-////////////////////////////////////////////////////////////////////////////////
-// Name: socket.cpp
+/////////////////////////////////////////////////////////////////////////////
+// Name: src/common/socket.cpp
// Purpose: Socket handler classes
-// Authors: Guilhem Lavaux (completely rewritten from a basic API of Andrew
-// Davidson(1995) in wxWeb)
+// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia
// Created: April 1997
-// Updated: March 1998
-// Copyright: (C) 1998, 1997, Guilhem Lavaux
+// Copyright: (C) 1999-1997, Guilhem Lavaux
+// (C) 1999-2000, Guillermo Rodriguez Garcia
+// (C) 2008 Vadim Zeitlin
// RCS_ID: $Id$
-// License: see wxWindows license
-////////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "socket.h"
-// #pragma interface
-// #pragma implementation "socket.cpp"
-#endif
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ==========================================================================
+// Declarations
+// ==========================================================================
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
-/////////////////////////////////////////////////////////////////////////////
-// wxWindows headers
-/////////////////////////////////////////////////////////////////////////////
-#include <wx/defs.h>
-#include <wx/object.h>
-#include <wx/string.h>
-#include <wx/timer.h>
-#include <wx/utils.h>
+#if wxUSE_SOCKETS
-// Not enough OS behaviour defined for wxStubs
-#ifndef __WXSTUBS__
+#include "wx/socket.h"
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.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
-/////////////////////////////////////////////////////////////////////////////
-// System specific headers
-/////////////////////////////////////////////////////////////////////////////
-#if defined(__WINDOWS__)
-#include <winsock.h>
-#endif // __WINDOWS__
+#include "wx/apptrait.h"
+#include "wx/sckaddr.h"
+#include "wx/stopwatch.h"
+#include "wx/thread.h"
+#include "wx/evtloop.h"
+#include "wx/link.h"
-#if defined(__UNIX__)
+#include "wx/private/fd.h"
+#include "wx/private/socket.h"
-#ifdef VMS
-#include <socket.h>
-#else
-#include <sys/socket.h>
+#ifdef __UNIX__
+ #include <errno.h>
#endif
-#include <sys/ioctl.h>
-#include <sys/time.h>
-#include <unistd.h>
-
-#ifdef sun
-#include <sys/filio.h>
+// we use MSG_NOSIGNAL to avoid getting SIGPIPE when sending data to a remote
+// host which closed the connection if it is available, otherwise we rely on
+// SO_NOSIGPIPE existency
+//
+// this should cover all the current Unix systems (Windows never sends any
+// signals anyhow) but if we find one that has neither we should explicitly
+// ignore SIGPIPE for it
+// OpenVMS has neither MSG_NOSIGNAL nor SO_NOSIGPIPE. However the socket sample
+// seems to work. Not sure if problems will show up on OpenVMS using sockets.
+#ifdef MSG_NOSIGNAL
+ #define wxSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL
+#else // MSG_NOSIGNAL not available (BSD including OS X)
+ // next best possibility is to use SO_NOSIGPIPE socket option, this covers
+ // BSD systems (including OS X) -- but if we don't have it neither (AIX and
+ // old HP-UX do not), we have to fall back to the old way of simply
+ // disabling SIGPIPE temporarily, so define a class to do it in a safe way
+ #if defined(__UNIX__) && !defined(SO_NOSIGPIPE)
+ extern "C" { typedef void (*wxSigHandler_t)(int); }
+ namespace
+ {
+ class IgnoreSignal
+ {
+ public:
+ // ctor disables the given signal
+ IgnoreSignal(int sig)
+ : m_handler(signal(sig, SIG_IGN)),
+ m_sig(sig)
+ {
+ }
+
+ // dtor restores the old handler
+ ~IgnoreSignal()
+ {
+ signal(m_sig, m_handler);
+ }
+
+ private:
+ const wxSigHandler_t m_handler;
+ const int m_sig;
+
+ wxDECLARE_NO_COPY_CLASS(IgnoreSignal);
+ };
+ } // anonymous namespace
+
+ #define wxNEEDS_IGNORE_SIGPIPE
+ #endif // Unix without SO_NOSIGPIPE
+
+ #define wxSOCKET_MSG_NOSIGNAL 0
#endif
-#endif // __UNIX__
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxNet")
-#include <signal.h>
-#include <errno.h>
+// --------------------------------------------------------------------------
+// macros and constants
+// --------------------------------------------------------------------------
-#ifdef _MSC_VER
-#include <io.h>
-#endif
+// event
+wxDEFINE_EVENT(wxEVT_SOCKET, wxSocketEvent);
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-#include <X11/Intrinsic.h>
+// discard buffer
+#define MAX_DISCARD_SIZE (10 * 1024)
-/////////////////////////////
-// Needs internal variables
-/////////////////////////////
-#ifdef __WXXT__
-#define Uses_XtIntrinsic
-#endif
+#define wxTRACE_Socket wxT("wxSocket")
-#endif
+// --------------------------------------------------------------------------
+// wxWin macros
+// --------------------------------------------------------------------------
-#if defined(__WXGTK__)
-#include <gtk/gtk.h>
-#endif
+IMPLEMENT_CLASS(wxSocketBase, wxObject)
+IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
+IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
+IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)
+IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
-/////////////////////////////////////////////////////////////////////////////
-// wxSocket headers
-/////////////////////////////////////////////////////////////////////////////
-#define WXSOCK_INTERNAL
-#include "wx/sckaddr.h"
-#include "wx/socket.h"
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
-/////////////////////////////////////////////////////////////////////////////
-// Some patch ///// BEGIN
-/////////////////////////////////////////////////////////////////////////////
-#ifdef __WINDOWS__
-#define close closesocket
-#define ioctl ioctlsocket
-#ifdef errno
-#undef errno
-#endif
-#define errno WSAGetLastError()
-#ifdef EWOULDBLOCK
-#undef EWOULDBLOCK
-#endif
-#define EWOULDBLOCK WSAEWOULDBLOCK
-#define ETIMEDOUT WSAETIMEDOUT
-#undef EINTR
-#define EINTR WSAEINTR
-#endif
+namespace
+{
-#ifndef __WINDOWS__
-#define INVALID_SOCKET -1
-#endif
+void SetTimeValFromMS(timeval& tv, unsigned long ms)
+{
+ tv.tv_sec = (ms / 1000);
+ tv.tv_usec = (ms % 1000) * 1000;
+}
-#ifdef __WXMOTIF__
-#define wxAPP_CONTEXT ((XtAppContext)wxTheApp->GetAppContext())
-#endif
+} // anonymous namespace
-#ifdef __WINDOWS__
-// This is an MS TCP/IP routine and is not needed here. Some WinSock
-// implementations (such as PC-NFS) will require you to include this
-// or a similar routine (see appendix in WinSock doc or help file).
+// --------------------------------------------------------------------------
+// private classes
+// --------------------------------------------------------------------------
-#if defined( NEED_WSAFDIsSet ) || defined( _MSC_VER )
-int PASCAL FAR __WSAFDIsSet(SOCKET fd, fd_set FAR *set)
+class wxSocketState : public wxObject
{
- int i = set->fd_count;
+public:
+ wxSocketFlags m_flags;
+ wxSocketEventFlags m_eventmask;
+ bool m_notify;
+ void *m_clientData;
- while (i--)
- {
- if (set->fd_array[i] == fd)
- return 1;
- }
+public:
+ wxSocketState() : wxObject() {}
- return 0;
-}
-#endif
-#endif
+ wxDECLARE_NO_COPY_CLASS(wxSocketState);
+};
-#if defined(__WINDOWS__)
-#define PROCESS_EVENTS() wxYield()
-#elif defined(__WXXT__) || defined(__WXMOTIF__)
-#define PROCESS_EVENTS() XtAppProcessEvent(wxAPP_CONTEXT, XtIMAll)
-#elif defined(__WXGTK__)
-#define PROCESS_EVENTS() gtk_main_iteration()
-#endif
+// wxSocketWaitModeChanger: temporarily change the socket flags affecting its
+// wait mode
+class wxSocketWaitModeChanger
+{
+public:
+ // temporarily set the flags to include the flag value which may be either
+ // wxSOCKET_NOWAIT or wxSOCKET_WAITALL
+ wxSocketWaitModeChanger(wxSocketBase *socket, int flag)
+ : m_socket(socket),
+ m_oldflags(socket->GetFlags())
+
+ {
+ wxASSERT_MSG( flag == wxSOCKET_WAITALL || flag == wxSOCKET_NOWAIT,
+ "not a wait flag" );
+
+ // preserve wxSOCKET_BLOCK value when switching to wxSOCKET_WAITALL
+ // mode but not when switching to wxSOCKET_NOWAIT as the latter is
+ // incompatible with wxSOCKET_BLOCK
+ if ( flag != wxSOCKET_NOWAIT )
+ flag |= m_oldflags & wxSOCKET_BLOCK;
+
+ socket->SetFlags(flag);
+ }
-/////////////////////////////////////////////////////////////////////////////
-// Some patch ///// END
-/////////////////////////////////////////////////////////////////////////////
+ ~wxSocketWaitModeChanger()
+ {
+ m_socket->SetFlags(m_oldflags);
+ }
-// --------------------------------------------------------------
-// ClassInfos
-// --------------------------------------------------------------
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_CLASS(wxSocketBase, wxObject)
-IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
-IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
-IMPLEMENT_CLASS(wxSocketHandler, wxObject)
-IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
-#endif
+private:
+ wxSocketBase * const m_socket;
+ const int m_oldflags;
-class wxSockWakeUp : public wxTimer {
-public:
- int *my_id;
- int n_val;
- wxSocketBase *sock;
-
- wxSockWakeUp(wxSocketBase *_sock, int *id, int new_val) {
- my_id = id; n_val = new_val;
- sock = _sock;
- }
- virtual void Notify() {
- *my_id = n_val;
- if (sock) sock->Notify(FALSE);
- }
+ wxDECLARE_NO_COPY_CLASS(wxSocketWaitModeChanger);
};
-/// Socket request
-class SockRequest : public wxObject {
+// wxSocketRead/WriteGuard are instantiated before starting reading
+// from/writing to the socket
+class wxSocketReadGuard
+{
public:
- char *buffer;
- size_t size, nbytes;
- bool done;
- int error;
- wxSockWakeUp *auto_wakeup;
- wxSocketBase::wxRequestNotify type;
-};
+ wxSocketReadGuard(wxSocketBase *socket)
+ : m_socket(socket)
+ {
+ wxASSERT_MSG( !m_socket->m_reading, "read reentrancy?" );
+ m_socket->m_reading = true;
+ }
-/////////////////////////////////////////////////////////////////////////////
-// Some internal define
-/////////////////////////////////////////////////////////////////////////////
+ ~wxSocketReadGuard()
+ {
+ m_socket->m_reading = false;
-// --------------------------------------------------------------
-// --------- wxSocketBase CONSTRUCTOR ---------------------------
-// --------------------------------------------------------------
-wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
- wxSocketBase::wxSockType _type) :
- wxEvtHandler(),
- m_flags(_flags), m_type(_type), m_connected(FALSE), m_connecting(FALSE),
- m_fd(INVALID_SOCKET), m_waitflags(0), m_cbk(0), m_cdata(0), m_id(-1),
- m_handler(0),
