/////////////////////////////////////////////////////////////////////////////
-// Name: socket.cpp
+// Name: src/common/socket.cpp
// Purpose: Socket handler classes
// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia
// Created: April 1997
-// Updated: September 1999
-// Copyright: (C) 1999, 1998, 1997, Guilhem Lavaux
-// (C) 1999, Guillermo Rodriguez Garcia
+// Copyright: (C) 1999-1997, Guilhem Lavaux
+// (C) 1999-2000, Guillermo Rodriguez Garcia
+// (C) 2008 Vadim Zeitlin
// RCS_ID: $Id$
-// License: see wxWindows license
+// License: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "socket.h"
-#endif
+// ==========================================================================
+// Declarations
+// ==========================================================================
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#if wxUSE_SOCKETS
-/////////////////////////////////////////////////////////////////////////////
-// wxWindows headers
-/////////////////////////////////////////////////////////////////////////////
-#include "wx/defs.h"
-#include "wx/object.h"
-#include "wx/string.h"
-#include "wx/timer.h"
-#include "wx/utils.h"
-#include "wx/module.h"
-#include "wx/log.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
+#include "wx/socket.h"
-/////////////////////////////////////////////////////////////////////////////
-// wxSocket headers
-/////////////////////////////////////////////////////////////////////////////
+#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
+
+#include "wx/apptrait.h"
#include "wx/sckaddr.h"
-#include "wx/socket.h"
+#include "wx/stopwatch.h"
+#include "wx/thread.h"
+#include "wx/evtloop.h"
+#include "wx/private/fd.h"
+#include "wx/private/socket.h"
-#if defined(__WXMSW__) || defined(__WXPM__)
-#define PROCESS_EVENTS() wxYield()
-#elif defined(__WXGTK__)
-#include <gtk/gtk.h>
-#define PROCESS_EVENTS() gtk_main_iteration()
-#endif
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxNet")
+
+// --------------------------------------------------------------------------
+// macros and constants
+// --------------------------------------------------------------------------
+
+// discard buffer
+#define MAX_DISCARD_SIZE (10 * 1024)
+
+#define wxTRACE_Socket _T("wxSocket")
+// --------------------------------------------------------------------------
+// wxWin macros
+// --------------------------------------------------------------------------
-// --------------------------------------------------------------
-// ClassInfos
-// --------------------------------------------------------------
-#if !USE_SHARED_LIBRARY
IMPLEMENT_CLASS(wxSocketBase, wxObject)
IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
+IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)
IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
-#endif
+
+// --------------------------------------------------------------------------
+// private classes
+// --------------------------------------------------------------------------
class wxSocketState : public wxObject
{
public:
- bool notify_state;
- GSocketEventFlags evt_notify_state;
- wxSocketBase::wxSockFlags socket_flags;
- wxSocketBase::wxSockCbk c_callback;
- char *c_callback_data;
+ wxSocketFlags m_flags;
+ wxSocketEventFlags m_eventmask;
+ bool m_notify;
+ void *m_clientData;
public:
- wxSocketState() : wxObject() {}
+ wxSocketState() : wxObject() {}
+
+ 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)
};
-// --------------------------------------------------------------
-// wxSocketBase ctor and dtor
-// --------------------------------------------------------------
+// ============================================================================
+// wxSocketManager
+// ============================================================================
+
+wxSocketManager *wxSocketManager::ms_manager = NULL;
-wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
- wxSocketBase::wxSockType _type) :
- wxEvtHandler(),
- m_socket(NULL), m_id(-1),
- m_flags(_flags), m_type(_type),
- m_neededreq(0), m_notify_state(FALSE),
- m_connected(FALSE), m_establishing(FALSE),
- m_reading(FALSE), m_writing(FALSE),
- m_error(FALSE), m_lcount(0), m_timeout(600), m_states(),
- m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),
- m_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL),
- m_cbk(NULL), m_cdata(NULL)
+/* static */
+void wxSocketManager::Set(wxSocketManager *manager)
{
+ wxASSERT_MSG( !ms_manager, "too late to set manager now" );
+
+ ms_manager = manager;
}
-wxSocketBase::wxSocketBase() :
- wxEvtHandler(),
- m_socket(NULL), m_id(-1),
- m_flags(NONE), m_type(SOCK_UNINIT),
- m_neededreq(0), m_notify_state(FALSE),
- m_connected(FALSE), m_establishing(FALSE),
- m_reading(FALSE), m_writing(FALSE),
- m_error(FALSE), m_lcount(0), m_timeout(600), m_states(),
- m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),
- m_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL),
- m_cbk(NULL), m_cdata(NULL)
+/* static */
+void wxSocketManager::Init()
{
+ wxASSERT_MSG( !ms_manager, "shouldn't be initialized twice" );
+
+ /*
+ 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" );
+
+ wxAppConsole * const app = wxAppConsole::GetInstance();
+ wxCHECK_RET( app, "sockets can't be initialized without wxApp" );
+
+ ms_manager = app->GetTraits()->GetSocketManager();
}
-wxSocketBase::~wxSocketBase()
+// ==========================================================================
+// wxSocketImpl
+// ==========================================================================
+
+wxSocketImpl::wxSocketImpl(wxSocketBase& wxsocket)
+ : m_wxsocket(&wxsocket)
{
- if (m_unread)
- free(m_unread);
+ m_fd = INVALID_SOCKET;
+ m_detected = 0;
+ m_local = NULL;
+ m_peer = NULL;
+ m_error = wxSOCKET_NOERROR;
+ m_server = false;
+ m_stream = true;
+ m_non_blocking = false;
+
+ SetTimeout(wxsocket.GetTimeout() * 1000);
+
+ m_establishing = false;
+ m_reusable = false;
+ m_broadcast = false;
+ m_dobind = true;
+ m_initialRecvBufferSize = -1;
+ m_initialSendBufferSize = -1;
+}
- // Shutdown and close the socket
- Close();
+wxSocketImpl::~wxSocketImpl()
+{
+ if (m_fd != INVALID_SOCKET)
+ Shutdown();
+
+ if (m_local)
+ GAddress_destroy(m_local);
- // Destroy the GSocket object
- if (m_socket)
- GSocket_destroy(m_socket);
+ if (m_peer)
+ GAddress_destroy(m_peer);
}
-bool wxSocketBase::Close()
+bool wxSocketImpl::PreCreateCheck(GAddress *addr)
{
- if (m_socket)
- {
- // Disable callbacks
- GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
- GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG);
-
- // Shutdown the connection
- GSocket_Shutdown(m_socket);
- m_connected = FALSE;
- m_establishing = FALSE;
- }
+ if ( m_fd != INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_INVSOCK;
+ return false;
+ }
+
+ if ( !addr || !addr->m_addr )
+ {
+ m_error = wxSOCKET_INVADDR;
+ return false;
+ }
- return TRUE;
+ return true;
}
-// --------------------------------------------------------------
-// wxSocketBase basic IO operations
-// --------------------------------------------------------------
+void wxSocketImpl::PostCreation()
+{
+ // FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option
+#ifdef SO_NOSIGPIPE
+ EnableSocketOption(SO_NOSIGPIPE);
+#endif
-// All IO operations {Read, Write, ReadMsg, WriteMsg, Peek,
-// Unread, Discard} update m_error and m_lcount.
-//
-// TODO: Should Connect, Accept and AcceptWith update m_error?
+ if ( m_reusable )
+ EnableSocketOption(SO_REUSEADDR);
-class _wxSocketInternalTimer: public wxTimer
-{
-public:
- int *m_state;
- unsigned long m_new_val;
+ if ( m_broadcast )
+ {
+ wxASSERT_MSG( !m_stream, "broadcasting is for datagram sockets only" );
- void Notify()
- {
- *m_state = m_new_val; // Change the value
- }
-};
+ EnableSocketOption(SO_BROADCAST);
+ }
+
+ if ( m_initialRecvBufferSize >= 0 )
+ SetSocketOption(SO_RCVBUF, m_initialRecvBufferSize);
+ 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
+ UnblockAndRegisterWithEventLoop();
+}
-wxUint32 wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)
+wxSocketError wxSocketImpl::UpdateLocalAddress()
{
- // Timer for timeout
- _wxSocketInternalTimer timer;
+ WX_SOCKLEN_T lenAddr;
+ if ( getsockname(m_fd, m_local->m_addr, &lenAddr) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
- //wxLogMessage("Entrando a DeferRead, nbytes = %d", nbytes);
- wxASSERT(m_defering == NO_DEFER);
+ m_local->m_len = lenAddr;
- // Set the defering mode to READ.
