+#define wxTRACE_Socket wxT("wxSocket")
+
+// --------------------------------------------------------------------------
+// wxWin macros
+// --------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxSocketBase, wxObject)
+IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
+IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
+IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)
+IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+namespace
+{
+
+void SetTimeValFromMS(timeval& tv, unsigned long ms)
+{
+ tv.tv_sec = (ms / 1000);
+ tv.tv_usec = (ms % 1000) * 1000;
+}
+
+} // anonymous namespace
+
+// --------------------------------------------------------------------------
+// private classes
+// --------------------------------------------------------------------------
+
+class wxSocketState : public wxObject
+{
+public:
+ wxSocketFlags m_flags;
+ wxSocketEventFlags m_eventmask;
+ bool m_notify;
+ void *m_clientData;
+
+public:
+ wxSocketState() : wxObject() {}
+
+ wxDECLARE_NO_COPY_CLASS(wxSocketState);
+};
+
+// wxSocketWaitModeChanger: temporarily change the socket flags affecting its
+// wait mode
+class wxSocketWaitModeChanger
+{
+public:
+ // temporarily set the flags to include the flag value which may be either
+ // wxSOCKET_NOWAIT or wxSOCKET_WAITALL
+ wxSocketWaitModeChanger(wxSocketBase *socket, int flag)
+ : m_socket(socket),
+ m_oldflags(socket->GetFlags())
+
+ {
+ // We can be passed only wxSOCKET_WAITALL{_READ,_WRITE} or
+ // wxSOCKET_NOWAIT{_READ,_WRITE} normally.
+ wxASSERT_MSG( !(flag & wxSOCKET_WAITALL) || !(flag & wxSOCKET_NOWAIT),
+ "not a wait flag" );
+
+ // preserve wxSOCKET_BLOCK value when switching to wxSOCKET_WAITALL
+ // mode but not when switching to wxSOCKET_NOWAIT as the latter is
+ // incompatible with wxSOCKET_BLOCK
+ if ( flag != wxSOCKET_NOWAIT )
+ flag |= m_oldflags & wxSOCKET_BLOCK;
+
+ socket->SetFlags(flag);
+ }
+
+ ~wxSocketWaitModeChanger()
+ {
+ m_socket->SetFlags(m_oldflags);
+ }
+
+private:
+ wxSocketBase * const m_socket;
+ const int m_oldflags;
+
+ wxDECLARE_NO_COPY_CLASS(wxSocketWaitModeChanger);
+};
+
+// wxSocketRead/WriteGuard are instantiated before starting reading
+// from/writing to the socket
+class wxSocketReadGuard
+{
+public:
+ wxSocketReadGuard(wxSocketBase *socket)
+ : m_socket(socket)
+ {
+ wxASSERT_MSG( !m_socket->m_reading, "read reentrancy?" );
+
+ m_socket->m_reading = true;
+ }
+
+ ~wxSocketReadGuard()
+ {
+ m_socket->m_reading = false;
+
+ // connection could have been lost while reading, in this case calling
+ // ReenableEvents() would assert and is not necessary anyhow
+ wxSocketImpl * const impl = m_socket->m_impl;
+ if ( impl && impl->m_fd != INVALID_SOCKET )
+ impl->ReenableEvents(wxSOCKET_INPUT_FLAG);
+ }
+
+private:
+ wxSocketBase * const m_socket;
+
+ wxDECLARE_NO_COPY_CLASS(wxSocketReadGuard);
+};
+
+class wxSocketWriteGuard
+{
+public:
+ wxSocketWriteGuard(wxSocketBase *socket)
+ : m_socket(socket)
+ {
+ wxASSERT_MSG( !m_socket->m_writing, "write reentrancy?" );
+
+ m_socket->m_writing = true;
+ }
+
+ ~wxSocketWriteGuard()
+ {
+ m_socket->m_writing = false;
+
+ wxSocketImpl * const impl = m_socket->m_impl;
+ if ( impl && impl->m_fd != INVALID_SOCKET )
+ impl->ReenableEvents(wxSOCKET_OUTPUT_FLAG);
+ }
+
+private:
+ wxSocketBase * const m_socket;
+
+ wxDECLARE_NO_COPY_CLASS(wxSocketWriteGuard);
+};
+
+// ============================================================================
+// wxSocketManager
+// ============================================================================
+
+wxSocketManager *wxSocketManager::ms_manager = NULL;
+
+/* static */
