/////////////////////////////////////////////////////////////////////////////
-// Name: socket.h
+// Name: wx/socket.h
// Purpose: Socket handling classes
-// Author: Guilhem Lavaux
+// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia
// Modified by:
// Created: April 1997
// RCS-ID: $Id$
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifndef _WX_NETWORK_SOCKET_H
-#define _WX_NETWORK_SOCKET_H
-
-#ifdef __GNUG__
-#pragma interface "socket.h"
-#endif
+#ifndef _WX_SOCKET_H_
+#define _WX_SOCKET_H_
#include "wx/defs.h"
#if wxUSE_SOCKETS
// ---------------------------------------------------------------------------
-// wxSocket headers (generic)
+// wxSocket headers
// ---------------------------------------------------------------------------
-#ifdef WXPREC
- #include "wx/wxprec.h"
-#else
- #include "wx/event.h"
- #include "wx/string.h"
-#endif
+#include "wx/event.h"
#include "wx/sckaddr.h"
-#include "gsocket.h"
+#include "wx/list.h"
+
+class wxSocketImpl;
-class WXDLLEXPORT wxSocketEvent;
-class WXDLLEXPORT wxSocketBase : public wxEvtHandler
+// ------------------------------------------------------------------------
+// Types and constants
+// ------------------------------------------------------------------------
+
+// Types of different socket notifications or events.
+//
+// NB: the values here should be consecutive and start with 0 as they are
+// used to construct the wxSOCKET_XXX_FLAG bit mask values below
+enum wxSocketNotify
{
- DECLARE_CLASS(wxSocketBase)
-public:
+ wxSOCKET_INPUT,
+ wxSOCKET_OUTPUT,
+ wxSOCKET_CONNECTION,
+ wxSOCKET_LOST
+};
- enum { NONE=0, NOWAIT=1, WAITALL=2, SPEED=4 };
- typedef int wxSockFlags;
- // Type of request
+enum
+{
+ wxSOCKET_INPUT_FLAG = 1 << wxSOCKET_INPUT,
+ wxSOCKET_OUTPUT_FLAG = 1 << wxSOCKET_OUTPUT,
+ wxSOCKET_CONNECTION_FLAG = 1 << wxSOCKET_CONNECTION,
+ wxSOCKET_LOST_FLAG = 1 << wxSOCKET_LOST
+};
- enum wxSockType { SOCK_CLIENT, SOCK_SERVER, SOCK_INTERNAL, SOCK_UNINIT };
- typedef void (*wxSockCbk)(wxSocketBase& sock,GSocketEvent evt,char *cdata);
+// this is a combination of the bit masks defined above
+typedef int wxSocketEventFlags;
-protected:
- GSocket *m_socket; // wxSocket socket
- wxSockFlags m_flags; // wxSocket flags
- wxSockType m_type; // wxSocket type
- GSocketEventFlags m_neededreq; // Specify which requet signals we need
- size_t m_lcount; // Last IO request size
- unsigned long m_timeout; // IO timeout value
+enum wxSocketError
+{
+ wxSOCKET_NOERROR = 0,
+ wxSOCKET_INVOP,
+ wxSOCKET_IOERR,
+ wxSOCKET_INVADDR,
+ wxSOCKET_INVSOCK,
+ wxSOCKET_NOHOST,
+ wxSOCKET_INVPORT,
+ wxSOCKET_WOULDBLOCK,
+ wxSOCKET_TIMEDOUT,
+ wxSOCKET_MEMERR,
+ wxSOCKET_OPTERR
+};
- char *m_unread; // Pushback buffer
- size_t m_unrd_size; // Pushback buffer size
- size_t m_unrd_cur; // Pushback pointer
+// socket options/flags bit masks
+enum
+{
+ wxSOCKET_NONE = 0,
+ wxSOCKET_NOWAIT = 1,
+ wxSOCKET_WAITALL = 2,
+ wxSOCKET_BLOCK = 4,
+ wxSOCKET_REUSEADDR = 8,
+ wxSOCKET_BROADCAST = 16,
+ wxSOCKET_NOBIND = 32
+};
- wxSockCbk m_cbk; // C callback
- char *m_cdata; // C callback data
+typedef int wxSocketFlags;
- bool m_connected; // Connected ?
