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_NETWORK_SOCKET_H
  13 #define _WX_NETWORK_SOCKET_H
  14
  15 #ifdef __GNUG__
  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 #ifdef WXPREC
  28 #  include "wx/wxprec.h"
  29 #else
  30 #  include "wx/event.h"
  31 #  include "wx/string.h"
  32 #endif
  33
  34 #include "wx/sckaddr.h"
  35 #include "wx/gsocket.h"
  36
  37 // ------------------------------------------------------------------------
  38 // Types and constants
  39 // ------------------------------------------------------------------------
  40
  41 enum wxSocketNotify
  42 {
  43   wxSOCKET_INPUT = GSOCK_INPUT,
  44   wxSOCKET_OUTPUT = GSOCK_OUTPUT,
  45   wxSOCKET_CONNECTION = GSOCK_CONNECTION,
  46   wxSOCKET_LOST = GSOCK_LOST
  47 };
  48
  49 enum
  50 {
  51   wxSOCKET_INPUT_FLAG = GSOCK_INPUT_FLAG,
  52   wxSOCKET_OUTPUT_FLAG = GSOCK_OUTPUT_FLAG,
  53   wxSOCKET_CONNECTION_FLAG = GSOCK_CONNECTION_FLAG,
  54   wxSOCKET_LOST_FLAG = GSOCK_LOST_FLAG
  55 };
  56
  57 typedef GSocketEventFlags wxSocketEventFlags;
  58
  59 enum wxSocketError
  60 {
  61   wxSOCKET_NOERROR = GSOCK_NOERROR,
  62   wxSOCKET_INPOP = GSOCK_INVOP,
  63   wxSOCKET_IOERR = GSOCK_IOERR,
  64   wxSOCKET_INVADDR = GSOCK_INVADDR,
  65   wxSOCKET_INVSOCK = GSOCK_INVSOCK,
  66   wxSOCKET_NOHOST = GSOCK_NOHOST,
  67   wxSOCKET_INVPORT = GSOCK_INVPORT,
  68   wxSOCKET_WOULDBLOCK = GSOCK_WOULDBLOCK,
  69   wxSOCKET_TIMEDOUT = GSOCK_TIMEDOUT,
  70   wxSOCKET_MEMERR = GSOCK_MEMERR
  71 };
  72
  73 enum
  74 {
  75   wxSOCKET_NONE = 0,
  76   wxSOCKET_NOWAIT = 1,
  77   wxSOCKET_WAITALL = 2,
  78   wxSOCKET_BLOCK = 4
  79 };
  80
  81 // Type of socket
  82 enum wxSocketType
  83 {
  84   wxSOCKET_UNINIT,
  85   wxSOCKET_CLIENT,
  86   wxSOCKET_SERVER,
  87   wxSOCKET_BASE,
  88   wxSOCKET_DATAGRAM
  89 };
  90
  91 typedef int wxSocketFlags;
  92
  93
  94 // old names
  95
  96 #if WXWIN_COMPATIBILITY
  97
  98 typedef wxSocketType wxSockType;
  99 typedef wxSocketFlags wxSockFlags;
 100
 101 #endif // WXWIN_COMPATIBILITY
 102
 103 // --------------------------------------------------------------------------
 104 // wxSocketBase
 105 // --------------------------------------------------------------------------
 106
 107 class WXDLLEXPORT wxSocketBase : public wxObject
 108 {
 109   DECLARE_CLASS(wxSocketBase)
 110
 111 public:
 112
 113 #if WXWIN_COMPATIBILITY
 114   enum
 115   {
 116     NONE = wxSOCKET_NONE,
 117     NOWAIT = wxSOCKET_NOWAIT,
 118     WAITALL = wxSOCKET_WAITALL,
 119     SPEED = wxSOCKET_BLOCK
 120   };
 121
 122   enum
 123   {
 124     SOCK_UNINIT = wxSOCKET_UNINIT,
 125     SOCK_CLIENT = wxSOCKET_CLIENT,
 126     SOCK_SERVER = wxSOCKET_SERVER,
 127     SOCK_INTERNAL = wxSOCKET_BASE,
 128     SOCK_DATAGRAM = wxSOCKET_DATAGRAM
 129   };
 130 #endif // WXWIN_COMPATIBILITY
 131
 132   typedef void (*wxSockCbk)(wxSocketBase& sock, wxSocketNotify evt, char *cdata);
 133
 134 public:
 135
 136   // Public interface
 137   // ----------------
 138
 139   // ctors and dtors
 140   wxSocketBase();
 141   wxSocketBase(wxSocketFlags flags, wxSocketType type);
 142   virtual ~wxSocketBase();
 143   void Init();
 144   bool Destroy();
 145
 146   // state
 147   inline bool Ok() const { return (m_socket != NULL); };
