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
// --------------------------------------------------------------------------
DECLARE_NO_COPY_CLASS(wxSocketState)
};
-// Conditionally make the socket non-blocking for the lifetime of this object.
-class wxSocketUnblocker
-{
-public:
- wxSocketUnblocker(wxSocketImpl *socket, bool unblock = true)
- : m_impl(socket),
- m_unblock(unblock)
- {
- if ( m_unblock )
- m_impl->SetNonBlocking(true);
- }
-
- ~wxSocketUnblocker()
- {
- if ( m_unblock )
- m_impl->SetNonBlocking(false);
- }
-
-private:
- wxSocketImpl * const m_impl;
- bool m_unblock;
-
- DECLARE_NO_COPY_CLASS(wxSocketUnblocker)
-};
-
// ============================================================================
// wxSocketManager
// ============================================================================
m_error = wxSOCKET_NOERROR;
m_server = false;
m_stream = true;
- m_non_blocking = false;
SetTimeout(wxsocket.GetTimeout() * 1000);
if ( m_initialSendBufferSize >= 0 )
SetSocketOption(SO_SNDBUF, m_initialSendBufferSize);
- // FIXME: shouldn't we check for m_non_blocking here? as it is now, all our
- // sockets are non-blocking
+ // 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;
+ WX_SOCKLEN_T lenAddr = sizeof(*m_local->m_addr);
if ( getsockname(m_fd, m_local->m_addr, &lenAddr) != 0 )
{
Close();
return UpdateLocalAddress();
}
-wxSocketError wxSocketImpl::CreateClient()
+wxSocketError wxSocketImpl::CreateClient(bool wait)
{
if ( !PreCreateCheck(m_peer) )
return m_error;
if ( m_fd == INVALID_SOCKET )
{
- m_error = wxSOCKET_IOERR;
- return wxSOCKET_IOERR;
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
}
PostCreation();
}
}
- // Connect to the peer and handle the EWOULDBLOCK return value in
- // platform-specific code
- return DoHandleConnect(connect(m_fd, m_peer->m_addr, m_peer->m_len));
+ // 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;
+ }
+
+ return m_error;
}
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()
{
*/
void wxSocketImpl::SetTimeout(unsigned long millis)
{
- m_timeout.tv_sec = (millis / 1000);
- m_timeout.tv_usec = (millis % 1000) * 1000;
+ SetTimeValFromMS(m_timeout, millis);
}
void wxSocketImpl::NotifyOnStateChange(wxSocketNotify event)
return NULL;
}
-bool wxSocketImpl::DoBlockWithTimeout(wxSocketEventFlags flags)
-{
- if ( !m_non_blocking )
- {
- fd_set fds;
- wxFD_ZERO(&fds);
- wxFD_SET(m_fd, &fds);
-
- fd_set
- *readfds = flags & wxSOCKET_INPUT_FLAG ? &fds : NULL,
- *writefds = flags & wxSOCKET_OUTPUT_FLAG ? &fds : NULL;
-
- // make a copy as it can be modified by select()
- struct timeval tv = m_timeout;
- int ret = select(m_fd + 1, readfds, writefds, NULL, &tv);
-
- switch ( ret )
- {
- case 0:
- m_error = wxSOCKET_TIMEDOUT;
- return false;
-
- case -1:
- m_error = wxSOCKET_IOERR;
- return false;
- }
- }
- //else: we're non-blocking, never block
-
- return true;
-}
-
// ==========================================================================
// wxSocketBase
// ==========================================================================
m_handler = NULL;
m_clientData = NULL;
m_notify = false;
- m_eventmask = 0;
+ m_eventmask =
+ m_eventsgot = 0;
if ( !IsInitialized() )
{
// Shutdown and close the socket
Close();
- // Supress events from now on
+ // Suppress events from now on
Notify(false);
// schedule this object for deletion
// 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
// polling the socket and don't block at all.
if ( m_flags & wxSOCKET_NOWAIT )
{
- wxSocketUnblocker unblock(m_impl);
int ret = m_impl->Read(buffer, nbytes);
if ( ret < 0 )
return 0;
{
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_impl->Read(buffer, nbytes);
wxUint32 total = 0;
if ( m_flags & wxSOCKET_NOWAIT )
{
- wxSocketUnblocker unblock(m_impl);
const int ret = m_impl->Write(buffer, nbytes);
if ( ret > 0 )
total += ret;
{
for ( ;; )
{
- if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
+ if ( !WaitForWrite() )
break;
const int ret = m_impl->Write(buffer, nbytes);
// --------------------------------------------------------------------------
/*
- * 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.
*/
-wxSocketEventFlags wxSocketImpl::Select(wxSocketEventFlags flags)
+wxSocketEventFlags wxSocketImpl::Select(wxSocketEventFlags flags,
+ const timeval *timeout)
{
- assert(this);
-
wxSocketEventFlags result = 0;
- fd_set readfds;
- fd_set writefds;
- fd_set exceptfds;
- struct timeval tv;
if (m_fd == INVALID_SOCKET)
return (wxSOCKET_LOST_FLAG & flags);
- /* Do not use a static struct, Linux can garble it */
- tv.tv_sec = 0;
- tv.tv_usec = 0;
+ struct timeval tv;
+ if ( timeout )
+ tv = *timeout;
+ else
+ tv.tv_sec = tv.tv_usec = 0;
+ fd_set readfds;
+ fd_set writefds;
+ fd_set exceptfds;
wxFD_ZERO(&readfds);
wxFD_ZERO(&writefds);
wxFD_ZERO(&exceptfds);
return (result | m_detected) & flags;
}
-// All Wait functions poll the socket using 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)
{
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();
}
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 wxSOCKET_LOST_FLAG is not
- // specified in flags to wait for.