- bool m_notify_state; // Notify state
- int m_id; // Socket id (for event handler)
+// socket kind values (badly defined, don't use)
+enum wxSocketType
+{
+ wxSOCKET_UNINIT,
+ wxSOCKET_CLIENT,
+ wxSOCKET_SERVER,
+ wxSOCKET_BASE,
+ wxSOCKET_DATAGRAM
+};
- enum {
- DEFER_READ, DEFER_WRITE, NO_DEFER
- } m_defering; // Defering state
- char *m_defer_buffer; // Defering target buffer
- size_t m_defer_nbytes; // Defering buffer size
- wxList m_states; // Stack of states
-
-public:
- wxSocketBase();
- virtual ~wxSocketBase();
- virtual bool Close();
-
- // Base IO
- wxSocketBase& Peek(char* buffer, size_t nbytes);
- wxSocketBase& Read(char* buffer, size_t nbytes);
- wxSocketBase& Write(const char *buffer, size_t nbytes);
- wxSocketBase& Unread(const char *buffer, size_t nbytes);
- wxSocketBase& ReadMsg(char *buffer, size_t nbytes);
- wxSocketBase& WriteMsg(const char *buffer, size_t nbytes);
- void Discard();
-
- // Try not to use this two methods (they sould be protected)
- void CreatePushbackAfter(const char *buffer, size_t size);
- void CreatePushbackBefore(const char *buffer, size_t size);
-
- // Status
- inline bool Ok() const { return (m_socket != NULL); };
- inline bool Error() const
- { return (GSocket_GetError(m_socket) != GSOCK_NOERROR); };
- inline bool IsConnected() const { return m_connected; };
- inline bool IsDisconnected() const { return !IsConnected(); };
- inline bool IsNoWait() const { return ((m_flags & NOWAIT) != 0); };
- bool IsData() const;
- inline size_t LastCount() const { return m_lcount; }
- inline GSocketError LastError() const { return GSocket_GetError(m_socket); }
- inline wxSockType GetType() const { return m_type; }
-
- void SetFlags(wxSockFlags _flags);
- wxSockFlags GetFlags() const;
- inline void SetTimeout(unsigned long sec) { m_timeout = sec; }
-
- // seconds = -1 means infinite wait
- // seconds = 0 means no wait
- // seconds > 0 means specified wait
- bool Wait(long seconds = -1, long microseconds = 0);
- bool WaitForRead(long seconds = -1, long microseconds = 0);
- bool WaitForWrite(long seconds = -1, long microseconds = 0);
- bool WaitForLost(long seconds = -1, long microseconds = 0);
-
- // Save the current state of Socket
- void SaveState();
- void RestoreState();
-
- // Setup external callback
- wxSockCbk Callback(wxSockCbk cbk_);
- char *CallbackData(char *data);
-
- // Setup event handler
- void SetEventHandler(wxEvtHandler& evt_hdlr, int id = -1);
-
- // Method called when it happens something on the socket
- void SetNotify(GSocketEventFlags flags);
- virtual void OnRequest(GSocketEvent req_evt);
-
- // Public internal callback
- virtual void OldOnNotify(GSocketEvent WXUNUSED(evt));
-
- // Some info on the socket...
- virtual bool GetPeer(wxSockAddress& addr_man) const;
- virtual bool GetLocal(wxSockAddress& addr_man) const;
-
- // Install or uninstall callbacks
- void Notify(bool notify);
-
- // So you can know what the socket driver is looking for ...