- m_defering = DEFER_READ;
+ return wxSOCKET_NOERROR;
+}
- // Set the current buffer.
- m_defer_buffer = buffer;
- m_defer_nbytes = nbytes;
- m_defer_timer = &timer;
+wxSocketError wxSocketImpl::CreateServer()
+{
+ if ( !PreCreateCheck(m_local) )
+ return m_error;
- timer.m_state = (int *)&m_defer_buffer;
- timer.m_new_val = 0;
+ m_server = true;
+ m_stream = true;
- timer.Start(m_timeout * 1000, FALSE);
+ // do create the socket
+ m_fd = socket(m_local->m_realfamily, SOCK_STREAM, 0);
- // If the socket is readable, call DoDefer for the first time
- if (GSocket_Select(m_socket, GSOCK_INPUT_FLAG))
- {
- //wxLogMessage("Llamando al primer DoDefer");
- DoDefer();
- }
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
- // Wait for buffer completion.
- while (m_defer_buffer != NULL)
- PROCESS_EVENTS();
+ PostCreation();
- timer.Stop();
+ // and then bind to and listen on it
+ //
+ // FIXME: should we test for m_dobind here?
+ if ( bind(m_fd, m_local->m_addr, m_local->m_len) != 0 )
+ m_error = wxSOCKET_IOERR;
- // Disable defering mode.
- m_defering = NO_DEFER;
- m_defer_timer = NULL;
+ if ( IsOk() )
+ {
+ if ( listen(m_fd, 5) != 0 )
+ m_error = wxSOCKET_IOERR;
+ }
- // Return the number of bytes read from the socket.
- //wxLogMessage("Saliendo de DeferRead: total: %d bytes", nbytes - m_defer_nbytes);
- return nbytes-m_defer_nbytes;
+ if ( !IsOk() )
+ {
+ Close();
+ return m_error;
+ }
+
+ // finally retrieve the address we effectively bound to
+ return UpdateLocalAddress();
}
-wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes)
+wxSocketError wxSocketImpl::CreateClient()
{
- // Mask read events
- m_reading = TRUE;
+ if ( !PreCreateCheck(m_peer) )
+ return m_error;
+
+ m_fd = socket(m_peer->m_realfamily, SOCK_STREAM, 0);
- m_lcount = _Read(buffer, nbytes);
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
- // If in WAITALL mode, all bytes should have been read.
- if (m_flags & WAITALL)
- m_error = (m_lcount != nbytes);
- else
- m_error = (m_lcount == 0);
+ PostCreation();
- // Trigger another read event if there is still data available.
- m_reading = FALSE;
- // TODO: TriggerRead
+ // If a local address has been set, then bind to it before calling connect
+ if ( m_local && m_local->m_addr )
+ {
+ if ( bind(m_fd, m_local->m_addr, m_local->m_len) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
+ }
- return *this;
+ // 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));
}
-wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)
+
+wxSocketError wxSocketImpl::CreateUDP()
{
- int total;
- int ret = 1;
+ if ( !PreCreateCheck(m_local) )
+ return m_error;
- // we try this even if the connection has already been closed.
- total = GetPushback(buffer, nbytes, FALSE);
- nbytes -= total;
- buffer += total;
+ m_stream = false;
+ m_server = false;
- // If the socket is not connected, or we have got the whole
- // needed buffer, return immedately
- if (!m_connected || !m_socket || !nbytes)
- return total;
+ m_fd = socket(m_local->m_realfamily, SOCK_DGRAM, 0);
- // Possible combinations (they are checked in this order)
- // NOWAIT
- // SPEED | WAITALL
- // SPEED
- // WAITALL
- // NONE
- //
- if (m_flags & NOWAIT) // NOWAIT
- {
- GSocket_SetNonBlocking(m_socket, TRUE);
- ret = GSocket_Read(m_socket, buffer, nbytes);
- GSocket_SetNonBlocking(m_socket, FALSE);
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
- if (ret > 0)
- total += ret;
- }
- else if ((m_flags & SPEED) && (m_flags & WAITALL)) // SPEED, WAITALL
- {
- while (ret > 0 && nbytes > 0)
+ PostCreation();
+
+ if ( m_dobind )
{
- ret = GSocket_Read(m_socket, buffer, nbytes);
- total += ret;
- buffer += ret;
- nbytes -= ret;
+ if ( bind(m_fd, m_local->m_addr, m_local->m_len) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
+
+ return UpdateLocalAddress();
}
- // In case the last call was an error ...
- if (ret < 0)
- total++;
- }
- else if (m_flags & SPEED) // SPEED, !WAITALL
- {
- ret = GSocket_Read(m_socket, buffer, nbytes);
- if (ret > 0)
- total += ret;
- }
- else // NONE or WAITALL
- {
- ret = DeferRead(buffer, nbytes);
+ return wxSOCKET_NOERROR;
+}
- if (ret > 0)
- total += ret;
- }
- return total;
+void wxSocketImpl::Close()
+{
+ if ( m_fd != INVALID_SOCKET )
+ {
+ DoClose();
+ m_fd = INVALID_SOCKET;
+ }
+}
+
+/*
+ * Disallow further read/write operations on this socket, close
+ * the fd and disable all callbacks.
+ */
+void wxSocketImpl::Shutdown()
+{
+ if ( m_fd != INVALID_SOCKET )
+ {
+ shutdown(m_fd, 1 /* SD_SEND */);
+ Close();
+ }
+
+ m_detected = wxSOCKET_LOST_FLAG;
}
-wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
+/*
+ * Sets the timeout for blocking calls. Time is expressed in
+ * milliseconds.
+ */
+void wxSocketImpl::SetTimeout(unsigned long millis)
{
-#define MAX_DISCARD_SIZE (10 * 1024)
+ m_timeout.tv_sec = (millis / 1000);
+ m_timeout.tv_usec = (millis % 1000) * 1000;
+}
+
+void wxSocketImpl::NotifyOnStateChange(wxSocketNotify event)
+{
+ m_wxsocket->OnRequest(event);
+}
- wxUint32 len, len2, sig, total;
- bool error;
- int old_flags;
- struct
+/* Address handling */
+
+/*
+ * Set or get the local or peer address for this socket. The 'set'
+ * functions return wxSOCKET_NOERROR on success, an error code otherwise.
+ * The 'get' functions return a pointer to a GAddress object on success,
+ * or NULL otherwise, in which case they set the error code of the
+ * corresponding socket.
+ *
+ * Error codes:
+ * wxSOCKET_INVSOCK - the socket is not valid.
+ * wxSOCKET_INVADDR - the address is not valid.
+ */
+wxSocketError wxSocketImpl::SetLocal(GAddress *address)
+{
+ /* the socket must be initialized, or it must be a server */
+ if (m_fd != INVALID_SOCKET && !m_server)
{
- unsigned char sig[4];
- unsigned char len[4];
- } msg;
+ m_error = wxSOCKET_INVSOCK;
+ return wxSOCKET_INVSOCK;
+ }
- // Mask read events
- m_reading = TRUE;
+ /* check address */
+ if (address == NULL || address->m_family == wxSOCKET_NOFAMILY)
+ {
+ m_error = wxSOCKET_INVADDR;
+ return wxSOCKET_INVADDR;
+ }
- total = 0;
- error = TRUE;
- old_flags = m_flags;
- SetFlags((m_flags & SPEED) | WAITALL);
+ if (m_local)
+ GAddress_destroy(m_local);
- if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
- goto exit;
+ m_local = GAddress_copy(address);
- sig = (wxUint32)msg.sig[0];
- sig |= (wxUint32)(msg.sig[1] << 8);
- sig |= (wxUint32)(msg.sig[2] << 16);
- sig |= (wxUint32)(msg.sig[3] << 24);
+ return wxSOCKET_NOERROR;
+}
- if (sig != 0xfeeddead)
+wxSocketError wxSocketImpl::SetPeer(GAddress *address)
+{
+ /* check address */
+ if (address == NULL || address->m_family == wxSOCKET_NOFAMILY)
{
- wxLogMessage(wxT("Warning: invalid signature returned to ReadMsg"));
- goto exit;
+ m_error = wxSOCKET_INVADDR;
+ return wxSOCKET_INVADDR;
}
- len = (wxUint32)msg.len[0];
- len |= (wxUint32)(msg.len[1] << 8);
- len |= (wxUint32)(msg.len[2] << 16);
- len |= (wxUint32)(msg.len[3] << 24);
+ if (m_peer)
+ GAddress_destroy(m_peer);
+
+ m_peer = GAddress_copy(address);
+
+ return wxSOCKET_NOERROR;
+}
+
+GAddress *wxSocketImpl::GetLocal()
+{
+ GAddress *address;
+ wxSockAddr addr;
+ WX_SOCKLEN_T size = sizeof(addr);
+ wxSocketError err;
- //wxLogMessage("Readmsg: %d %d %d %d -> len == %d",
- // msg.len[0], msg.len[1], msg.len[2], msg.len[3], len);
+ /* try to get it from the m_local var first */
+ if (m_local)
+ return GAddress_copy(m_local);
- if (len > nbytes)
+ /* else, if the socket is initialized, try getsockname */
+ if (m_fd == INVALID_SOCKET)
{
- len2 = len - nbytes;
- len = nbytes;
+ m_error = wxSOCKET_INVSOCK;
+ return NULL;
}
- else
- len2 = 0;
- // This check is necessary so that we don't attemp to read if
- // the msg was zero bytes long.
