X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/791b24c405bfbbddd85e449d2e51c53af3d83ead..6842d18650b487249b4ae29d0d7e17231b24cde8:/src/common/socket.cpp diff --git a/src/common/socket.cpp b/src/common/socket.cpp index 7bb51dabdc..0f7a633165 100644 --- a/src/common/socket.cpp +++ b/src/common/socket.cpp @@ -1,13 +1,15 @@ -//////////////////////////////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////////////// // Name: socket.cpp // Purpose: Socket handler classes -// Authors: Guilhem Lavaux +// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia // Created: April 1997 -// Updated: July 1999 +// Updated: September 1999 // Copyright: (C) 1999, 1998, 1997, Guilhem Lavaux +// (C) 1999, Guillermo Rodriguez Garcia // RCS_ID: $Id$ // License: see wxWindows license -//////////////////////////////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////////////// + #ifdef __GNUG__ #pragma implementation "socket.h" #endif @@ -24,13 +26,13 @@ ///////////////////////////////////////////////////////////////////////////// // wxWindows headers ///////////////////////////////////////////////////////////////////////////// -#include -#include -#include -#include -#include -#include -#include +#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 @@ -39,8 +41,17 @@ ///////////////////////////////////////////////////////////////////////////// // wxSocket headers ///////////////////////////////////////////////////////////////////////////// -#include -#include +#include "wx/sckaddr.h" +#include "wx/socket.h" + + +#if defined(__WXMSW__) || defined(__WXPM__) || defined(__WXMOTIF__) || defined(__WXMAC__) + #define PROCESS_EVENTS() wxYield() +#elif defined(__WXGTK__) + #include + #define PROCESS_EVENTS() gtk_main_iteration() +#endif + // -------------------------------------------------------------- // ClassInfos @@ -52,11 +63,12 @@ IMPLEMENT_CLASS(wxSocketClient, wxSocketBase) IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent) #endif -class wxSocketState : public wxObject { +class wxSocketState : public wxObject +{ public: bool notify_state; GSocketEventFlags evt_notify_state; - wxSocketBase::wxSockFlags socket_flags; + wxSockFlags socket_flags; wxSocketBase::wxSockCbk c_callback; char *c_callback_data; @@ -65,47 +77,46 @@ public: }; // -------------------------------------------------------------- -// --------- wxSocketBase CONSTRUCTOR --------------------------- +// wxSocketBase ctor and dtor // -------------------------------------------------------------- -wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags, - wxSocketBase::wxSockType _type) : + +wxSocketBase::wxSocketBase(wxSockFlags _flags, 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_socket(NULL), m_id(-1), + m_flags(_flags), m_type(_type), + m_neededreq(0), m_notify_state(FALSE), + m_connected(FALSE), m_establishing(FALSE), + m_reading(FALSE), m_writing(FALSE), + m_error(FALSE), m_lcount(0), m_timeout(600), m_states(), 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() + m_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL), + m_cbk(NULL), m_cdata(NULL) { } 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_socket(NULL), m_id(-1), + m_flags(NONE), m_type(SOCK_UNINIT), + m_neededreq(0), m_notify_state(FALSE), + m_connected(FALSE), m_establishing(FALSE), + m_reading(FALSE), m_writing(FALSE), + m_error(FALSE), m_lcount(0), m_timeout(600), m_states(), 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() + m_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL), + m_cbk(NULL), m_cdata(NULL) { } -// -------------------------------------------------------------- -// wxSocketBase destructor -// -------------------------------------------------------------- - wxSocketBase::~wxSocketBase() { if (m_unread) free(m_unread); - // At last, close the file descriptor. + // Shutdown and close the socket Close(); + // Destroy the GSocket object if (m_socket) GSocket_destroy(m_socket); } @@ -114,51 +125,51 @@ bool wxSocketBase::Close() { if (m_socket) { - if (m_notify_state == TRUE) - Notify(FALSE); + // Disable callbacks + GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); - // Shutdown the connection. + // Shutdown the connection GSocket_Shutdown(m_socket); m_connected = FALSE; + m_establishing = FALSE; } return TRUE; } // -------------------------------------------------------------- -// wxSocketBase base IO function +// wxSocketBase basic IO operations // -------------------------------------------------------------- -class _wxSocketInternalTimer: public wxTimer { - public: + +// All IO operations {Read, Write, ReadMsg, WriteMsg, Peek, +// Unread, Discard} update m_error and m_lcount. +// +// TODO: Should Connect, Accept and AcceptWith update m_error? + +class _wxSocketInternalTimer: public wxTimer +{ +public: int *m_state; unsigned long m_new_val; void Notify() - { - *m_state = m_new_val; // Change the value - } + { + *m_state = m_new_val; // Change the value + } }; -int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes) +wxUint32 wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes) { - wxSocketEventFlags old_event_flags; - bool old_notify_state; // Timer for timeout _wxSocketInternalTimer timer; + //wxLogMessage("Entrando a DeferRead, nbytes = %d", nbytes); wxASSERT(m_defering == NO_DEFER); // Set the defering mode to READ. m_defering = DEFER_READ; - // Save the old state. - old_event_flags = NeededReq(); - old_notify_state = m_notify_state; - - // Set the new async flag. - SetNotify(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG); - Notify(TRUE); - // Set the current buffer. m_defer_buffer = buffer; m_defer_nbytes = nbytes; @@ -169,316 +180,517 @@ int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes) timer.Start(m_timeout * 1000, FALSE); - // Wait for buffer completion. + // If the socket is readable, call DoDefer for the first time + if (GSocket_Select(m_socket, GSOCK_INPUT_FLAG)) + { + //wxLogMessage("Llamando al primer DoDefer"); + DoDefer(); + } + + // Wait for buffer completion. while (m_defer_buffer != NULL) - wxYield(); + PROCESS_EVENTS(); timer.Stop(); - // Restore the old state. - Notify(old_notify_state); - SetNotify(old_event_flags); - // Disable defering mode. m_defering = NO_DEFER; m_defer_timer = NULL; // Return the number of bytes read from the socket. + //wxLogMessage("Saliendo de DeferRead: total: %d bytes", nbytes - m_defer_nbytes); return nbytes-m_defer_nbytes; } wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes) { - int ret = 1; + // Mask read events + m_reading = TRUE; - m_lcount = GetPushback(buffer, nbytes, FALSE); - nbytes -= m_lcount; - buffer += m_lcount; + m_lcount = _Read(buffer, nbytes); - if (!m_connected) - return *this; + // If in WAITALL mode, all bytes should have been read. + if (m_flags & WAITALL) + m_error = (m_lcount != nbytes); + else + m_error = (m_lcount == 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; - } + // Trigger another read event if there is still data available. + m_reading = FALSE; + // TODO: TriggerRead - if ((m_flags & SPEED) != 0) { + return *this; +} - if ((m_flags & WAITALL) != 0) { - while (ret > 0 && nbytes > 0) { - 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 { +wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes) +{ + int total; + int ret = 1; + + // we try this even if the connection has already been closed. + total = GetPushback(buffer, nbytes, FALSE); + nbytes -= total; + buffer += total; + + // If the socket is not connected, or we have got the whole + // needed buffer, return immedately + if (!m_connected || !m_socket || !nbytes) + return total; + + // Possible combinations (they are checked in this order) + // NOWAIT + // SPEED | WAITALL + // SPEED + // WAITALL + // NONE + // + if (m_flags & NOWAIT) // NOWAIT + { + GSocket_SetNonBlocking(m_socket, TRUE); + ret = GSocket_Read(m_socket, buffer, nbytes); + GSocket_SetNonBlocking(m_socket, FALSE); + + if (ret > 0) + total += ret; + } + else if ((m_flags & SPEED) && (m_flags & WAITALL)) // SPEED, WAITALL + { + while (ret > 0 && nbytes > 0) + { ret = GSocket_Read(m_socket, buffer, nbytes); - if (ret > 0) - m_lcount += ret; + total += ret; + buffer += ret; + nbytes -= ret; } + // In case the last call was an error ... + if (ret < 0) + total++; + } + else if (m_flags & SPEED) // SPEED, !WAITALL + { + ret = GSocket_Read(m_socket, buffer, nbytes); - } else { + if (ret > 0) + total += ret; + } + else // NONE or WAITALL + { ret = DeferRead(buffer, nbytes); if (ret > 0) - m_lcount += ret; + total += ret; } - return *this; + return total; } wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes) { - unsigned long len, len2, sig; - struct { - char sig[4]; - char len[4]; +#define MAX_DISCARD_SIZE (10 * 1024) + + 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 & SPEED) | WAITALL); - Read((char *)&msg, sizeof(msg)); - if (m_lcount != sizeof(msg)) - return *this; + if (_Read((char *)&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) { + { + wxLogMessage(wxT("Warning: invalid signature returned to 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); + + //wxLogMessage("Readmsg: %d %d %d %d -> len == %d", + // msg.len[0], msg.len[1], msg.len[2], msg.len[3], len); + + 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 + // This check is necessary so that we don't attemp to read if + // the msg was zero bytes long. + if (len) + { + total = _Read(buffer, len); + + if (total != len) + goto exit; + } + if (len2) + { + 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_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2); + discard_len = _Read(discard_buffer, discard_len); + len2 -= discard_len; + } + while ((discard_len > 0) && len2); + + delete [] discard_buffer; + + if (len2 != 0) + goto exit; + } + if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg)) + goto exit; + + 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) - wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n")); + { + //wxLogMessage(wxT("Warning: invalid signature returned to ReadMsg")); + goto exit; + } + // everything was OK + error = FALSE; + +exit: + m_error = error; + m_lcount = total; + m_reading = FALSE; + SetFlags(old_flags); + + // TODO: TriggerRead return *this; + +#undef MAX_DISCARD_SIZE } wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes) { - Read(buffer, nbytes); - CreatePushbackAfter(buffer, nbytes); + // Mask read events + m_reading = TRUE; + + m_lcount = _Read(buffer, nbytes); + Pushback(buffer, nbytes); + // If in WAITALL mode, all bytes should have been read. + if (m_flags & WAITALL) + m_error = (m_lcount != nbytes); + else + m_error = (m_lcount == 0); + + // Trigger another read event if there is still data available. + m_reading = FALSE; + + // TODO: TriggerRead return *this; } -int wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes) +wxUint32 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); + //wxLogMessage("Entrando a DeferWrite"); m_defering = DEFER_WRITE; - // Save the old state - old_event_flags = NeededReq(); - old_notify_state = m_notify_state; - - SetNotify(GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG); - Notify(TRUE); - // Set the current buffer m_defer_buffer = (char *)buffer; m_defer_nbytes = nbytes; + m_defer_timer = &timer; // Start timer timer.m_state = (int *)&m_defer_buffer; timer.m_new_val = 0; - m_defer_timer = &timer; timer.Start(m_timeout * 1000, FALSE); + // If the socket is writable, call DoDefer for the first time + if (GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG)) + { + //wxLogMessage("Llamando al primer DoDefer"); + DoDefer(); + } + + // Wait for buffer completion. while (m_defer_buffer != NULL) - wxYield(); + PROCESS_EVENTS(); - // Stop timer - m_defer_timer = NULL; timer.Stop(); - // Restore the old state - Notify(old_notify_state); - SetNotify(old_event_flags); - + // Disable defering mode + m_defer_timer = NULL; m_defering = NO_DEFER; + wxString s; + s.Printf(wxT("Saliendo de DeferWrite: total %d bytes"), nbytes-m_defer_nbytes); + //wxLogMessage(s); + return nbytes-m_defer_nbytes; } wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes) { - int