X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/53a161e10152bc5ff7d4a4c7257f64db13f81ddb..95fa881e92cb5284be976d5c7267a03e5fb4c7ab:/src/common/socket.cpp diff --git a/src/common/socket.cpp b/src/common/socket.cpp index 95ce875344..222ca488ba 100644 --- a/src/common/socket.cpp +++ b/src/common/socket.cpp @@ -4,7 +4,8 @@ // Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia // Created: April 1997 // Copyright: (C) 1999-1997, Guilhem Lavaux -// (C) 2000-1999, Guillermo Rodriguez Garcia +// (C) 1999-2000, Guillermo Rodriguez Garcia +// (C) 2008 Vadim Zeitlin // RCS_ID: $Id$ // License: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -41,7 +42,9 @@ #include "wx/stopwatch.h" #include "wx/thread.h" #include "wx/evtloop.h" + #include "wx/private/fd.h" +#include "wx/private/socket.h" // DLL options compatibility check: #include "wx/build.h" @@ -66,6 +69,21 @@ IMPLEMENT_CLASS(wxSocketClient, wxSocketBase) IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase) IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent) +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- + +namespace +{ + +void SetTimeValFromMS(timeval& tv, unsigned long ms) +{ + tv.tv_sec = (ms / 1000); + tv.tv_usec = (ms % 1000) * 1000; +} + +} // anonymous namespace + // -------------------------------------------------------------------------- // private classes // -------------------------------------------------------------------------- @@ -84,39 +102,14 @@ public: DECLARE_NO_COPY_CLASS(wxSocketState) }; -// Conditionally make the socket non-blocking for the lifetime of this object. -class wxSocketUnblocker -{ -public: - wxSocketUnblocker(GSocket *socket, bool unblock = true) - : m_socket(socket), - m_unblock(unblock) - { - if ( m_unblock ) - m_socket->SetNonBlocking(true); - } - - ~wxSocketUnblocker() - { - if ( m_unblock ) - m_socket->SetNonBlocking(false); - } - -private: - GSocket * const m_socket; - bool m_unblock; - - DECLARE_NO_COPY_CLASS(wxSocketUnblocker) -}; - // ============================================================================ -// GSocketManager +// wxSocketManager // ============================================================================ -GSocketManager *GSocketManager::ms_manager = NULL; +wxSocketManager *wxSocketManager::ms_manager = NULL; /* static */ -void GSocketManager::Set(GSocketManager *manager) +void wxSocketManager::Set(wxSocketManager *manager) { wxASSERT_MSG( !ms_manager, "too late to set manager now" ); @@ -124,7 +117,7 @@ void GSocketManager::Set(GSocketManager *manager) } /* static */ -void GSocketManager::Init() +void wxSocketManager::Init() { wxASSERT_MSG( !ms_manager, "shouldn't be initialized twice" ); @@ -154,33 +147,19 @@ void GSocketManager::Init() } // ========================================================================== -// GSocketBase +// wxSocketImpl // ========================================================================== -/* static */ -GSocket *GSocketBase::Create(wxSocketBase& wxsocket) -{ - GSocket * const newsocket = new GSocket(wxsocket); - if ( !GSocketManager::Get()->Init_Socket(newsocket) ) - { - delete newsocket; - return NULL; - } - - return newsocket; -} - -GSocketBase::GSocketBase(wxSocketBase& wxsocket) +wxSocketImpl::wxSocketImpl(wxSocketBase& wxsocket) : m_wxsocket(&wxsocket) { m_fd = INVALID_SOCKET; m_detected = 0; m_local = NULL; m_peer = NULL; - m_error = GSOCK_NOERROR; + m_error = wxSOCKET_NOERROR; m_server = false; m_stream = true; - m_non_blocking = false; SetTimeout(wxsocket.GetTimeout() * 1000); @@ -192,7 +171,7 @@ GSocketBase::GSocketBase(wxSocketBase& wxsocket) m_initialSendBufferSize = -1; } -GSocketBase::~GSocketBase() +wxSocketImpl::~wxSocketImpl() { if (m_fd != INVALID_SOCKET) Shutdown(); @@ -202,17 +181,233 @@ GSocketBase::~GSocketBase() if (m_peer) GAddress_destroy(m_peer); +} + +bool wxSocketImpl::PreCreateCheck(GAddress *addr) +{ + if ( m_fd != INVALID_SOCKET ) + { + m_error = wxSOCKET_INVSOCK; + return false; + } + + if ( !addr || !addr->m_addr ) + { + m_error = wxSOCKET_INVADDR; + return false; + } + + return true; +} + +void wxSocketImpl::PostCreation() +{ + // FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option +#ifdef SO_NOSIGPIPE + EnableSocketOption(SO_NOSIGPIPE); +#endif + + if ( m_reusable ) + EnableSocketOption(SO_REUSEADDR); + + if ( m_broadcast ) + { + wxASSERT_MSG( !m_stream, "broadcasting is for datagram sockets only" ); + + EnableSocketOption(SO_BROADCAST); + } + + if ( m_initialRecvBufferSize >= 0 ) + SetSocketOption(SO_RCVBUF, m_initialRecvBufferSize); + if ( m_initialSendBufferSize >= 0 ) + SetSocketOption(SO_SNDBUF, m_initialSendBufferSize); + + // we always put our sockets in unblocked mode and handle blocking + // ourselves in DoRead/Write() if wxSOCKET_WAITALL is specified + UnblockAndRegisterWithEventLoop(); +} + +wxSocketError wxSocketImpl::UpdateLocalAddress() +{ + WX_SOCKLEN_T lenAddr = sizeof(*m_local->m_addr); + if ( getsockname(m_fd, m_local->m_addr, &lenAddr) != 0 ) + { + Close(); + m_error = wxSOCKET_IOERR; + return m_error; + } + + m_local->m_len = lenAddr; + + return wxSOCKET_NOERROR; +} + +wxSocketError wxSocketImpl::CreateServer() +{ + if ( !PreCreateCheck(m_local) ) + return m_error; + + m_server = true; + m_stream = true; + + // do create the socket + m_fd = socket(m_local->m_realfamily, SOCK_STREAM, 0); + + if ( m_fd == INVALID_SOCKET ) + { + m_error = wxSOCKET_IOERR; + return wxSOCKET_IOERR; + } + + PostCreation(); + + // and then bind to and listen on it + // + // FIXME: should we test for m_dobind here? + if ( bind(m_fd, m_local->m_addr, m_local->m_len) != 0 ) + m_error = wxSOCKET_IOERR; + + if ( IsOk() ) + { + if ( listen(m_fd, 5) != 0 ) + m_error = wxSOCKET_IOERR; + } + + if ( !IsOk() ) + { + Close(); + return m_error; + } + + // finally retrieve the address we effectively bound to + return UpdateLocalAddress(); +} + +wxSocketError wxSocketImpl::CreateClient(bool wait) +{ + if ( !PreCreateCheck(m_peer) ) + return m_error; + + m_fd = socket(m_peer->m_realfamily, SOCK_STREAM, 0); + + if ( m_fd == INVALID_SOCKET ) + { + m_error = wxSOCKET_IOERR; + return wxSOCKET_IOERR; + } + + PostCreation(); + + // If a local address has been set, then bind to it before calling connect + if ( m_local && m_local->m_addr ) + { + if ( bind(m_fd, m_local->m_addr, m_local->m_len) != 0 ) + { + Close(); + m_error = wxSOCKET_IOERR; + return m_error; + } + } + + // Do connect now + int rc = connect(m_fd, m_peer->m_addr, m_peer->m_len); + if ( rc == SOCKET_ERROR ) + { + wxSocketError err = GetLastError(); + if ( err == wxSOCKET_WOULDBLOCK ) + { + m_establishing = true; + + // block waiting for connection if we should (otherwise just return + // wxSOCKET_WOULDBLOCK to the caller) + if ( wait ) + { + err = SelectWithTimeout(wxSOCKET_CONNECTION_FLAG) + ? wxSOCKET_NOERROR + : wxSOCKET_TIMEDOUT; + m_establishing = false; + } + } + + m_error = err; + } + else // connected + { + m_error = wxSOCKET_NOERROR; + } - // cast is ok as all GSocketBase objects we have in our code are really - // GSockets - GSocketManager::Get()->Destroy_Socket(static_cast(this)); + return m_error; } -/* GSocket_Shutdown: + +wxSocketError wxSocketImpl::CreateUDP() +{ + if ( !PreCreateCheck(m_local) ) + return m_error; + + m_stream = false; + m_server = false; + + m_fd = socket(m_local->m_realfamily, SOCK_DGRAM, 0); + + if ( m_fd == INVALID_SOCKET ) + { + m_error = wxSOCKET_IOERR; + return wxSOCKET_IOERR; + } + + PostCreation(); + + if ( m_dobind ) + { + if ( bind(m_fd, m_local->m_addr, m_local->m_len) != 0 ) + { + Close(); + m_error = wxSOCKET_IOERR; + return m_error; + } + + return UpdateLocalAddress(); + } + + return wxSOCKET_NOERROR; +} + +wxSocketImpl *wxSocketImpl::Accept(wxSocketBase& wxsocket) +{ + wxSockAddr from; + WX_SOCKLEN_T fromlen = sizeof(from); + const int fd = accept(m_fd, &from, &fromlen); + + if ( fd == INVALID_SOCKET ) + return NULL; + + wxSocketImpl * const sock = Create(wxsocket); + sock->m_fd = fd; + + sock->m_peer = GAddress_new(); + _GAddress_translate_from(sock->m_peer, &from, fromlen); + + sock->UnblockAndRegisterWithEventLoop(); + + return sock; +} + + +void wxSocketImpl::Close() +{ + if ( m_fd != INVALID_SOCKET ) + { + DoClose(); + m_fd = INVALID_SOCKET; + } +} + +/* * Disallow further read/write operations on this socket, close * the fd and disable all callbacks. */ -void GSocketBase::Shutdown() +void wxSocketImpl::Shutdown() { if ( m_fd != INVALID_SOCKET ) { @@ -220,28 +415,125 @@ void GSocketBase::Shutdown() Close(); } - m_detected = GSOCK_LOST_FLAG; + m_detected = wxSOCKET_LOST_FLAG; } -/* GSocket_SetTimeout: +/* * Sets the timeout for blocking calls. Time is expressed in * milliseconds. */ -void GSocketBase::SetTimeout(unsigned long millis) +void wxSocketImpl::SetTimeout(unsigned long millis) { -#ifdef __WXMSW__ - m_timeout.tv_sec = (millis / 1000); - m_timeout.tv_usec = (millis % 1000) * 1000; -#else - m_timeout = millis; -#endif + SetTimeValFromMS(m_timeout, millis); +} + +void wxSocketImpl::NotifyOnStateChange(wxSocketNotify event) +{ + m_wxsocket->OnRequest(event); +} + +/* Address handling */ + +/* + * Set or get the local or peer address for this socket. The 'set' + * functions return wxSOCKET_NOERROR on success, an error code otherwise. + * The 'get' functions return a pointer to a GAddress object on success, + * or NULL otherwise, in which case they set the error code of the + * corresponding socket. + * + * Error codes: + * wxSOCKET_INVSOCK - the socket is not valid. + * wxSOCKET_INVADDR - the address is not valid. + */ +wxSocketError wxSocketImpl::SetLocal(GAddress *address) +{ + /* the socket must be initialized, or it must be a server */ + if (m_fd != INVALID_SOCKET && !m_server) + { + m_error = wxSOCKET_INVSOCK; + return wxSOCKET_INVSOCK; + } + + /* check address */ + if (address == NULL || address->m_family == wxSOCKET_NOFAMILY) + { + m_error = wxSOCKET_INVADDR; + return wxSOCKET_INVADDR; + } + + if (m_local) + GAddress_destroy(m_local); + + m_local = GAddress_copy(address); + + return wxSOCKET_NOERROR; +} + +wxSocketError wxSocketImpl::SetPeer(GAddress *address) +{ + /* check address */ + if (address == NULL || address->m_family == wxSOCKET_NOFAMILY) + { + m_error = wxSOCKET_INVADDR; + return wxSOCKET_INVADDR; + } + + if (m_peer) + GAddress_destroy(m_peer); + + m_peer = GAddress_copy(address); + + return wxSOCKET_NOERROR; +} + +GAddress *wxSocketImpl::GetLocal() +{ + GAddress *address; + wxSockAddr addr; + WX_SOCKLEN_T size = sizeof(addr); + wxSocketError err; + + /* try to get it from the m_local var first */ + if (m_local) + return GAddress_copy(m_local); + + /* else, if the socket is initialized, try getsockname */ + if (m_fd == INVALID_SOCKET) + { + m_error = wxSOCKET_INVSOCK; + return NULL; + } + + if (getsockname(m_fd, (sockaddr*)&addr, &size) == SOCKET_ERROR) + { + m_error = wxSOCKET_IOERR; + return NULL; + } + + /* got a valid address from getsockname, create a GAddress object */ + if ((address = GAddress_new()) == NULL) + { + m_error = wxSOCKET_MEMERR; + return NULL; + } + + if ((err = _GAddress_translate_from(address, (sockaddr*)&addr, size)) != wxSOCKET_NOERROR) + { + GAddress_destroy(address); + m_error = err; + return NULL; + } + + return address; } -void GSocketBase::NotifyOnStateChange(GSocketEvent event) +GAddress *wxSocketImpl::GetPeer() { - // GSocketEvent and wxSocketNotify enums have the same elements with the - // same values - m_wxsocket->OnRequest(static_cast(event)); + /* try to get it from the m_peer var */ + if (m_peer) + return GAddress_copy(m_peer); + + return NULL; } // ========================================================================== @@ -265,7 +557,8 @@ bool wxSocketBase::Initialize() { if ( !m_countInit++ ) { - if ( !GSocket_Init() ) + wxSocketManager * const manager = wxSocketManager::Get(); + if ( !manager || !manager->OnInit() ) { m_countInit--; @@ -282,7 +575,10 @@ void wxSocketBase::Shutdown() wxASSERT_MSG( m_countInit > 0, _T("extra call to Shutdown()") ); if ( --m_countInit == 0 ) { - GSocket_Cleanup(); + wxSocketManager * const manager = wxSocketManager::Get(); + wxCHECK_RET( manager, "should have a socket manager" ); + + manager->OnExit(); } } @@ -292,7 +588,7 @@ void wxSocketBase::Shutdown() void wxSocketBase::Init() { - m_socket = NULL; + m_impl = NULL; m_type = wxSOCKET_UNINIT; // state @@ -317,7 +613,8 @@ void wxSocketBase::Init() m_handler = NULL; m_clientData = NULL; m_notify = false; - m_eventmask = 0; + m_eventmask = + m_eventsgot = 0; if ( !IsInitialized() ) { @@ -353,9 +650,8 @@ wxSocketBase::~wxSocketBase() if (!m_beingDeleted) Close(); - // Destroy the GSocket object - if (m_socket) - delete m_socket; + // Destroy the implementation object + delete m_impl; // Free the pushback buffer if (m_unread) @@ -372,7 +668,7 @@ bool wxSocketBase::Destroy() // Shutdown and close the socket Close(); - // Supress events from now on + // Suppress events from now on Notify(false); // schedule this object for deletion @@ -391,22 +687,28 @@ bool wxSocketBase::Destroy() return true; } +// ---------------------------------------------------------------------------- +// simply accessors +// ---------------------------------------------------------------------------- + +wxSocketError wxSocketBase::LastError() const +{ + return m_impl->GetError(); +} + // -------------------------------------------------------------------------- // Basic IO calls // -------------------------------------------------------------------------- // 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? - bool wxSocketBase::Close() { // Interrupt pending waits InterruptWait(); - if (m_socket) - m_socket->Shutdown(); + if (m_impl) + m_impl->Shutdown(); m_connected = false; m_establishing = false; @@ -445,7 +747,7 @@ wxUint32 wxSocketBase::DoRead(void* buffer_, wxUint32 nbytes) buffer += total; // If it's indeed closed or if read everything, there is nothing more to do. - if ( !m_socket || !nbytes ) + if ( !m_impl || !nbytes ) return total; wxCHECK_MSG( buffer, 0, "NULL buffer" ); @@ -455,8 +757,7 @@ wxUint32 wxSocketBase::DoRead(void* buffer_, wxUint32 nbytes) // polling the socket and don't block at all. if ( m_flags & wxSOCKET_NOWAIT ) { - wxSocketUnblocker unblock(m_socket); - int ret = m_socket->Read(buffer, nbytes); + int ret = m_impl->Read(buffer, nbytes); if ( ret < 0 ) return 0; @@ -466,13 +767,11 @@ wxUint32 wxSocketBase::DoRead(void* buffer_, wxUint32 