- if (len)
+ if (getsockname(m_fd, (sockaddr*)&addr, &size) == SOCKET_ERROR)
{
- total = _Read(buffer, len);
+ m_error = wxSOCKET_IOERR;
+ return NULL;
+ }
- if (total != len)
- goto exit;
+ /* got a valid address from getsockname, create a GAddress object */
+ if ((address = GAddress_new()) == NULL)
+ {
+ m_error = wxSOCKET_MEMERR;
+ return NULL;
}
- if (len2)
+
+ if ((err = _GAddress_translate_from(address, (sockaddr*)&addr, size)) != wxSOCKET_NOERROR)
{
- char *discard_buffer = new char[MAX_DISCARD_SIZE];
- long discard_len;
+ GAddress_destroy(address);
+ m_error = err;
+ return NULL;
+ }
- // NOTE: discarded bytes don't add to m_lcount.
- do
- {
- discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2);
- discard_len = _Read(discard_buffer, discard_len);
- len2 -= discard_len;
- }
- while ((discard_len > 0) && len2);
+ return address;
+}
- delete [] discard_buffer;
+GAddress *wxSocketImpl::GetPeer()
+{
+ /* try to get it from the m_peer var */
+ if (m_peer)
+ return GAddress_copy(m_peer);
- if (len2 != 0)
- goto exit;
- }
- if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
- goto exit;
+ return NULL;
+}
- sig = (wxUint32)msg.sig[0];
- sig |= (wxUint32)(msg.sig[1] << 8);
- sig |= (wxUint32)(msg.sig[2] << 16);
- sig |= (wxUint32)(msg.sig[3] << 24);
+// ==========================================================================
+// wxSocketBase
+// ==========================================================================
- if (sig != 0xdeadfeed)
- {
- //wxLogMessage(wxT("Warning: invalid signature returned to ReadMsg"));
- goto exit;
- }
+// --------------------------------------------------------------------------
+// Initialization and shutdown
+// --------------------------------------------------------------------------
- // everything was OK
- error = FALSE;
+// FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses
+// to m_countInit with a crit section
+size_t wxSocketBase::m_countInit = 0;
-exit:
- m_error = error;
- m_lcount = total;
- m_reading = FALSE;
- SetFlags(old_flags);
+bool wxSocketBase::IsInitialized()
+{
+ return m_countInit > 0;
+}
- // TODO: TriggerRead
- return *this;
+bool wxSocketBase::Initialize()
+{
+ if ( !m_countInit++ )
+ {
+ wxSocketManager * const manager = wxSocketManager::Get();
+ if ( !manager || !manager->OnInit() )
+ {
+ m_countInit--;
+
+ return false;
+ }
+ }
-#undef MAX_DISCARD_SIZE
+ return true;
}
-wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes)
+void wxSocketBase::Shutdown()
{
- // Mask read events
- m_reading = TRUE;
+ // we should be initialized
+ wxASSERT_MSG( m_countInit > 0, _T("extra call to Shutdown()") );
+ if ( --m_countInit == 0 )
+ {
+ wxSocketManager * const manager = wxSocketManager::Get();
+ wxCHECK_RET( manager, "should have a socket manager" );
- m_lcount = _Read(buffer, nbytes);
- Pushback(buffer, nbytes);
+ manager->OnExit();
+ }
+}
- // If in WAITALL mode, all bytes should have been read.
- if (m_flags & WAITALL)
- m_error = (m_lcount != nbytes);
- else
- m_error = (m_lcount == 0);
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------
- // Trigger another read event if there is still data available.
- m_reading = FALSE;
+void wxSocketBase::Init()
+{
+ m_impl = NULL;
+ m_type = wxSOCKET_UNINIT;
+
+ // state
+ m_flags = 0;
+ m_connected =
+ m_establishing =
+ m_reading =
+ m_writing =
+ m_error =
+ 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 = 0;
+
+ if ( !IsInitialized() )
+ {
+ // this Initialize() will be undone by wxSocketModule::OnExit(), all
+ // the other calls to it should be matched by a call to Shutdown()
+ Initialize();
+ }
+}
- // TODO: TriggerRead
- return *this;
+wxSocketBase::wxSocketBase()
+{
+ Init();
}
-wxUint32 wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes)
+wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
{
- // Timer for timeout
- _wxSocketInternalTimer timer;
+ Init();
- wxASSERT(m_defering == NO_DEFER);
- //wxLogMessage("Entrando a DeferWrite");
+ SetFlags(flags);
- m_defering = DEFER_WRITE;
+ m_type = type;
+}
- // Set the current buffer
- m_defer_buffer = (char *)buffer;
- m_defer_nbytes = nbytes;
- m_defer_timer = &timer;
+wxSocketBase::~wxSocketBase()
+{
+ // Just in case the app called Destroy() *and* then deleted the socket
+ // immediately: don't leave dangling pointers.
+ wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+ if ( traits )
+ traits->RemoveFromPendingDelete(this);
+
+ // Shutdown and close the socket
+ if (!m_beingDeleted)
+ Close();
+
+ // Destroy the implementation object
+ delete m_impl;
+
+ // Free the pushback buffer
+ if (m_unread)
+ free(m_unread);
+}
- // Start timer
- timer.m_state = (int *)&m_defer_buffer;
- timer.m_new_val = 0;
+bool wxSocketBase::Destroy()
+{
+ // 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;
- timer.Start(m_timeout * 1000, FALSE);
+ // Shutdown and close the socket
+ Close();
- // If the socket is writable, call DoDefer for the first time
- if (GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG))
- {
- //wxLogMessage("Llamando al primer DoDefer");
- DoDefer();
- }
+ // Supress events from now on
+ Notify(false);
+
+ // schedule this object for deletion
+ wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+ if ( traits )
+ {
+ // let the traits object decide what to do with us
+ traits->ScheduleForDestroy(this);
+ }
+ else // no app or no traits
+ {
+ // in wxBase we might have no app object at all, don't leak memory
+ delete this;
+ }
+
+ return true;
+}
+
+// ----------------------------------------------------------------------------
+// simply accessors
+// ----------------------------------------------------------------------------
- // Wait for buffer completion.
- while (m_defer_buffer != NULL)
- PROCESS_EVENTS();
+wxSocketError wxSocketBase::LastError() const
+{
+ return m_impl->GetError();
+}
+
+// --------------------------------------------------------------------------
+// Basic IO calls
+// --------------------------------------------------------------------------
- timer.Stop();
+// 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?
- // Disable defering mode
- m_defer_timer = NULL;
- m_defering = NO_DEFER;
+bool wxSocketBase::Close()
+{
+ // Interrupt pending waits
+ InterruptWait();
- wxString s;
- s.Printf("Saliendo de DeferWrite: total %d bytes", nbytes-m_defer_nbytes);
- //wxLogMessage(s);
+ if (m_impl)
+ m_impl->Shutdown();
- return nbytes-m_defer_nbytes;
+ m_connected = false;
+ m_establishing = false;
+ return true;
}
-wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes)
{
- // Mask write events
- m_writing = TRUE;
+ // Mask read events
+ m_reading = true;
- m_lcount = _Write(buffer, nbytes);
+ m_lcount = DoRead(buffer, nbytes);
- // If in WAITALL mode, all bytes should have been written.
