include/wx/socket.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        socket.h
   3 // Purpose:     Socket handling classes
   4 // Authors:     Guilhem Lavaux, Guillermo Rodriguez Garcia
   5 // Modified by:
   6 // Created:     April 1997
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_SOCKET_H_
  13 #define _WX_SOCKET_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16   #pragma interface "socket.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_SOCKETS
  22
  23 // ---------------------------------------------------------------------------
  24 // wxSocket headers
  25 // ---------------------------------------------------------------------------
  26
  27 #include "wx/event.h"
  28 #include "wx/sckaddr.h"
  29 #include "wx/gsocket.h"
  30 #include "wx/list.h"
  31
  32 // ------------------------------------------------------------------------
  33 // Types and constants
  34 // ------------------------------------------------------------------------
  35
  36 enum wxSocketNotify
  37 {
  38   wxSOCKET_INPUT = GSOCK_INPUT,
  39   wxSOCKET_OUTPUT = GSOCK_OUTPUT,
  40   wxSOCKET_CONNECTION = GSOCK_CONNECTION,
  41   wxSOCKET_LOST = GSOCK_LOST
  42 };
  43
  44 enum
  45 {
  46   wxSOCKET_INPUT_FLAG = GSOCK_INPUT_FLAG,
  47   wxSOCKET_OUTPUT_FLAG = GSOCK_OUTPUT_FLAG,
  48   wxSOCKET_CONNECTION_FLAG = GSOCK_CONNECTION_FLAG,
  49   wxSOCKET_LOST_FLAG = GSOCK_LOST_FLAG
  50 };
  51
  52 typedef GSocketEventFlags wxSocketEventFlags;
  53
  54 enum wxSocketError
  55 {
  56   // from GSocket
  57   wxSOCKET_NOERROR = GSOCK_NOERROR,
  58   wxSOCKET_INVOP = GSOCK_INVOP,
  59   wxSOCKET_IOERR = GSOCK_IOERR,
  60   wxSOCKET_INVADDR = GSOCK_INVADDR,
  61   wxSOCKET_INVSOCK = GSOCK_INVSOCK,
  62   wxSOCKET_NOHOST = GSOCK_NOHOST,
  63   wxSOCKET_INVPORT = GSOCK_INVPORT,
  64   wxSOCKET_WOULDBLOCK = GSOCK_WOULDBLOCK,
  65   wxSOCKET_TIMEDOUT = GSOCK_TIMEDOUT,
  66   wxSOCKET_MEMERR = GSOCK_MEMERR,
  67
  68   // wxSocket-specific (not yet implemented)
  69   wxSOCKET_DUMMY
  70 };
  71
  72 enum
  73 {
  74   wxSOCKET_NONE = 0,
  75   wxSOCKET_NOWAIT = 1,
  76   wxSOCKET_WAITALL = 2,
  77   wxSOCKET_BLOCK = 4,
  78   wxSOCKET_REUSEADDR = 8
  79 };
  80
  81 enum wxSocketType
  82 {
  83   wxSOCKET_UNINIT,
  84   wxSOCKET_CLIENT,
  85   wxSOCKET_SERVER,
  86   wxSOCKET_BASE,
  87   wxSOCKET_DATAGRAM
  88 };
  89
  90 typedef int wxSocketFlags;
  91
  92
  93
  94 // --------------------------------------------------------------------------
  95 // wxSocketBase
  96 // --------------------------------------------------------------------------
  97
  98 class WXDLLIMPEXP_NET wxSocketBase : public wxObject
  99 {
 100   DECLARE_CLASS(wxSocketBase)
 101
 102 public:
 103
 104   // Public interface
 105   // ----------------
 106
 107   // ctors and dtors
 108   wxSocketBase();
 109   wxSocketBase(wxSocketFlags flags, wxSocketType type);
 110   virtual ~wxSocketBase();
 111   void Init();
 112   bool Destroy();
 113
 114   // state
 115   inline bool Ok() const { return (m_socket != NULL); };
 116   inline bool Error() const { return m_error; };
 117   inline bool IsConnected() const { return m_connected; };
 118   inline bool IsData() { return WaitForRead(0, 0); };
 119   inline bool IsDisconnected() const { return !IsConnected(); };
 120   inline wxUint32 LastCount() const { return m_lcount; }
 121   inline wxSocketError LastError() const { return (wxSocketError)m_socket->GetError(); }
 122   void SaveState();
 123   void RestoreState();
 124
 125   // addresses
 126   virtual bool GetLocal(wxSockAddress& addr_man) const;
 127   virtual bool GetPeer(wxSockAddress& addr_man) const;
 128
 129   // base IO
 130   virtual bool  Close();
 131   wxSocketBase& Discard();
 132   wxSocketBase& Peek(void* buffer, wxUint32 nbytes);
 133   wxSocketBase& Read(void* buffer, wxUint32 nbytes);