- m_neededreq((wxRequestNotify)(REQ_READ | REQ_LOST)),
- m_cbkon(FALSE),
- m_unread(NULL), m_unrd_size(0),
- m_processing(FALSE),
- m_timeout(3600), m_wantbuf(0)
-{
- m_internal = new wxSockInternal;
-#if defined(__WXXT__) || defined(__WXMOTIF__) || defined(__WXGTK__)
- m_internal->sock_inputid = 0;
- m_internal->sock_outputid = 0;
- m_internal->sock_exceptid = 0;
-#endif
-#ifdef __WINDOWS__
- m_internal->my_msg = 0;
-#endif
-}
+ // connection could have been lost while reading, in this case calling
+ // ReenableEvents() would assert and is not necessary anyhow
+ wxSocketImpl * const impl = m_socket->m_impl;
+ if ( impl && impl->m_fd != INVALID_SOCKET )
+ impl->ReenableEvents(wxSOCKET_INPUT_FLAG);
+ }
-wxSocketBase::wxSocketBase() :
- wxEvtHandler(),
- m_flags(WAITALL), m_type(SOCK_UNINIT), m_connected(FALSE),
- m_connecting(FALSE), m_fd(INVALID_SOCKET), m_waitflags(0),
- m_cbk(0), m_cdata(0),
- m_id(-1), m_handler(0),
- m_neededreq((wxRequestNotify)(REQ_READ | REQ_LOST)),
- m_cbkon(FALSE),
- m_unread(NULL), m_unrd_size(0),
- m_processing(FALSE),
- m_timeout(3600), m_wantbuf(0)
-{
- m_internal = new wxSockInternal;
-#if defined(__WXXT__) || defined(__WXMOTIF__) || defined(__WXGTK__)
- m_internal->sock_inputid = 0;
- m_internal->sock_outputid = 0;
- m_internal->sock_exceptid = 0;
-#endif
-#ifdef __WINDOWS__
- m_internal->my_msg = 0;
-#endif
-}
+private:
+ wxSocketBase * const m_socket;
-// --------------------------------------------------------------
-// --------- wxSocketBase CONSTRUCTOR ---------------------------
-// --------------------------------------------------------------
-wxSocketBase::~wxSocketBase()
+ wxDECLARE_NO_COPY_CLASS(wxSocketReadGuard);
+};
+
+class wxSocketWriteGuard
{
- DestroyCallbacks();
- Close();
+public:
+ wxSocketWriteGuard(wxSocketBase *socket)
+ : m_socket(socket)
+ {
+ wxASSERT_MSG( !m_socket->m_writing, "write reentrancy?" );
- if (m_unread)
- free(m_unread);
- if (m_handler) {
-#ifdef __WINDOWS__
- if (m_internal->my_msg)
- m_handler->DestroyMessage(m_internal->my_msg);
-#endif
- m_handler->UnRegister(this);
- }
- m_states.DeleteContents(TRUE);
+ m_socket->m_writing = true;
+ }
- delete m_internal;
-}
+ ~wxSocketWriteGuard()
+ {
+ m_socket->m_writing = false;
-bool wxSocketBase::Close()
-{
- if (m_fd != INVALID_SOCKET) {
- for (int i=0;i<3;i++) {
- wxNode *n, *node = req_list[i].First();
+ wxSocketImpl * const impl = m_socket->m_impl;
+ if ( impl && impl->m_fd != INVALID_SOCKET )
+ impl->ReenableEvents(wxSOCKET_OUTPUT_FLAG);
+ }
- while (node) {
- SockRequest *req = (SockRequest *)node->Data();
- req->done = TRUE;
+private:
+ wxSocketBase * const m_socket;
- n = node->Next();
- delete node;
- node = n;
- }
- }
+ wxDECLARE_NO_COPY_CLASS(wxSocketWriteGuard);
+};
+
+// ============================================================================
+// wxSocketManager
+// ============================================================================
- DestroyCallbacks();
- shutdown(m_fd, 2);
- close(m_fd);
- m_fd = INVALID_SOCKET;
- m_connected = FALSE;
- }
+wxSocketManager *wxSocketManager::ms_manager = NULL;
- return TRUE;
+/* static */
+void wxSocketManager::Set(wxSocketManager *manager)
+{
+ wxASSERT_MSG( !ms_manager, "too late to set manager now" );
+
+ ms_manager = manager;
}
-// --------------------------------------------------------------
-// --------- wxSocketBase base IO functions ---------------------
-// --------------------------------------------------------------
-wxSocketBase& wxSocketBase::Read(char* buffer, size_t nbytes)
+/* static */
+void wxSocketManager::Init()
{
- m_lcount = GetPushback(buffer, nbytes, FALSE);
+ wxASSERT_MSG( !ms_manager, "shouldn't be initialized twice" );
- // 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;
+ /*
+ Details: Initialize() creates a hidden window as a sink for socket
+ events, such as 'read completed'. wxMSW has only one message loop
+ for the main thread. If Initialize is called in a secondary thread,
+ the socket window will be created for the secondary thread, but
+ since there is no message loop on this thread, it will never
+ receive events and all socket operations will time out.
+ BTW, the main thread must not be stopped using sleep or block
+ on a semaphore (a bad idea in any case) or socket operations
+ will time out.
+
+ On the Mac side, Initialize() stores a pointer to the CFRunLoop for
+ the main thread. Because secondary threads do not have run loops,
+ adding event notifications to the "Current" loop would have no
+ effect at all, events would never fire.
+ */
+ wxASSERT_MSG( wxIsMainThread(),
+ "sockets must be initialized from the main thread" );
- WantBuffer(buffer, nbytes, EVT_READ);
+ wxAppConsole * const app = wxAppConsole::GetInstance();
+ wxCHECK_RET( app, "sockets can't be initialized without wxApp" );
- return *this;
+ ms_manager = app->GetTraits()->GetSocketManager();
}
-wxSocketBase& wxSocketBase::Peek(char* buffer, size_t nbytes)
-{
- size_t nbytes_old = nbytes;
+// ==========================================================================
+// wxSocketImpl
+// ==========================================================================
- nbytes -= GetPushback(buffer, nbytes, TRUE);
- if (!nbytes) {
- m_lcount = nbytes_old;
- return *this;
- }
+wxSocketImpl::wxSocketImpl(wxSocketBase& wxsocket)
+ : m_wxsocket(&wxsocket)
+{
+ m_fd = INVALID_SOCKET;
+ m_error = wxSOCKET_NOERROR;
+ m_server = false;
+ m_stream = true;
- WantBuffer(buffer, nbytes, EVT_PEEK);
+ SetTimeout(wxsocket.GetTimeout() * 1000);
- return *this;
+ m_establishing = false;
+ m_reusable = false;
+ m_broadcast = false;
+ m_dobind = true;
+ m_initialRecvBufferSize = -1;
+ m_initialSendBufferSize = -1;
}
-wxSocketBase& wxSocketBase::Write(const char *buffer, size_t nbytes)
+wxSocketImpl::~wxSocketImpl()
{
- WantBuffer((char *)buffer, nbytes, EVT_WRITE);
- return *this;
+ if ( m_fd != INVALID_SOCKET )
+ Shutdown();
}
-wxSocketBase& wxSocketBase::ReadMsg(char* buffer, size_t nbytes)
+bool wxSocketImpl::PreCreateCheck(const wxSockAddressImpl& addr)
{
- SockMsg msg;
- size_t len, len2, sig;
-
- Read((char *)&msg, sizeof(msg));
- if (m_lcount != sizeof(msg))
- return *this;
-
- sig = msg.sig[0] & 0xff;
- sig |= (size_t)(msg.sig[1] & 0xff) << 8;
- sig |= (size_t)(msg.sig[2] & 0xff) << 16;
- sig |= (size_t)(msg.sig[3] & 0xff) << 24;
-
- if (sig != 0xfeeddead)
- return *this;
- len = msg.len[0] & 0xff;
- len |= (size_t)(msg.len[1] & 0xff) << 8;
- len |= (size_t)(msg.len[2] & 0xff) << 16;
- len |= (size_t)(msg.len[3] & 0xff) << 24;
- len2 = len;
- if (len > nbytes)
- len = nbytes;
- else
- len2 = 0;
-
- if (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;
+ if ( m_fd != INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_INVSOCK;
+ return false;
+ }
- sig = msg.sig[0] & 0xff;
- sig |= (size_t)(msg.sig[1] & 0xff) << 8;
- sig |= (size_t)(msg.sig[2] & 0xff) << 16;
- sig |= (size_t)(msg.sig[3] & 0xff) << 24;
-// ERROR
- if (sig != 0xdeadfeed)
- return *this;
+ if ( !addr.IsOk() )
+ {
+ m_error = wxSOCKET_INVADDR;
+ return false;
+ }
- return *this;
+ return true;
}
-wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, size_t nbytes)
+void wxSocketImpl::PostCreation()
{
- SockMsg msg;
+ // FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option
+#ifdef SO_NOSIGPIPE
+ EnableSocketOption(SO_NOSIGPIPE);
+#endif
- msg.sig[0] = (char) 0xad;
- msg.sig[1] = (char) 0xde;
- msg.sig[2] = (char) 0xed;
- msg.sig[3] = (char) 0xfe;
+ if ( m_reusable )
+ EnableSocketOption(SO_REUSEADDR);
- 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 ( m_broadcast )
+ {
+ wxASSERT_MSG( !m_stream, "broadcasting is for datagram sockets only" );
- if (Write((char *)&msg, sizeof(msg)).LastCount() < sizeof(msg))
- return *this;
- if (Write(buffer, nbytes).LastCount() < nbytes)
- return *this;
+ EnableSocketOption(SO_BROADCAST);
+ }
- 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));
+ if ( m_initialRecvBufferSize >= 0 )
+ SetSocketOption(SO_RCVBUF, m_initialRecvBufferSize);
+ if ( m_initialSendBufferSize >= 0 )
+ SetSocketOption(SO_SNDBUF, m_initialSendBufferSize);
- return *this;
+ // we always put our sockets in unblocked mode and handle blocking
+ // ourselves in DoRead/Write() if wxSOCKET_WAITALL is specified
+ UnblockAndRegisterWithEventLoop();
}
-wxSocketBase& wxSocketBase::Unread(const char *buffer, size_t nbytes)
+wxSocketError wxSocketImpl::UpdateLocalAddress()
{
- CreatePushbackAfter(buffer, nbytes);
- return *this;
-}
-
-bool wxSocketBase::IsData() const
-{
- struct timeval tv;
- fd_set sock_set;
+ if ( !m_local.IsOk() )
+ {
+ // ensure that we have a valid object using the correct family: correct
+ // being the same one as our peer uses as we have no other way to
+ // determine it
+ m_local.Create(m_peer.GetFamily());
+ }
- if (m_fd < 0)
- return FALSE;
- if (m_unrd_size > 0)
- return TRUE;
+ WX_SOCKLEN_T lenAddr = m_local.GetLen();
+ if ( getsockname(m_fd, m_local.GetWritableAddr(), &lenAddr) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
- tv.tv_sec = 0;
- tv.tv_usec = 0;
- FD_ZERO(&sock_set);
- FD_SET(m_fd, &sock_set);
- select(FD_SETSIZE, &sock_set, NULL, NULL, &tv);
- return (FD_ISSET(m_fd, &sock_set) != 0);
+ return wxSOCKET_NOERROR;
}
-// ---------------------------------------------------------------------
-// --------- wxSocketBase Discard(): deletes all byte in the input queue
-// ---------------------------------------------------------------------
-void wxSocketBase::Discard()
+wxSocketError wxSocketImpl::CreateServer()
{
-#define MAX_BUFSIZE (10*1024)
- char *my_data = new char[MAX_BUFSIZE];
- size_t recv_size = MAX_BUFSIZE;
+ if ( !PreCreateCheck(m_local) )
+ return m_error;
- SaveState();
- SetFlags((wxSockFlags)(NOWAIT | SPEED));
+ m_server = true;
+ m_stream = true;
- while (recv_size == MAX_BUFSIZE) {
- recv_size = Read(my_data, MAX_BUFSIZE).LastCount();
- }
+ // do create the socket
+ m_fd = socket(m_local.GetFamily(), SOCK_STREAM, 0);
- RestoreState();
- delete [] my_data;
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
-#undef MAX_BUFSIZE
-}
+ PostCreation();
-// --------------------------------------------------------------
-// --------- wxSocketBase socket info functions -----------------
-// --------------------------------------------------------------
-bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
-{
- struct sockaddr my_addr;
- size_t len_addr = sizeof(my_addr);
+ // and then bind to and listen on it
+ //
+ // FIXME: should we test for m_dobind here?