- if (m_flags & WAITALL)
- m_error = (m_lcount != nbytes);
- else
- m_error = (m_lcount == 0);
+ // If in wxSOCKET_WAITALL mode, all bytes should have been read.
+ if (m_flags & wxSOCKET_WAITALL)
+ m_error = (m_lcount != nbytes);
+ else
+ m_error = (m_lcount == 0);
- // Trigger another write event if the socket is still writable
- m_writing = FALSE;
+ // Allow read events from now on
+ m_reading = false;
- // TODO: TriggerWrite
- return *this;
+ return *this;
}
-wxUint32 wxSocketBase::_Write(const char *buffer, wxUint32 nbytes)
+wxUint32 wxSocketBase::DoRead(void* buffer_, wxUint32 nbytes)
{
- wxUint32 total = 0;
- int ret = 1;
+ // We use pointer arithmetic here which doesn't work with void pointers.
+ char *buffer = static_cast<char *>(buffer_);
- if (!m_connected || !m_socket)
- return 0;
+ // 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;
- // Possible combinations (they are checked in this order)
- // NOWAIT
- // SPEED | WAITALL
- // SPEED
- // WAITALL
- // NONE
- //
- if (m_flags & NOWAIT) // NOWAIT
- {
- GSocket_SetNonBlocking(m_socket, TRUE);
- ret = GSocket_Write(m_socket, buffer, nbytes);
- GSocket_SetNonBlocking(m_socket, FALSE);
+ // If it's indeed closed or if read everything, there is nothing more to do.
+ if ( !m_impl || !nbytes )
+ return total;
- if (ret > 0)
- total = ret;
- }
- else if ((m_flags & SPEED) && (m_flags & WAITALL)) // SPEED, WAITALL
- {
- while (ret > 0 && nbytes > 0)
- {
- ret = GSocket_Write(m_socket, buffer, nbytes);
- total += ret;
- buffer += ret;
- nbytes -= ret;
- }
- // In case the last call was an error ...
- if (ret < 0)
- total ++;
- }
- else if (m_flags & SPEED) // SPEED, !WAITALL
- {
- ret = GSocket_Write(m_socket, buffer, nbytes);
+ wxCHECK_MSG( buffer, 0, "NULL buffer" );
- if (ret > 0)
- total = ret;
- }
- else // NONE or WAITALL
- {
- ret = DeferWrite(buffer, nbytes);
- if (ret > 0)
- total = ret;
- }
+ // wxSOCKET_NOWAIT overrides all the other flags and means that we are
+ // 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;
- return total;
+ total += ret;
+ }
+ else // blocking socket
+ {
+ 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() )
+ break;
+
+ const int ret = m_impl->Read(buffer, nbytes);
+ 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;
+ break;
+ }
+
+ if ( ret < 0 )
+ {
+ // this will be always interpreted as error by Read()
+ return 0;
+ }
+
+ total += ret;
+
+ // If wxSOCKET_WAITALL is not set, we can leave now as we did read
+ // something and we don't need to wait for all nbytes bytes to be
+ // read.
+ if ( !(m_flags & wxSOCKET_WAITALL) )
+ break;
+
+ // Otherwise continue reading until we do read everything.
+ nbytes -= ret;
+ if ( !nbytes )
+ break;
+
+ buffer += ret;
+ }
+ }
+
+ return total;
}
-wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes)
{
- wxUint32 total;
- bool error;
- int old_flags;
- struct {
- unsigned char sig[4];
- unsigned char len[4];
- } msg;
+ wxUint32 len, len2, sig, total;
+ bool error;
+ int old_flags;
+ struct
+ {
+ unsigned char sig[4];
+ unsigned char len[4];
+ } msg;
- // Mask write events
- m_writing = TRUE;
+ // Mask read events
+ m_reading = true;
- error = TRUE;
- total = 0;
- old_flags = m_flags;
- SetFlags((m_flags & SPEED) | WAITALL);
+ total = 0;
+ error = true;
+ old_flags = m_flags;
+ SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
- // warning about 'cast truncates constant value'
-#ifdef __VISUALC__
-# pragma warning(disable: 4310)
-#endif // __VISUALC__
+ if (DoRead(&msg, sizeof(msg)) != sizeof(msg))
+ goto exit;
- msg.sig[0] = (unsigned char) 0xad;
- msg.sig[1] = (unsigned char) 0xde;
- msg.sig[2] = (unsigned char) 0xed;
- msg.sig[3] = (unsigned char) 0xfe;
+ sig = (wxUint32)msg.sig[0];
+ sig |= (wxUint32)(msg.sig[1] << 8);
+ sig |= (wxUint32)(msg.sig[2] << 16);
+ sig |= (wxUint32)(msg.sig[3] << 24);
- 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;
+ if (sig != 0xfeeddead)
+ {
+ wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
+ goto exit;
+ }
- //wxLogMessage("Writemsg: %d %d %d %d -> %d",
- // nbytes & 0xff,
- // (nbytes >> 8) & 0xff,
- // (nbytes >> 16) & 0xff,
- // (nbytes >> 24) & 0xff,
- // nbytes
- // );
+ len = (wxUint32)msg.len[0];
+ len |= (wxUint32)(msg.len[1] << 8);
+ len |= (wxUint32)(msg.len[2] << 16);
+ len |= (wxUint32)(msg.len[3] << 24);
- if (_Write((char *)&msg, sizeof(msg)) < sizeof(msg))
- goto exit;
+ if (len > nbytes)
+ {
+ len2 = len - nbytes;
+ len = nbytes;
+ }
+ else
+ len2 = 0;
- total = _Write(buffer, nbytes);
+ // Don't attempt to read if the msg was zero bytes long.
+ if (len)
+ {
+ total = DoRead(buffer, len);
+
+ if (total != len)
+ goto exit;
+ }
- if (total < nbytes)
- goto exit;
+ if (len2)
+ {
+ char *discard_buffer = new char[MAX_DISCARD_SIZE];
+ long discard_len;
+
+ // NOTE: discarded bytes don't add to m_lcount.
+ do
+ {
+ discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2);
+ discard_len = DoRead(discard_buffer, (wxUint32)discard_len);
+ len2 -= (wxUint32)discard_len;
+ }
+ while ((discard_len > 0) && len2);
+
+ delete [] discard_buffer;
+
+ if (len2 != 0)
+ goto exit;
+ }
+ if (DoRead(&msg, sizeof(msg)) != sizeof(msg))
+ goto exit;
- msg.sig[0] = (unsigned char) 0xed;
- msg.sig[1] = (unsigned char) 0xfe;
- msg.sig[2] = (unsigned char) 0xad;
- msg.sig[3] = (unsigned char) 0xde;
- msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
+ sig = (wxUint32)msg.sig[0];
+ sig |= (wxUint32)(msg.sig[1] << 8);
+ sig |= (wxUint32)(msg.sig[2] << 16);
+ sig |= (wxUint32)(msg.sig[3] << 24);
- if ((_Write((char *)&msg, sizeof(msg))) < sizeof(msg))
- goto exit;
+ if (sig != 0xdeadfeed)
+ {
+ wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
+ goto exit;
+ }
- // everything was OK
- error = FALSE;
+ // everything was OK
+ error = false;
exit:
- m_error = error;
- m_lcount = total;
- m_writing = FALSE;
+ m_error = error;
+ m_lcount = total;
+ m_reading = false;
+ SetFlags(old_flags);
- // TODO: TriggerWrite
- return *this;
-
-#ifdef __VISUALC__
-# pragma warning(default: 4310)
-#endif // __VISUALC__
+ return *this;
}
-wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes)
{
- if (nbytes != 0)
- Pushback(buffer, nbytes);
+ // Mask read events
+ m_reading = true;
+
+ m_lcount = DoRead(buffer, nbytes);
+ Pushback(buffer, m_lcount);
+
+ // If in wxSOCKET_WAITALL mode, all bytes should have been read.
+ if (m_flags & wxSOCKET_WAITALL)
+ m_error = (m_lcount != nbytes);
+ else
+ m_error = (m_lcount == 0);
- m_error = FALSE;
- m_lcount = nbytes;
+ // Allow read events again
+ m_reading = false;
- return *this;
+ return *this;
}
-void wxSocketBase::DoDefer()
+wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes)
{
- int ret;
+ // Mask write events
+ m_writing = true;
- if (!m_defer_buffer)
- return;
+ m_lcount = DoWrite(buffer, nbytes);
- switch(m_defering)
- {
- case DEFER_READ:
- ret = GSocket_Read(m_socket, m_defer_buffer, m_defer_nbytes);
- break;
- case DEFER_WRITE:
- ret = GSocket_Write(m_socket, m_defer_buffer, m_defer_nbytes);
- break;
- default:
- ret = -1;
- }
+ // If in wxSOCKET_WAITALL mode, all bytes should have been written.
