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 (generic)
  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 // 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   wxSOCKET_BUSY
  72 };
  73
  74 enum
  75 {
  76   wxSOCKET_NONE = 0,
  77   wxSOCKET_NOWAIT = 1,
  78   wxSOCKET_WAITALL = 2,
  79   wxSOCKET_BLOCK = 4
  80 };
  81
  82 // Type of socket
  83 enum wxSockType
  84 {
  85   SOCK_CLIENT,
  86   SOCK_SERVER,
  87   SOCK_DATAGRAM,
  88   SOCK_INTERNAL,
  89   SOCK_UNINIT
  90 };
  91
  92 typedef int wxSockFlags;
  93
  94 // ------------------------------------------------------------------------
  95 // wxSocket base
  96 // ------------------------------------------------------------------------
  97
  98 class WXDLLEXPORT wxTimer;
  99 class WXDLLEXPORT wxSocketEvent;
 100
 101 class WXDLLEXPORT wxSocketBase : public wxEvtHandler
 102 {
 103   DECLARE_CLASS(wxSocketBase)
 104 public:
 105
 106   enum
 107   {
 108     NONE = wxSOCKET_NONE,
 109     NOWAIT = wxSOCKET_NOWAIT,
 110     WAITALL = wxSOCKET_WAITALL,
 111     SPEED = wxSOCKET_BLOCK
 112   };
 113
 114   typedef void (*wxSockCbk)(wxSocketBase& sock, wxSocketNotify evt, char *cdata);
 115
 116 protected:
 117   GSocket      *m_socket;           // GSocket
 118   wxEvtHandler *m_evt_handler;      // event handler
 119   int           m_id;               // Socket id (for event handler)
 120
 121   // Attributes
 122   wxSockFlags   m_flags;            // wxSocket flags
 123   wxSockType    m_type;             // wxSocket type
 124   wxSocketEventFlags m_neededreq;   // Event mask
 125   bool          m_notify_state;     // Notify events to users?
 126
 127   // State
 128   bool          m_connected;        // Connected?
 129   bool          m_establishing;     // Establishing connection?
 130   bool          m_reading;          // Busy reading?
 131   bool          m_writing;          // Busy writing?
 132   bool          m_error;            // Did last IO call fail?
 133   wxUint32      m_lcount;           // Last IO transaction size
 134   unsigned long m_timeout;          // IO timeout value
 135   wxList        m_states;           // Stack of states
 136   bool          m_interrupt;        // Interrupt ongoing wait operations
 137
 138   // Pushback buffer
 139   char         *m_unread;           // Pushback buffer
 140   wxUint32      m_unrd_size;        // Pushback buffer size
 141   wxUint32      m_unrd_cur;         // Pushback pointer (index into buffer)
 142
 143   // Callback
 144   wxSockCbk     m_cbk;              // C callback
 145   char         *m_cdata;            // C callback data
 146
 147 public:
 148   wxSocketBase();
 149   virtual ~wxSocketBase();
 150   virtual bool Close();
 151
 152   // Base IO
 153   wxSocketBase& Peek(char* buffer, wxUint32 nbytes);
 154   wxSocketBase& Read(char* buffer, wxUint32 nbytes);
 155   wxSocketBase& Write(const char *buffer, wxUint32 nbytes);
 156   wxSocketBase& Unread(const char *buffer, wxUint32 nbytes);
 157   wxSocketBase& ReadMsg(char *buffer, wxUint32 nbytes);
 158   wxSocketBase& WriteMsg(const char *buffer, wxUint32 nbytes);
 159   wxSocketBase& Discard();
 160
 161   // Status
 162   inline bool Ok() const { return (m_socket != NULL); };
 163   inline bool Error() const { return m_error; };
 164   inline bool IsConnected() const { return m_connected; };
 165   inline bool IsDisconnected() const { return !IsConnected(); };
 166   inline bool IsNoWait() const { return ((m_flags & NOWAIT) != 0); };
 167   inline bool IsData() { return WaitForRead(0, 0); };
 168   inline wxUint32 LastCount() const { return m_lcount; }
 169   inline wxSocketError LastError() const { return (wxSocketError)GSocket_GetError(m_socket); }
 170   inline wxSockType GetType() const { return m_type; }
 171
 172   // Addresses
 173   virtual bool GetPeer(wxSockAddress& addr_man) const;
 174   virtual bool GetLocal(wxSockAddress& addr_man) const;
 175
 176   // Set attributes and flags
 177   void SetTimeout(long seconds);
 178   void SetFlags(wxSockFlags flags);
 179   inline wxSockFlags GetFlags() const { return m_flags; };
 180
 181   /* Wait functions
 182    *   seconds = -1 means default timeout (change with SetTimeout)
 183    *   seconds, milliseconds = 0 means no wait
 184    *   seconds, milliseconds > 0 means specified wait
 185    */
 186   bool Wait(long seconds = -1, long milliseconds = 0);
 187   bool WaitForRead(long seconds = -1, long milliseconds = 0);
 188   bool WaitForWrite(long seconds = -1, long milliseconds = 0);
 189   bool WaitForLost(long seconds = -1, long milliseconds = 0);
 190
 191   /* This function interrupts all ongoing wait operations for this
 192    * socket; use it only as an escape mechanism (for example to close
 193    * an app or to abort an operation). Reception of LOST events and
 194    * calls to Close() automatically call this.