 148   inline bool Error() const { return m_error; };
 149   inline bool IsConnected() const { return m_connected; };
 150   inline bool IsData() { return WaitForRead(0, 0); };
 151   inline bool IsDisconnected() const { return !IsConnected(); };
 152   inline wxUint32 LastCount() const { return m_lcount; }
 153   inline wxSocketError LastError() const { return (wxSocketError)GSocket_GetError(m_socket); }
 154   void SaveState();
 155   void RestoreState();
 156
 157   // addresses
 158   virtual bool GetLocal(wxSockAddress& addr_man) const;
 159   virtual bool GetPeer(wxSockAddress& addr_man) const;
 160
 161   // base IO
 162   virtual bool  Close();
 163   wxSocketBase& Discard();
 164   wxSocketBase& Peek(char* buffer, wxUint32 nbytes);
 165   wxSocketBase& Read(char* buffer, wxUint32 nbytes);
 166   wxSocketBase& ReadMsg(char *buffer, wxUint32 nbytes);
 167   wxSocketBase& Unread(const char *buffer, wxUint32 nbytes);
 168   wxSocketBase& Write(const char *buffer, wxUint32 nbytes);
 169   wxSocketBase& WriteMsg(const char *buffer, wxUint32 nbytes);
 170
 171   void InterruptAllWaits() { m_interrupt = TRUE; };
 172   bool Wait(long seconds = -1, long milliseconds = 0);
 173   bool WaitForRead(long seconds = -1, long milliseconds = 0);
 174   bool WaitForWrite(long seconds = -1, long milliseconds = 0);
 175   bool WaitForLost(long seconds = -1, long milliseconds = 0);
 176
 177   inline wxSocketFlags GetFlags() const { return m_flags; };
 178   void SetFlags(wxSocketFlags flags);
 179   void SetTimeout(long seconds);
 180
 181   // event handling
 182   void SetEventHandler(wxEvtHandler& handler, int id = -1);
 183   void SetNotify(wxSocketEventFlags flags);
 184   void Notify(bool notify);
 185
 186   // callbacks - deprecated, avoid if possible
 187   wxSockCbk Callback(wxSockCbk cbk_);
 188   char *CallbackData(char *data);
 189
 190
 191   // Implementation from now on
 192   // --------------------------
 193
 194   // do not use, this should be private
 195   void OnRequest(wxSocketNotify req_evt);
 196
 197   // do not use, not documented nor supported
 198   inline bool IsNoWait() const { return ((m_flags & wxSOCKET_NOWAIT) != 0); };
 199   inline wxSocketType GetType() const { return m_type; }
 200
 201 private:
 202   friend class wxSocketClient;
 203   friend class wxSocketServer;
 204   friend class wxDatagramSocket;
 205
 206   // low level IO
 207   wxUint32 _Read(char* buffer, wxUint32 nbytes);
 208   wxUint32 _Write(const char *buffer, wxUint32 nbytes);
 209   bool _Wait(long seconds, long milliseconds, wxSocketEventFlags flags);
 210
 211   // pushback buffer
 212   void Pushback(const char *buffer, wxUint32 size);
 213   wxUint32 GetPushback(char *buffer, wxUint32 size, bool peek);
 214
 215 private:
 216   GSocket      *m_socket;           // GSocket
 217   wxSocketType  m_type;             // wxSocket type
 218
 219   // state
 220   wxSocketFlags m_flags;            // wxSocket flags
 221   bool          m_connected;        // connected?
 222   bool          m_establishing;     // establishing connection?
 223   bool          m_reading;          // busy reading?
 224   bool          m_writing;          // busy writing?
 225   bool          m_error;            // did last IO call fail?