 134   wxSocketBase& ReadMsg(void *buffer, wxUint32 nbytes);
 135   wxSocketBase& Unread(const void *buffer, wxUint32 nbytes);
 136   wxSocketBase& Write(const void *buffer, wxUint32 nbytes);
 137   wxSocketBase& WriteMsg(const void *buffer, wxUint32 nbytes);
 138
 139   void InterruptWait() { m_interrupt = true; };
 140   bool Wait(long seconds = -1, long milliseconds = 0);
 141   bool WaitForRead(long seconds = -1, long milliseconds = 0);
 142   bool WaitForWrite(long seconds = -1, long milliseconds = 0);
 143   bool WaitForLost(long seconds = -1, long milliseconds = 0);
 144
 145   inline wxSocketFlags GetFlags() const { return m_flags; }
 146   void SetFlags(wxSocketFlags flags);
 147   void SetTimeout(long seconds);
 148
 149   bool GetOption(int level, int optname, void *optval, int *optlen);
 150   bool SetOption(int level, int optname, const void *optval, int optlen);
 151   inline wxUint32 GetLastIOSize() const { return m_lcount; };
 152
 153   // event handling
 154   void *GetClientData() const { return m_clientData; }
 155   void SetClientData(void *data) { m_clientData = data; }
 156   void SetEventHandler(wxEvtHandler& handler, int id = wxID_ANY);
 157   void SetNotify(wxSocketEventFlags flags);
 158   void Notify(bool notify);
 159
 160   // initialize/shutdown the sockets (usually called automatically)
 161   static bool IsInitialized();
 162   static bool Initialize();
 163   static void Shutdown();
 164
 165
 166   // Implementation from now on
 167   // --------------------------
 168
 169   // do not use, should be private (called from GSocket)
 170   void OnRequest(wxSocketNotify notify);
 171
 172   // do not use, not documented nor supported
 173   inline bool IsNoWait() const { return ((m_flags & wxSOCKET_NOWAIT) != 0); }
 174   inline wxSocketType GetType() const { return m_type; }
 175
 176 private:
 177   friend class wxSocketClient;
 178   friend class wxSocketServer;
 179   friend class wxDatagramSocket;
 180
 181   // low level IO
 182   wxUint32 _Read(void* buffer, wxUint32 nbytes);
 183   wxUint32 _Write(const void *buffer, wxUint32 nbytes);
 184   bool     _Wait(long seconds, long milliseconds, wxSocketEventFlags flags);
 185
 186   // pushback buffer
 187   void     Pushback(const void *buffer, wxUint32 size);
 188   wxUint32 GetPushback(void *buffer, wxUint32 size, bool peek);
 189
 190 private:
 191   // socket
 192   GSocket      *m_socket;           // GSocket
 193   wxSocketType  m_type;             // wxSocket type
 194
 195   // state
 196   wxSocketFlags m_flags;            // wxSocket flags
 197   bool          m_connected;        // connected?
 198   bool          m_establishing;     // establishing connection?
 199   bool          m_reading;          // busy reading?
 200   bool          m_writing;          // busy writing?
 201   bool          m_error;            // did last IO call fail?
 202   wxSocketError m_lasterror;        // last error (not cleared on success)
 203   wxUint32      m_lcount;           // last IO transaction size
 204   unsigned long m_timeout;          // IO timeout value
 205   wxList        m_states;           // stack of states
 206   bool          m_interrupt;        // interrupt ongoing wait operations?
 207   bool          m_beingDeleted;     // marked for delayed deletion?
 208
 209   // pushback buffer
 210   void         *m_unread;           // pushback buffer
 211   wxUint32      m_unrd_size;        // pushback buffer size
 212   wxUint32      m_unrd_cur;         // pushback pointer (index into buffer)
 213
 214   // events
 215   int           m_id;               // socket id
 216   wxEvtHandler *m_handler;          // event handler
 217   void         *m_clientData;       // client data for events
 218   bool          m_notify;           // notify events to users?