- inline GSocketEventFlags NeededReq() const { return m_neededreq; }
-
- static GSocketEventFlags EventToNotify(GSocketEvent evt);
-
-protected:
- friend class wxSocketServer;
- friend class wxSocketHandler;
- friend class wxSocketInternal;
-
-#ifdef __SALFORDC__
+// event
+class WXDLLIMPEXP_FWD_NET wxSocketEvent;
+wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_NET, wxEVT_SOCKET, wxSocketEvent);
+
+// --------------------------------------------------------------------------
+// wxSocketBase
+// --------------------------------------------------------------------------
+
+class WXDLLIMPEXP_NET wxSocketBase : public wxObject
+{
public:
-#endif
-
- wxSocketBase(wxSockFlags flags, wxSockType type);
-
-#ifdef __SALFORDC__
-protected:
-#endif
-
- bool _Wait(long seconds, long microseconds, int type);
-
- int DeferRead(char *buffer, size_t nbytes);
- int DeferWrite(const char *buffer, size_t nbytes);
- void DoDefer(GSocketEvent evt);
-
- // Pushback library
- size_t GetPushback(char *buffer, size_t size, bool peek);
+ // Public interface
+ // ----------------
+
+ // ctors and dtors
+ wxSocketBase();
+ wxSocketBase(wxSocketFlags flags, wxSocketType type);
+ virtual ~wxSocketBase();
+ void Init();
+ bool Destroy();
+
+ // state
+ bool Ok() const { return IsOk(); }
+ bool IsOk() const { return m_impl != NULL; }
+ bool Error() const { return LastError() != wxSOCKET_NOERROR; }
+ bool IsClosed() const { return m_closed; }
+ bool IsConnected() const { return m_connected; }
+ bool IsData() { return WaitForRead(0, 0); }
+ bool IsDisconnected() const { return !IsConnected(); }
+ wxUint32 LastCount() const { return m_lcount; }
+ wxSocketError LastError() const;
+ void SaveState();
+ void RestoreState();
+
+ // addresses
+ virtual bool GetLocal(wxSockAddress& addr_man) const;
+ virtual bool GetPeer(wxSockAddress& addr_man) const;
+ virtual bool SetLocal(const wxIPV4address& local);
+
+ // base IO
+ virtual bool Close();
+ void ShutdownOutput();
+ wxSocketBase& Discard();
+ wxSocketBase& Peek(void* buffer, wxUint32 nbytes);
+ wxSocketBase& Read(void* buffer, wxUint32 nbytes);
+ wxSocketBase& ReadMsg(void *buffer, wxUint32 nbytes);
+ wxSocketBase& Unread(const void *buffer, wxUint32 nbytes);
+ wxSocketBase& Write(const void *buffer, wxUint32 nbytes);
+ wxSocketBase& WriteMsg(const void *buffer, wxUint32 nbytes);
+
+ // all Wait() functions wait until their condition is satisfied or the
+ // timeout expires; if seconds == -1 (default) then m_timeout value is used
+ //
+ // it is also possible to call InterruptWait() to cancel any current Wait()
+
+ // wait for anything at all to happen with this socket
+ bool Wait(long seconds = -1, long milliseconds = 0);
+
+ // wait until we can read from or write to the socket without blocking
+ // (notice that this does not mean that the operation will succeed but only
+ // that it will return immediately)
+ bool WaitForRead(long seconds = -1, long milliseconds = 0);
+ bool WaitForWrite(long seconds = -1, long milliseconds = 0);
+
+ // wait until the connection is terminated
+ bool WaitForLost(long seconds = -1, long milliseconds = 0);
+
+ void InterruptWait() { m_interrupt = true; }
+
+
+ wxSocketFlags GetFlags() const { return m_flags; }
+ void SetFlags(wxSocketFlags flags);
+ virtual void SetTimeout(long seconds);
+ long GetTimeout() const { return m_timeout; }
+
+ bool GetOption(int level, int optname, void *optval, int *optlen);
+ bool SetOption(int level, int optname, const void *optval, int optlen);
+ wxUint32 GetLastIOSize() const { return m_lcount; }
+
+ // event handling
+ void *GetClientData() const { return m_clientData; }
+ void SetClientData(void *data) { m_clientData = data; }
+ void SetEventHandler(wxEvtHandler& handler, int id = wxID_ANY);
+ void SetNotify(wxSocketEventFlags flags);
+ void Notify(bool notify);
+
+ // initialize/shutdown the sockets (done automatically so there is no need
+ // to call these functions usually)
+ //
+ // should always be called from the main thread only so one of the cases
+ // where they should indeed be called explicitly is when the first wxSocket
+ // object in the application is created in a different thread