+ if ( bind(m_fd, m_local.GetAddr(), m_local.GetLen()) != 0 )
+ m_error = wxSOCKET_IOERR;
- if (m_fd < 0)
- return FALSE;
+ if ( IsOk() )
+ {
+ if ( listen(m_fd, 5) != 0 )
+ m_error = wxSOCKET_IOERR;
+ }
- if (getpeername(m_fd, (struct sockaddr *)&my_addr, (int *)&len_addr) < 0)
- return FALSE;
+ if ( !IsOk() )
+ {
+ Close();
+ return m_error;
+ }
- addr_man.Disassemble(&my_addr, len_addr);
- return TRUE;
+ // finally retrieve the address we effectively bound to
+ return UpdateLocalAddress();
}
-bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
+wxSocketError wxSocketImpl::CreateClient(bool wait)
{
- struct sockaddr my_addr;
- size_t len_addr = sizeof(my_addr);
+ if ( !PreCreateCheck(m_peer) )
+ return m_error;
+
+ m_fd = socket(m_peer.GetFamily(), SOCK_STREAM, 0);
+
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
- if (m_fd < 0)
- return FALSE;
+ PostCreation();
+
+ // If a local address has been set, then bind to it before calling connect
+ if ( m_local.IsOk() )
+ {
+ if ( bind(m_fd, m_local.GetAddr(), m_local.GetLen()) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
+ }
- if (getsockname(m_fd, (struct sockaddr *)&my_addr, (int *)&len_addr) < 0)
- return FALSE;
+ // Do connect now
+ int rc = connect(m_fd, m_peer.GetAddr(), m_peer.GetLen());
+ 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;
+ }
- addr_man.Disassemble(&my_addr, len_addr);
- return TRUE;
+ return m_error;
}
-// --------------------------------------------------------------
-// --------- wxSocketBase wait functions ------------------------
-// --------------------------------------------------------------
-void wxSocketBase::SaveState()
+
+wxSocketError wxSocketImpl::CreateUDP()
{
- wxSockState *state = new wxSockState;
+ if ( !PreCreateCheck(m_local) )
+ return m_error;
- state->cbk_on = m_cbkon;
- state->cbk_set= m_neededreq;
- state->cbk = m_cbk;
- state->cdata = m_cdata;
- state->flags = m_flags;
- state->notif = m_notifyme;
+ m_stream = false;
+ m_server = false;
- m_states.Append(state);
-}
+ m_fd = socket(m_local.GetFamily(), SOCK_DGRAM, 0);
-void wxSocketBase::RestoreState()
-{
- wxNode *node;
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
- node = m_states.Last();
- if (!node)
- return;
+ PostCreation();
- wxSockState *state = (wxSockState *)node->Data();
+ if ( m_dobind )
+ {
+ if ( bind(m_fd, m_local.GetAddr(), m_local.GetLen()) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
- SetFlags(state->flags);
- m_neededreq = state->cbk_set;
- m_cbk = state->cbk;
- m_cdata = state->cdata;
- m_notifyme = state->notif;
- if (state->cbk_on)
- SetupCallbacks();
- else
- DestroyCallbacks();
+ return UpdateLocalAddress();
+ }
- delete node;
- delete state;
+ return wxSOCKET_NOERROR;
}
-// --------------------------------------------------------------
-// --------- wxSocketBase wait functions ------------------------
-// --------------------------------------------------------------
-//
-bool wxSocketBase::_Wait(long seconds, long microseconds, int type)
+wxSocketImpl *wxSocketImpl::Accept(wxSocketBase& wxsocket)
{
- if ((!m_connected && !m_connecting) || m_fd < 0)
- return FALSE;
+ wxSockAddressStorage from;
+ WX_SOCKLEN_T fromlen = sizeof(from);
+ const SOCKET fd = accept(m_fd, &from.addr, &fromlen);
- wxSockWakeUp wakeup(this, &m_waitflags, 0);
+ // accepting is similar to reading in the sense that it resets "ready for
+ // read" flag on the socket
+ ReenableEvents(wxSOCKET_INPUT_FLAG);
- SaveState();
- SetNotify((wxRequestNotify)type);
- SetupCallbacks();
+ if ( fd == INVALID_SOCKET )
+ return NULL;
- if (seconds != -1)
- wakeup.Start((int)(seconds*1000 + (microseconds / 1000)), TRUE);
+ wxSocketManager * const manager = wxSocketManager::Get();
+ if ( !manager )
+ return NULL;
- m_waitflags = 0x80 | type;
- while (m_waitflags & 0x80)
- PROCESS_EVENTS();
+ wxSocketImpl * const sock = manager->CreateSocket(wxsocket);
+ if ( !sock )
+ return NULL;
- RestoreState();
+ sock->m_fd = fd;
+ sock->m_peer = wxSockAddressImpl(from.addr, fromlen);
- if (m_waitflags & 0x40) {
- m_waitflags = 0;
- return TRUE;
- }
- m_waitflags = 0;
+ sock->UnblockAndRegisterWithEventLoop();
- return FALSE;
+ return sock;
}
-bool wxSocketBase::Wait(long seconds, long microseconds)
+
+void wxSocketImpl::Close()
{
- return _Wait(seconds, microseconds, REQ_ACCEPT | REQ_CONNECT |
- REQ_READ | REQ_WRITE | REQ_LOST);
+ if ( m_fd != INVALID_SOCKET )
+ {
+ DoClose();
+ m_fd = INVALID_SOCKET;
+ }
}
-bool wxSocketBase::WaitForRead(long seconds, long microseconds)
+void wxSocketImpl::Shutdown()
{
- return _Wait(seconds, microseconds, REQ_READ | REQ_LOST);
+ if ( m_fd != INVALID_SOCKET )
+ {
+ shutdown(m_fd, 1 /* SD_SEND */);
+ Close();
+ }
}
-bool wxSocketBase::WaitForWrite(long seconds, long microseconds)
+/*
+ * Sets the timeout for blocking calls. Time is expressed in
+ * milliseconds.
+ */
+void wxSocketImpl::SetTimeout(unsigned long millis)
{
- return _Wait(seconds, microseconds, REQ_WRITE);
+ SetTimeValFromMS(m_timeout, millis);
}
-bool wxSocketBase::WaitForLost(long seconds, long microseconds)
+void wxSocketImpl::NotifyOnStateChange(wxSocketNotify event)
{
- return _Wait(seconds, microseconds, REQ_LOST);
+ m_wxsocket->OnRequest(event);
}
-// --------------------------------------------------------------
-// --------- wxSocketBase callback management -------------------
-// --------------------------------------------------------------
-
-#if defined(__WXMOTIF__) || defined(__WXXT__) || defined(__WXGTK__)
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-static void wx_socket_read(XtPointer client, int *fid,
- XtInputId *WXUNUSED(id))
-#define fd *fid
-#else
-static void wx_socket_read(gpointer client, gint fd,
- GdkInputCondition WXUNUSED(cond))
-#define fd fd
-#endif
+/* Address handling */
+wxSocketError wxSocketImpl::SetLocal(const wxSockAddressImpl& local)
{
- wxSocketBase *sock = (wxSocketBase *)client;
- char c;
- int i;
+ /* 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;
+ }
- i = recv(fd, &c, 1, MSG_PEEK);
+ if ( !local.IsOk() )
+ {
+ m_error = wxSOCKET_INVADDR;
+ return wxSOCKET_INVADDR;
+ }
- if (i == -1 && (sock->NeededReq() & wxSocketBase::REQ_ACCEPT)) {
- sock->OnRequest(wxSocketBase::EVT_ACCEPT);
- return;
- }
+ m_local = local;
- if (i != 0) {
- if (!(sock->NeededReq() & wxSocketBase::REQ_READ))
- return;
+ return wxSOCKET_NOERROR;
+}
- sock->OnRequest(wxSocketBase::EVT_READ);
- } else {
- if (!(sock->NeededReq() & wxSocketBase::REQ_LOST)) {
- sock->Close();
- return;
+wxSocketError wxSocketImpl::SetPeer(const wxSockAddressImpl& peer)
+{
+ if ( !peer.IsOk() )
+ {
+ m_error = wxSOCKET_INVADDR;
+ return wxSOCKET_INVADDR;
}
- sock->OnRequest(wxSocketBase::EVT_LOST);
- }
+ m_peer = peer;
+
+ return wxSOCKET_NOERROR;
+}
+
+const wxSockAddressImpl& wxSocketImpl::GetLocal()
+{
+ if ( !m_local.IsOk() )
+ UpdateLocalAddress();
+
+ return m_local;
}
-#undef fd
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-static void wx_socket_write(XtPointer client, int *WXUNUSED(fid),
- XtInputId *WXUNUSED(id))
+// ----------------------------------------------------------------------------
+// wxSocketImpl IO
+// ----------------------------------------------------------------------------
+
+// this macro wraps the given expression (normally a syscall) in a loop which
+// ignores any interruptions, i.e. reevaluates it again if it failed and errno
+// is EINTR
+#ifdef __UNIX__
+ #define DO_WHILE_EINTR( rc, syscall ) \
+ do { \
+ rc = (syscall); \
+ } \
+ while ( rc == -1 && errno == EINTR )
#else
-static void wx_socket_write(gpointer client, gint WXUNUSED(fd),
- GdkInputCondition WXUNUSED(cond))
+ #define DO_WHILE_EINTR( rc, syscall ) rc = (syscall)
#endif
+
+int wxSocketImpl::RecvStream(void *buffer, int size)
{
- wxSocketBase *sock = (wxSocketBase *)client;
+ int ret;
+ DO_WHILE_EINTR( ret, recv(m_fd, static_cast<char *>(buffer), size, 0) );
+
+ if ( !ret )
+ {
+ // receiving 0 bytes for a TCP socket indicates that the connection was
+ // closed by peer so shut down our end as well (for UDP sockets empty
+ // datagrams are also possible)
+ m_establishing = false;
+ NotifyOnStateChange(wxSOCKET_LOST);
- if (!sock->IsConnected())
- sock->OnRequest(wxSocketBase::EVT_CONNECT);
- else
- sock->OnRequest(wxSocketBase::EVT_WRITE);
+ Shutdown();
+
+ // do not return an error in this case however
+ }
+
+ return ret;
}
+
+int wxSocketImpl::SendStream(const void *buffer, int size)
+{
+#ifdef wxNEEDS_IGNORE_SIGPIPE
+ IgnoreSignal ignore(SIGPIPE);
#endif
-#ifdef wx_xview
-Notify_value wx_sock_read_xview (Notify_client client, int fd)
+ int ret;
+ DO_WHILE_EINTR( ret, send(m_fd, static_cast<const char *>(buffer), size,
+ wxSOCKET_MSG_NOSIGNAL) );
+
+ return ret;
+}
+
+int wxSocketImpl::RecvDgram(void *buffer, int size)
{
- wxSocketBase *sock = (wxSocketBase *)client;
- char c;
- int i;
+ wxSockAddressStorage from;
+ WX_SOCKLEN_T fromlen = sizeof(from);
+
+ int ret;
+ DO_WHILE_EINTR( ret, recvfrom(m_fd, static_cast<char *>(buffer), size,
+ 0, &from.addr, &fromlen) );
- i = recv(fd, &c, 1, MSG_PEEK);
+ if ( ret == SOCKET_ERROR )
+ return SOCKET_ERROR;
- if (i == -1 && (sock->NeededReq() & wxSocketBase::REQ_ACCEPT)) {
- sock->OnRequest(wxSocketBase::EVT_ACCEPT);
- return;
- }
+ m_peer = wxSockAddressImpl(from.addr, fromlen);
+ if ( !m_peer.IsOk() )
+ return -1;
- /* Bytes arrived */
- if (i != 0) {
- if (!(sock->NeededReq() & wxSocketBase::REQ_READ))
- return (Notify_value) FALSE;
+ return ret;
+}
- sock->OnRequest(wxSocketBase::EVT_READ);
- } else {
- if (!(sock->NeededReq() & wxSocketBase::REQ_LOST))
- return;
+int wxSocketImpl::SendDgram(const void *buffer, int size)
+{
+ if ( !m_peer.IsOk() )
+ {
+ m_error = wxSOCKET_INVADDR;
+ return -1;
+ }
- sock->OnRequest(wxSocketBase::EVT_LOST);
- }
+ int ret;
+ DO_WHILE_EINTR( ret, sendto(m_fd, static_cast<const char *>(buffer), size,
+ 0, m_peer.GetAddr(), m_peer.GetLen()) );
- return (Notify_value) FALSE;
+ return ret;
}
-Notify_value wx_sock_write_xview (Notify_client client, int fd)
+int wxSocketImpl::Read(void *buffer, int size)
{
- wxSocketBase *sock = (wxSocketBase *)client;
+ // server sockets can't be used for IO, only to accept new connections
+ if ( m_fd == INVALID_SOCKET || m_server )
+ {
+ m_error = wxSOCKET_INVSOCK;
+ return -1;
+ }
+
+ int ret = m_stream ? RecvStream(buffer, size)
+ : RecvDgram(buffer, size);
- if (!sock->IsConnected())
- sock->OnRequest(wxSocketBase::EVT_CONNECT);
- else
- sock->OnRequest(wxSocketBase::EVT_WRITE);
+ m_error = ret == SOCKET_ERROR ? GetLastError() : wxSOCKET_NOERROR;
- return (Notify_value) TRUE;
+ return ret;
}
-#endif
-wxSocketBase::wxRequestNotify wxSocketBase::EventToNotify(wxRequestEvent evt)
-{
- switch (evt) {
- case EVT_READ:
- return REQ_READ;
- case EVT_PEEK:
- return REQ_PEEK;
- case EVT_WRITE:
- return REQ_WRITE;
- case EVT_LOST:
- return REQ_LOST;
- case EVT_ACCEPT:
- return REQ_ACCEPT;
- case EVT_CONNECT:
- return REQ_CONNECT;
- }
- return 0;
-}
-
-void wxSocketBase::SetFlags(wxSockFlags _flags)
-{
- m_flags = _flags;
- if (_flags & SPEED) {
- unsigned long flag = 0;
- ioctl(m_fd, FIONBIO, &flag);
-
- // SPEED and WAITALL are antagonists.