nbytes) { for ( ;; ) { - // Wait until socket becomes ready for reading dispatching the GUI - // events in the meanwhile unless wxSOCKET_BLOCK was explicitly - // specified to disable this. - if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() ) + // Wait until socket becomes ready for reading + if ( !WaitForRead() ) break; - const int ret = m_socket->Read(buffer, nbytes); + const int ret = m_impl->Read(buffer, nbytes); if ( ret == 0 ) { // for connection-oriented (e.g. TCP) sockets we can only read @@ -655,7 +954,7 @@ wxUint32 wxSocketBase::DoWrite(const void *buffer_, wxUint32 nbytes) const char *buffer = static_cast(buffer_); // Return if there is nothing to read or the socket is (already?) closed. - if ( !m_socket || !nbytes ) + if ( !m_impl || !nbytes ) return 0; wxCHECK_MSG( buffer, 0, "NULL buffer" ); @@ -663,8 +962,7 @@ wxUint32 wxSocketBase::DoWrite(const void *buffer_, wxUint32 nbytes) wxUint32 total = 0; if ( m_flags & wxSOCKET_NOWAIT ) { - wxSocketUnblocker unblock(m_socket); - const int ret = m_socket->Write(buffer, nbytes); + const int ret = m_impl->Write(buffer, nbytes); if ( ret > 0 ) total += ret; } @@ -672,10 +970,10 @@ wxUint32 wxSocketBase::DoWrite(const void *buffer_, wxUint32 nbytes) { for ( ;; ) { - if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() ) + if ( !WaitForWrite() ) break; - const int ret = m_socket->Write(buffer, nbytes); + const int ret = m_impl->Write(buffer, nbytes); if ( ret == 0 ) { m_closed = true; @@ -801,48 +1099,45 @@ wxSocketBase& wxSocketBase::Discard() // Wait functions // -------------------------------------------------------------------------- -/* GSocket_Select: - * Polls the socket to determine its status. This function will - * check for the events specified in the 'flags' parameter, and - * it will return a mask indicating which operations can be - * performed. This function won't block, regardless of the - * mode (blocking | nonblocking) of the socket. +/* + This function will check for the events specified in the flags parameter, + and it will return a mask indicating which operations can be performed. */ -GSocketEventFlags GSocketBase::Select(GSocketEventFlags flags) +wxSocketEventFlags wxSocketImpl::Select(wxSocketEventFlags flags, + const timeval *timeout) { - assert(this); + wxSocketEventFlags result = 0; + + if (m_fd == INVALID_SOCKET) + return (wxSOCKET_LOST_FLAG & flags); + + struct timeval tv; + if ( timeout ) + tv = *timeout; + else + tv.tv_sec = tv.tv_usec = 0; - GSocketEventFlags result = 0; fd_set readfds; fd_set writefds; fd_set exceptfds; - struct timeval tv; - - if (m_fd == -1) - return (GSOCK_LOST_FLAG & flags); - - /* Do not use a static struct, Linux can garble it */ - tv.tv_sec = 0; - tv.tv_usec = 0; - wxFD_ZERO(&readfds); wxFD_ZERO(&writefds); wxFD_ZERO(&exceptfds); wxFD_SET(m_fd, &readfds); - if (flags & GSOCK_OUTPUT_FLAG || flags & GSOCK_CONNECTION_FLAG) + if (flags & wxSOCKET_OUTPUT_FLAG || flags & wxSOCKET_CONNECTION_FLAG) wxFD_SET(m_fd, &writefds); wxFD_SET(m_fd, &exceptfds); /* Check 'sticky' CONNECTION flag first */ - result |= GSOCK_CONNECTION_FLAG & m_detected; + result |= wxSOCKET_CONNECTION_FLAG & m_detected; /* If we have already detected a LOST event, then don't try * to do any further processing. */ - if ((m_detected & GSOCK_LOST_FLAG) != 0) + if ((m_detected & wxSOCKET_LOST_FLAG) != 0) { m_establishing = false; - return (GSOCK_LOST_FLAG & flags); + return (wxSOCKET_LOST_FLAG & flags); } /* Try select now */ @@ -856,23 +1151,23 @@ GSocketEventFlags GSocketBase::Select(GSocketEventFlags flags) if (wxFD_ISSET(m_fd, &exceptfds)) { m_establishing = false; - m_detected = GSOCK_LOST_FLAG; + m_detected = wxSOCKET_LOST_FLAG; /* LOST event: Abort any further processing */ - return (GSOCK_LOST_FLAG & flags); + return (wxSOCKET_LOST_FLAG & flags); } /* Check for readability */ if (wxFD_ISSET(m_fd, &readfds)) { - result |= GSOCK_INPUT_FLAG; + result |= wxSOCKET_INPUT_FLAG; if (m_server && m_stream) { /* This is a TCP server socket that detected a connection. While the INPUT_FLAG is also set, it doesn't matter on this kind of sockets, as we can only Accept() from them. */ - m_detected |= GSOCK_CONNECTION_FLAG; + m_detected |= wxSOCKET_CONNECTION_FLAG; } } @@ -888,35 +1183,29 @@ GSocketEventFlags GSocketBase::Select(GSocketEventFlags flags) if (error) { - m_detected = GSOCK_LOST_FLAG; + m_detected = wxSOCKET_LOST_FLAG; /* LOST event: Abort any further processing */ - return (GSOCK_LOST_FLAG & flags); + return (wxSOCKET_LOST_FLAG & flags); } else { - m_detected |= GSOCK_CONNECTION_FLAG; + m_detected |= wxSOCKET_CONNECTION_FLAG; } } else { - result |= GSOCK_OUTPUT_FLAG; + result |= wxSOCKET_OUTPUT_FLAG; } } return (result | m_detected) & flags; } -// 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 