 195    */
 196   void InterruptAllWaits() { m_interrupt = TRUE; };
 197
 198   // Save the current state of Socket
 199   void SaveState();
 200   void RestoreState();
 201
 202   // Setup event handler
 203   void SetEventHandler(wxEvtHandler& evt_hdlr, int id = -1);
 204
 205   // Tell wxSocket which events to notify
 206   void SetNotify(wxSocketEventFlags flags);
 207   void Notify(bool notify);
 208   static wxSocketEventFlags EventToNotify(wxSocketNotify evt);
 209   inline wxSocketEventFlags NeededReq() const { return m_neededreq; }
 210
 211   // External callback
 212   wxSockCbk Callback(wxSockCbk cbk_);
 213   char *CallbackData(char *data);
 214
 215   // Public internal callback
 216   virtual void OldOnNotify(wxSocketNotify WXUNUSED(evt));
 217
 218   // Do NOT use this function; it should be protected!
 219   void OnRequest(wxSocketNotify req_evt);
 220
 221 protected:
 222   friend class wxSocketServer;
 223   friend class wxSocketClient;
 224   friend class wxSocketHandler;
 225
 226 #ifdef __SALFORDC__
 227 public:
 228 #endif
 229
 230   wxSocketBase(wxSockFlags flags, wxSockType type);
 231
 232 #ifdef __SALFORDC__
 233 protected:
 234 #endif
 235
 236   // Low level IO
 237   wxUint32 _Read(char* buffer, wxUint32 nbytes);
 238   wxUint32 _Write(const char *buffer, wxUint32 nbytes);
 239   bool _Wait(long seconds, long milliseconds, wxSocketEventFlags flags);
 240
 241   // Pushbacks
 242   void Pushback(const char *buffer, wxUint32 size);
 243   wxUint32 GetPushback(char *buffer, wxUint32 size, bool peek);
 244 };
 245
 246 ////////////////////////////////////////////////////////////////////////
 247
 248 class WXDLLEXPORT wxSocketServer : public wxSocketBase
 249 {
 250   DECLARE_CLASS(wxSocketServer)
 251 public:
 252   // 'service' can be a name or a port-number
 253
 254   wxSocketServer(wxSockAddress& addr_man, wxSockFlags flags = wxSOCKET_NONE);
 255
 256   wxSocketBase* Accept(bool wait = TRUE);
 257   bool AcceptWith(wxSocketBase& sock, bool wait = TRUE);
 258
 259   bool WaitForAccept(long seconds = -1, long milliseconds = 0);
 260 };
 261
 262 ////////////////////////////////////////////////////////////////////////
 263
 264 class WXDLLEXPORT wxSocketClient : public wxSocketBase
 265 {
 266   DECLARE_CLASS(wxSocketClient)
 267 public:
 268
 269   wxSocketClient(wxSockFlags flags = wxSOCKET_NONE);
 270   virtual ~wxSocketClient();
 271
 272   virtual bool Connect(wxSockAddress& addr_man, bool wait = TRUE);
 273
 274   bool WaitOnConnect(long seconds = -1, long milliseconds = 0);
 275 };
 276
 277 ////////////////////////////////////////////////////////////////////////
 278
 279 class wxDatagramSocket : public wxSocketBase
 280 {
 281   DECLARE_CLASS(wxDatagramSocket)
 282
 283 public:
 284   wxDatagramSocket( wxSockAddress& addr, wxSockFlags flags = wxSOCKET_NONE );
 285
 286   wxDatagramSocket& RecvFrom( wxSockAddress& addr,
 287                               char* buf,
 288                               wxUint32 nBytes );
 289   wxDatagramSocket& SendTo( wxSockAddress& addr,
 290                             const char* buf,
 291                             wxUint32 nBytes );
 292 };
 293
 294 ////////////////////////////////////////////////////////////////////////
 295
 296 class WXDLLEXPORT wxSocketEvent : public wxEvent {
 297   DECLARE_DYNAMIC_CLASS(wxSocketEvent)
 298 public:
 299   wxSocketEvent(int id = 0);
 300
 301   wxSocketNotify SocketEvent() const { return m_skevt; }
 302   wxSocketBase *Socket() const { return m_socket; }
 303
 304   void CopyObject(wxObject& obj_d) const;
 305
 306 public:
 307   wxSocketNotify m_skevt;
 308   wxSocketBase *m_socket;
 309 };
 310
 311 typedef void (wxEvtHandler::*wxSocketEventFunction)(wxSocketEvent&);
 312
 313 #define EVT_SOCKET(id, func) { wxEVT_SOCKET, id, -1, \
 314   (wxObjectEventFunction) (wxEventFunction) (wxSocketEventFunction) & func, \
 315   (wxObject *) NULL  },
 316
 317 #endif
 318   // wxUSE_SOCKETS
 319
 320 #endif
 321   // _WX_NETWORK_SOCKET_H