- m_flags = (wxSockFlags)(m_flags & ~WAITALL);
-
- Notify(FALSE);
- } else {
- unsigned long flag = 1;
- ioctl(m_fd, FIONBIO, &flag);
- }
-}
-
-void wxSocketBase::SetNotify(wxRequestNotify flags)
-{
- wxRequestNotify old_needed_req = m_neededreq;
- if (flags & REQ_ACCEPT) {
- /* Check if server */
- if (!(GetClassInfo()->IsKindOf(CLASSINFO(wxSocketServer))))
- flags &= ~REQ_ACCEPT;
- }
- m_neededreq = flags;
- if (m_cbkon && old_needed_req != flags)
- SetupCallbacks();
-}
-
-void wxSocketBase::SetupCallbacks()
-{
- if (m_fd == INVALID_SOCKET || !m_handler || (m_flags & SPEED))
- return;
-
-#if defined(__WXMOTIF__) || defined(__WXXT__) || defined(__WXGTK__)
- if (m_cbkon)
- DestroyCallbacks();
- if (m_neededreq & (REQ_ACCEPT | REQ_READ | REQ_LOST)) {
-#ifdef __WXGTK__
- m_internal->sock_inputid = gdk_input_add(m_fd, GDK_INPUT_READ,
- wx_socket_read, (gpointer)this);
-#else
- m_internal->sock_inputid = XtAppAddInput (wxAPP_CONTEXT, m_fd,
- (XtPointer *) XtInputReadMask,
- (XtInputCallbackProc) wx_socket_read,
- (XtPointer) this);
-#endif
- }
- if (m_neededreq & (REQ_CONNECT | REQ_WRITE)) {
-#ifdef __WXGTK__
- m_internal->sock_inputid = gdk_input_add(m_fd, GDK_INPUT_WRITE,
- wx_socket_write, (gpointer)this);
-#else
- m_internal->sock_outputid = XtAppAddInput (wxAPP_CONTEXT, m_fd,
- (XtPointer *) XtInputWriteMask,
- (XtInputCallbackProc) wx_socket_write,
- (XtPointer) this);
-#endif
- }
-#endif
-#ifdef __WINDOWS__
- WORD mask = 0;
-
- if (m_neededreq & REQ_READ)
- mask |= FD_READ;
- if (m_neededreq & REQ_WRITE)
- mask |= FD_WRITE;
- if (m_neededreq & REQ_LOST)
- mask |= FD_CLOSE;
- if (m_neededreq & REQ_ACCEPT)
- mask |= FD_ACCEPT;
- if (m_neededreq & REQ_CONNECT)
- mask |= FD_CONNECT;
-
- if (!m_internal->my_msg)
- m_internal->my_msg = m_handler->NewMessage(this);
- WSAAsyncSelect(m_fd, m_handler->GetHWND(), m_internal->my_msg, mask);
-#endif
- m_cbkon = TRUE;
- m_processing = FALSE;
-}
-
-void wxSocketBase::DestroyCallbacks()
-{
- if (!m_cbkon || !m_handler)
- return;
- m_cbkon = FALSE;
- m_processing = FALSE;
-#if defined(__WXMOTIF__) || defined(__WXXT__)
- if (m_internal->sock_inputid > 0)
- XtRemoveInput(m_internal->sock_inputid);
- m_internal->sock_inputid = 0;
- if (m_internal->sock_outputid > 0)
- XtRemoveInput(m_internal->sock_outputid);
- m_internal->sock_outputid = 0;
-#endif
-#ifdef __WXGTK__
- if (m_internal->sock_inputid > 0)
- gdk_input_remove(m_internal->sock_inputid);
- m_internal->sock_inputid = 0;
- if (m_internal->sock_outputid > 0)
- gdk_input_remove(m_internal->sock_outputid);
- m_internal->sock_outputid = 0;
-#endif
-#ifdef __WINDOWS__
- WSAAsyncSelect(m_fd, m_handler->GetHWND(), 0, 0);
-#endif
+int wxSocketImpl::Write(const void *buffer, int size)
+{
+ if ( m_fd == INVALID_SOCKET || m_server )
+ {
+ m_error = wxSOCKET_INVSOCK;
+ return -1;
+ }
+
+ int ret = m_stream ? SendStream(buffer, size)
+ : SendDgram(buffer, size);
+
+ m_error = ret == SOCKET_ERROR ? GetLastError() : wxSOCKET_NOERROR;
+
+ return ret;
}
-void wxSocketBase::Notify(bool notify)
+// ==========================================================================
+// wxSocketBase
+// ==========================================================================
+
+// --------------------------------------------------------------------------
+// Initialization and shutdown
+// --------------------------------------------------------------------------
+
+namespace
{
- if (m_notifyme == notify)
- return;
- if (notify)
- SetupCallbacks();
- else
- DestroyCallbacks();
- m_notifyme = notify;
+
+// counts the number of calls to Initialize() minus the number of calls to
+// Shutdown(): we don't really need it any more but it was documented that
+// Shutdown() must be called the same number of times as Initialize() and using
+// a counter helps us to check it
+int gs_socketInitCount = 0;
+
+} // anonymous namespace
+
+bool wxSocketBase::IsInitialized()
+{
+ wxASSERT_MSG( wxIsMainThread(), "unsafe to call from other threads" );
+
+ return gs_socketInitCount != 0;
}
-void wxSocketBase::OnRequest(wxRequestEvent req_evt)
+bool wxSocketBase::Initialize()
{
- wxRequestNotify req_notif = EventToNotify(req_evt);
+ wxCHECK_MSG( wxIsMainThread(), false,
+ "must be called from the main thread" );
- // Mask the current event
- SetNotify(m_neededreq & ~req_notif);
+ if ( !gs_socketInitCount )
+ {
+ wxSocketManager * const manager = wxSocketManager::Get();
+ if ( !manager || !manager->OnInit() )
+ return false;
+ }
- if (req_evt <= EVT_WRITE && DoRequests(req_evt))
- return;
+ gs_socketInitCount++;
- if (m_waitflags & 0xF0) {
- // Wake up
- if ((m_waitflags & 0x0F) == req_evt) {
- m_waitflags = 0x80;
-#ifndef __WXGTK__
- DestroyCallbacks(); // I disable it to prevent infinite loop on X11.
-#endif
+ return true;
+}
+
+void wxSocketBase::Shutdown()
+{
+ wxCHECK_RET( wxIsMainThread(), "must be called from the main thread" );
+
+ wxCHECK_RET( gs_socketInitCount > 0, "too many calls to Shutdown()" );
+
+ if ( !--gs_socketInitCount )
+ {
+ wxSocketManager * const manager = wxSocketManager::Get();
+ wxCHECK_RET( manager, "should have a socket manager" );
+
+ manager->OnExit();
}
- return;
- }
+}
- if (req_evt == EVT_LOST) {
- m_connected = FALSE;
- Close();
- }
- if (m_notifyme)
- OldOnNotify(req_evt);
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------
+
+void wxSocketBase::Init()
+{
+ m_impl = NULL;
+ m_type = wxSOCKET_UNINIT;
+
+ // state
+ m_flags = 0;
+ m_connected =
+ m_establishing =
+ m_reading =
+ m_writing =
+ m_closed = 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 =
+ m_eventsgot = 0;
+
+ // when we create the first socket in the main thread we initialize the
+ // OS-dependent socket stuff: notice that this means that the user code
+ // needs to call wxSocket::Initialize() itself if the first socket it
+ // creates is not created in the main thread
+ if ( wxIsMainThread() )
+ {
+ if ( !Initialize() )
+ {
+ wxLogError(_("Cannot initialize sockets"));
+ }
+ }
+}
- // Unmask
- SetNotify(m_neededreq | req_notif);
+wxSocketBase::wxSocketBase()
+{
+ Init();
}
-wxSocketEvent::wxSocketEvent(int id)
- : wxEvent(id)
+wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
{
- wxEventType type = (wxEventType)wxEVT_SOCKET;
+ Init();
+
+ SetFlags(flags);
- SetEventType(type);
+ m_type = type;
}
-void wxSocketBase::OldOnNotify(wxRequestEvent evt)
+wxSocketBase::~wxSocketBase()
{
- wxSocketEvent event(m_id);
+ // Shutdown and close the socket
+ if (!m_beingDeleted)
+ Close();
- event.SetEventObject(this);
- event.m_skevt = evt;
- ProcessEvent(event);
+ // Destroy the implementation object
+ delete m_impl;
- if (m_cbk)
- m_cbk(*this, evt, m_cdata);
+ // Free the pushback buffer
+ free(m_unread);
}
-// --------------------------------------------------------------
-// --------- wxSocketBase functions [Callback, CallbackData] ----
-// --------------------------------------------------------------
-wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSocketBase::wxSockCbk _cbk)
+bool wxSocketBase::Destroy()
{
- wxSockCbk old_cbk = m_cbk;
+ // 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;
+
+ // Shutdown and close the socket
+ Close();
+
+ // Suppress events from now on
+ Notify(false);
+
+ // Schedule this object for deletion instead of destroying it right now if
+ // possible as we may have other events pending for it
+ if ( wxTheApp )
+ {
+ wxTheApp->ScheduleForDestruction(this);
+ }
+ else // no app
+ {
+ // in wxBase we might have no app object at all, don't leak memory
+ delete this;
+ }
- m_cbk = _cbk;
- return old_cbk;
+ return true;
}
-char *wxSocketBase::CallbackData(char *cdata_)
+// ----------------------------------------------------------------------------
+// simple accessors
+// ----------------------------------------------------------------------------
+
+void wxSocketBase::SetError(wxSocketError error)
{
- char *old_cdata = m_cdata;
+ m_impl->m_error = error;
+}
- m_cdata = cdata_;
- return old_cdata;
+wxSocketError wxSocketBase::LastError() const
+{
+ return m_impl->GetError();
}
-void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
+// --------------------------------------------------------------------------
+// Basic IO calls
+// --------------------------------------------------------------------------
+
+// The following IO operations update m_lcount:
+// {Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard}
+bool wxSocketBase::Close()
{
- SetNextHandler(&h_evt);
- m_id = id;
+ // Interrupt pending waits
+ InterruptWait();
+
+ ShutdownOutput();
+
+ m_connected = false;
+ m_establishing = false;
+ return true;
+}
+
+void wxSocketBase::ShutdownOutput()
+{
+ if ( m_impl )
+ m_impl->Shutdown();
}
-// --------------------------------------------------------------
-// --------- wxSocketBase pushback library ----------------------
-// --------------------------------------------------------------
-void wxSocketBase::CreatePushbackAfter(const char *buffer, size_t size)
+wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes)
{
- char *curr_pos;
+ wxSocketReadGuard read(this);
- m_unread = (char *) realloc(m_unread, m_unrd_size+size);
- curr_pos = m_unread + m_unrd_size;
+ m_lcount = DoRead(buffer, nbytes);
- memcpy(curr_pos, buffer, size);
- m_unrd_size += size;
+ return *this;
}
-void wxSocketBase::CreatePushbackBefore(const char *buffer, size_t size)
+wxUint32 wxSocketBase::DoRead(void* buffer_, wxUint32 nbytes)
+{
+ wxCHECK_MSG( m_impl, 0, "socket must be valid" );
+
+ // We use pointer arithmetic here which doesn't work with void pointers.
