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_FWD_NET wxTCPServer;
  53 class WXDLLIMPEXP_FWD_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   // unhide the Execute overload from wxConnectionBase
  85   // FIXME-UTF8: change Execute() to DoExecute() to avoid having to do this;
  86   //             don't use c_str() below after removing ANSI build
  87   virtual bool Execute(const wxString& str)
  88     { return Execute(str.c_str(), -1, wxIPC_TEXT); }
  89
  90 protected:
  91   wxSocketBase       *m_sock;
  92   wxSocketStream     *m_sockstrm;
  93   wxDataInputStream  *m_codeci;
  94   wxDataOutputStream *m_codeco;
  95   wxString            m_topic;
  96
  97   friend class wxTCPServer;
  98   friend class wxTCPClient;
  99   friend class wxTCPEventHandler;
 100
 101   DECLARE_NO_COPY_CLASS(wxTCPConnection)
 102 };
 103
 104 class WXDLLIMPEXP_NET wxTCPServer: public wxServerBase
 105 {
 106 public:
 107   wxTCPConnection *topLevelConnection;
 108
 109   wxTCPServer();
 110   virtual ~wxTCPServer();
 111
 112   // Returns false on error (e.g. port number is already in use)
 113   virtual bool Create(const wxString& serverName);
 114
 115   // Callbacks to SERVER - override at will
 116   virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
 117
 118 protected:
 119   wxSocketServer *m_server;
 120
 121 #ifdef __UNIX_LIKE__
 122   // the name of the file associated to the Unix domain socket, may be empty
 123   wxString m_filename;
 124 #endif // __UNIX_LIKE__
 125
 126   DECLARE_NO_COPY_CLASS(wxTCPServer)
 127   DECLARE_DYNAMIC_CLASS(wxTCPServer)
 128 };
 129
 130 class WXDLLIMPEXP_NET wxTCPClient: public wxClientBase
 131 {
 132 public:
 133   wxTCPClient();
 134   virtual ~wxTCPClient();
 135
 136   virtual bool ValidHost(const wxString& host);
 137
 138   // Call this to make a connection. Returns NULL if cannot.
 139   virtual wxConnectionBase *MakeConnection(const wxString& host,
 140                                            const wxString& server,
 141                                            const wxString& topic);
 142
 143   // Callbacks to CLIENT - override at will
 144   virtual wxConnectionBase *OnMakeConnection();
 145
 146 private:
 147   DECLARE_DYNAMIC_CLASS(wxTCPClient)
 148 };
 149
 150 #endif // wxUSE_SOCKETS && wxUSE_IPC
 151
 152 #endif // _WX_SCKIPC_H