runs the event loop so that -// this won't block the GUI. - bool wxSocketBase::DoWait(long seconds, long milliseconds, wxSocketEventFlags flags) { - wxCHECK_MSG( m_socket, false, "can't wait on invalid socket" ); + wxCHECK_MSG( m_impl, false, "can't wait on invalid socket" ); // This can be set to true from Interrupt() to exit this function a.s.a.p. m_interrupt = false; @@ -931,9 +1220,10 @@ wxSocketBase::DoWait(long seconds, long milliseconds, wxSocketEventFlags flags) const wxMilliClock_t timeEnd = wxGetLocalTimeMillis() + timeout; // Get the active event loop which we'll use for the message dispatching - // when running in the main thread + // when running in the main thread unless this was explicitly disabled by + // setting wxSOCKET_BLOCK flag wxEventLoopBase *eventLoop; - if ( wxIsMainThread() ) + if ( !(m_flags & wxSOCKET_BLOCK) && wxIsMainThread() ) { eventLoop = wxEventLoop::GetActive(); } @@ -943,67 +1233,72 @@ wxSocketBase::DoWait(long seconds, long milliseconds, wxSocketEventFlags flags) eventLoop = NULL; } - // Wait in an active polling loop: notice that the loop is executed at - // least once, even if timeout is 0 (i.e. polling). + // Wait until we receive the event we're waiting for or the timeout expires + // (but note that we always execute the loop at least once, even if timeout + // is 0 as this is used for polling) bool gotEvent = false; - for ( ;; ) + for ( bool firstTime = true; !m_interrupt ; firstTime = false ) { - // We always stop waiting when the connection is lost as it doesn't - // make sense to continue further, even if GSOCK_LOST_FLAG is not - // specified in flags to wait for. - const GSocketEventFlags - result = m_socket->Select(flags | GSOCK_LOST_FLAG); - - // Incoming connection (server) or connection established (client)? - if ( result & GSOCK_CONNECTION_FLAG ) + long timeLeft = wxMilliClockToLong(timeEnd - wxGetLocalTimeMillis()); + if ( timeLeft < 0 ) { - m_connected = true; - m_establishing = false; - gotEvent = true; - break; + if ( !firstTime ) + break; // timed out + + timeLeft = 0; } - // Data available or output buffer ready? - if ( (result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG) ) + // This function is only called if wxSOCKET_BLOCK flag was not used and + // so we should dispatch the events if there is an event loop capable + // of doing it. + wxSocketEventFlags events; + if ( eventLoop ) { - gotEvent = true; - break; + // reset them before starting to wait + m_eventsgot = 0; + + eventLoop->DispatchTimeout(timeLeft); + + events = m_eventsgot; + } + else // no event loop or waiting in another thread + { + // as explained below, we should always check for wxSOCKET_LOST_FLAG + timeval tv; + SetTimeValFromMS(tv, timeLeft); + events = m_impl->Select(flags | wxSOCKET_LOST_FLAG, &tv); } - // Connection lost - if ( result & GSOCK_LOST_FLAG ) + // always check for wxSOCKET_LOST_FLAG, even if flags doesn't include + // it, as continuing to wait for anything else after getting it is + // pointless + if ( events & wxSOCKET_LOST_FLAG ) { m_connected = false; m_establishing = false; - if ( flags & GSOCK_LOST_FLAG ) + if ( flags & wxSOCKET_LOST_FLAG ) gotEvent = true; break; } - if ( m_interrupt ) - break; + // otherwise mask out the bits we're not interested in + events &= flags; - // Wait more? - const wxMilliClock_t timeNow = wxGetLocalTimeMillis(); - if ( timeNow >= timeEnd ) - break; - - if ( eventLoop ) + // Incoming connection (server) or connection established (client)? + if ( events & wxSOCKET_CONNECTION_FLAG ) { - // This function is only called if wxSOCKET_BLOCK flag was not used - // and so we should dispatch the events if there is an event loop - // capable of doing it. - if ( eventLoop->Pending() ) - eventLoop->Dispatch(); + m_connected = true; + m_establishing = false; + gotEvent = true; + break; } -#if wxUSE_THREADS - else // no event loop or waiting in another thread + + // Data available or output buffer ready? + if ( (events & wxSOCKET_INPUT_FLAG) || (events & wxSOCKET_OUTPUT_FLAG) ) { - // We're busy waiting but at least give up the rest of our current - // time slice. - wxThread::Yield(); + gotEvent = true; + break; } -#endif // wxUSE_THREADS } return gotEvent; @@ -1012,10 +1307,10 @@ wxSocketBase::DoWait(long seconds, long milliseconds, wxSocketEventFlags flags) bool wxSocketBase::Wait(long seconds, long milliseconds) { return DoWait(seconds, milliseconds, - GSOCK_INPUT_FLAG | - GSOCK_OUTPUT_FLAG | - GSOCK_CONNECTION_FLAG | - GSOCK_LOST_FLAG + wxSOCKET_INPUT_FLAG | + wxSOCKET_OUTPUT_FLAG | + wxSOCKET_CONNECTION_FLAG | + wxSOCKET_LOST_FLAG ); } @@ -1025,22 +1320,22 @@ bool wxSocketBase::WaitForRead(long seconds, long milliseconds) if ( m_unread ) return true; - // Note that GSOCK_INPUT_LOST has to be explicitly passed to DoWait + // Note