+ char *buffer = static_cast<char *>(buffer_);
+ wxCHECK_MSG( buffer, 0, "NULL buffer" );
+
+ // Try the push back buffer first, even before checking whether the socket
+ // is valid to allow reading previously pushed back data from an already
+ // closed socket.
+ wxUint32 total = GetPushback(buffer, nbytes, false);
+ nbytes -= total;
+ buffer += total;
+
+ while ( nbytes )
+ {
+ // our socket is non-blocking so Read() will return immediately if
+ // there is nothing to read yet and it's more efficient to try it first
+ // before entering DoWait() which is going to start dispatching GUI
+ // events and, even more importantly, we must do this under Windows
+ // where we're not going to get notifications about socket being ready
+ // for reading before we read all the existing data from it
+ const int ret = !m_impl->m_stream || m_connected
+ ? m_impl->Read(buffer, nbytes)
+ : 0;
+ if ( ret == -1 )
+ {
+ if ( m_impl->GetLastError() == wxSOCKET_WOULDBLOCK )
+ {
+ // if we don't want to wait, just return immediately
+ if ( m_flags & wxSOCKET_NOWAIT )
+ {
+ // this shouldn't be counted as an error in this case
+ SetError(wxSOCKET_NOERROR);
+ break;
+ }
+
+ // otherwise wait until the socket becomes ready for reading or
+ // an error occurs on it
+ if ( !DoWaitWithTimeout(wxSOCKET_INPUT_FLAG) )
+ {
+ // and exit if the timeout elapsed before it did
+ SetError(wxSOCKET_TIMEDOUT);
+ break;
+ }
+
+ // retry reading
+ continue;
+ }
+ else // "real" error
+ {
+ SetError(wxSOCKET_IOERR);
+ break;
+ }
+ }
+ else if ( ret == 0 )
+ {
+ // for connection-oriented (e.g. TCP) sockets we can only read
+ // 0 bytes if the other end has been closed, and for connectionless
+ // ones (UDP) this flag doesn't make sense anyhow so we can set it
+ // to true too without doing any harm
+ m_closed = true;
+
+ // we're not going to read anything else and so if we haven't read
+ // anything (or not everything in wxSOCKET_WAITALL case) already,
+ // signal an error
+ if ( (m_flags & wxSOCKET_WAITALL) || !total )
+ SetError(wxSOCKET_IOERR);
+ break;
+ }
+
+ total += ret;
+
+ // if we are happy to read something and not the entire nbytes bytes,
+ // then we're done
+ if ( !(m_flags & wxSOCKET_WAITALL) )
+ break;
+
+ nbytes -= ret;
+ buffer += ret;
+ }
+
+ return total;
+}
+
+wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes)
+{
+ struct
+ {
+ unsigned char sig[4];
+ unsigned char len[4];
+ } msg;
+
+ wxSocketReadGuard read(this);
+
+ wxSocketWaitModeChanger changeFlags(this, wxSOCKET_WAITALL);
+
+ bool ok = false;
+ if ( DoRead(&msg, sizeof(msg)) == sizeof(msg) )
+ {
+ wxUint32 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 )
+ {
+ wxUint32 len = (wxUint32)msg.len[0];
+ len |= (wxUint32)(msg.len[1] << 8);
+ len |= (wxUint32)(msg.len[2] << 16);
+ len |= (wxUint32)(msg.len[3] << 24);
+
+ wxUint32 len2;
+ if (len > nbytes)
+ {
+ len2 = len - nbytes;
+ len = nbytes;
+ }
+ else
+ len2 = 0;
+
+ // Don't attempt to read if the msg was zero bytes long.
+ m_lcount = len ? DoRead(buffer, len) : 0;
+
+ if ( len2 )
+ {
+ char discard_buffer[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 = DoRead(discard_buffer, (wxUint32)discard_len);
+ len2 -= (wxUint32)discard_len;
+ }
+ while ((discard_len > 0) && len2);
+ }
+
+ if ( !len2 && DoRead(&msg, sizeof(msg)) == sizeof(msg) )
+ {
+ 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 )
+ ok = true;
+ }
+ }
+ }
+
+ if ( !ok )
+ SetError(wxSOCKET_IOERR);
+
+ return *this;
+}
+
+wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes)
{
- char *curr_pos, *new_buf;
+ wxSocketReadGuard read(this);
+
+ // Peek() should never block
+ wxSocketWaitModeChanger changeFlags(this, wxSOCKET_NOWAIT);
- new_buf = (char *) malloc(m_unrd_size+size);
- curr_pos = new_buf + size;
+ m_lcount = DoRead(buffer, nbytes);
- memcpy(new_buf, buffer, size);
- memcpy(curr_pos, m_unread, m_unrd_size);
+ Pushback(buffer, m_lcount);
- free(m_unread);
- m_unread = new_buf;
- m_unrd_size += size;
+ return *this;
}
-size_t wxSocketBase::GetPushback(char *buffer, size_t size, bool peek)
+wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes)
{
- if (!m_unrd_size)
- return 0;
+ wxSocketWriteGuard write(this);
- if (size > m_unrd_size)
- size = m_unrd_size;
- memcpy(buffer, m_unread, size);
+ m_lcount = DoWrite(buffer, nbytes);
- if (!peek) {
- m_unrd_size -= size;
- if (!m_unrd_size) {
- free(m_unread);
- m_unread = NULL;
+ return *this;
+}
+
+// This function is a mirror image of DoRead() except that it doesn't use the
+// push back buffer and doesn't treat 0 return value specially (normally this
+// shouldn't happen at all here), so please see comments there for explanations
+wxUint32 wxSocketBase::DoWrite(const void *buffer_, wxUint32 nbytes)
+{
+ wxCHECK_MSG( m_impl, 0, "socket must be valid" );
+
+ const char *buffer = static_cast<const char *>(buffer_);
+ wxCHECK_MSG( buffer, 0, "NULL buffer" );
+
+ wxUint32 total = 0;
+ while ( nbytes )
+ {
+ if ( m_impl->m_stream && !m_connected )
+ {
+ if ( (m_flags & wxSOCKET_WAITALL) || !total )
+ SetError(wxSOCKET_IOERR);
+ break;
+ }
+
+ const int ret = m_impl->Write(buffer, nbytes);
+ if ( ret == -1 )
+ {
+ if ( m_impl->GetLastError() == wxSOCKET_WOULDBLOCK )
+ {
+ if ( m_flags & wxSOCKET_NOWAIT )
+ break;
+
+ if ( !DoWaitWithTimeout(wxSOCKET_OUTPUT_FLAG) )
+ {
+ SetError(wxSOCKET_TIMEDOUT);
+ break;
+ }
+
+ continue;
+ }
+ else // "real" error
+ {
+ SetError(wxSOCKET_IOERR);
+ break;
+ }
+ }
+
+ total += ret;
+
+ if ( !(m_flags & wxSOCKET_WAITALL) )
+ break;
+
+ nbytes -= ret;
+ buffer += ret;
+ }
+
+ return total;
+}
+
+wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes)
+{
+ struct
+ {
+ unsigned char sig[4];
+ unsigned char len[4];
+ } msg;
+
+ wxSocketWriteGuard write(this);
+
+ wxSocketWaitModeChanger changeFlags(this, wxSOCKET_WAITALL);
+
+ 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);
+
+ bool ok = false;
+ if ( DoWrite(&msg, sizeof(msg)) == sizeof(msg) )
+ {
+ m_lcount = DoWrite(buffer, nbytes);
+ if ( m_lcount == nbytes )
+ {
+ 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 ( DoWrite(&msg, sizeof(msg)) == sizeof(msg))
+ ok = true;
+ }
}
- }
- return size;
+ if ( !ok )
+ SetError(wxSOCKET_IOERR);
+
+ return *this;
}
-// --------------------------------------------------------------
-// --------- wxSocketBase "multi-thread" core -------------------
-// --------------------------------------------------------------
+wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes)
+{
+ if (nbytes != 0)
+ Pushback(buffer, nbytes);
+
+ SetError(wxSOCKET_NOERROR);
+ m_lcount = nbytes;
+
+ return *this;
+}
-bool wxSocketBase::DoRequests(wxRequestEvent req_flag)
+wxSocketBase& wxSocketBase::Discard()
{
- wxNode *node = req_list[req_flag].First();
- size_t len;
- int ret;
+ char *buffer = new char[MAX_DISCARD_SIZE];
+ wxUint32 ret;
+ wxUint32 total = 0;
+
+ wxSocketReadGuard read(this);
- if (!node)
- return FALSE;
+ wxSocketWaitModeChanger changeFlags(this, wxSOCKET_NOWAIT);
- SockRequest *req = (SockRequest *)node->Data();
+ do
+ {
+ ret = DoRead(buffer, MAX_DISCARD_SIZE);
+ total += ret;
+ }
+ while (ret == MAX_DISCARD_SIZE);
+
+ delete[] buffer;
+ m_lcount = total;
+ SetError(wxSOCKET_NOERROR);
- delete node;
+ return *this;
+}
- switch (req->type) {
- case EVT_READ:
- case EVT_PEEK:
- ret = recv(m_fd, req->buffer, req->size,
- (req->type == EVT_PEEK) ? MSG_PEEK : 0);
- if (ret < 0) {
- req->error = errno;
- req->done = TRUE;
- break;
+// --------------------------------------------------------------------------
+// Wait functions
+// --------------------------------------------------------------------------
+
+/*
+ This function will check for the events specified in the flags parameter,
+ and it will return a mask indicating which operations can be performed.
+ */
+wxSocketEventFlags wxSocketImpl::Select(wxSocketEventFlags flags,
+ const timeval *timeout)
+{
+ 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;
+
+ // prepare the FD sets, passing NULL for the one(s) we don't use
+ fd_set
+ readfds, *preadfds = NULL,
+ writefds, *pwritefds = NULL,
+ exceptfds; // always want to know about errors
+
+ if ( flags & wxSOCKET_INPUT_FLAG )
+ preadfds = &readfds;
+
+ if ( flags & wxSOCKET_OUTPUT_FLAG )
+ pwritefds = &writefds;
+
+ // When using non-blocking connect() the client socket becomes connected
+ // (successfully or not) when it becomes writable but when using
+ // non-blocking accept() the server socket becomes connected when it
+ // becomes readable.