+void wxSocketManager::Set(wxSocketManager *manager)
+{
+ wxASSERT_MSG( !ms_manager, "too late to set manager now" );
+
+ ms_manager = manager;
+}
+
+/* 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();
+}
+
+// ==========================================================================
+// wxSocketImpl
+// ==========================================================================
+
+wxSocketImpl::wxSocketImpl(wxSocketBase& wxsocket)
+ : m_wxsocket(&wxsocket)
+{
+ m_fd = INVALID_SOCKET;
+ m_error = wxSOCKET_NOERROR;
+ m_server = false;
+ m_stream = true;
+
+ SetTimeout(wxsocket.GetTimeout() * 1000);
+
+ m_establishing = false;
+ m_reusable = false;
+ m_broadcast = false;
+ m_dobind = true;
+ m_initialRecvBufferSize = -1;
+ m_initialSendBufferSize = -1;
+}
+
+wxSocketImpl::~wxSocketImpl()
+{
+ if ( m_fd != INVALID_SOCKET )
+ Shutdown();
+}
+
+bool wxSocketImpl::PreCreateCheck(const wxSockAddressImpl& addr)
+{
+ if ( m_fd != INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_INVSOCK;
+ return false;
+ }
+
+ if ( !addr.IsOk() )
+ {
+ m_error = wxSOCKET_INVADDR;
+ return false;
+ }
+
+ return true;
+}
+
+void wxSocketImpl::PostCreation()
+{
+ // FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option
+#ifdef SO_NOSIGPIPE
+ EnableSocketOption(SO_NOSIGPIPE);
+#endif
+
+ if ( m_reusable )
+ EnableSocketOption(SO_REUSEADDR);
+
+ if ( m_broadcast )
+ {
+ wxASSERT_MSG( !m_stream, "broadcasting is for datagram sockets only" );
+
+ EnableSocketOption(SO_BROADCAST);
+ }
+
+ if ( m_initialRecvBufferSize >= 0 )
+ SetSocketOption(SO_RCVBUF, m_initialRecvBufferSize);
+ if ( m_initialSendBufferSize >= 0 )
+ SetSocketOption(SO_SNDBUF, m_initialSendBufferSize);
+
+ // we always put our sockets in unblocked mode and handle blocking
+ // ourselves in DoRead/Write() if wxSOCKET_WAITALL is specified
+ UnblockAndRegisterWithEventLoop();
+}
+
+wxSocketError wxSocketImpl::UpdateLocalAddress()
+{
+ if ( !m_local.IsOk() )
+ {
+ // ensure that we have a valid object using the correct family: correct
+ // being the same one as our peer uses as we have no other way to
+ // determine it
+ m_local.Create(m_peer.GetFamily());
+ }
+
+ WX_SOCKLEN_T lenAddr = m_local.GetLen();
+ if ( getsockname(m_fd, m_local.GetWritableAddr(), &lenAddr) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
+ }
+
+ return wxSOCKET_NOERROR;
+}
+
+wxSocketError wxSocketImpl::CreateServer()
+{
+ if ( !PreCreateCheck(m_local) )
+ return m_error;
+
+ m_server = true;
+ m_stream = true;
+
+ // do create the socket
+ m_fd = socket(m_local.GetFamily(), SOCK_STREAM, 0);
+
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
+
+ PostCreation();
+
+ // and then bind to and listen on it
+ //
+ // FIXME: should we test for m_dobind here?
+ if ( bind(m_fd, m_local.GetAddr(), m_local.GetLen()) != 0 )
+ m_error = wxSOCKET_IOERR;
+
+ if ( IsOk() )
+ {
+ if ( listen(m_fd, 5) != 0 )
+ m_error = wxSOCKET_IOERR;
+ }
+
+ if ( !IsOk() )
+ {
+ Close();
+ return m_error;
+ }
+
+ // finally retrieve the address we effectively bound to
+ return UpdateLocalAddress();
+}
+
+wxSocketError wxSocketImpl::CreateClient(bool wait)
+{
+ if ( !PreCreateCheck(m_peer) )
+ return m_error;
+
+ m_fd = socket(m_peer.GetFamily(), SOCK_STREAM, 0);
+
+ if ( m_fd == INVALID_SOCKET )
+ {
+ m_error = wxSOCKET_IOERR;
+ return wxSOCKET_IOERR;
+ }
+
+ PostCreation();
+
+ // If a local address has been set, then bind to it before calling connect
+ if ( m_local.IsOk() )
+ {
+ if ( bind(m_fd, m_local.GetAddr(), m_local.GetLen()) != 0 )
+ {
+ Close();
+ m_error = wxSOCKET_IOERR;
+ return m_error;
projects / wxWidgets.git / blobdiff