ret; + // Mask write events + m_writing = TRUE; - if ((m_flags & SPEED) != 0) - ret = GSocket_Write(m_socket, buffer, nbytes); + m_lcount = _Write(buffer, nbytes); + + // If in WAITALL mode, all bytes should have been written. + if (m_flags & WAITALL) + m_error = (m_lcount != nbytes); else - ret = DeferWrite(buffer, nbytes); + m_error = (m_lcount == 0); - if (ret != -1) - m_lcount += ret; + // Trigger another write event if the socket is still writable + m_writing = FALSE; + // TODO: TriggerWrite return *this; } +wxUint32 wxSocketBase::_Write(const char *buffer, wxUint32 nbytes) +{ + wxUint32 total = 0; + int ret = 1; + + if (!m_connected || !m_socket) + return 0; + + // Possible combinations (they are checked in this order) + // NOWAIT + // SPEED | WAITALL + // SPEED + // WAITALL + // NONE + // + if (m_flags & NOWAIT) // NOWAIT + { + GSocket_SetNonBlocking(m_socket, TRUE); + ret = GSocket_Write(m_socket, buffer, nbytes); + GSocket_SetNonBlocking(m_socket, FALSE); + + if (ret > 0) + total = ret; + } + else if ((m_flags & SPEED) && (m_flags & WAITALL)) // SPEED, WAITALL + { + while (ret > 0 && nbytes > 0) + { + ret = GSocket_Write(m_socket, buffer, nbytes); + total += ret; + buffer += ret; + nbytes -= ret; + } + // In case the last call was an error ... + if (ret < 0) + total ++; + } + else if (m_flags & SPEED) // SPEED, !WAITALL + { + ret = GSocket_Write(m_socket, buffer, nbytes); + + if (ret > 0) + total = ret; + } + else // NONE or WAITALL + { + ret = DeferWrite(buffer, nbytes); + + if (ret > 0) + total = ret; + } + + return total; +} + wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes) { + wxUint32 total; + bool error; + int old_flags; struct { - char sig[4]; - char len[4]; + unsigned char sig[4]; + unsigned char len[4]; } msg; + // Mask write events + m_writing = TRUE; + + error = TRUE; + total = 0; + old_flags = m_flags; + SetFlags((m_flags & SPEED) | WAITALL); + // warning about 'cast truncates constant value' #ifdef __VISUALC__ - #pragma warning(disable: 4310) +# 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.sig[0] = (unsigned char) 0xad; + msg.sig[1] = (unsigned char) 0xde; + msg.sig[2] = (unsigned char) 0xed; + msg.sig[3] = (unsigned char) 0xfe; + + 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; + + //wxLogMessage("Writemsg: %d %d %d %d -> %d", + // nbytes & 0xff, + // (nbytes >> 8) & 0xff, + // (nbytes >> 16) & 0xff, + // (nbytes >> 24) & 0xff, + // nbytes + // ); + + if (_Write((char *)&msg, sizeof(msg)) < sizeof(msg)) + goto exit; + + total = _Write(buffer, nbytes); + + if (total < nbytes) + goto exit; + + 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; - Write((char *)&msg, sizeof(msg)); + if ((_Write((char *)&msg, sizeof(msg))) < sizeof(msg)) + goto exit; + + // everything was OK + error = FALSE; + +exit: + m_error = error; + m_lcount = total; + m_writing = FALSE; + + // TODO: TriggerWrite return *this; #ifdef __VISUALC__ - #pragma warning(default: 4310) +# pragma warning(default: 4310) #endif // __VISUALC__ } wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes) { - m_lcount = 0; - if (nbytes != 0) { - CreatePushbackAfter(buffer, nbytes); - m_lcount = nbytes; - } - return *this; -} + if (nbytes != 0) + Pushback(buffer, nbytes); -bool wxSocketBase::IsData() const -{ - if (!m_socket) - return FALSE; + m_error = FALSE; + m_lcount = nbytes; - return (GSocket_DataAvailable(m_socket)); + return *this; } -void wxSocketBase::DoDefer(wxSocketNotify req_evt) +void wxSocketBase::DoDefer() { int ret; - if (req_evt == wxSOCKET_LOST) { - Close(); - m_defer_buffer = NULL; + 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; - } - m_defer_nbytes -= ret; + 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; + } - if (ret < 0) - m_defer_nbytes++; + if (ret >= 0) + m_defer_nbytes -= 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) { + // If we are waiting for all bytes to be acquired, keep the defering + // mode enabled. + if (!