+ if ( flags & wxSOCKET_CONNECTION_FLAG )
+ {
+ if ( m_server )
+ preadfds = &readfds;
+ else
+ pwritefds = &writefds;
}
- len = ret;
- if ((len < req->size) && (m_flags & WAITALL)) {
- req->size -= len;
- req->nbytes += len;
- req->buffer += len;
- req->auto_wakeup->Start(m_timeout*1000, TRUE);
- req_list[req_flag].Insert(req);
- break;
+
+ if ( preadfds )
+ {
+ wxFD_ZERO(preadfds);
+ wxFD_SET(m_fd, preadfds);
+ }
+
+ if ( pwritefds )
+ {
+ wxFD_ZERO(pwritefds);
+ wxFD_SET(m_fd, pwritefds);
}
- req->done = TRUE;
- req->nbytes += len;
-#ifndef __WXGTK__
- DestroyCallbacks();
-#endif
- break;
- case EVT_WRITE:
- ret = send(m_fd, req->buffer, req->size, 0);
- if (ret < 0) {
- req->error = errno;
- req->done = TRUE;
- break;
- }
- len = ret;
- if ((len < req->size) && (m_flags & WAITALL)) {
- req->size -= len;
- req->nbytes += len;
- req->buffer += len;
- req->auto_wakeup->Start(m_timeout*1000, TRUE);
- req_list[req_flag].Insert(req);
- break;
- }
- req->done = TRUE;
- req->nbytes += len;
-#ifndef __WXGTK__
- DestroyCallbacks();
-#endif
- break;
- default:
- return FALSE;
- }
- return TRUE;
-}
-
-void wxSocketBase::WantSpeedBuffer(char *buffer, size_t nbytes,
- wxRequestEvent evt)
-{
- int ret = 0;
-
- switch (evt) {
- case EVT_PEEK:
- case EVT_READ:
- ret = recv(m_fd, buffer, nbytes,
- (evt == EVT_PEEK) ? MSG_PEEK : 0);
- break;
- case EVT_WRITE:
- ret = send(m_fd, buffer, nbytes, 0);
- break;
- }
- if (ret < 0) {
- m_lcount = 0;
- m_error = errno;
- } else
- m_lcount = ret;
-}
-
-void wxSocketBase::WantBuffer(char *buffer, size_t nbytes,
- wxRequestEvent evt)
-{
- bool buf_timed_out;
-
- if (m_fd == INVALID_SOCKET || !m_handler || !m_connected)
- return;
-
- if (m_flags & SPEED) {
- WantSpeedBuffer(buffer, nbytes, evt);
- return;
- }
- SockRequest *buf = new SockRequest;
- wxSockWakeUp s_wake(NULL, (int *)&buf_timed_out, (int)TRUE);
+ wxFD_ZERO(&exceptfds);
+ wxFD_SET(m_fd, &exceptfds);
- m_wantbuf++;
- req_list[evt].Append(buf);
+ const int rc = select(m_fd + 1, preadfds, pwritefds, &exceptfds, &tv);
- SaveState();
- SetNotify(REQ_LOST | EventToNotify(evt));
- SetupCallbacks();
- buf->buffer = buffer;
- buf->size = nbytes;
- buf->done = FALSE;
- buf->type = evt;
- buf->nbytes = 0;
- buf->auto_wakeup = &s_wake;
- buf->error = 0;
- buf_timed_out = FALSE;
+ // check for errors first
+ if ( rc == -1 || wxFD_ISSET(m_fd, &exceptfds) )
+ {
+ m_establishing = false;
- s_wake.Start(m_timeout*1000, TRUE);
- if (m_flags & NOWAIT) {
- DoRequests(evt);
- } else {
- while (!buf->done && !buf_timed_out)
- PROCESS_EVENTS();
- }
- m_wantbuf--;
- m_lcount = buf->nbytes;
- if (buf_timed_out)
- m_error = ETIMEDOUT;
- else
- m_error = buf->error;
+ return wxSOCKET_LOST_FLAG & flags;
+ }
+
+ if ( rc == 0 )
+ return 0;
+
+ wxASSERT_MSG( rc == 1, "unexpected select() return value" );
+
+ wxSocketEventFlags detected = 0;
+ if ( preadfds && wxFD_ISSET(m_fd, preadfds) )
+ detected |= wxSOCKET_INPUT_FLAG;
+
+ if ( pwritefds && wxFD_ISSET(m_fd, pwritefds) )
+ {
+ // check for the case of non-blocking connect()
+ if ( m_establishing && !m_server )
+ {
+ int error;
+ SOCKOPTLEN_T len = sizeof(error);
+ m_establishing = false;
+ getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
+
+ if ( error )
+ detected = wxSOCKET_LOST_FLAG;
+ else
+ detected |= wxSOCKET_CONNECTION_FLAG;
+ }
+ else // not called to get non-blocking connect() status
+ {
+ detected |= wxSOCKET_OUTPUT_FLAG;
+ }
+ }
- delete buf;
- RestoreState();
+ return detected & flags;
}
-// --------------------------------------------------------------
-// wxSocketServer ///////////////////////////////////////////////
-// --------------------------------------------------------------
+int
+wxSocketBase::DoWait(long seconds, long milliseconds, wxSocketEventFlags flags)
+{
+ // Use either the provided timeout or the default timeout value associated
+ // with this socket.
+ //
+ // TODO: allow waiting forever, see #9443
+ const long timeout = seconds == -1 ? m_timeout * 1000
+ : seconds * 1000 + milliseconds;
+
+ return DoWait(timeout, flags);
+}
-// --------------------------------------------------------------
-// --------- wxSocketServer CONSTRUCTOR -------------------------
-// --------------------------------------------------------------
-wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
- wxSockFlags flags) :
- wxSocketBase(flags, SOCK_SERVER)
+int
+wxSocketBase::DoWait(long timeout, wxSocketEventFlags flags)
{
- m_fd = socket(addr_man.GetFamily(), SOCK_STREAM, 0);
+ wxCHECK_MSG( m_impl, -1, "can't wait on invalid socket" );
+
+ // we're never going to become ready in a TCP client if we're not connected
+ // any more (OTOH a server can call this to precisely wait for a connection
+ // so do wait for it in this case and UDP client is never "connected")
+ if ( !m_impl->IsServer() &&
+ m_impl->m_stream && !m_connected && !m_establishing )
+ return -1;
+
+ // This can be set to true from Interrupt() to exit this function a.s.a.p.
+ m_interrupt = false;
- if (m_fd == INVALID_SOCKET)
- return;
- int flag = 1;
- setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (char*)&flag, sizeof(int));
+ const wxMilliClock_t timeEnd = wxGetLocalTimeMillis() + timeout;
- struct sockaddr *myaddr;
- size_t len;
+ // Get the active event loop which we'll use for the message dispatching
+ // when running in the main thread unless this was explicitly disabled by
+ // setting wxSOCKET_BLOCK flag
+ wxEventLoopBase *eventLoop;
+ if ( !(m_flags & wxSOCKET_BLOCK) && wxIsMainThread() )
+ {
+ eventLoop = wxEventLoop::GetActive();
+ }
+ else // in worker thread
+ {
+ // We never dispatch messages from threads other than the main one.
+ eventLoop = NULL;
+ }
- addr_man.Build(myaddr, len);
- if (bind(m_fd, myaddr, addr_man.SockAddrLen()) < 0)
- return;
+ // Make sure the events we're interested in are enabled before waiting for
+ // them: this is really necessary here as otherwise this could happen:
+ // 1. DoRead(wxSOCKET_WAITALL) is called
+ // 2. There is nothing to read so DoWait(wxSOCKET_INPUT_FLAG) is called
+ // 3. Some, but not all data appears, wxSocketImplUnix::OnReadWaiting()
+ // is called and wxSOCKET_INPUT_FLAG events are disabled in it
+ // 4. Because of wxSOCKET_WAITALL we call DoWait() again but the events
+ // are still disabled and we block forever
+ //
+ // More elegant solution would be nice but for now simply re-enabling the
+ // events here will do
+ m_impl->ReenableEvents(flags & (wxSOCKET_INPUT_FLAG | wxSOCKET_OUTPUT_FLAG));
+
+
+ // 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)
+ int rc = 0;
+ for ( bool firstTime = true; !m_interrupt; firstTime = false )
+ {
+ long timeLeft = wxMilliClockToLong(timeEnd - wxGetLocalTimeMillis());
+ if ( timeLeft < 0 )
+ {
+ if ( !firstTime )
+ break; // timed out
+
+ timeLeft = 0;
+ }
+
+ wxSocketEventFlags events;
+ if ( eventLoop )
+ {
+ // 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);
+ }
+
+ // 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;
+ rc = -1;
+ break;
+ }
+
+ // otherwise mask out the bits we're not interested in
+ events &= flags;
+
+ // Incoming connection (server) or connection established (client)?
+ if ( events & wxSOCKET_CONNECTION_FLAG )
+ {
+ m_connected = true;
+ m_establishing = false;
+ rc = true;
+ break;
+ }
+
+ // Data available or output buffer ready?
+ if ( (events & wxSOCKET_INPUT_FLAG) || (events & wxSOCKET_OUTPUT_FLAG) )
+ {
+ rc = true;
+ break;
+ }
+ }
- if (listen(m_fd, 5) < 0) {
- m_fd = INVALID_SOCKET;
- return;
- }
+ return rc;
}
-// --------------------------------------------------------------
-// --------- wxSocketServer Accept ------------------------------
-// --------------------------------------------------------------
-bool wxSocketServer::AcceptWith(wxSocketBase& sock)
+bool wxSocketBase::Wait(long seconds, long milliseconds)
{
- int fd2;
-
- if ((fd2 = accept(m_fd, 0, 0)) < 0)
- return FALSE;
+ return DoWait(seconds, milliseconds,
+ wxSOCKET_INPUT_FLAG |
+ wxSOCKET_OUTPUT_FLAG |
+ wxSOCKET_CONNECTION_FLAG) != 0;
+}
- struct linger linger;
- linger.l_onoff = 0;
- linger.l_linger = 1;
+bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
+{
+ // Check pushback buffer before entering DoWait
+ if ( m_unread )
+ return true;
- setsockopt(fd2, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger));
+ // Check if the socket is not already ready for input, if it is, there is
+ // no need to start waiting for it (worse, we'll actually never get a
+ // notification about the socket becoming ready if it is already under
+ // Windows)
+ if ( m_impl->Select(wxSOCKET_INPUT_FLAG) )
+ return true;
- int flag = 0;
- setsockopt(fd2, SOL_SOCKET, SO_KEEPALIVE, (char*)&flag, sizeof(int));
+ return DoWait(seconds, milliseconds, wxSOCKET_INPUT_FLAG) != 0;
+}
- if (!(sock.m_flags & SPEED)) {
- unsigned long flag2 = 1;
- ioctl(fd2, FIONBIO, &flag2);
- }
- sock.m_type = SOCK_INTERNAL;
- sock.m_fd = fd2;
- sock.m_connected = TRUE;
+bool wxSocketBase::WaitForWrite(long seconds, long milliseconds)
+{
+ if ( m_impl->Select(wxSOCKET_OUTPUT_FLAG) )
+ return true;
- return TRUE;
+ return DoWait(seconds, milliseconds, wxSOCKET_OUTPUT_FLAG) != 0;
}
-wxSocketBase *wxSocketServer::Accept()
+bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
{
- wxSocketBase* sock = new wxSocketBase();
+ return DoWait(seconds, milliseconds, wxSOCKET_LOST_FLAG) == -1;
+}
- sock->SetFlags((wxSockFlags)m_flags);
+// --------------------------------------------------------------------------
+// Miscellaneous
+// --------------------------------------------------------------------------
- if (!AcceptWith(*sock))
- return NULL;
+//
+// Get local or peer address
+//
- if (m_handler)
- m_handler->Register(sock);
+bool wxSocketBase::GetPeer(wxSockAddress& addr) const
+{
+ wxCHECK_MSG( m_impl, false, "invalid socket" );
- return sock;
+ const wxSockAddressImpl& peer = m_impl->GetPeer();
+ if ( !peer.IsOk() )
+ return false;
+
+ addr.SetAddress(peer);
+
+ return true;
}
-// --------------------------------------------------------------
-// --------- wxSocketServer callbacks ---------------------------
-// --------------------------------------------------------------
-void wxSocketServer::OnRequest(wxRequestEvent evt)
+bool wxSocketBase::GetLocal(wxSockAddress& addr) const
{
- if (evt == EVT_ACCEPT) {
- OldOnNotify(EVT_ACCEPT);
- }
+ wxCHECK_MSG( m_impl, false, "invalid socket" );
+
+ const wxSockAddressImpl& local = m_impl->GetLocal();
+ if ( !local.IsOk() )
+ return false;
+
+ addr.SetAddress(local);
+
+ return true;
}
-// --------------------------------------------------------------
-// wxSocketClient ///////////////////////////////////////////////
-// --------------------------------------------------------------
+//
+// Save and restore socket state
+//
-// --------- wxSocketClient CONSTRUCTOR -------------------------
-// --------------------------------------------------------------
-wxSocketClient::wxSocketClient(wxSockFlags _flags) :
- wxSocketBase(_flags, SOCK_CLIENT)
+void wxSocketBase::SaveState()
{
+ 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);
}
-// --------------------------------------------------------------
-// --------- wxSocketClient DESTRUCTOR --------------------------
-// --------------------------------------------------------------
-wxSocketClient::~wxSocketClient()
+void wxSocketBase::RestoreState()
{
+ wxList::compatibility_iterator node;
+ wxSocketState *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;
}
-// --------------------------------------------------------------
-// --------- wxSocketClient Connect functions -------------------
-// --------------------------------------------------------------
-bool wxSocketClient::Connect(wxSockAddress& addr_man, bool WXUNUSED(wait) )
-{
- struct linger linger;
+//
+// Timeout and flags
+//
- if (IsConnected())
- Close();
+void wxSocketBase::SetTimeout(long seconds)
+{
+ m_timeout = seconds;
- m_fd = socket(addr_man.GetFamily(), SOCK_STREAM, 0);
+ if (m_impl)
+ m_impl->SetTimeout(m_timeout * 1000);
+}
- if (m_fd < 0)
- return FALSE;
+void wxSocketBase::SetFlags(wxSocketFlags flags)
+{
+ // Do some sanity checking on the flags used: not all values can be used
+ // together.