that wxSOCKET_INPUT_LOST has to be explicitly passed to DoWait // because of the semantics of WaitForRead: a return value of true means - // that a GSocket_Read call will return immediately, not that there is + // that a Read call will return immediately, not that there is // actually data to read. - return DoWait(seconds, milliseconds, GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG); + return DoWait(seconds, milliseconds, wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG); } bool wxSocketBase::WaitForWrite(long seconds, long milliseconds) { - return DoWait(seconds, milliseconds, GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG); + return DoWait(seconds, milliseconds, wxSOCKET_OUTPUT_FLAG | wxSOCKET_LOST_FLAG); } bool wxSocketBase::WaitForLost(long seconds, long milliseconds) { - return DoWait(seconds, milliseconds, GSOCK_LOST_FLAG); + return DoWait(seconds, milliseconds, wxSOCKET_LOST_FLAG); } // -------------------------------------------------------------------------- @@ -1055,10 +1350,10 @@ bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const { GAddress *peer; - if (!m_socket) + if (!m_impl) return false; - peer = m_socket->GetPeer(); + peer = m_impl->GetPeer(); // copying a null address would just trigger an assert anyway @@ -1075,10 +1370,10 @@ bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const { GAddress *local; - if (!m_socket) + if (!m_impl) return false; - local = m_socket->GetLocal(); + local = m_impl->GetLocal(); addr_man.SetAddress(local); GAddress_destroy(local); @@ -1131,8 +1426,8 @@ void wxSocketBase::SetTimeout(long seconds) { m_timeout = seconds; - if (m_socket) - m_socket->SetTimeout(m_timeout * 1000); + if (m_impl) + m_impl->SetTimeout(m_timeout * 1000); } void wxSocketBase::SetFlags(wxSocketFlags flags) @@ -1152,97 +1447,67 @@ void wxSocketBase::SetFlags(wxSocketFlags flags) // Event handling // -------------------------------------------------------------------------- -// A note on how events are processed, which is probably the most -// difficult thing to get working right while keeping the same API -// and functionality for all platforms. -// -// When GSocket detects an event, it calls wx_socket_callback, which in -// turn just calls wxSocketBase::OnRequest in the corresponding wxSocket -// object. OnRequest does some housekeeping, and if the event is to be -// propagated to the user, it creates a new wxSocketEvent object and -// posts it. The event is not processed immediately, but delayed with -// AddPendingEvent instead. This is necessary in order to decouple the -// event processing from wx_socket_callback; otherwise, subsequent IO -// calls made from the user event handler would fail, as gtk callbacks -// are not reentrant. -// -// Note that, unlike events, user callbacks (now deprecated) are _not_ -// decoupled from wx_socket_callback and thus they suffer from a variety -// of problems. Avoid them where possible and use events instead. - -extern "C" -void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket), - GSocketEvent notification, - char *cdata) -{ - wxSocketBase *sckobj = (wxSocketBase *)cdata; - - sckobj->OnRequest((wxSocketNotify) notification); -} - void wxSocketBase::OnRequest(wxSocketNotify notification) { - switch(notification) + wxSocketEventFlags flag = 0; + 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; + flag = wxSOCKET_INPUT_FLAG; break; case wxSOCKET_OUTPUT: - if (m_writing || !m_socket->Select(GSOCK_OUTPUT_FLAG)) - return; + flag = wxSOCKET_OUTPUT_FLAG; break; - case wxSOCKET_LOST: - m_connected = false; - m_establishing = false; + case wxSOCKET_CONNECTION: + flag = wxSOCKET_CONNECTION_FLAG; break; - } - // Schedule the event + case wxSOCKET_LOST: + flag = wxSOCKET_LOST_FLAG; + break; - 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; + wxFAIL_MSG( "unknown wxSocket notification" ); } - if (((m_eventmask & flag) == flag) && m_notify) + // if we lost the connection the socket is now closed + if ( notification == wxSOCKET_LOST ) + m_closed = true; + + // remember the events which were generated for this socket, we're going to + // use this in DoWait() + m_eventsgot |= flag; + + // send the wx event if enabled and we're interested in it + if ( m_notify && (m_eventmask & flag) && m_handler ) { - if (m_handler) + // 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. + if ( notification == wxSOCKET_INPUT ) { - wxSocketEvent event(m_id); - event.m_event = notification; - event.m_clientData = m_clientData; - event.SetEventObject(this); - - m_handler->AddPendingEvent(event); + if ( m_reading || !m_impl->Select(wxSOCKET_INPUT_FLAG) ) + return; } + else if ( notification == wxSOCKET_OUTPUT ) + { + if ( m_writing || !m_impl->Select(wxSOCKET_OUTPUT_FLAG) ) + return; + } + + wxSocketEvent