+ if (m_flags & wxSOCKET_WAITALL)
+ m_error = (m_lcount != nbytes);
+ else
+ m_error = (m_lcount == 0);
- if (ret >= 0)
- m_defer_nbytes -= ret;
-
- // If we are waiting for all bytes to be acquired, keep the defering
- // mode enabled.
- if (!(m_flags & WAITALL) || !m_defer_nbytes || ret < 0)
- {
- m_defer_buffer = NULL;
- }
- else
- {
- m_defer_buffer += ret;
- m_defer_timer->Start(m_timeout * 1000, FALSE);
- }
+ // Allow write events again
+ m_writing = false;
- //wxLogMessage("DoDefer ha transferido %d bytes", ret);
+ return *this;
}
-wxSocketBase& wxSocketBase::Discard()
+// This function is a mirror image of DoRead() except that it doesn't use the
+// push back buffer, please see comments there
+wxUint32 wxSocketBase::DoWrite(const void *buffer_, wxUint32 nbytes)
{
-#define MAX_BUFSIZE (10*1024)
+ const char *buffer = static_cast<const char *>(buffer_);
- int old_flags;
- char *my_data = new char[MAX_BUFSIZE];
- wxUint32 recv_size = MAX_BUFSIZE;
- wxUint32 total = 0;
+ // Return if there is nothing to read or the socket is (already?) closed.
+ if ( !m_impl || !nbytes )
+ return 0;
- // Mask read events
- m_reading = TRUE;
+ wxCHECK_MSG( buffer, 0, "NULL buffer" );
- old_flags = m_flags;
- SetFlags(NOWAIT);
+ 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;
+ }
+ else // blocking socket
+ {
+ for ( ;; )
+ {
+ if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
+ break;
+
+ const int ret = m_impl->Write(buffer, nbytes);
+ if ( ret == 0 )
+ {
+ m_closed = true;
+ break;
+ }
+
+ if ( ret < 0 )
+ return 0;
+
+ total += ret;
+ if ( !(m_flags & wxSOCKET_WAITALL) )
+ break;
+
+ nbytes -= ret;
+ if ( !nbytes )
+ break;
+
+ buffer += ret;
+ }
+ }
- while (recv_size == MAX_BUFSIZE)
- {
- recv_size = _Read(my_data, MAX_BUFSIZE);
- total += recv_size;
- }
+ return total;
+}
- delete [] my_data;
- m_lcount = total;
- m_error = FALSE;
+wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes)
+{
+ wxUint32 total;
+ bool error;
+ struct
+ {
+ unsigned char sig[4];
+ unsigned char len[4];
+ } msg;
- // Trigger another read event if there is still data available.
- m_reading = FALSE;
+ // Mask write events
+ m_writing = true;
- // TODO: TriggerRead
- return *this;
+ error = true;
+ total = 0;
+ SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
-#undef MAX_BUFSIZE
-}
+ msg.sig[0] = (unsigned char) 0xad;
+ msg.sig[1] = (unsigned char) 0xde;
+ msg.sig[2] = (unsigned char) 0xed;
+ msg.sig[3] = (unsigned char) 0xfe;
-// --------------------------------------------------------------
-// wxSocketBase get local or peer addresses
-// --------------------------------------------------------------
+ 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 wxSocketBase::GetPeer(wxSockAddress& addr_man) const
-{
- GAddress *peer;
+ if (DoWrite(&msg, sizeof(msg)) < sizeof(msg))
+ goto exit;
- if (!m_socket)
- return FALSE;
+ total = DoWrite(buffer, nbytes);
- peer = GSocket_GetPeer(m_socket);
- addr_man.SetAddress(peer);
- GAddress_destroy(peer);
+ if (total < nbytes)
+ goto exit;
- return TRUE;
-}
+ 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;
-bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
-{
- GAddress *local;
+ if ((DoWrite(&msg, sizeof(msg))) < sizeof(msg))
+ goto exit;
- if (!m_socket)
- return FALSE;
+ // everything was OK
+ error = false;
- local = GSocket_GetLocal(m_socket);
- addr_man.SetAddress(local);
- GAddress_destroy(local);
+exit:
+ m_error = error;
+ m_lcount = total;
+ m_writing = false;
- return TRUE;
+ return *this;
}
-// --------------------------------------------------------------
-// wxSocketBase save and restore socket state
-// --------------------------------------------------------------
-
-void wxSocketBase::SaveState()
+wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes)
{
- wxSocketState *state;
-
- state = new wxSocketState();
+ if (nbytes != 0)
+ Pushback(buffer, nbytes);
- state->notify_state = m_notify_state;
- state->evt_notify_state = m_neededreq;
- state->socket_flags = m_flags;
- state->c_callback = m_cbk;
- state->c_callback_data = m_cdata;
+ m_error = false;
+ m_lcount = nbytes;
- m_states.Append(state);
+ return *this;
}
-void wxSocketBase::RestoreState()
+wxSocketBase& wxSocketBase::Discard()
{
- wxNode *node;
- wxSocketState *state;
+ char *buffer = new char[MAX_DISCARD_SIZE];
+ wxUint32 ret;
+ wxUint32 total = 0;
- node = m_states.Last();
- if (!node)
- return;
+ // Mask read events
+ m_reading = true;
- state = (wxSocketState *)node->Data();
+ SetFlags(wxSOCKET_NOWAIT);
- SetFlags(state->socket_flags);
- m_neededreq = state->evt_notify_state;
- m_cbk = state->c_callback;
- m_cdata = state->c_callback_data;
- Notify(state->notify_state);
+ do
+ {
+ ret = DoRead(buffer, MAX_DISCARD_SIZE);
+ total += ret;
+ }
+ while (ret == MAX_DISCARD_SIZE);
- delete node;
- delete state;
-}
+ delete[] buffer;
+ m_lcount = total;
+ m_error = false;
+ // Allow read events again
+ m_reading = false;
-// --------------------------------------------------------------
-// wxSocketBase Wait functions
-// --------------------------------------------------------------
+ return *this;
+}
-// GRG: I have completely rewritten this family of functions
-// so that they don't depend on event notifications; instead,
-// they poll the socket, using GSocket_Select(), to check for
-// the specified combination of event flags, until an event
-// occurs or until the timeout ellapses. The polling loop
-// calls PROCESS_EVENTS(), so this won't block the GUI.
+// --------------------------------------------------------------------------
+// Wait functions
+// --------------------------------------------------------------------------
-bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags flags)
+/*
+ * 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.
+ */
+wxSocketEventFlags wxSocketImpl::Select(wxSocketEventFlags flags)
{
- GSocketEventFlags result;
- _wxSocketInternalTimer timer;
- long timeout;
- int state = -1;
+ assert(this);
+
+ wxSocketEventFlags result = 0;
+ fd_set readfds;
+ fd_set writefds;
+ fd_set exceptfds;
+ struct timeval tv;
+
+ if (m_fd == -1)
+ return (wxSOCKET_LOST_FLAG & flags);
+
+ /* Do not use a static struct, Linux can garble it */
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+
+ wxFD_ZERO(&readfds);
+ wxFD_ZERO(&writefds);
+ wxFD_ZERO(&exceptfds);
+ wxFD_SET(m_fd, &readfds);
+ if (flags & wxSOCKET_OUTPUT_FLAG || flags & wxSOCKET_CONNECTION_FLAG)
+ wxFD_SET(m_fd, &writefds);
+ wxFD_SET(m_fd, &exceptfds);
+
+ /* Check 'sticky' CONNECTION flag first */
+ result |= wxSOCKET_CONNECTION_FLAG & m_detected;
+
+ /* If we have already detected a LOST event, then don't try
+ * to do any further processing.