+ wxASSERT_MSG( !(flags & wxSOCKET_NOWAIT) ||
+ !(flags & (wxSOCKET_WAITALL | wxSOCKET_BLOCK)),
+ "Using wxSOCKET_WAITALL or wxSOCKET_BLOCK with "
+ "wxSOCKET_NOWAIT doesn't make sense" );
- m_connected = FALSE;
+ m_flags = flags;
+}
- linger.l_onoff = 1;
- linger.l_linger = 5;
- setsockopt(m_fd, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger));
- // Stay in touch with the state of things...
+// --------------------------------------------------------------------------
+// Event handling
+// --------------------------------------------------------------------------
- unsigned long flag = 1;
- setsockopt(m_fd, SOL_SOCKET, SO_KEEPALIVE, (char*)&flag, sizeof(int));
+void wxSocketBase::OnRequest(wxSocketNotify notification)
+{
+ wxSocketEventFlags flag = 0;
+ switch ( notification )
+ {
+ case wxSOCKET_INPUT:
+ flag = wxSOCKET_INPUT_FLAG;
+ break;
- // Disable the nagle algorithm, which delays sends till the
- // buffer is full (or a certain time period has passed?)...
+ case wxSOCKET_OUTPUT:
+ flag = wxSOCKET_OUTPUT_FLAG;
+ break;
-#if defined(__WINDOWS__) || (defined(IPPROTO_TCP) && defined(TCP_NODELAY))
- flag = 1;
- setsockopt(m_fd, IPPROTO_TCP, TCP_NODELAY, (char*)&flag, sizeof(int));
-#endif
+ case wxSOCKET_CONNECTION:
+ flag = wxSOCKET_CONNECTION_FLAG;
- struct sockaddr *remote;
- size_t len;
+ // we're now successfully connected
+ m_connected = true;
+ m_establishing = false;
- addr_man.Build(remote, len);
+ // error was previously set to wxSOCKET_WOULDBLOCK, but this is not
+ // the case any longer
+ SetError(wxSOCKET_NOERROR);
+ break;
- if (connect(m_fd, remote, len) != 0)
- return FALSE;
+ case wxSOCKET_LOST:
+ flag = wxSOCKET_LOST_FLAG;
- if (!(m_flags & SPEED)) {
- flag = 1;
- ioctl(m_fd, FIONBIO, &flag);
- }
+ // if we lost the connection the socket is now closed and not
+ // connected any more
+ m_connected = false;
+ m_closed = true;
+ break;
- Notify(TRUE);
+ default:
+ wxFAIL_MSG( "unknown wxSocket notification" );
+ }
- m_connected = TRUE;
- return 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 )
+ {
+ // don't generate the events when we're inside DoWait() called from our
+ // own code as we are going to consume the data that has just become
+ // available ourselves and the user code won't see it at all
+ if ( (notification == wxSOCKET_INPUT && m_reading) ||
+ (notification == wxSOCKET_OUTPUT && m_writing) )
+ {
+ return;
+ }
+
+ wxSocketEvent event(m_id);
+ event.m_event = notification;
+ event.m_clientData = m_clientData;
+ event.SetEventObject(this);
+
+ m_handler->AddPendingEvent(event);
+ }
}
-bool wxSocketClient::WaitOnConnect(long seconds)
+void wxSocketBase::Notify(bool notify)
{
- int ret = _Wait(seconds, 0, REQ_CONNECT | REQ_LOST);
-
- if (ret)
- m_connected = TRUE;
+ m_notify = notify;
+}
- return m_connected;
+void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+{
+ m_eventmask = flags;
}
-void wxSocketClient::OnRequest(wxRequestEvent evt)
+void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)
{
- if (evt == EVT_CONNECT) {
- if (m_connected) {
- SetNotify(m_neededreq & ~REQ_CONNECT);
- return;
- }
- m_waitflags = 0x40;
- m_connected = TRUE;
- OldOnNotify(EVT_CONNECT);
- DestroyCallbacks();
- return;
- }
- wxSocketBase::OnRequest(evt);
+ m_handler = &handler;
+ m_id = id;
}
-/////////////////////////////////////////////////////////////////
-// wxSocketHandler ///////////////////////////////////////////////
-/////////////////////////////////////////////////////////////////
+// --------------------------------------------------------------------------
+// Pushback buffer
+// --------------------------------------------------------------------------
-wxSocketHandler *wxSocketHandler::master = NULL;
-#if defined(__WINDOWS__)
-static int win_initialized = 0;
-#endif
+void wxSocketBase::Pushback(const void *buffer, wxUint32 size)
+{
+ if (!size) return;
+
+ if (m_unread == NULL)
+ m_unread = malloc(size);
+ else
+ {
+ void *tmp;
+
+ tmp = malloc(m_unrd_size + size);
+ memcpy((char *)tmp + size, m_unread, m_unrd_size);
+ free(m_unread);
-// --------------------------------------------------------------
-// --------- wxSocketHandler CONSTRUCTOR ------------------------
-// --------------------------------------------------------------
-#ifdef __WINDOWS__
+ m_unread = tmp;
+ }
+
+ m_unrd_size += size;
-extern char wxPanelClassName[];
+ memcpy(m_unread, buffer, size);
+}
-LRESULT APIENTRY _EXPORT wxSocketHandlerWndProc(HWND hWnd, UINT message,
- WPARAM wParam, LPARAM lParam)
+wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek)
{
- wxSocketHandler *h_sock = (wxSocketHandler *)GetWindowLong(hWnd, GWL_USERDATA);
- wxNode *node = h_sock->smsg_list->Find(message);
- wxSocketBase *sock;
- wxSocketBase::wxRequestEvent sk_req;
- UINT event = WSAGETSELECTEVENT(lParam);
+ wxCHECK_MSG( buffer, 0, "NULL buffer" );
- if (!node)
- return DefWindowProc(hWnd, message, wParam, lParam);
+ if (!m_unrd_size)
+ return 0;
- sock = (wxSocketBase *)node->Data();
+ if (size > (m_unrd_size-m_unrd_cur))
+ size = m_unrd_size-m_unrd_cur;
- switch (event) {
- case FD_READ:
- sk_req = wxSocketBase::EVT_READ;
- break;
- case FD_WRITE:
- sk_req = wxSocketBase::EVT_WRITE;
- break;
- case FD_CLOSE:
- sk_req = wxSocketBase::EVT_LOST;
- break;
- case FD_ACCEPT:
- sk_req = wxSocketBase::EVT_ACCEPT;
- break;
- case FD_CONNECT:
- sk_req = wxSocketBase::EVT_CONNECT;
- break;
- }
- sock->OnRequest(sk_req);
+ memcpy(buffer, (char *)m_unread + m_unrd_cur, size);
- return (LRESULT)0;
+ if (!peek)
+ {
+ m_unrd_cur += size;
+ if (m_unrd_size == m_unrd_cur)
+ {
+ free(m_unread);
+ m_unread = NULL;
+ m_unrd_size = 0;
+ m_unrd_cur = 0;
+ }
+ }
+
+ return size;
}
-FARPROC wxSocketSubClassProc = NULL;
-#endif
+// ==========================================================================
+// wxSocketServer
+// ==========================================================================
-wxSocketHandler::wxSocketHandler()
+// --------------------------------------------------------------------------
+// Ctor
+// --------------------------------------------------------------------------
+
+wxSocketServer::wxSocketServer(const wxSockAddress& addr,
+ wxSocketFlags flags)
+ : wxSocketBase(flags, wxSOCKET_SERVER)
{
-#if defined(__WINDOWS__)
- if (!win_initialized) {
- WSADATA wsaData;
+ wxLogTrace( wxTRACE_Socket, wxT("Opening wxSocketServer") );
- WSAStartup((1 << 8) | 1, &wsaData);
- win_initialized = 1;
- }
- internal = new wxSockHandlerInternal;
- internal->sockWin = ::CreateWindow(wxPanelClassName, NULL, 0,
- 0, 0, 0, 0, NULL, (HMENU) NULL,
- wxhInstance, 0);
+ wxSocketManager * const manager = wxSocketManager::Get();
+ m_impl = manager ? manager->CreateSocket(*this) : NULL;
- // Subclass the window
- if (!wxSocketSubClassProc)
- wxSocketSubClassProc = MakeProcInstance((FARPROC) wxSocketHandlerWndProc, wxhInstance);
- ::SetWindowLong(internal->sockWin, GWL_WNDPROC, (LONG) wxSocketSubClassProc);
- ::SetWindowLong(internal->sockWin, GWL_USERDATA, (LONG) this);
+ if (!m_impl)
+ {
+ wxLogTrace( wxTRACE_Socket, wxT("*** Failed to create m_impl") );
+ return;
+ }
- internal->firstAvailableMsg = 5000;
- smsg_list = new wxList(wxKEY_INTEGER);
-#endif
+ // Setup the socket as server
+ m_impl->SetLocal(addr.GetAddress());
- socks = new wxList;
+ if (GetFlags() & wxSOCKET_REUSEADDR) {
+ m_impl->SetReusable();
+ }
+ if (GetFlags() & wxSOCKET_BROADCAST) {
+ m_impl->SetBroadcast();
+ }
+ if (GetFlags() & wxSOCKET_NOBIND) {
+ m_impl->DontDoBind();
+ }
-#ifndef __WINDOWS__
- signal(SIGPIPE, SIG_IGN);
-#endif
+ if (m_impl->CreateServer() != wxSOCKET_NOERROR)
+ {
+ wxDELETE(m_impl);
+
+ wxLogTrace( wxTRACE_Socket, wxT("*** CreateServer() failed") );
+ return;
+ }
+
+ wxLogTrace( wxTRACE_Socket, wxT("wxSocketServer on fd %d"), m_impl->m_fd );
}
-// --------------------------------------------------------------
-// --------- wxSocketHandler DESTRUCTOR -------------------------
-// --------------------------------------------------------------
-wxSocketHandler::~wxSocketHandler()
+// --------------------------------------------------------------------------
+// Accept
+// --------------------------------------------------------------------------
+
+bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
{
- wxNode *next_node, *node = socks->First();
+ if ( !m_impl || (m_impl->m_fd == INVALID_SOCKET) || !m_impl->IsServer() )
+ {
+ wxFAIL_MSG( "can only be called for a valid server socket" );
- while (node) {
- wxSocketBase* sock = (wxSocketBase*)node->Data();
+ SetError(wxSOCKET_INVSOCK);
- delete sock;
- next_node = node->Next();
- delete node;
- node = next_node;
- }
+ return false;
+ }
- delete socks;
+ if ( wait )
+ {
+ // wait until we get a connection
+ if ( !m_impl->SelectWithTimeout(wxSOCKET_INPUT_FLAG) )
+ {
+ SetError(wxSOCKET_TIMEDOUT);
-#ifdef __WINDOWS__
- delete smsg_list;
+ return false;
+ }
+ }
- ::DestroyWindow(internal->sockWin);
- WSACleanup();
- win_initialized = 0;
+ sock.m_impl = m_impl->Accept(sock);
- delete internal;
-#endif
+ if ( !sock.m_impl )
+ {
+ SetError(m_impl->GetLastError());
+
+ return false;
+ }
+
+ sock.m_type = wxSOCKET_BASE;
+ sock.m_connected = true;
+
+ return true;
}
-// --------------------------------------------------------------
-// --------- wxSocketHandler registering functions --------------
-// --------------------------------------------------------------
-void wxSocketHandler::Register(wxSocketBase* sock)
+wxSocketBase *wxSocketServer::Accept(bool wait)
{
- wxNode *node;