(m_flags & WAITALL) || !m_defer_nbytes || ret < 0) + { m_defer_buffer = NULL; - Notify(FALSE); - } else { + } + else + { m_defer_buffer += ret; m_defer_timer->Start(m_timeout * 1000, FALSE); } + + //wxLogMessage("DoDefer ha transferido %d bytes", ret); } -// --------------------------------------------------------------------- -// --------- wxSocketBase Discard(): deletes all byte in the input queue -// --------------------------------------------------------------------- -void wxSocketBase::Discard() +wxSocketBase& wxSocketBase::Discard() { #define MAX_BUFSIZE (10*1024) + + int old_flags; char *my_data = new char[MAX_BUFSIZE]; wxUint32 recv_size = MAX_BUFSIZE; + wxUint32 total = 0; - SaveState(); - SetFlags(NOWAIT | SPEED); + // Mask read events + m_reading = TRUE; + + old_flags = m_flags; + SetFlags(NOWAIT); while (recv_size == MAX_BUFSIZE) { - recv_size = Read(my_data, MAX_BUFSIZE).LastCount(); + recv_size = _Read(my_data, MAX_BUFSIZE); + total += recv_size; } - RestoreState(); delete [] my_data; + m_lcount = total; + m_error = FALSE; + + // Trigger another read event if there is still data available. + m_reading = FALSE; + + // TODO: TriggerRead + return *this; #undef MAX_BUFSIZE } // -------------------------------------------------------------- -// wxSocketBase socket info functions +// wxSocketBase get local or peer addresses // -------------------------------------------------------------- bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const @@ -510,7 +722,7 @@ bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const } // -------------------------------------------------------------- -// wxSocketBase wait functions +// wxSocketBase save and restore socket state // -------------------------------------------------------------- void wxSocketBase::SaveState() @@ -549,83 +761,122 @@ void wxSocketBase::RestoreState() delete state; } -// -------------------------------------------------------------- -// --------- wxSocketBase callback functions -------------------- -// -------------------------------------------------------------- - -wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_) -{ - wxSockCbk old_cbk = cbk_; - - m_cbk = cbk_; - return old_cbk; -} - -char *wxSocketBase::CallbackData(char *data) -{ - char *old_data = m_cdata; - - m_cdata = data; - return old_data; -} // -------------------------------------------------------------- -// --------- wxSocketBase wait functions ------------------------ +// wxSocketBase Wait functions // -------------------------------------------------------------- -static void wx_socket_wait(GSocket *socket, GSocketEvent event, char *cdata) -{ - int *state = (int *)cdata; - - *state = event; -} +// 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 PROCESS_EVENTS(), so this won't block the GUI. -bool wxSocketBase::_Wait(long seconds, long milliseconds, int type) +bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags flags) { - bool old_notify_state = m_notify_state; - int state = -1; + GSocketEventFlags result; _wxSocketInternalTimer timer; + long timeout; + int state = -1; - if (!m_connected || !m_socket) + // Check for valid socket + if (!m_socket) return FALSE; - // Set the variable to change - timer.m_state = &state; - timer.m_new_val = GSOCK_MAX_EVENT; + // If it is not a server, it must be connected or establishing connection + if ((m_type != SOCK_SERVER) && (!m_connected && !m_establishing)) + return FALSE; - // Disable the previous handler - Notify(FALSE); + // Check for valid timeout value + if (seconds != -1) + timeout = seconds * 1000 + milliseconds; + else + timeout = m_timeout * 1000; - // Set the timeout - timer.Start(seconds * 1000 + milliseconds, TRUE); - GSocket_SetCallback(m_socket, type, wx_socket_wait, (char *)&state); + // Activate timer + if (timeout) + { + timer.m_state = &state; + timer.m_new_val = 0; + timer.Start(timeout, TRUE); + } - while (state == -1) - wxYield(); + // Active polling (without using events) + // + // 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. + // + // Do this at least once (important if timeout == 0, when + // we are