+ */
+ if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
+ {
+ m_establishing = false;
+ return (wxSOCKET_LOST_FLAG & flags);
+ }
- // Check for valid socket
- if (!m_socket)
- return FALSE;
+ /* Try select now */
+ if (select(m_fd + 1, &readfds, &writefds, &exceptfds, &tv) < 0)
+ {
+ /* What to do here? */
+ return (result & flags);
+ }
- // If it is not a server, it must be connected or establishing connection
- if ((m_type != SOCK_SERVER) && (!m_connected && !m_establishing))
- return FALSE;
+ /* Check for exceptions and errors */
+ if (wxFD_ISSET(m_fd, &exceptfds))
+ {
+ m_establishing = false;
+ m_detected = wxSOCKET_LOST_FLAG;
- // Check for valid timeout value
- if (seconds != -1)
- timeout = seconds * 1000 + milliseconds;
- else
- timeout = m_timeout * 1000;
+ /* LOST event: Abort any further processing */
+ return (wxSOCKET_LOST_FLAG & flags);
+ }
- // Activate timer
- if (timeout)
+ /* Check for readability */
+ if (wxFD_ISSET(m_fd, &readfds))
{
- timer.m_state = &state;
- timer.m_new_val = 0;
- timer.Start(timeout, TRUE);
+ result |= wxSOCKET_INPUT_FLAG;
+
+ if (m_server && m_stream)
+ {
+ /* This is a TCP server socket that detected a connection.
+ While the INPUT_FLAG is also set, it doesn't matter on
+ this kind of sockets, as we can only Accept() from them. */
+ m_detected |= wxSOCKET_CONNECTION_FLAG;
+ }
}
- // Active polling (without using events)
- //
- // NOTE: this duplicates some of the code in OnRequest (lost
- // connection and connection establishment handling) but this
- // doesn't hurt. It has to be here because the event might
- // be a bit delayed, and it has to be in OnRequest as well
- // because maybe the WaitXXX functions are not being used.
- //
- // Do this at least once (important if timeout == 0, when
- // we are just polling)
- do
+ /* Check for writability */
+ if (wxFD_ISSET(m_fd, &writefds))
{
- result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG);
+ 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)
+ {
+ m_detected = wxSOCKET_LOST_FLAG;
- // Connection lost
- if (result & GSOCK_LOST_FLAG)
+ /* LOST event: Abort any further processing */
+ return (wxSOCKET_LOST_FLAG & flags);
+ }
+ else
+ {
+ m_detected |= wxSOCKET_CONNECTION_FLAG;
+ }
+ }
+ else
{
- timer.Stop();
- m_defer_buffer = NULL;
- Close();
- return TRUE;
+ result |= wxSOCKET_OUTPUT_FLAG;
}
+ }
+
+ return (result | m_detected) & flags;
+}
- // Incoming connection (server) or connection established (client)
- if (result & GSOCK_CONNECTION_FLAG)
+// 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)
+{
+ wxCHECK_MSG( m_impl, false, "can't wait on invalid socket" );
+
+ // This can be set to true from Interrupt() to exit this function a.s.a.p.
+ m_interrupt = false;
+
+
+ // 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;
+ 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
+ wxEventLoopBase *eventLoop;
+ if ( wxIsMainThread() )
{
- timer.Stop();
- m_connected = TRUE;
- m_establishing = FALSE;
- return TRUE;
+ eventLoop = wxEventLoop::GetActive();
}
-
- // If we are in the middle of a R/W operation, do not propagate
- // to users.
- if ( ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG))
- && (!m_writing) && (!m_reading) )
+ else // in worker thread
{
-/* TODO: remove this
- if (m_defer_buffer == NULL)
-*/
- {
- timer.Stop();
- return TRUE;
- }
+ // We never dispatch messages from threads other than the main one.
+ eventLoop = NULL;
}
- if (timeout != 0)
- PROCESS_EVENTS();
- }
- while ((state == -1) && timeout);
+ // Wait in an active polling loop: notice that the loop is executed at
+ // least once, even if timeout is 0 (i.e. polling).
+ bool gotEvent = false;
+ for ( ;; )
+ {
+ // 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 )
+ {
+ m_connected = true;
+ m_establishing = false;
+ gotEvent = true;
+ break;
+ }
+
+ // Data available or output buffer ready?
+ if ( (result & wxSOCKET_INPUT_FLAG) || (result & wxSOCKET_OUTPUT_FLAG) )
+ {
+ gotEvent = true;
+ break;
+ }
+
+ // Connection lost
+ if ( result & wxSOCKET_LOST_FLAG )
+ {
+ m_connected = false;
+ m_establishing = false;
+ if ( flags & wxSOCKET_LOST_FLAG )
+ gotEvent = true;
+ break;
+ }
+
+ if ( m_interrupt )
+ break;
+
+ // Wait more?
+ const wxMilliClock_t timeNow = wxGetLocalTimeMillis();
+ if ( timeNow >= timeEnd )
+ break;
+
+ if ( eventLoop )
+ {
+ // 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();
+ }
+#if wxUSE_THREADS
+ else // no event loop or waiting in another thread
+ {
+ // We're busy waiting but at least give up the rest of our current
+ // time slice.
+ wxThread::Yield();
+ }
+#endif // wxUSE_THREADS
+ }
- timer.Stop();
- return FALSE;
+ return gotEvent;
}
bool wxSocketBase::Wait(long seconds, long milliseconds)
{
- return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
- GSOCK_OUTPUT_FLAG |
- GSOCK_CONNECTION_FLAG |
- GSOCK_LOST_FLAG);
+ return DoWait(seconds, milliseconds,
+ wxSOCKET_INPUT_FLAG |
+ wxSOCKET_OUTPUT_FLAG |
+ wxSOCKET_CONNECTION_FLAG |
+ wxSOCKET_LOST_FLAG
+ );
}
bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
{
- // Check pushback buffer
- if (m_unread)
- return TRUE;
-
- return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG);
+ // Check pushback buffer before entering DoWait
+ if ( m_unread )
+ return true;
+
+ // Note that wxSOCKET_INPUT_LOST has to be explicitly passed to DoWait
+ // because of the semantics of WaitForRead: a return value of true means
+ // that a Read call will return immediately, not that there is
+ // actually data to read.
+ return DoWait(seconds, milliseconds, wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
}
+
bool wxSocketBase::WaitForWrite(long seconds, long milliseconds)
{
- return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG);
+ return DoWait(seconds, milliseconds, wxSOCKET_OUTPUT_FLAG | wxSOCKET_LOST_FLAG);
}
bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
{
- return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
+ return DoWait(seconds, milliseconds, wxSOCKET_LOST_FLAG);
}
-void wxSocketBase::SetTimeout(long seconds)
+// --------------------------------------------------------------------------
+// Miscellaneous
+// --------------------------------------------------------------------------
+
+//
+// Get local or peer address
+//
+
+bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
{
- m_timeout = seconds;
+ GAddress *peer;
- if (m_socket)
- GSocket_SetTimeout(m_socket, m_timeout);
-}
+ if (!m_impl)
+ return false;
-// --------------------------------------------------------------
-// wxSocketBase flags
-// --------------------------------------------------------------
+ peer = m_impl->GetPeer();
-void wxSocketBase::SetFlags(wxSockFlags _flags)
-{
- m_flags = _flags;
-}
+ // copying a null address would just trigger an assert anyway
-// --------------------------------------------------------------
-// wxSocketBase callback management
-// --------------------------------------------------------------
+ if (!peer)
+ return false;
-wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
-{
- wxSockCbk old_cbk = cbk_;
+ addr_man.SetAddress(peer);
+ GAddress_destroy(peer);
- m_cbk = cbk_;
- return old_cbk;
+ return true;
}
-char *wxSocketBase::CallbackData(char *data)
+bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
{
- char *old_data = m_cdata;
+ GAddress *local;
- m_cdata = data;
- return old_data;
-}
+ if (!m_impl)
+ return false;
-// --------------------------------------------------------------
-// wxSocketBase automatic notifier
-// --------------------------------------------------------------
+ local = m_impl->GetLocal();
+ addr_man.SetAddress(local);
+ GAddress_destroy(local);
-// All events (INPUT, OUTPUT, CONNECTION, LOST) are now always
-// internally watched; but users will only be notified of those
-// events they are interested in.
