src/common/sckipc.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        sckipc.cpp
// Purpose:     Interprocess communication implementation (wxSocket version)
// Author:      Julian Smart, Guilhem Lavaux
// Modified by: Guilhem Lavaux (big rewrite) May 1997, 1998
// Created:     1993
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart 1993, Guilhem Lavaux 1997, 1998
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "sckipc.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if wxUSE_SOCKETS

#ifndef WX_PRECOMP
#endif

#include <stdlib.h>
#include <stdio.h>

#include "wx/socket.h"
#include "wx/sckipc.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxTCPServer, wxServerBase)
IMPLEMENT_DYNAMIC_CLASS(wxTCPClient, wxClientBase)
IMPLEMENT_DYNAMIC_CLASS(wxTCPConnection, wxConnectionBase)
#endif

// It seems to be already defined somewhere in the Xt includes.
#ifndef __XT__
// Message codes
enum {
  IPC_EXECUTE = 1,
  IPC_REQUEST,
  IPC_POKE,
  IPC_ADVISE_START,
  IPC_ADVISE_REQUEST,
  IPC_ADVISE,
  IPC_ADVISE_STOP,
  IPC_REQUEST_REPLY,
  IPC_FAIL,
  IPC_CONNECT,
  IPC_DISCONNECT
};
#endif

void Server_OnRequest(wxSocketServer& server,
		      wxSocketBase::wxRequestEvent evt,
		      char *cdata);
void Client_OnRequest(wxSocketBase& sock,
		      wxSocketBase::wxRequestEvent evt,
		      char *cdata);

// ---------------------------------------------------------------------------
// wxTCPClient
// ---------------------------------------------------------------------------

wxTCPClient::wxTCPClient (void)
  : wxClientBase()
{
}

wxTCPClient::~wxTCPClient (void)
{
}

bool wxTCPClient::ValidHost(const wxString& host)
{
  wxIPV4address addr;

  return addr.Hostname(host);
}

wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
                                               const wxString& server_name,
                                               const wxString& topic)
{
  wxIPV4address addr;
  wxSocketHandler *hsock = &wxSocketHandler::Master();
  wxSocketClient *client = hsock->CreateClient();
  wxSocketStream *stream = new wxSocketStream(*client);
  wxDataInputStream data_is(*stream);
  wxDataOutputStream data_os(*stream);

  client->SetNotify(wxSocketBase::REQ_READ | wxSocketBase::REQ_LOST);
  addr.Service(server_name);
  addr.Hostname(host);

  if (!client->Connect(addr)) {
    delete client;
    return NULL;
  }
  client->Notify(FALSE);

  // Send topic name, and enquire whether this has succeeded
  unsigned char msg;

  data_os.Write8(IPC_CONNECT);
  data_os.WriteString(topic);

  msg = data_is.Read8();

  // OK! Confirmation.
  if (msg == IPC_CONNECT) {
    wxTCPConnection *connection = (wxTCPConnection *)OnMakeConnection ();
    if (connection) {
      if (!connection->IsKindOf(CLASSINFO(wxTCPConnection))) {
        delete connection;
        return NULL;
      }
      connection->m_topic = topic;
      client->Callback(Client_OnRequest);
      client->CallbackData((char *)connection);
      client->Notify(TRUE);
      return connection;
    } else {
      delete client;
      return NULL;
    }
  } else {
    delete client;
    return NULL;
  }
  return NULL;
}

wxConnectionBase *wxTCPClient::OnMakeConnection()
{
  return new wxTCPConnection;
}

// ---------------------------------------------------------------------------
// wxTCPServer
// ---------------------------------------------------------------------------

wxTCPServer::wxTCPServer (void)
  : wxServerBase()
{
}

bool wxTCPServer::Create(const wxString& server_name)
{
  wxIPV4address addr;
  wxSocketHandler *hsock = &wxSocketHandler::Master();
  wxSocketServer *server;

  addr.Service(server_name);

  // Create a socket listening on specified port
  server = hsock->CreateServer(addr);
  server->Callback((wxSocketBase::wxSockCbk)Server_OnRequest);
  server->SetNotify(wxSocketBase::REQ_ACCEPT);

  server->CallbackData((char *)this);

  return TRUE;
}

wxTCPServer::~wxTCPServer(void)
{
}

wxConnectionBase *wxTCPServer::OnAcceptConnection( const wxString& WXUNUSED(topic) )
{
  return new wxTCPConnection();
}