just polling) + do + { + result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG); - GSocket_UnsetCallback(m_socket, type); - timer.Stop(); + // Connection lost + if (result & GSOCK_LOST_FLAG) + { + timer.Stop(); + m_defer_buffer = NULL; + Close(); + return TRUE; + } + + // Incoming connection (server) or connection established (client) + if (result & GSOCK_CONNECTION_FLAG) + { + timer.Stop(); + m_connected = TRUE; + m_establishing = FALSE; + return TRUE; + } + + // If we are in the middle of a R/W operation, do not propagate + // to users. + if ( ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG)) + && (!m_writing) && (!m_reading) ) + { +/* TODO: remove this + if (m_defer_buffer == NULL) +*/ + { + timer.Stop(); + return TRUE; + } + } - // Notify will restore automatically the old GSocket flags - Notify(old_notify_state); + if (timeout != 0) + PROCESS_EVENTS(); + } + while ((state == -1) && timeout); - return (state != GSOCK_MAX_EVENT); + timer.Stop(); + return FALSE; } 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 + if (m_unread) + return TRUE; + + return _Wait(seconds, milliseconds, GSOCK_INPUT_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) @@ -633,103 +884,146 @@ bool wxSocketBase::WaitForLost(long seconds, long milliseconds) return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG); } -// -------------------------------------------------------------- -// --------- wxSocketBase callback management ------------------- -// -------------------------------------------------------------- - -wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt) +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; - default: - return 0; - } - return 0; + m_timeout = seconds; + + if (m_socket) + GSocket_SetTimeout(m_socket, m_timeout); } +// -------------------------------------------------------------- +// wxSocketBase flags +// -------------------------------------------------------------- + void wxSocketBase::SetFlags(wxSockFlags _flags) { m_flags = _flags; } -wxSocketBase::wxSockFlags wxSocketBase::GetFlags() const +// -------------------------------------------------------------- +// wxSocketBase callback management +// -------------------------------------------------------------- + +wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_) { - return m_flags; + wxSockCbk old_cbk = cbk_; + + m_cbk = cbk_; + return old_cbk; } -void wxSocketBase::SetNotify(wxSocketEventFlags flags) +char *wxSocketBase::CallbackData(char *data) { - /* Check if server */ - if (m_type != SOCK_SERVER) - flags &= ~GSOCK_CONNECTION_FLAG; + char *old_data = m_cdata; - m_neededreq = flags; - if (m_neededreq == 0) - Notify(FALSE); - else - Notify(m_notify_state); + m_cdata = data; + return old_data; } // -------------------------------------------------------------- -// Automatic notifier +// wxSocketBase automatic notifier // -------------------------------------------------------------- -static void wx_socket_fallback(GSocket *socket, GSocketEvent event, char *cdata) +// All events (INPUT, OUTPUT, CONNECTION, LOST) are now always +// internally watched; but users will only be notified of those +// events they are interested in. + +static void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket), + GSocketEvent event, char *cdata) { wxSocketBase *sckobj = (wxSocketBase *)cdata; sckobj->OnRequest((wxSocketNotify)event); } -void wxSocketBase::Notify(bool notify) +wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt) { - m_notify_state = notify; - if (!m_socket) - return; + 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; +} - GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | - GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG); - if (!notify) - return; +void wxSocketBase::SetNotify(wxSocketEventFlags flags) +{ + m_neededreq = flags; +} - GSocket_SetCallback(m_socket, m_neededreq, wx_socket_fallback, (char *)this); +void wxSocketBase::Notify(bool notify) +{ + m_notify_state = notify; } void wxSocketBase::OnRequest(wxSocketNotify