- const wxSocketEventFlags
- result = m_impl->Select(flags | wxSOCKET_LOST_FLAG);
-
- // Incoming connection (server) or connection established (client)?
- if ( result & wxSOCKET_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 & wxSOCKET_INPUT_FLAG) || (result & wxSOCKET_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 & wxSOCKET_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;
break;
}
- if ( m_interrupt )
- break;
-
- // Wait more?
- const wxMilliClock_t timeNow = wxGetLocalTimeMillis();
- if ( timeNow >= timeEnd )
- break;
+ // otherwise mask out the bits we're not interested in
+ events &= flags;
- 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;
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_impl->Select(wxSOCKET_INPUT_FLAG))
- return;
+ flag = wxSOCKET_INPUT_FLAG;
break;
case wxSOCKET_OUTPUT:
- if (m_writing || !m_impl->Select(wxSOCKET_OUTPUT_FLAG))
- return;
+ flag = wxSOCKET_OUTPUT_FLAG;
+ break;
+
+ case wxSOCKET_CONNECTION:
+ flag = wxSOCKET_CONNECTION_FLAG;
break;
case wxSOCKET_LOST:
- m_connected = false;
- m_establishing = false;
+ flag = wxSOCKET_LOST_FLAG;
break;
- case wxSOCKET_MAX_EVENT:
- wxFAIL_MSG( "unexpected notification" );
- return;
+ default:
+ wxFAIL_MSG( "unknown wxSocket notification" );
}
- // Schedule the event
+ // if we lost the connection the socket is now closed
+ if ( notification == wxSOCKET_LOST )
+ m_closed = true;
- wxSocketEventFlags flag = 0;
- wxUnusedVar(flag);
- switch (notification)
- {
- case wxSOCKET_INPUT: flag = wxSOCKET_INPUT_FLAG; break;
- case wxSOCKET_OUTPUT: flag = wxSOCKET_OUTPUT_FLAG; break;
- case wxSOCKET_CONNECTION: flag = wxSOCKET_CONNECTION_FLAG; break;
- case wxSOCKET_LOST: flag = wxSOCKET_LOST_FLAG; break;
- default:
- wxLogWarning(_("wxSocket: unknown event!."));
- return;
- }
+ // remember the events which were generated for this socket, we're going to
+ // use this in DoWait()
+ m_eventsgot |= flag;
- if (((m_eventmask & flag) == flag) && m_notify)
+ // 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_impl)
- m_impl->Notify(notify);
}
void wxSocketBase::SetNotify(wxSocketEventFlags flags)
}
// Setup the socket as server
- m_impl->Notify(m_notify);
m_impl->SetLocal(addr_man.GetAddress());
if (GetFlags() & wxSOCKET_REUSEADDR) {
bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
{
- if (!m_impl)
+ 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 )
+ {
+ // wait until we get a connection
+ if ( !m_impl->SelectWithTimeout(wxSOCKET_INPUT_FLAG) )
+ {
+ m_error = wxSOCKET_TIMEDOUT;
+
+ 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_impl, !wait);
- sock.m_impl = m_impl->WaitConnection(sock);
+ sock.m_impl = m_impl->Accept(sock);
if ( !sock.m_impl )
+ {
+ m_error = m_impl->GetLastError();
+
return false;
+ }
sock.m_type = wxSOCKET_BASE;
sock.m_connected = true;
{
wxASSERT_MSG( m_impl, _T("Socket not initialised") );
- SOCKOPTLEN_T lenreal;
+ SOCKOPTLEN_T lenreal = *optlen;
if ( getsockopt(m_impl->m_fd, level, optname,
static_cast<char *>(optval), &lenreal) != 0 )
return false;
// Connect
// --------------------------------------------------------------------------
-bool wxSocketClient::DoConnect(const wxSockAddress& addr_man,
+bool wxSocketClient::DoConnect(const wxSockAddress& remote,
const wxSockAddress* local,
bool wait)
{
- if (m_impl)
+ if ( m_impl )
{
- // Shutdown and destroy the socket
+ // Shutdown and destroy the old socket
Close();
delete m_impl;
}
- m_impl = wxSocketImpl::Create(*this);
m_connected = false;
m_establishing = false;
- if (!m_impl)
+ // 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_impl, !wait);
-
// 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();
- }
- // 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 (la && la->m_addr)
- m_impl->SetLocal(la);
- }
+ if ( local )
+ m_impl->SetLocal(local->GetAddress());
m_impl->SetInitialSocketBuffers(m_initialRecvBufferSize, m_initialSendBufferSize);
- m_impl->SetPeer(addr_man.GetAddress());
- const wxSocketError err = m_impl->CreateClient();
+ m_impl->SetPeer(remote.GetAddress());
- //this will register for callbacks - must be called after m_impl->m_fd was initialized
- m_impl->Notify(m_notify);
+ // Finally do create the socket and connect to the peer
+ const wxSocketError err = m_impl->CreateClient(wait);
- if (err != wxSOCKET_NOERROR)
+ if ( err != wxSOCKET_NOERROR )
{
- if (err == wxSOCKET_WOULDBLOCK)
+ if ( err == wxSOCKET_WOULDBLOCK )
+ {
+ wxASSERT_MSG( !wait, "shouldn't get this for blocking connect" );
+
m_establishing = true;
+ }
return false;
}
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)
if (!m_impl)
return;
- m_impl->Notify(m_notify);
// Setup the socket as non connection oriented
m_impl->SetLocal(addr.GetAddress());
if (flags & wxSOCKET_REUSEADDR)
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