+ return true;
+}
+
+//
+// Save and restore socket state
+//
-static void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
- GSocketEvent event, char *cdata)
+void wxSocketBase::SaveState()
{
- wxSocketBase *sckobj = (wxSocketBase *)cdata;
+ 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;
- sckobj->OnRequest((wxSocketNotify)event);
+ m_states.Append(state);
}
-wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt)
+void wxSocketBase::RestoreState()
{
- switch (evt)
- {
- case GSOCK_INPUT: return GSOCK_INPUT_FLAG;
- case GSOCK_OUTPUT: return GSOCK_OUTPUT_FLAG;
- case GSOCK_CONNECTION: return GSOCK_CONNECTION_FLAG;
- case GSOCK_LOST: return GSOCK_LOST_FLAG;
- }
- return 0;
+ 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;
}
-void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+//
+// Timeout and flags
+//
+
+void wxSocketBase::SetTimeout(long seconds)
{
- m_neededreq = flags;
+ m_timeout = seconds;
+
+ if (m_impl)
+ m_impl->SetTimeout(m_timeout * 1000);
}
-void wxSocketBase::Notify(bool notify)
+void wxSocketBase::SetFlags(wxSocketFlags flags)
{
- m_notify_state = notify;
+ // 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_flags = flags;
}
-void wxSocketBase::OnRequest(wxSocketNotify req_evt)
-{
- wxSocketEvent event(m_id);
- wxSocketEventFlags flag = EventToNotify(req_evt);
- // fprintf(stderr, "%s: Entering OnRequest (evt %d)\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
+// --------------------------------------------------------------------------
+// Event handling
+// --------------------------------------------------------------------------
- // NOTE: this duplicates some of the code in _Wait (lost
- // connection and connection establishment handling) but
- // this doesn't hurt. It has to be here because maybe the
- // WaitXXX are not being used, and it has to be in _Wait
- // as well because the event might be a bit delayed.
- //
- switch(req_evt)
- {
- case wxSOCKET_CONNECTION:
- m_establishing = FALSE;
- m_connected = TRUE;
- break;
- case wxSOCKET_LOST:
- m_defer_buffer = NULL;
- Close();
- break;
- case wxSOCKET_INPUT:
- case wxSOCKET_OUTPUT:
- if (m_defer_buffer)
- {
- // fprintf(stderr, "%s: Habia buffer, evt %d skipped\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
- DoDefer();
- // Do not notify to user
- return;
- }
- break;
- }
+void wxSocketBase::OnRequest(wxSocketNotify notification)
+{
+ 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;
+ break;
+
+ case wxSOCKET_OUTPUT:
+ if (m_writing || !m_impl->Select(wxSOCKET_OUTPUT_FLAG))
+ return;
+ break;
+
+ case wxSOCKET_LOST:
+ m_connected = false;
+ m_establishing = false;
+ break;
+
+ case wxSOCKET_MAX_EVENT:
+ wxFAIL_MSG( "unexpected notification" );
+ return;
+ }
- // If we are in the middle of a R/W operation, do not
- // propagate events to users.
- if (((req_evt == wxSOCKET_INPUT) && m_reading) ||
- ((req_evt == wxSOCKET_OUTPUT) && m_writing))
- {
- // fprintf(stderr, "%s: Swallowed evt %d\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
- return;
- }
+ // Schedule the event
- if (((m_neededreq & flag) == flag) && m_notify_state)
- {
- // fprintf(stderr, "%s: Evt %d delivered\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
- event.m_socket = this;
- event.m_skevt = req_evt;
- ProcessEvent(event);
- OldOnNotify(req_evt);
-
- if (m_cbk)
- m_cbk(*this, req_evt, m_cdata);
- }
+ 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;
+ }
- // fprintf(stderr, "%s: Exiting OnRequest (evt %d)\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
+ if (((m_eventmask & flag) == flag) && m_notify)
+ {
+ if (m_handler)
+ {
+ wxSocketEvent event(m_id);
+ event.m_event = notification;
+ event.m_clientData = m_clientData;
+ event.SetEventObject(this);
+
+ m_handler->AddPendingEvent(event);
+ }
+ }
}
-void wxSocketBase::OldOnNotify(wxSocketNotify WXUNUSED(evt))
+void wxSocketBase::Notify(bool notify)
{
+ m_notify = notify;
+ if (m_impl)
+ m_impl->Notify(notify);
}
-// --------------------------------------------------------------
-// wxSocketBase set event handler
-// --------------------------------------------------------------
+void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+{
+ m_eventmask = flags;
+}
-void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
+void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)
{
- SetNextHandler(&h_evt);
- m_id = id;
+ m_handler = &handler;
+ m_id = id;
}
-// --------------------------------------------------------------
-// wxSocketBase pushback
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Pushback buffer
+// --------------------------------------------------------------------------
-void wxSocketBase::Pushback(const char *buffer, wxUint32 size)
+void wxSocketBase::Pushback(const void *buffer, wxUint32 size)
{
- if (m_unread == NULL)
- m_unread = (char *)malloc(size);
- else {
- char *tmp;
+ if (!size) return;
- tmp = (char *)malloc(m_unrd_size + size);
- memcpy(tmp+size, m_unread, m_unrd_size);
- free(m_unread);
+ if (m_unread == NULL)
+ m_unread = malloc(size);
+ else
+ {
+ void *tmp;
- m_unread = tmp;
- }
+ tmp = malloc(m_unrd_size + size);
+ memcpy((char *)tmp + size, m_unread, m_unrd_size);
+ free(m_unread);
- m_unrd_size += size;
+ m_unread = tmp;
+ }
+
+ m_unrd_size += size;
- memcpy(m_unread, buffer, size);
+ memcpy(m_unread, buffer, size);
}
-wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)
+wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek)
{
- if (!m_unrd_size)
- return 0;
+ wxCHECK_MSG( buffer, 0, "NULL buffer" );
- if (size > (m_unrd_size-m_unrd_cur))
- size = m_unrd_size-m_unrd_cur;
+ if (!m_unrd_size)
+ return 0;
- memcpy(buffer, (m_unread+m_unrd_cur), size);
+ if (size > (m_unrd_size-m_unrd_cur))
+ size = m_unrd_size-m_unrd_cur;
- 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;
+ memcpy(buffer, (char *)m_unread + m_unrd_cur, size);
+
+ 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;
+ return size;
}
-// --------------------------------------------------------------
+
+// ==========================================================================
// wxSocketServer
-// --------------------------------------------------------------
+// ==========================================================================
-// --------------------------------------------------------------
-// wxSocketServer ctor and dtor
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Ctor
+// --------------------------------------------------------------------------
-wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
- wxSockFlags flags) :
- wxSocketBase(flags, SOCK_SERVER)
+wxSocketServer::wxSocketServer(const wxSockAddress& addr_man,
+ wxSocketFlags flags)
+ : wxSocketBase(flags, wxSOCKET_SERVER)
{
- // Create the socket
- m_socket = GSocket_new();
+ wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") );
- if (!m_socket)
- return;
+ m_impl = wxSocketImpl::Create(*this);
- // Setup the socket as server
- GSocket_SetLocal(m_socket, addr_man.GetAddress());
- if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
- {
- GSocket_destroy(m_socket);
- m_socket = NULL;
- return;
- }
+ if (!m_impl)
+ {
+ wxLogTrace( wxTRACE_Socket, _T("*** Failed to create m_impl") );
+ return;
+ }
+
+ // Setup the socket as server
+ m_impl->Notify(m_notify);
+ m_impl->SetLocal(addr_man.GetAddress());
- GSocket_SetTimeout(m_socket, m_timeout);
- GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
- GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
- wx_socket_callback, (char *)this);
+ if (GetFlags() & wxSOCKET_REUSEADDR) {
+ m_impl->SetReusable();
+ }
+ if (GetFlags() & wxSOCKET_BROADCAST) {
+ m_impl->SetBroadcast();
+ }
+ if (GetFlags() & wxSOCKET_NOBIND) {
+ m_impl->DontDoBind();
+ }
+
+ if (m_impl->CreateServer() != wxSOCKET_NOERROR)
+ {
+ delete m_impl;
+ m_impl = NULL;
+
+ wxLogTrace( wxTRACE_Socket, _T("*** CreateServer() failed") );
+ return;
+ }
+ wxLogTrace( wxTRACE_Socket, _T("wxSocketServer on fd %d"), m_impl->m_fd );
}
-// --------------------------------------------------------------
-// wxSocketServer Accept
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Accept
+// --------------------------------------------------------------------------
bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
{
- GSocket *child_socket;
+ if (!m_impl)
+ return false;
- if (!m_socket)
- 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);
- // GRG: If wait == FALSE, then the call should be nonblocking.
- // When we are finished, we put the socket to blocking mode
- // again.
+ if ( !sock.m_impl )
+ return false;
- if (!wait)
- GSocket_SetNonBlocking(m_socket, TRUE);
+ sock.m_type = wxSOCKET_BASE;
+ sock.m_connected = true;
- child_socket = GSocket_WaitConnection(m_socket);
+ return true;
+}
- if (!wait)
- GSocket_SetNonBlocking(m_socket, FALSE);
+wxSocketBase *wxSocketServer::Accept(bool wait)
+{
+ wxSocketBase* sock = new wxSocketBase();
- // GRG: this was not being handled!
