#include "wx/stopwatch.h"
#include "wx/thread.h"
#include "wx/evtloop.h"
+#include "wx/link.h"
#include "wx/private/fd.h"
#include "wx/private/socket.h"
// 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)
- #if defined(__UNIX__) && !defined(SO_NOSIGPIPE)
+ #if defined(__UNIX__) && !defined(SO_NOSIGPIPE) && !defined( __VMS )
#error "Writing to socket could generate unhandled SIGPIPE."
#error "Please post information about your system to wx-dev."
#endif
// macros and constants
// --------------------------------------------------------------------------
+// event
+wxDEFINE_EVENT(wxEVT_SOCKET, wxSocketEvent);
+
// discard buffer
#define MAX_DISCARD_SIZE (10 * 1024)
~wxSocketReadGuard()
{
m_socket->m_reading = false;
+
+ m_socket->m_impl->ReenableEvents(wxSOCKET_INPUT_FLAG);
}
private:
wxASSERT_MSG( !m_socket->m_writing, "write reentrancy?" );
m_socket->m_writing = true;
+
+ m_socket->m_impl->ReenableEvents(wxSOCKET_OUTPUT_FLAG);
}
~wxSocketWriteGuard()
WX_SOCKLEN_T fromlen = sizeof(from);
const SOCKET fd = accept(m_fd, &from.addr, &fromlen);
+ // accepting is similar to reading in the sense that it resets "ready for
+ // read" flag on the socket
+ ReenableEvents(wxSOCKET_INPUT_FLAG);
+
if ( fd == INVALID_SOCKET )
return NULL;
}
}
-/*
- * Disallow further read/write operations on this socket, close
- * the fd and disable all callbacks.
- */
void wxSocketImpl::Shutdown()
{
if ( m_fd != INVALID_SOCKET )
{
// this Initialize() will be undone by wxSocketModule::OnExit(), all
// the other calls to it should be matched by a call to Shutdown()
- Initialize();
+ if (!Initialize())
+ wxLogError("Cannot initialize wxSocketBase");
}
}
// otherwise wait until the socket becomes ready for reading or
// an error occurs on it
- if ( !DoWaitWithTimeout(wxSOCKET_INPUT_FLAG |
- wxSOCKET_LOST_FLAG) )
+ if ( !DoWaitWithTimeout(wxSOCKET_INPUT_FLAG) )
{
// and exit if the timeout elapsed before it did
SetError(wxSOCKET_TIMEDOUT);
if ( m_flags & wxSOCKET_NOWAIT )
break;
- if ( !DoWaitWithTimeout(wxSOCKET_OUTPUT_FLAG |
- wxSOCKET_LOST_FLAG) )
+ if ( !DoWaitWithTimeout(wxSOCKET_OUTPUT_FLAG) )
{
SetError(wxSOCKET_TIMEDOUT);
break;
return detected & flags;
}
-bool
+int
wxSocketBase::DoWait(long seconds, long milliseconds, wxSocketEventFlags flags)
{
// Use either the provided timeout or the default timeout value associated
return DoWait(timeout, flags);
}
-bool
+int
wxSocketBase::DoWait(long timeout, wxSocketEventFlags flags)
{
- wxCHECK_MSG( m_impl, false, "can't wait on invalid socket" );
+ wxCHECK_MSG( m_impl, -1, "can't wait on invalid socket" );
// we're never going to become ready if we're not connected (any more)
if ( !m_connected && !m_establishing )
- return (flags & wxSOCKET_LOST_FLAG) != 0;
+ return -1;
// This can be set to true from Interrupt() to exit this function a.s.a.p.
m_interrupt = false;
// 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 ( bool firstTime = true; !m_interrupt ; firstTime = false )
+ int rc = 0;
+ for ( bool firstTime = true; !m_interrupt; firstTime = false )
{
long timeLeft = wxMilliClockToLong(timeEnd - wxGetLocalTimeMillis());
if ( timeLeft < 0 )
{
m_connected = false;
m_establishing = false;
- if ( flags & wxSOCKET_LOST_FLAG )
- gotEvent = true;
+ rc = -1;
break;
}
{
m_connected = true;
m_establishing = false;
- gotEvent = true;
+ rc = true;
break;
}
// Data available or output buffer ready?
if ( (events & wxSOCKET_INPUT_FLAG) || (events & wxSOCKET_OUTPUT_FLAG) )
{
- gotEvent = true;
+ rc = true;
break;
}
}
- return gotEvent;
+ return rc;
}
bool wxSocketBase::Wait(long seconds, long milliseconds)
{
return DoWait(seconds, milliseconds,
- wxSOCKET_INPUT_FLAG |
- wxSOCKET_OUTPUT_FLAG |
- wxSOCKET_CONNECTION_FLAG |
- wxSOCKET_LOST_FLAG
- );
+ wxSOCKET_INPUT_FLAG |
+ wxSOCKET_OUTPUT_FLAG |
+ wxSOCKET_CONNECTION_FLAG) != 0;
}
bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
if ( m_impl->Select(wxSOCKET_INPUT_FLAG) )
return true;
- // Note that wxSOCKET_LOST_FLAG has to be explicitly passed to DoWait
- // because of the semantics of WaitForRead: a return value of true means
- // that a Read call will return immediately, not that there is
- // actually data to read.
- return DoWait(seconds, milliseconds, wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
+ return DoWait(seconds, milliseconds, wxSOCKET_INPUT_FLAG) != 0;
}
if ( m_impl->Select(wxSOCKET_OUTPUT_FLAG) )
return true;
- return DoWait(seconds, milliseconds, wxSOCKET_OUTPUT_FLAG | wxSOCKET_LOST_FLAG);
+ return DoWait(seconds, milliseconds, wxSOCKET_OUTPUT_FLAG) != 0;
}
bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
{
- return DoWait(seconds, milliseconds, wxSOCKET_LOST_FLAG);
+ return DoWait(seconds, milliseconds, wxSOCKET_LOST_FLAG) == -1;
}
// --------------------------------------------------------------------------
// send the wx event if enabled and we're interested in it
if ( m_notify && (m_eventmask & flag) && 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 )
+ // 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) )
{
- 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;
+ return;
}
wxSocketEvent event(m_id);
bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
{
- return DoWait(seconds, milliseconds, wxSOCKET_CONNECTION_FLAG);
+ return DoWait(seconds, milliseconds, wxSOCKET_CONNECTION_FLAG) == 1;
}
bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen)
m_initialSendBufferSize = -1;
}
-wxSocketClient::~wxSocketClient()
-{
-}
-
// --------------------------------------------------------------------------
// Connect
// --------------------------------------------------------------------------
wxCHECK_MSG( m_establishing && m_impl, false,
"No connection establishment attempt in progress" );
- // we must specify wxSOCKET_LOST_FLAG here explicitly because we must return
- // true if the connection establishment process is finished, whether it is
- // over because we successfully connected or because we were not able to
- // connect
- return DoWait(seconds, milliseconds,
- wxSOCKET_CONNECTION_FLAG | wxSOCKET_LOST_FLAG);
+ // 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;
}
// ==========================================================================
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
+
#endif // wxUSE_SOCKETS
projects / wxWidgets.git / blobdiff