+ static bool Initialize();
+ static void Shutdown();
+
+ // check if wxSocket had been already initialized
+ //
+ // notice that this function should be only called from the main thread as
+ // otherwise it is inherently unsafe because Initialize/Shutdown() may be
+ // called concurrently with it in the main thread
+ static bool IsInitialized();
+
+ // Implementation from now on
+ // --------------------------
+
+ // do not use, should be private (called from wxSocketImpl only)
+ void OnRequest(wxSocketNotify notify);
+
+ // do not use, not documented nor supported
+ bool IsNoWait() const { return ((m_flags & wxSOCKET_NOWAIT) != 0); }
+ wxSocketType GetType() const { return m_type; }
+
+private:
+ friend class wxSocketClient;
+ friend class wxSocketServer;
+ friend class wxDatagramSocket;
+
+ // low level IO
+ wxUint32 DoRead(void* buffer, wxUint32 nbytes);
+ wxUint32 DoWrite(const void *buffer, wxUint32 nbytes);
+
+ // wait until the given flags are set for this socket or the given timeout
+ // (or m_timeout) expires
+ //
+ // notice that wxSOCKET_LOST_FLAG is always taken into account and the
+ // function returns -1 if the connection was lost; otherwise it returns
+ // true if any of the events specified by flags argument happened or false
+ // if the timeout expired
+ int DoWait(long timeout, wxSocketEventFlags flags);
+
+ // a helper calling DoWait() using the same convention as the public
+ // WaitForXXX() functions use, i.e. use our timeout if seconds == -1 or the
+ // specified timeout otherwise
+ int DoWait(long seconds, long milliseconds, wxSocketEventFlags flags);
+
+ // another helper calling DoWait() using our m_timeout
+ int DoWaitWithTimeout(wxSocketEventFlags flags)
+ {
+ return DoWait(m_timeout*1000, flags);
+ }
+
+ // pushback buffer
+ void Pushback(const void *buffer, wxUint32 size);
+ wxUint32 GetPushback(void *buffer, wxUint32 size, bool peek);
+
+ // store the given error as the LastError()
+ void SetError(wxSocketError error);
+
+private:
+ // socket
+ wxSocketImpl *m_impl; // port-specific implementation
+ wxSocketType m_type; // wxSocket type
+
+ // state
+ wxSocketFlags m_flags; // wxSocket flags
+ bool m_connected; // connected?
+ bool m_establishing; // establishing connection?
+ bool m_reading; // busy reading?
+ bool m_writing; // busy writing?
+ bool m_closed; // was the other end closed?
+ wxUint32 m_lcount; // last IO transaction size
+ unsigned long m_timeout; // IO timeout value in seconds
+ // (TODO: remove, wxSocketImpl has it too)
+ wxList m_states; // stack of states (TODO: remove!)
+ bool m_interrupt; // interrupt ongoing wait operations?
+ bool m_beingDeleted; // marked for delayed deletion?
+ wxIPV4address m_localAddress; // bind to local address?
+
+ // pushback buffer
+ void *m_unread; // pushback buffer
+ wxUint32 m_unrd_size; // pushback buffer size
+ wxUint32 m_unrd_cur; // pushback pointer (index into buffer)
+
+ // events
+ int m_id; // socket id
+ wxEvtHandler *m_handler; // event handler
+ void *m_clientData; // client data for events
+ bool m_notify; // notify events to users?
+ wxSocketEventFlags m_eventmask; // which events to notify?
+ wxSocketEventFlags m_eventsgot; // collects events received in OnRequest()
+
+
+ friend class wxSocketReadGuard;
+ friend class wxSocketWriteGuard;
+
+ wxDECLARE_NO_COPY_CLASS(wxSocketBase);
+ DECLARE_CLASS(wxSocketBase)
};
-////////////////////////////////////////////////////////////////////////
-class WXDLLEXPORT wxSocketServer : public wxSocketBase
+// --------------------------------------------------------------------------
+// wxSocketServer
+// --------------------------------------------------------------------------
+
+class WXDLLIMPEXP_NET wxSocketServer : public wxSocketBase
{
- DECLARE_CLASS(wxSocketServer)
public:
+ wxSocketServer(const wxSockAddress& addr,
+ wxSocketFlags flags = wxSOCKET_NONE);
- // 'service' can be a name or a port-number
+ wxSocketBase* Accept(bool wait = true);
+ bool AcceptWith(wxSocketBase& socket, bool wait = true);
- wxSocketServer(wxSockAddress& addr_man, wxSockFlags flags = wxSocketBase::NONE);
+ bool WaitForAccept(long seconds = -1, long milliseconds = 0);