 219   wxSocketEventFlags  m_eventmask;  // which events to notify?
 220
 221   // the initialization count, GSocket is initialized if > 0
 222   static size_t m_countInit;
 223
 224     DECLARE_NO_COPY_CLASS(wxSocketBase)
 225 };
 226
 227
 228 // --------------------------------------------------------------------------
 229 // wxSocketServer
 230 // --------------------------------------------------------------------------
 231
 232 class WXDLLIMPEXP_NET wxSocketServer : public wxSocketBase
 233 {
 234   DECLARE_CLASS(wxSocketServer)
 235
 236 public:
 237   wxSocketServer(wxSockAddress& addr, wxSocketFlags flags = wxSOCKET_NONE);
 238
 239   wxSocketBase* Accept(bool wait = true);
 240   bool AcceptWith(wxSocketBase& socket, bool wait = true);
 241
 242   bool WaitForAccept(long seconds = -1, long milliseconds = 0);
 243
 244   DECLARE_NO_COPY_CLASS(wxSocketServer)
 245 };
 246
 247
 248 // --------------------------------------------------------------------------
 249 // wxSocketClient
 250 // --------------------------------------------------------------------------
 251
 252 class WXDLLIMPEXP_NET wxSocketClient : public wxSocketBase
 253 {
 254   DECLARE_CLASS(wxSocketClient)
 255
 256 public:
 257   wxSocketClient(wxSocketFlags flags = wxSOCKET_NONE);
 258   virtual ~wxSocketClient();
 259
 260   virtual bool Connect(wxSockAddress& addr, bool wait = true);
 261
 262   bool WaitOnConnect(long seconds = -1, long milliseconds = 0);
 263
 264   DECLARE_NO_COPY_CLASS(wxSocketClient)
 265 };
 266
 267
 268 // --------------------------------------------------------------------------
 269 // wxDatagramSocket
 270 // --------------------------------------------------------------------------
 271
 272 // WARNING: still in alpha stage
 273
 274 class WXDLLIMPEXP_NET wxDatagramSocket : public wxSocketBase
 275 {
 276   DECLARE_CLASS(wxDatagramSocket)
 277
 278 public:
 279   wxDatagramSocket(wxSockAddress& addr, wxSocketFlags flags = wxSOCKET_NONE);
 280
 281   wxDatagramSocket& RecvFrom( wxSockAddress& addr,
 282                               void* buf,
 283                               wxUint32 nBytes );
 284   wxDatagramSocket& SendTo( wxSockAddress& addr,
 285                             const void* buf,
 286                             wxUint32 nBytes );
 287
 288 /* TODO:
 289   bool Connect(wxSockAddress& addr);
 290 */
 291   DECLARE_NO_COPY_CLASS(wxDatagramSocket)
 292 };
 293
 294
 295 // --------------------------------------------------------------------------
 296 // wxSocketEvent
 297 // --------------------------------------------------------------------------
 298
 299 class WXDLLIMPEXP_NET wxSocketEvent : public wxEvent
 300 {
 301 public:
 302   wxSocketEvent(int id = 0)
 303       : wxEvent(id, wxEVT_SOCKET)
 304       {
 305       }
 306
 307   wxSocketNotify  GetSocketEvent() const { return m_event; }
 308   wxSocketBase   *GetSocket() const      { return (wxSocketBase *) GetEventObject(); }
 309   void           *GetClientData() const  { return m_clientData; }
 310
 311   virtual wxEvent *Clone() const { return new wxSocketEvent(*this); }
 312
 313 public:
 314   wxSocketNotify  m_event;
 315   void           *m_clientData;
 316
 317   DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxSocketEvent)
 318 };
 319
 320
 321 typedef void (wxEvtHandler::*wxSocketEventFunction)(wxSocketEvent&);
 322
 323 #define wxSocketEventHandler(func) \
 324     (wxObjectEventFunction)wxStaticCastEvent(wxSocketEventFunction, &func)
 325
 326 #define EVT_SOCKET(id, func) \
 327     wx__DECLARE_EVT1(wxEVT_SOCKET, id, wxSocketEventHandler(func))
 328
 329 #endif // wxUSE_SOCKETS
 330
 331 #endif // _WX_SOCKET_H_
 332