req_evt) { wxSocketEvent event(m_id); - wxSocketEventFlags notify = EventToNotify(req_evt); + wxSocketEventFlags flag = EventToNotify(req_evt); - if (m_defering != NO_DEFER) { - DoDefer(req_evt); + // fprintf(stderr, "%s: Entering OnRequest (evt %d)\n", (m_type == SOCK_CLIENT)? "client" : "server", 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) + { + case wxSOCKET_CONNECTION: + m_establishing = FALSE; + m_connected = TRUE; + break; + case wxSOCKET_LOST: + m_defer_buffer = NULL; + Close(); + break; + case wxSOCKET_INPUT: + case wxSOCKET_OUTPUT: + if (m_defer_buffer) + { + // fprintf(stderr, "%s: Habia buffer, evt %d skipped\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt); + DoDefer(); + // Do not notify to user + return; + } + break; + } + + // If we are in the middle of a R/W operation, do not + // propagate events to users. + if (((req_evt == wxSOCKET_INPUT) && m_reading) || + ((req_evt == wxSOCKET_OUTPUT) && m_writing)) + { + // fprintf(stderr, "%s: Swallowed evt %d\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt); return; } - if ((m_neededreq & notify) == notify) { + if (((m_neededreq & flag) == flag) && m_notify_state) + { + // fprintf(stderr, "%s: Evt %d delivered\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt); event.m_socket = this; event.m_skevt = req_evt; ProcessEvent(event); OldOnNotify(req_evt); + + if (m_cbk) + m_cbk(*this, req_evt, m_cdata); } - if (req_evt == wxSOCKET_LOST) - Close(); + // fprintf(stderr, "%s: Exiting OnRequest (evt %d)\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt); } -void wxSocketBase::OldOnNotify(wxSocketNotify evt) +void wxSocketBase::OldOnNotify(wxSocketNotify WXUNUSED(evt)) { } // -------------------------------------------------------------- -// --------- wxSocketBase functions [Callback, CallbackData] ---- +// wxSocketBase set event handler // -------------------------------------------------------------- void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id) @@ -739,25 +1033,10 @@ void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id) } // -------------------------------------------------------------- -// --------- wxSocketBase pushback library ---------------------- +// wxSocketBase pushback // -------------------------------------------------------------- -void wxSocketBase::CreatePushbackAfter(const char *buffer, wxUint32 size) -{ - 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; -} - -void wxSocketBase::CreatePushbackBefore(const char *buffer, wxUint32 size) +void wxSocketBase::Pushback(const char *buffer, wxUint32 size) { if (m_unread == NULL) m_unread = (char *)malloc(size); @@ -783,6 +1062,7 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek) 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) { @@ -802,74 +1082,111 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek) // wxSocketServer // -------------------------------------------------------------- +// -------------------------------------------------------------- +// wxSocketServer ctor and dtor +// -------------------------------------------------------------- + wxSocketServer::wxSocketServer(wxSockAddress& addr_man, wxSockFlags flags) : wxSocketBase(flags, SOCK_SERVER) { + // Create the socket m_socket = GSocket_new(); if (!m_socket) return; + // Setup the socket as server GSocket_SetLocal(m_socket, addr_man.GetAddress()); - if (GSocket_SetServer(m_socket) != GSOCK_NOERROR) { + if (GSocket_SetServer(m_socket) != GSOCK_NOERROR) + { GSocket_destroy(m_socket); m_socket = NULL; return; } - Notify(TRUE); + 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); + } // -------------------------------------------------------------- // wxSocketServer Accept // -------------------------------------------------------------- -bool wxSocketServer::AcceptWith(wxSocketBase& sock) +bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait) { GSocket *child_socket; + if (!m_socket) + return FALSE; + + // GRG: 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); + child_socket = GSocket_WaitConnection(m_socket); + if (!wait) + GSocket_SetNonBlocking(m_socket, FALSE); + + // GRG: this was not being handled! + if (child_socket == NULL) + return FALSE; + sock.m_type = SOCK_INTERNAL; sock.m_socket = child_socket; sock.m_connected = TRUE; + GSocket_SetTimeout(sock.m_socket, sock.m_timeout); + GSocket_SetCallback(sock.m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, + wx_socket_callback, (char *)&sock); + return TRUE; } -wxSocketBase *wxSocketServer::Accept() +wxSocketBase *wxSocketServer::Accept(bool wait) { wxSocketBase* sock = new wxSocketBase(); sock->SetFlags((wxSockFlags)m_flags); - if (!AcceptWith(*sock)) + if (!AcceptWith(*sock, wait)) return NULL; return sock; } +bool wxSocketServer::WaitForAccept(long seconds, long milliseconds) +{ + return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); +} + // -------------------------------------------------------------- // wxSocketClient // -------------------------------------------------------------- -// --------- wxSocketClient CONSTRUCTOR ------------------------- // -------------------------------------------------------------- +// wxSocketClient ctor and dtor +// -------------------------------------------------------------- + wxSocketClient::wxSocketClient(wxSockFlags _flags) : wxSocketBase(_flags, SOCK_CLIENT) { } -// -------------------------------------------------------------- -// --------- wxSocketClient DESTRUCTOR -------------------------- -// -------------------------------------------------------------- wxSocketClient::~wxSocketClient() { } // -------------------------------------------------------------- -// --------- wxSocketClient Connect functions ------------------- +// wxSocketClient Connect functions // -------------------------------------------------------------- bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) { @@ -882,28 +1199,26 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) if (m_socket) GSocket_destroy(m_socket); - // Initializes all socket stuff ... - // -------------------------------- + // Initialize all socket stuff ... m_socket = GSocket_new(); + m_connected = FALSE; + m_establishing = FALSE; if (!m_socket) return FALSE; - m_connected = FALSE; + 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); + + // GRG: If wait == FALSE, then the call should be nonblocking. + // When we are finished, we put the socket to blocking mode + // again. - // GRG: If wait == FALSE, then set the socket to - // nonblocking. I will set it back to blocking later, - // but I am not sure if this is really a good idea. - // IMO, all GSockets objects used in wxSocket should - // be non-blocking. - // -------------------------------- if (!wait) GSocket_SetNonBlocking(m_socket, TRUE); - // Update the flags of m_socket. - SetFlags(m_flags); - - // Try to connect GSocket_SetPeer(m_socket, addr_man.GetAddress()); err = GSocket_Connect(m_socket, GSOCK_STREAMED); @@ -911,39 +1226,26 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait) GSocket_SetNonBlocking(m_socket, FALSE); if (err != GSOCK_NOERROR) - return FALSE; + { + if (err == GSOCK_WOULDBLOCK) + m_establishing = TRUE; - // Enables bg events. - // ------------------ - Notify(TRUE); + return FALSE; + } m_connected = TRUE; return TRUE; } -bool wxSocketClient::WaitOnConnect(long seconds, long microseconds) +bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds) { - int ret = _Wait(seconds, microseconds, GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG); + if (m_connected) // Already connected + return TRUE; - if (ret) - m_connected = TRUE; - - return m_connected; -} + if (!m_establishing || !m_socket) // No connection in progress + return FALSE; -void wxSocketClient::OnRequest(wxSocketNotify evt) -{ - if ((GSocketEvent)evt == GSOCK_CONNECTION) - { - if (m_connected) - { - m_neededreq &= ~GSOCK_CONNECTION_FLAG; - return; - } - m_connected = TRUE; - return; - } - wxSocketBase::OnRequest(evt); + return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); } // --------------------------------------------------------------