event(m_id); + event.m_event = notification; + event.m_clientData = m_clientData; + event.SetEventObject(this); + + m_handler->AddPendingEvent(event); } } void wxSocketBase::Notify(bool notify) { m_notify = notify; - if (m_socket) - m_socket->Notify(notify); } void wxSocketBase::SetNotify(wxSocketEventFlags flags) @@ -1324,38 +1589,37 @@ wxSocketServer::wxSocketServer(const wxSockAddress& addr_man, { wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") ); - m_socket = GSocket::Create(*this); + m_impl = wxSocketImpl::Create(*this); - if (!m_socket) + if (!m_impl) { - wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") ); + wxLogTrace( wxTRACE_Socket, _T("*** Failed to create m_impl") ); return; } // Setup the socket as server - m_socket->Notify(m_notify); - m_socket->SetLocal(addr_man.GetAddress()); + m_impl->SetLocal(addr_man.GetAddress()); if (GetFlags() & wxSOCKET_REUSEADDR) { - m_socket->SetReusable(); + m_impl->SetReusable(); } if (GetFlags() & wxSOCKET_BROADCAST) { - m_socket->SetBroadcast(); + m_impl->SetBroadcast(); } if (GetFlags() & wxSOCKET_NOBIND) { - m_socket->DontDoBind(); + m_impl->DontDoBind(); } - if (m_socket->SetServer() != GSOCK_NOERROR) + if (m_impl->CreateServer() != wxSOCKET_NOERROR) { - delete m_socket; - m_socket = NULL; + delete m_impl; + m_impl = NULL; - wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") ); + wxLogTrace( wxTRACE_Socket, _T("*** CreateServer() failed") ); return; } - wxLogTrace( wxTRACE_Socket, _T("wxSocketServer on fd %d"), m_socket->m_fd ); + wxLogTrace( wxTRACE_Socket, _T("wxSocketServer on fd %d"), m_impl->m_fd ); } // -------------------------------------------------------------------------- @@ -1364,17 +1628,34 @@ wxSocketServer::wxSocketServer(const wxSockAddress& addr_man, bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait) { - if (!m_socket) + if ( !m_impl || (m_impl->m_fd == INVALID_SOCKET) || !m_impl->IsServer() ) + { + wxFAIL_MSG( "can only be called for a valid server socket" ); + + m_error = wxSOCKET_INVSOCK; + return false; + } - // If wait == false, then the call should be nonblocking. - // When we are finished, we put the socket to blocking mode - // again. - wxSocketUnblocker unblock(m_socket, !wait); - sock.m_socket = m_socket->WaitConnection(sock); + if ( wait ) + { + // wait until we get a connection + if ( !m_impl->SelectWithTimeout(wxSOCKET_INPUT_FLAG) ) + { + m_error = wxSOCKET_TIMEDOUT; + + return false; + } + } + + sock.m_impl = m_impl->Accept(sock); + + if ( !sock.m_impl ) + { + m_error = m_impl->GetLastError(); - if ( !sock.m_socket ) return false; + } sock.m_type = wxSOCKET_BASE; sock.m_connected = true; @@ -1399,32 +1680,30 @@ wxSocketBase *wxSocketServer::Accept(bool wait) bool wxSocketServer::WaitForAccept(long seconds, long milliseconds) { - return DoWait(seconds, milliseconds, GSOCK_CONNECTION_FLAG); + return DoWait(seconds, milliseconds, wxSOCKET_CONNECTION_FLAG); } bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen) { - wxASSERT_MSG( m_socket, _T("Socket not initialised") ); + wxASSERT_MSG( m_impl, _T("Socket not initialised") ); - if (m_socket->GetSockOpt(level, optname, optval, optlen) - != GSOCK_NOERROR) - { + SOCKOPTLEN_T lenreal = *optlen; + if ( getsockopt(m_impl->m_fd, level, optname, + static_cast(optval), &lenreal) != 0 ) return false; - } + + *optlen = lenreal; + return true; } -bool wxSocketBase::SetOption(int level, int optname, const void *optval, - int optlen) +bool +wxSocketBase::SetOption(int level, int optname, const void *optval, int optlen) { - wxASSERT_MSG( m_socket, _T("Socket not initialised") ); + wxASSERT_MSG( m_impl, _T("Socket not initialised") ); - if (m_socket->SetSockOpt(level, optname, optval, optlen) - != GSOCK_NOERROR) - { - return false; - } - return true; + return setsockopt(m_impl->m_fd, level, optname, + static_cast(optval), optlen) == 0; } bool wxSocketBase::SetLocal(const wxIPV4address& local) @@ -1465,71 +1744,56 @@ wxSocketClient::~wxSocketClient() // Connect // -------------------------------------------------------------------------- -bool wxSocketClient::DoConnect(const wxSockAddress& addr_man, +bool wxSocketClient::DoConnect(const wxSockAddress& remote, const wxSockAddress* local, bool wait) { - if (m_socket) + if ( m_impl ) { - // Shutdown and destroy the socket + // Shutdown and destroy the old socket Close(); - delete m_socket; + delete m_impl; } - m_socket = GSocket::Create(*this); m_connected = false; m_establishing = false; - if (!m_socket) + // Create and set up the new one + m_impl = wxSocketImpl::Create(*this); + if ( !m_impl ) return false; - // If wait == false, then the call should be nonblocking. When we are - // finished, we put the socket to blocking mode again. - wxSocketUnblocker unblock(m_socket, !wait); - // Reuse makes sense for clients too, if