+ wxSocketBase* sock = new wxSocketBase();
+
+ sock->SetFlags(m_flags);
- for (node = socks->First(); node != NULL; node = node->Next()) {
- wxSocketBase* s = (wxSocketBase*)node->Data();
+ if (!AcceptWith(*sock, wait))
+ {
+ sock->Destroy();
+ sock = NULL;
+ }
- if (s == sock)
- return;
- }
+ return sock;
+}
- if (sock) {
- socks->Append(sock);
- sock->SetHandler(this);
- sock->SetupCallbacks();
- }
+bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
+{
+ return DoWait(seconds, milliseconds, wxSOCKET_CONNECTION_FLAG) == 1;
}
-void wxSocketHandler::UnRegister(wxSocketBase* sock)
+bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen)
{
- wxNode *node;
+ wxASSERT_MSG( m_impl, wxT("Socket not initialised") );
- for (node = socks->First(); node; node = node->Next()) {
- wxSocketBase* s = (wxSocketBase*)node->Data();
+ SOCKOPTLEN_T lenreal = *optlen;
+ if ( getsockopt(m_impl->m_fd, level, optname,
+ static_cast<char *>(optval), &lenreal) != 0 )
+ return false;
- if (s == sock) {
- delete node;
- sock->DestroyCallbacks();
- sock->SetHandler(NULL);
- return;
- }
- }
+ *optlen = lenreal;
+
+ return true;
}
-unsigned long wxSocketHandler::Count() const
+bool
+wxSocketBase::SetOption(int level, int optname, const void *optval, int optlen)
{
- return socks->Number();
+ wxASSERT_MSG( m_impl, wxT("Socket not initialised") );
+
+ return setsockopt(m_impl->m_fd, level, optname,
+ static_cast<const char *>(optval), optlen) == 0;
}
-// --------------------------------------------------------------
-// --------- wxSocketHandler "big" wait functions ---------------
-// --------------------------------------------------------------
-void handler_cbk(wxSocketBase& sock,
- wxSocketBase::wxRequestEvent WXUNUSED(flags),
- char *cdata)
+bool wxSocketBase::SetLocal(const wxIPV4address& local)
{
- int *a_wait = (int *)cdata;
+ m_localAddress = local;
- (*a_wait)++;
- sock.Notify(FALSE);
+ return true;
}
-int wxSocketHandler::Wait(long seconds, long microseconds)
+// ==========================================================================
+// wxSocketClient
+// ==========================================================================
+
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------
+
+wxSocketClient::wxSocketClient(wxSocketFlags flags)
+ : wxSocketBase(flags, wxSOCKET_CLIENT)
{
- int i;
- int on_wait;
- wxSockWakeUp s_wake(NULL, &on_wait, -2);
- wxNode *node;
+ m_initialRecvBufferSize =
+ m_initialSendBufferSize = -1;
+}
- for (node = socks->First(), i=0; node; node = node->Next(), i++) {
- wxSocketBase *sock = (wxSocketBase *)node->Data();
+// --------------------------------------------------------------------------
+// Connect
+// --------------------------------------------------------------------------
- sock->SaveState();
+bool wxSocketClient::DoConnect(const wxSockAddress& remote,
+ const wxSockAddress* local,
+ bool wait)
+{
+ if ( m_impl )
+ {
+ // Shutdown and destroy the old socket
+ Close();
+ delete m_impl;
+ }
- sock->SetupCallbacks();
+ m_connected = false;
+ m_establishing = false;
- sock->Callback(handler_cbk);
- sock->CallbackData((char *)&on_wait);
- }
- on_wait = 0;
- if (seconds != -1)
- s_wake.Start((seconds*1000) + (microseconds/1000), TRUE);
+ // Create and set up the new one
+ wxSocketManager * const manager = wxSocketManager::Get();
+ m_impl = manager ? manager->CreateSocket(*this) : NULL;
+ if ( !m_impl )
+ return false;
- while (!on_wait)
- PROCESS_EVENTS();
+ // Reuse makes sense for clients too, if we are trying to rebind to the same port
+ if (GetFlags() & wxSOCKET_REUSEADDR)
+ m_impl->SetReusable();
+ if (GetFlags() & wxSOCKET_BROADCAST)
+ m_impl->SetBroadcast();
+ if (GetFlags() & wxSOCKET_NOBIND)
+ m_impl->DontDoBind();
- for (node = socks->First(), i=0; node; node = node->Next(), i++) {
- wxSocketBase *sock = (wxSocketBase *)node->Data();
+ // Bind to the local IP address and port, when provided or if one had been
+ // set before
+ if ( !local && m_localAddress.GetAddress().IsOk() )
+ local = &m_localAddress;
- sock->RestoreState();
- }
+ if ( local )
+ m_impl->SetLocal(local->GetAddress());
- if (on_wait == -2)
- return 0;
+ m_impl->SetInitialSocketBuffers(m_initialRecvBufferSize, m_initialSendBufferSize);
- return on_wait;
-}
+ m_impl->SetPeer(remote.GetAddress());
-void wxSocketHandler::YieldSock()
-{
- wxNode *node;
+ // Finally do create the socket and connect to the peer
+ const wxSocketError err = m_impl->CreateClient(wait);
- for (node = socks->First(); node; node = node->Next() ) {
- wxSocketBase *sock = (wxSocketBase *)node->Data();
+ if ( err != wxSOCKET_NOERROR )
+ {
+ if ( err == wxSOCKET_WOULDBLOCK )
+ {
+ wxASSERT_MSG( !wait, "shouldn't get this for blocking connect" );
- sock->SaveState();
+ m_establishing = true;
+ }
- sock->SetFlags(wxSocketBase::SPEED);
- if (sock->IsData())
- sock->DoRequests(wxSocketBase::EVT_READ);
- sock->DoRequests(wxSocketBase::EVT_WRITE);
+ return false;
+ }
- sock->RestoreState();
- }
+ m_connected = true;
+ return true;
}
-// --------------------------------------------------------------
-// --------- wxSocketHandler: create and register the socket ----
-// --------------------------------------------------------------
-wxSocketServer *wxSocketHandler::CreateServer(wxSockAddress& addr,
- wxSocketBase::wxSockFlags flags)
+bool wxSocketClient::Connect(const wxSockAddress& remote, bool wait)
{
- wxSocketServer *serv = new wxSocketServer(addr, flags);
+ return DoConnect(remote, NULL, wait);
+}
- Register(serv);
- return serv;
+bool wxSocketClient::Connect(const wxSockAddress& remote,
+ const wxSockAddress& local,
+ bool wait)
+{
+ return DoConnect(remote, &local, wait);
}
-wxSocketClient *wxSocketHandler::CreateClient(wxSocketBase::wxSockFlags flags)
+bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
{
- wxSocketClient *client = new wxSocketClient(flags);
+ if ( m_connected )
+ {
+ // this happens if the initial attempt to connect succeeded without
+ // blocking
+ return true;
+ }
+
+ wxCHECK_MSG( m_establishing && m_impl, false,
+ "No connection establishment attempt in progress" );
- Register(client);
- return client;
+ // notice that we return true even if DoWait() returned -1, i.e. if an
+ // error occurred and connection was lost: this is intentional as we should
+ // return false only if timeout expired without anything happening
+ return DoWait(seconds, milliseconds, wxSOCKET_CONNECTION_FLAG) != 0;
}
-#ifdef __WINDOWS__
-// --------------------------------------------------------------
-// --------- wxSocketHandler: Windows specific methods ----------
-// --------------------------------------------------------------
-UINT wxSocketHandler::NewMessage(wxSocketBase *sock)
+// ==========================================================================
+// wxDatagramSocket
+// ==========================================================================
+
+wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr,
+ wxSocketFlags flags )
+ : wxSocketBase( flags, wxSOCKET_DATAGRAM )
{
- internal->firstAvailableMsg++;
- smsg_list->Append(internal->firstAvailableMsg, sock);
- return internal->firstAvailableMsg;
+ // Create the socket
+ wxSocketManager * const manager = wxSocketManager::Get();
+ m_impl = manager ? manager->CreateSocket(*this) : NULL;
+
+ if (!m_impl)
+ return;
+
+ // Setup the socket as non connection oriented
+ m_impl->SetLocal(addr.GetAddress());
+ if (flags & wxSOCKET_REUSEADDR)
+ {
+ m_impl->SetReusable();
+ }
+ if (GetFlags() & wxSOCKET_BROADCAST)
+ {
+ m_impl->SetBroadcast();
+ }
+ if (GetFlags() & wxSOCKET_NOBIND)
+ {
+ m_impl->DontDoBind();
+ }
+
+ if ( m_impl->CreateUDP() != wxSOCKET_NOERROR )
+ {
+ wxDELETE(m_impl);
+ return;
+ }
+
+ // Initialize all stuff
+ m_connected = false;
+ m_establishing = false;
}
-void wxSocketHandler::DestroyMessage(UINT msg)
+wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
+ void* buf,
+ wxUint32 nBytes )
{
- wxNode *node = smsg_list->Find(msg);
- delete node;
+ Read(buf, nBytes);
+ GetPeer(addr);
+ return (*this);
}
-HWND wxSocketHandler::GetHWND() const
+wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr,
+ const void* buf,
+ wxUint32 nBytes )
{
- return internal->sockWin;
+ wxASSERT_MSG( m_impl, wxT("Socket not initialised") );
+
+ m_impl->SetPeer(addr.GetAddress());
+ Write(buf, nBytes);
+ return (*this);
}
+// ==========================================================================
+// wxSocketModule
+// ==========================================================================
+
+class wxSocketModule : public wxModule
+{
+public:
+ virtual bool OnInit()
+ {
+ // wxSocketBase will call Initialize() itself only if sockets are
+ // really used, don't do it from here
+ return true;
+ }
+
+ virtual void OnExit()
+ {
+ if ( wxSocketBase::IsInitialized() )
+ wxSocketBase::Shutdown();
+ }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxSocketModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
+
+#if defined(wxUSE_SELECT_DISPATCHER) && wxUSE_SELECT_DISPATCHER
+// NOTE: we need to force linking against socketiohandler.cpp otherwise in
+// static builds of wxWidgets the ManagerSetter::ManagerSetter ctor
+// contained there wouldn't be ever called
+wxFORCE_LINK_MODULE( socketiohandler )
#endif
+// same for ManagerSetter in the MSW file
+#ifdef __WXMSW__
+ wxFORCE_LINK_MODULE( mswsocket )
#endif
- // __WXSTUBS__
+
+// and for OSXManagerSetter in the OS X one
+#ifdef __WXOSX__
+ wxFORCE_LINK_MODULE( osxsocket )
+#endif
+
+#endif // wxUSE_SOCKETS
projects / wxWidgets.git / blobdiff