- wxSocketBase* Accept();
- bool AcceptWith(wxSocketBase& sock);
+ wxDECLARE_NO_COPY_CLASS(wxSocketServer);
+ DECLARE_CLASS(wxSocketServer)
};
-////////////////////////////////////////////////////////////////////////
-class WXDLLEXPORT wxSocketClient : public wxSocketBase
+// --------------------------------------------------------------------------
+// wxSocketClient
+// --------------------------------------------------------------------------
+
+class WXDLLIMPEXP_NET wxSocketClient : public wxSocketBase
{
- DECLARE_CLASS(wxSocketClient)
public:
+ wxSocketClient(wxSocketFlags flags = wxSOCKET_NONE);
+
+ virtual bool Connect(const wxSockAddress& addr, bool wait = true);
+ bool Connect(const wxSockAddress& addr,
+ const wxSockAddress& local,
+ bool wait = true);
+
+ bool WaitOnConnect(long seconds = -1, long milliseconds = 0);
+
+ // Sets initial socket buffer sizes using the SO_SNDBUF and SO_RCVBUF
+ // options before calling connect (either one can be -1 to leave it
+ // unchanged)
+ void SetInitialSocketBuffers(int recv, int send)
+ {
+ m_initialRecvBufferSize = recv;
+ m_initialSendBufferSize = send;
+ }
+
+private:
+ virtual bool DoConnect(const wxSockAddress& addr,
+ const wxSockAddress* local,
+ bool wait = true);
+
+ // buffer sizes, -1 if unset and defaults should be used
+ int m_initialRecvBufferSize;
+ int m_initialSendBufferSize;
+
+ wxDECLARE_NO_COPY_CLASS(wxSocketClient);
+ DECLARE_CLASS(wxSocketClient)
+};
- wxSocketClient(wxSockFlags flags = wxSocketBase::NONE);
- virtual ~wxSocketClient();
- virtual bool Connect(wxSockAddress& addr_man, bool wait = TRUE);
+// --------------------------------------------------------------------------
+// wxDatagramSocket
+// --------------------------------------------------------------------------
- bool WaitOnConnect(long seconds = -1, long microseconds = 0);
+// WARNING: still in alpha stage
- virtual void OnRequest(GSocketEvent flags);
+class WXDLLIMPEXP_NET wxDatagramSocket : public wxSocketBase
+{
+public:
+ wxDatagramSocket(const wxSockAddress& addr,
+ wxSocketFlags flags = wxSOCKET_NONE);
+
+ wxDatagramSocket& RecvFrom(wxSockAddress& addr,
+ void *buf,
+ wxUint32 nBytes);
+ wxDatagramSocket& SendTo(const wxSockAddress& addr,
+ const void* buf,
+ wxUint32 nBytes);
+
+ /* TODO:
+ bool Connect(wxSockAddress& addr);
+ */
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxDatagramSocket);
+ DECLARE_CLASS(wxDatagramSocket)
};
-class WXDLLEXPORT wxSocketEvent : public wxEvent {
- DECLARE_DYNAMIC_CLASS(wxSocketEvent)
+
+// --------------------------------------------------------------------------
+// wxSocketEvent
+// --------------------------------------------------------------------------
+
+class WXDLLIMPEXP_NET wxSocketEvent : public wxEvent
+{
public:
- wxSocketEvent(int id = 0);
+ wxSocketEvent(int id = 0)
+ : wxEvent(id, wxEVT_SOCKET)
+ {
+ }
- GSocketEvent SocketEvent() const { return m_skevt; }
- wxSocketBase *Socket() const { return m_socket; }
+ wxSocketNotify GetSocketEvent() const { return m_event; }
+ wxSocketBase *GetSocket() const
+ { return (wxSocketBase *) GetEventObject(); }
+ void *GetClientData() const { return m_clientData; }
- void CopyObject(wxObject& obj_d) const;
+ virtual wxEvent *Clone() const { return new wxSocketEvent(*this); }
+ virtual wxEventCategory GetEventCategory() const { return wxEVT_CATEGORY_SOCKET; }
public:
- GSocketEvent m_skevt;
- wxSocketBase *m_socket;
+ wxSocketNotify m_event;
+ void *m_clientData;
+
+ DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxSocketEvent)
};
+
typedef void (wxEvtHandler::*wxSocketEventFunction)(wxSocketEvent&);
-#define EVT_SOCKET(id, func) { wxEVT_SOCKET, id, -1, \
- (wxObjectEventFunction) (wxEventFunction) (wxSocketEventFunction) & func, \
- (wxObject *) NULL },
+#define wxSocketEventHandler(func) \
+ wxEVENT_HANDLER_CAST(wxSocketEventFunction, func)
+
+#define EVT_SOCKET(id, func) \
+ wx__DECLARE_EVT1(wxEVT_SOCKET, id, wxSocketEventHandler(func))
+
+#endif // wxUSE_SOCKETS
-#endif
- // wxUSE_SOCKETS
+#endif // _WX_SOCKET_H_
-#endif
- // _WX_NETWORK_SOCKET_H
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