we are trying to rebind to the same port if (GetFlags() & wxSOCKET_REUSEADDR) - { - m_socket->SetReusable(); - } + m_impl->SetReusable(); if (GetFlags() & wxSOCKET_BROADCAST) - { - m_socket->SetBroadcast(); - } + m_impl->SetBroadcast(); if (GetFlags() & wxSOCKET_NOBIND) - { - m_socket->DontDoBind(); - } + m_impl->DontDoBind(); - // If no local address was passed and one has been set, use the one that was Set - if (!local && m_localAddress.GetAddress()) - { + // Bind to the local IP address and port, when provided or if one had been + // set before + if ( !local && m_localAddress.GetAddress() ) local = &m_localAddress; - } - // Bind to the local IP address and port, when provided - if (local) - { - GAddress* la = local->GetAddress(); + if ( local ) + m_impl->SetLocal(local->GetAddress()); - if (la && la->m_addr) - m_socket->SetLocal(la); - } + m_impl->SetInitialSocketBuffers(m_initialRecvBufferSize, m_initialSendBufferSize); -#if defined(__WXMSW__) || defined(__WXGTK__) - m_socket->SetInitialSocketBuffers(m_initialRecvBufferSize, m_initialSendBufferSize); -#endif + m_impl->SetPeer(remote.GetAddress()); - m_socket->SetPeer(addr_man.GetAddress()); - const GSocketError err = m_socket->Connect(GSOCK_STREAMED); + // Finally do create the socket and connect to the peer + const wxSocketError err = m_impl->CreateClient(wait); - //this will register for callbacks - must be called after m_socket->m_fd was initialized - m_socket->Notify(m_notify); - - if (err != GSOCK_NOERROR) + if ( err != wxSOCKET_NOERROR ) { - if (err == GSOCK_WOULDBLOCK) + if ( err == wxSOCKET_WOULDBLOCK ) + { + wxASSERT_MSG( !wait, "shouldn't get this for blocking connect" ); + m_establishing = true; + } return false; } @@ -1538,16 +1802,16 @@ bool wxSocketClient::DoConnect(const wxSockAddress& addr_man, return true; } -bool wxSocketClient::Connect(const wxSockAddress& addr_man, bool wait) +bool wxSocketClient::Connect(const wxSockAddress& remote, bool wait) { - return DoConnect(addr_man, NULL, wait); + return DoConnect(remote, NULL, wait); } -bool wxSocketClient::Connect(const wxSockAddress& addr_man, +bool wxSocketClient::Connect(const wxSockAddress& remote, const wxSockAddress& local, bool wait) { - return DoConnect(addr_man, &local, wait); + return DoConnect(remote, &local, wait); } bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds) @@ -1559,52 +1823,50 @@ bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds) return true; } - wxCHECK_MSG( m_establishing && m_socket, false, + wxCHECK_MSG( m_establishing && m_impl, false, "No connection establishment attempt in progress" ); - // we must specify GSOCK_LOST_FLAG here explicitly because we must return + // we must specify wxSOCKET_LOST_FLAG here explicitly because we must return // true if the connection establishment process is finished, whether it is // over because we successfully connected or because we were not able to // connect return DoWait(seconds, milliseconds, - GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG); + wxSOCKET_CONNECTION_FLAG | wxSOCKET_LOST_FLAG); } // ========================================================================== // wxDatagramSocket // ========================================================================== -/* NOTE: experimental stuff - might change */ - wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr, wxSocketFlags flags ) : wxSocketBase( flags, wxSOCKET_DATAGRAM ) { // Create the socket - m_socket = GSocket::Create(*this); + m_impl = wxSocketImpl::Create(*this); - if (!m_socket) + if (!m_impl) return; - m_socket->Notify(m_notify); // Setup the socket as non connection oriented - m_socket->SetLocal(addr.GetAddress()); + m_impl->SetLocal(addr.GetAddress()); if (flags & wxSOCKET_REUSEADDR) { - m_socket->SetReusable(); + m_impl->SetReusable(); } if (GetFlags() & wxSOCKET_BROADCAST) { - m_socket->SetBroadcast(); + m_impl->SetBroadcast(); } if (GetFlags() & wxSOCKET_NOBIND) { - m_socket->DontDoBind(); + m_impl->DontDoBind(); } - if ( m_socket->SetNonOriented() != GSOCK_NOERROR ) + + if ( m_impl->CreateUDP() != wxSOCKET_NOERROR ) { - delete m_socket; - m_socket = NULL; + delete m_impl; + m_impl = NULL; return; } @@ -1626,9 +1888,9 @@ wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr, const void* buf, wxUint32 nBytes ) { - wxASSERT_MSG( m_socket, _T("Socket not initialised") ); + wxASSERT_MSG( m_impl, _T("Socket not initialised") ); - m_socket->SetPeer(addr.GetAddress()); + m_impl->SetPeer(addr.GetAddress()); Write(buf, nBytes); return (*this); } @@ -1642,7 +1904,8 @@ class wxSocketModule : public wxModule public: virtual bool OnInit() { - // wxSocketBase will call GSocket_Init() itself when/if needed + // wxSocketBase will call Initialize() itself only if sockets are + // really used, don't do it from here return true; }