 226   wxUint32      m_lcount;           // last IO transaction size
 227   unsigned long m_timeout;          // IO timeout value
 228   wxList        m_states;           // stack of states
 229   bool          m_interrupt;        // interrupt ongoing wait operations?
 230   bool          m_beingDeleted;     // marked for delayed deletion?
 231
 232   // pushback buffer
 233   char         *m_unread;           // pushback buffer
 234   wxUint32      m_unrd_size;        // pushback buffer size
 235   wxUint32      m_unrd_cur;         // pushback pointer (index into buffer)
 236
 237   // events
 238   wxEvtHandler *m_handler;          // event handler
 239   int           m_id;               // socket id
 240   bool          m_notify_state;     // notify events to users?
 241   wxSocketEventFlags
 242                 m_neededreq;        // event mask
 243   wxSockCbk     m_cbk;              // callback
 244   char         *m_cdata;            // callback data
 245 };
 246
 247
 248 // --------------------------------------------------------------------------
 249 // wxSocketServer
 250 // --------------------------------------------------------------------------
 251
 252 class WXDLLEXPORT wxSocketServer : public wxSocketBase
 253 {
 254   DECLARE_CLASS(wxSocketServer)
 255
 256 public:
 257   wxSocketServer(wxSockAddress& addr, wxSocketFlags flags = wxSOCKET_NONE);
 258
 259   wxSocketBase* Accept(bool wait = TRUE);
 260   bool AcceptWith(wxSocketBase& socket, bool wait = TRUE);
 261
 262   bool WaitForAccept(long seconds = -1, long milliseconds = 0);
 263 };
 264
 265
 266 // --------------------------------------------------------------------------
 267 // wxSocketClient
 268 // --------------------------------------------------------------------------
 269
 270 class WXDLLEXPORT wxSocketClient : public wxSocketBase
 271 {
 272   DECLARE_CLASS(wxSocketClient)
 273
 274 public:
 275   wxSocketClient(wxSocketFlags flags = wxSOCKET_NONE);
 276   virtual ~wxSocketClient();
 277
 278   virtual bool Connect(wxSockAddress& addr, bool wait = TRUE);
 279
 280   bool WaitOnConnect(long seconds = -1, long milliseconds = 0);
 281 };
 282
 283
 284 // --------------------------------------------------------------------------
 285 // wxDatagramSocket
 286 // --------------------------------------------------------------------------
 287
 288 // WARNING: still in alpha stage
 289
 290 class wxDatagramSocket : public wxSocketBase
 291 {
 292   DECLARE_CLASS(wxDatagramSocket)
 293
 294 public:
 295   wxDatagramSocket(wxSockAddress& addr, wxSocketFlags flags = wxSOCKET_NONE);
 296
 297   wxDatagramSocket& RecvFrom( wxSockAddress& addr,
 298                               char* buf,
 299                               wxUint32 nBytes );
 300   wxDatagramSocket& SendTo( wxSockAddress& addr,
 301                             const char* buf,
 302                             wxUint32 nBytes );
 303 };
 304
 305
 306 // --------------------------------------------------------------------------
 307 // wxSocketEvent
 308 // --------------------------------------------------------------------------
 309
 310 class WXDLLEXPORT wxSocketEvent : public wxEvent
 311 {
 312   DECLARE_DYNAMIC_CLASS(wxSocketEvent)
 313
 314 public:
 315   wxSocketEvent(int id = 0);
 316
 317   wxSocketNotify SocketEvent() const { return m_event; }
 318   wxSocketBase *Socket() const       { return m_socket; }
 319
 320   void CopyObject(wxObject& object_dest) const;
 321
 322 public:
 323   wxSocketNotify  m_event;
 324   wxSocketBase   *m_socket;
 325 };
 326
 327
 328 typedef void (wxEvtHandler::*wxSocketEventFunction)(wxSocketEvent&);
 329
 330 #define EVT_SOCKET(id, func) { wxEVT_SOCKET, id, -1, \
 331   (wxObjectEventFunction) (wxEventFunction) (wxSocketEventFunction) & func, \
 332   (wxObject *) NULL  },
 333
 334
 335 #endif
 336   // wxUSE_SOCKETS
 337
 338 #endif
 339   // _WX_NETWORK_SOCKET_H