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