// ---------------------------------------------------------------------------
// wxTCPConnection
// ---------------------------------------------------------------------------

wxTCPConnection::wxTCPConnection (void)
  : wxConnectionBase(),
    m_sock(NULL), m_sockstrm(NULL), m_codeci(NULL), m_codeco(NULL)
{
}

wxTCPConnection::wxTCPConnection(char *buffer, int size)
{
}

wxTCPConnection::~wxTCPConnection (void)
{
  wxDELETE(m_sock);
  wxDELETE(m_codeci);
  wxDELETE(m_codeco);
  wxDELETE(m_sockstrm);
}

void wxTCPConnection::Compress(bool WXUNUSED(on))
{
  // Use wxLZWStream
}

// Calls that CLIENT can make.
bool wxTCPConnection::Disconnect (void)
{
  // Send the the disconnect message to the peer.
  m_codeco->Write8(IPC_DISCONNECT);
  m_sock->Close();

  return TRUE;
}

bool wxTCPConnection::Execute (wxChar *data, int size, wxIPCFormat format)
{
  if (!m_sock->IsConnected())
    return FALSE;

  // Prepare EXECUTE message
  m_codeco->Write8(IPC_EXECUTE);
  m_codeco->Write8(format);
  if (size < 0)
    m_codeco->WriteString(data);
  else {
    m_codeco->Write32(size);
    m_codeco->Write(data, size);
  }

  return TRUE;
}

char *wxTCPConnection::Request (const wxString& item, int *size, wxIPCFormat format)
{
  if (!m_sock->IsConnected())
    return NULL;

  m_codeco->Write8(IPC_REQUEST);
  m_codeco->WriteString(item);
  m_codeco->Write8(format);

  // If Unpack doesn't initialize it.
  int ret;

  ret = m_codeci->Read8();
  if (ret == IPC_FAIL)
    return NULL;
  else {
    size_t s;
    char *data = NULL;

    s = m_codeci->Read32();
    data = new char[s];
    m_codeci->Read(data, s);

    if (size)
      *size = s;
    return data;
  }
}

bool wxTCPConnection::Poke (const wxString& item, wxChar *data, int size, wxIPCFormat format)
{
  if (!m_sock->IsConnected())
    return FALSE;

  m_codeco->Write8(IPC_POKE);
  m_codeco->WriteString(item);
  m_codeco->Write8(format);
  if (size < 0)
    m_codeco->WriteString(data);
  else {
    m_codeco->Write32(size);
    m_codeco->Write(data, size);
  }

  return TRUE;
}

bool wxTCPConnection::StartAdvise (const wxString& item)
{
  int ret;

  if (!m_sock->IsConnected())
    return FALSE;

  m_codeco->Write8(IPC_ADVISE_START);
  m_codeco->WriteString(item);

  ret = m_codeci->Read8();

  if (ret != IPC_FAIL)
    return TRUE;
  else
    return FALSE;
}

bool wxTCPConnection::StopAdvise (const wxString& item)
{
  int msg;

  if (!m_sock->IsConnected())
    return FALSE;

  m_codeco->Write8(IPC_ADVISE_STOP);
  m_codeco->WriteString(item);

  msg = m_codeci->Read8();

  if (msg != IPC_FAIL)
    return TRUE;
  else
    return FALSE;
}

// Calls that SERVER can make
bool wxTCPConnection::Advise (const wxString& item,
                              wxChar *data, int size, wxIPCFormat format)
{
  if (!m_sock->IsConnected())
    return FALSE;

  m_codeco->Write8(IPC_ADVISE);
  m_codeco->WriteString(item);
  m_codeco->Write8(format);
  if (size < 0)
    m_codeco->WriteString(data);
  else {
    m_codeco->Write32(size);
    m_codeco->Write(data, size);
  }

  return TRUE;
}

void Client_OnRequest(wxSocketBase& sock, wxSocketBase::wxRequestEvent evt,
		      char *cdata)
{
  int msg = 0;
  wxTCPConnection *connection = (wxTCPConnection *)cdata;
  wxDataInputStream *codeci;
  wxDataOutputStream *codeco;
  wxString topic_name = connection->m_topic;
  wxString item;

  // The socket handler signals us that we lost the connection: destroy all.
  if (evt == wxSocketBase::EVT_LOST) {
    sock.Close();
    connection->OnDisconnect();
    return;
  }

