include/wx/sckipc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sckipc.h
   3 // Purpose:     Interprocess communication implementation (wxSocket version)
   4 // Author:      Julian Smart
   5 // Modified by: Guilhem Lavaux (big rewrite) May 1997, 1998
   6 //              Guillermo Rodriguez (updated for wxSocket v2) Jan 2000
   7 //                                  (callbacks deprecated)    Mar 2000
   8 // Created:     1993
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Julian Smart 1993
  11 //              (c) Guilhem Lavaux 1997, 1998
  12 //              (c) 2000 Guillermo Rodriguez <guille@iies.es>
  13 // Licence:     wxWindows licence
  14 /////////////////////////////////////////////////////////////////////////////
  15
  16 #ifndef _WX_SCKIPC_H
  17 #define _WX_SCKIPC_H
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_SOCKETS && wxUSE_IPC
  22
  23 #include "wx/ipcbase.h"
  24 #include "wx/socket.h"
  25 #include "wx/sckstrm.h"
  26 #include "wx/datstrm.h"
  27
  28 /*
  29  * Mini-DDE implementation
  30
  31    Most transactions involve a topic name and an item name (choose these
  32    as befits your application).
  33
  34    A client can:
  35
  36    - ask the server to execute commands (data) associated with a topic
  37    - request data from server by topic and item
  38    - poke data into the server
  39    - ask the server to start an advice loop on topic/item
  40    - ask the server to stop an advice loop
  41
  42    A server can:
  43
  44    - respond to execute, request, poke and advice start/stop
  45    - send advise data to client
  46
  47    Note that this limits the server in the ways it can send data to the
  48    client, i.e. it can't send unsolicited information.
  49  *
  50  */
  51
  52 class WXDLLIMPEXP_NET wxTCPServer;
  53 class WXDLLIMPEXP_NET wxTCPClient;
  54
  55 class WXDLLIMPEXP_NET wxTCPConnection: public wxConnectionBase
  56 {
  57   DECLARE_DYNAMIC_CLASS(wxTCPConnection)
  58
  59 public:
  60   wxTCPConnection(wxChar *buffer, int size);
  61   wxTCPConnection();
  62   virtual ~wxTCPConnection();
  63
  64   // Calls that CLIENT can make
  65   virtual bool Execute(const wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
  66   virtual wxChar *Request(const wxString& item, int *size = NULL, wxIPCFormat format = wxIPC_TEXT);
  67   virtual bool Poke(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
  68   virtual bool StartAdvise(const wxString& item);
  69   virtual bool StopAdvise(const wxString& item);
  70
  71   // Calls that SERVER can make
  72   virtual bool Advise(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
  73
  74   // Calls that both can make
  75   virtual bool Disconnect(void);
  76
  77   // Callbacks to BOTH - override at will
  78   // Default behaviour is to delete connection and return true
  79   virtual bool OnDisconnect(void) { delete this; return true; }
  80
  81   // To enable the compressor (NOTE: not implemented!)
  82   void Compress(bool on);
  83
  84 protected:
  85   wxSocketBase       *m_sock;
  86   wxSocketStream     *m_sockstrm;
  87   wxDataInputStream  *m_codeci;
  88   wxDataOutputStream *m_codeco;
  89   wxString            m_topic;
  90
  91   friend class wxTCPServer;
  92   friend class wxTCPClient;
  93   friend class wxTCPEventHandler;
  94
  95 private:
  96   //
  97   // We're hiding an Execute method in ConnectionBase
  98   //
  99   virtual bool Execute(const wxString& str)
 100     { return Execute(str, -1, wxIPC_TEXT); }
 101
 102     DECLARE_NO_COPY_CLASS(wxTCPConnection)
 103 };
 104
 105 class WXDLLIMPEXP_NET wxTCPServer: public wxServerBase
 106 {
 107   DECLARE_DYNAMIC_CLASS(wxTCPServer)
 108
 109 public:
 110   wxTCPConnection *topLevelConnection;
 111
 112   wxTCPServer();
 113   virtual ~wxTCPServer();
 114
 115   // Returns false on error (e.g. port number is already in use)
 116   virtual bool Create(const wxString& serverName);
 117
 118   // Callbacks to SERVER - override at will
 119   virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
 120
 121 protected:
 122   wxSocketServer *m_server;
 123
 124 #ifdef __UNIX_LIKE__
 125   // the name of the file associated to the Unix domain socket, may be empty
 126   wxString m_filename;
 127 #endif // __UNIX_LIKE__
 128
 129     DECLARE_NO_COPY_CLASS(wxTCPServer)
 130 };
 131
 132 class WXDLLIMPEXP_NET wxTCPClient: public wxClientBase
 133 {
 134   DECLARE_DYNAMIC_CLASS(wxTCPClient)
 135
 136 public:
 137   wxTCPClient();
 138   virtual ~wxTCPClient();
 139
 140   virtual bool ValidHost(const wxString& host);
 141
 142   // Call this to make a connection. Returns NULL if cannot.
 143   virtual wxConnectionBase *MakeConnection(const wxString& host,
 144                                            const wxString& server,
 145                                            const wxString& topic);
 146
 147   // Callbacks to CLIENT - override at will
 148   virtual wxConnectionBase *OnMakeConnection();
 149 };
 150
 151 #endif // wxUSE_SOCKETS && wxUSE_IPC
 152
 153 #endif // _WX_SCKIPC_H