- if (child_socket == NULL)
- return FALSE;
+ sock->SetFlags(m_flags);
- sock.m_type = SOCK_INTERNAL;
- sock.m_socket = child_socket;
- sock.m_connected = TRUE;
+ if (!AcceptWith(*sock, wait))
+ {
+ sock->Destroy();
+ sock = NULL;
+ }
- GSocket_SetTimeout(sock.m_socket, sock.m_timeout);
- GSocket_SetCallback(sock.m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
- GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
- wx_socket_callback, (char *)&sock);
+ return sock;
+}
- return TRUE;
+bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
+{
+ return DoWait(seconds, milliseconds, wxSOCKET_CONNECTION_FLAG);
}
-wxSocketBase *wxSocketServer::Accept(bool wait)
+bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen)
{
- wxSocketBase* sock = new wxSocketBase();
+ wxASSERT_MSG( m_impl, _T("Socket not initialised") );
- sock->SetFlags((wxSockFlags)m_flags);
+ SOCKOPTLEN_T lenreal;
+ if ( getsockopt(m_impl->m_fd, level, optname,
+ static_cast<char *>(optval), &lenreal) != 0 )
+ return false;
- if (!AcceptWith(*sock, wait))
- return NULL;
+ *optlen = lenreal;
- return sock;
+ return true;
}
-bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
+bool
+wxSocketBase::SetOption(int level, int optname, const void *optval, int optlen)
{
- return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
+ wxASSERT_MSG( m_impl, _T("Socket not initialised") );
+
+ return setsockopt(m_impl->m_fd, level, optname,
+ static_cast<const char *>(optval), optlen) == 0;
+}
+
+bool wxSocketBase::SetLocal(const wxIPV4address& local)
+{
+ GAddress* la = local.GetAddress();
+
+ // If the address is valid, save it for use when we call Connect
+ if (la && la->m_addr)
+ {
+ m_localAddress = local;
+
+ return true;
+ }
+
+ return false;
}
-// --------------------------------------------------------------
+// ==========================================================================
// wxSocketClient
-// --------------------------------------------------------------
+// ==========================================================================
-// --------------------------------------------------------------
-// wxSocketClient ctor and dtor
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------
-wxSocketClient::wxSocketClient(wxSockFlags _flags) :
- wxSocketBase(_flags, SOCK_CLIENT)
+wxSocketClient::wxSocketClient(wxSocketFlags flags)
+ : wxSocketBase(flags, wxSOCKET_CLIENT)
{
+ m_initialRecvBufferSize =
+ m_initialSendBufferSize = -1;
}
wxSocketClient::~wxSocketClient()
{
}
-// --------------------------------------------------------------
-// wxSocketClient Connect functions
-// --------------------------------------------------------------
-bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
+// --------------------------------------------------------------------------
+// Connect
+// --------------------------------------------------------------------------
+
+bool wxSocketClient::DoConnect(const wxSockAddress& addr_man,
+ const wxSockAddress* local,
+ bool wait)
{
- GSocketError err;
+ if (m_impl)
+ {
+ // Shutdown and destroy the socket
+ Close();
+ delete m_impl;
+ }
- if (IsConnected())
- Close();
+ m_impl = wxSocketImpl::Create(*this);
+ m_connected = false;
+ m_establishing = false;
- // This should never happen.
- if (m_socket)
- GSocket_destroy(m_socket);
+ if (!m_impl)
+ return false;
- // Initialize all socket stuff ...
- m_socket = GSocket_new();
- m_connected = FALSE;
- m_establishing = 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);
- if (!m_socket)
- return FALSE;
+ // 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();
+ }
- GSocket_SetTimeout(m_socket, m_timeout);
- GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
- GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
- wx_socket_callback, (char *)this);
+ // If no local address was passed and one has been set, use the one that was Set
+ if (!local && m_localAddress.GetAddress())
+ {
+ local = &m_localAddress;
+ }
- // GRG: If wait == FALSE, then the call should be nonblocking.
- // When we are finished, we put the socket to blocking mode
- // again.
+ // Bind to the local IP address and port, when provided
+ if (local)
+ {
+ GAddress* la = local->GetAddress();
- if (!wait)
- GSocket_SetNonBlocking(m_socket, TRUE);
+ if (la && la->m_addr)
+ m_impl->SetLocal(la);
+ }
- GSocket_SetPeer(m_socket, addr_man.GetAddress());
- err = GSocket_Connect(m_socket, GSOCK_STREAMED);
+ m_impl->SetInitialSocketBuffers(m_initialRecvBufferSize, m_initialSendBufferSize);
- if (!wait)
- GSocket_SetNonBlocking(m_socket, FALSE);
+ m_impl->SetPeer(addr_man.GetAddress());
+ const wxSocketError err = m_impl->CreateClient();
- if (err != GSOCK_NOERROR)
- {
- if (err == GSOCK_WOULDBLOCK)
- m_establishing = TRUE;
+ //this will register for callbacks - must be called after m_impl->m_fd was initialized
+ m_impl->Notify(m_notify);
- return FALSE;
- }
+ if (err != wxSOCKET_NOERROR)
+ {
+ if (err == wxSOCKET_WOULDBLOCK)
+ m_establishing = true;
+
+ return false;
+ }
+
+ m_connected = true;
+ return true;
+}
+
+bool wxSocketClient::Connect(const wxSockAddress& addr_man, bool wait)
+{
+ return DoConnect(addr_man, NULL, wait);
+}
- m_connected = TRUE;
- return TRUE;
+bool wxSocketClient::Connect(const wxSockAddress& addr_man,
+ const wxSockAddress& local,
+ bool wait)
+{
+ return DoConnect(addr_man, &local, wait);
}
bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
{
- if (m_connected) // Already connected
- return TRUE;
+ if ( m_connected )
+ {
+ // this happens if the initial attempt to connect succeeded without
+ // blocking
+ return true;
+ }
- if (!m_establishing || !m_socket) // No connection in progress
- return FALSE;
+ wxCHECK_MSG( m_establishing && m_impl, false,
+ "No connection establishment attempt in progress" );
- return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
+ // 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);
}
-// --------------------------------------------------------------
-// wxSocketEvent
-// --------------------------------------------------------------
+// ==========================================================================
+// wxDatagramSocket
+// ==========================================================================
-wxSocketEvent::wxSocketEvent(int id)
- : wxEvent(id)
+wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr,
+ wxSocketFlags flags )
+ : wxSocketBase( flags, wxSOCKET_DATAGRAM )
{
- wxEventType type = (wxEventType)wxEVT_SOCKET;
+ // Create the socket
+ m_impl = wxSocketImpl::Create(*this);
+
+ if (!m_impl)
+ return;
- SetEventType(type);
+ m_impl->Notify(m_notify);
+ // 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 )
+ {
+ delete m_impl;
+ m_impl = NULL;
+ return;
+ }
+
+ // Initialize all stuff
+ m_connected = false;
+ m_establishing = false;
}
-void wxSocketEvent::CopyObject(wxObject& obj_d) const
+wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
+ void* buf,
+ wxUint32 nBytes )
{
- wxSocketEvent *event = (wxSocketEvent *)&obj_d;
+ Read(buf, nBytes);
+ GetPeer(addr);
+ return (*this);
+}
- wxEvent::CopyObject(obj_d);
+wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr,
+ const void* buf,
+ wxUint32 nBytes )
+{
+ wxASSERT_MSG( m_impl, _T("Socket not initialised") );
- event->m_skevt = m_skevt;
- event->m_socket = m_socket;
+ m_impl->SetPeer(addr.GetAddress());
+ Write(buf, nBytes);
+ return (*this);
}
-// --------------------------------------------------------------------------
+// ==========================================================================
// wxSocketModule
-// --------------------------------------------------------------------------
-class WXDLLEXPORT wxSocketModule: public wxModule {
- DECLARE_DYNAMIC_CLASS(wxSocketModule)
- public:
- bool OnInit() {
- return GSocket_Init();
- }
- void OnExit() {
- GSocket_Cleanup();
- }
+// ==========================================================================
+
+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)
-#endif
- // wxUSE_SOCKETS
+#endif // wxUSE_SOCKETS
projects / wxWidgets.git / blobdiff