + if (!m_socket) + return false; + + // If wait == false, then the call should be nonblocking. + // When we are finished, we put the socket to blocking mode + // again. + + if (!wait) + m_socket->SetNonBlocking(1); + + child_socket = m_socket->WaitConnection(); + + if (!wait) + m_socket->SetNonBlocking(0); - sock.m_type = SOCK_INTERNAL; + if (!child_socket) + return false; + + sock.m_type = wxSOCKET_BASE; sock.m_socket = child_socket; - sock.m_connected = TRUE; + sock.m_connected = true; + + 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() +wxSocketBase *wxSocketServer::Accept(bool wait) { wxSocketBase* sock = new wxSocketBase(); - sock->SetFlags((wxSockFlags)m_flags); + sock->SetFlags(m_flags); - if (!AcceptWith(*sock)) - return NULL; + if (!AcceptWith(*sock, wait)) + { + sock->Destroy(); + sock = NULL; + } return sock; } -// -------------------------------------------------------------- +bool wxSocketServer::WaitForAccept(long seconds, long milliseconds) +{ + 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 -// -------------------------------------------------------------- +// ========================================================================== + +// -------------------------------------------------------------------------- +// Ctor and dtor +// -------------------------------------------------------------------------- -// --------- wxSocketClient CONSTRUCTOR ------------------------- -// -------------------------------------------------------------- -wxSocketClient::wxSocketClient(wxSockFlags _flags) : - wxSocketBase(_flags, SOCK_CLIENT) +wxSocketClient::wxSocketClient(wxSocketFlags flags) + : wxSocketBase(flags, wxSOCKET_CLIENT) { } -// -------------------------------------------------------------- -// --------- wxSocketClient DESTRUCTOR -------------------------- -// -------------------------------------------------------------- wxSocketClient::~wxSocketClient() { } -// -------------------------------------------------------------- -// --------- wxSocketClient Connect functions ------------------- -// -------------------------------------------------------------- -bool wxSocketClient::Connect(wxSockAddress& addr_man, bool WXUNUSED(wait) ) +// -------------------------------------------------------------------------- +// Connect +// -------------------------------------------------------------------------- + +bool wxSocketClient::DoConnect(wxSockAddress& addr_man, wxSockAddress* local, bool wait) { - if (IsConnected()) - Close(); + GSocketError err; - // This should never happen. if (m_socket) - GSocket_destroy(m_socket); + { + // Shutdown and destroy the socket + Close(); + delete m_socket; + } - // Initializes all socket stuff ... - // -------------------------------- m_socket = GSocket_new(); + m_connected = false; + m_establishing = false; if (!m_socket) - return FALSE; + return false; + + 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); + + // If wait == false, then the call should be nonblocking. + // When we are finished, we put the socket to blocking mode + // again. + + if (!wait) + m_socket->SetNonBlocking(1); + + // Reuse makes sense for clients too, if we are trying to rebind to the same port + if (GetFlags() & wxSOCKET_REUSEADDR) + { + m_socket->SetReusable(); + } + + // 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(); - m_connected = FALSE; + if (la && la->m_addr) + m_socket->SetLocal(la); + } + + m_socket->SetPeer(addr_man.GetAddress()); + err = m_socket->Connect(GSOCK_STREAMED); + + if (!wait) + m_socket->SetNonBlocking(0); - // Update the flags of m_socket. - SetFlags(m_flags); - GSocket_SetPeer(m_socket, addr_man.GetAddress()); - if (GSocket_Connect(m_socket, GSOCK_STREAMED) != GSOCK_NOERROR) - return FALSE; + if (err != GSOCK_NOERROR) + { + if (err == GSOCK_WOULDBLOCK) + m_establishing = true; - // Enables bg events. - // ------------------ - Notify(TRUE); + return false; + } - m_connected = TRUE; - return TRUE; + m_connected = true; + return true; } -bool wxSocketClient::WaitOnConnect(long seconds, long microseconds) +bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) { - int ret = _Wait(seconds, microseconds, GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG); - - if (ret) - m_connected = TRUE; + return (DoConnect(addr_man, NULL, wait)); +} - return m_connected; +bool wxSocketClient::Connect(wxSockAddress& addr_man, wxSockAddress& local, bool wait) +{ + return (DoConnect(addr_man, &local, wait)); } -void wxSocketClient::OnRequest(wxSocketNotify evt) +bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds) { - if ((GSocketEvent)evt == GSOCK_CONNECTION) - { - if (m_connected) - { - m_neededreq &= ~GSOCK_CONNECTION_FLAG; - return; - } - m_connected = TRUE; - return; - } - wxSocketBase::OnRequest(evt); + if (m_connected) // Already connected + return true; + + if (!m_establishing || !m_socket) // No connection in progress + return false; + + 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(); + + if(!m_socket) + { + wxFAIL_MSG( _T("datagram socket not new'd") ); + return; + } + // Setup the socket as non connection oriented + m_socket->SetLocal(addr.GetAddress()); + if( m_socket->SetNonOriented() != GSOCK_NOERROR ) + { + delete m_socket; + m_socket = NULL; + return; + } - SetEventType(type); + // 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)