  // Receive message number.
  codeci = connection->m_codeci;
  codeco = connection->m_codeco;
  msg = codeci->Read8();

  switch (msg) {
  case IPC_EXECUTE: {
    char *data;
    size_t size;
    wxIPCFormat format;

    format = (wxIPCFormat)codeci->Read8();
    size = codeci->Read32();
    data = new char[size];
    codeci->Read(data, size);

    connection->OnExecute (topic_name, data, size, format);

    delete [] data;
    break;
  }
  case IPC_ADVISE: {
    char *data;
    size_t size;
    wxIPCFormat format;

    item = codeci->ReadString();
    format = (wxIPCFormat)codeci->Read8();
    size = codeci->Read32();
    data = new char[size];
    codeci->Read(data, size);

    connection->OnAdvise (topic_name, item, data, size, format);

    delete [] data;
    break;
  }
  case IPC_ADVISE_START: {
    item = codeci->ReadString();

    bool ok = connection->OnStartAdvise (topic_name, item);
    if (ok)
      codeco->Write8(IPC_ADVISE_START);
    else
      codeco->Write8(IPC_FAIL);

    break;
  }
  case IPC_ADVISE_STOP: {
    item = codeci->ReadString();

    bool ok = connection->OnStopAdvise (topic_name, item);
    if (ok)
      codeco->Write8(IPC_ADVISE_STOP);
    else
      codeco->Write8(IPC_FAIL);

    break;
  }
  case IPC_POKE: {
    wxIPCFormat format;
    size_t size;
    wxChar *data;

    item = codeci->ReadString();
    format = (wxIPCFormat)codeci->Read8();
    size = codeci->Read32();
    data = new wxChar[size];
    codeci->Read(data, size);

    connection->OnPoke (topic_name, item, data, size, format);

    delete [] data;

    break;
  }
  case IPC_REQUEST: {
    wxIPCFormat format;

    item = codeci->ReadString();
    format = (wxIPCFormat)codeci->Read8();

    int user_size = -1;
    char *user_data = connection->OnRequest (topic_name, item, &user_size, format);

    if (user_data) {
      codeco->Write8(IPC_REQUEST_REPLY);
      if (user_size != -1) {
        codeco->Write32(user_size);
        codeco->Write(user_data, user_size);
      } else
        codeco->WriteString(user_data);
    } else
      codeco->Write8(IPC_FAIL);

    break;
  }
  case IPC_DISCONNECT: {
    sock.Close();
    connection->OnDisconnect();
    break;
  }
  default:
    codeco->Write8(IPC_FAIL);
    break;
  }
}

void Server_OnRequest(wxSocketServer& server,
		      wxSocketBase::wxRequestEvent evt, char *cdata)
{
  wxTCPServer *ipcserv = (wxTCPServer *)cdata;
  wxSocketStream *stream;
  wxDataInputStream *codeci;
  wxDataOutputStream *codeco;

  if (evt != wxSocketBase::EVT_ACCEPT)
    return;

  /* Accept the connection, getting a new socket */
  wxSocketBase *sock = server.Accept();
  sock->Notify(FALSE);
  sock->SetNotify(wxSocketBase::REQ_READ | wxSocketBase::REQ_LOST);

  stream = new wxSocketStream(*sock);
  codeci = new wxDataInputStream(*stream);
  codeco = new wxDataOutputStream(*stream);

  if (!sock->Ok())
    return;

  int msg;
  msg = codeci->Read8();

  if (msg == IPC_CONNECT) {
    wxString topic_name;
    topic_name = codeci->ReadString();

    /* Register new socket with the notifier */
    wxTCPConnection *new_connection =
         (wxTCPConnection *)ipcserv->OnAcceptConnection (topic_name);
    if (new_connection) {
      if (!new_connection->IsKindOf(CLASSINFO(wxTCPConnection))) {
        delete new_connection;
        codeco->Write8(IPC_FAIL);
        return;
      }
      // Acknowledge success
      codeco->Write8(IPC_CONNECT);

      new_connection->m_topic = topic_name;
      new_connection->m_sockstrm = stream;
      new_connection->m_codeci = codeci;
      new_connection->m_codeco = codeco;
      sock->Callback(Client_OnRequest);
      sock->CallbackData((char *)new_connection);
      sock->Notify(TRUE);
    } else {
      // Send failure message
      codeco->Write8(IPC_FAIL);
    }
  }
}

#endif
  // wxUSE_SOCKETS
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: sckipc.cpp
	3	// Purpose: Interprocess communication implementation (wxSocket version)
	4	// Author: Julian Smart, Guilhem Lavaux
	5	// Modified by: Guilhem Lavaux (big rewrite) May 1997, 1998
	6	// Created: 1993
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart 1993, Guilhem Lavaux 1997, 1998
	9	// Licence: wxWindows license
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "sckipc.h"
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/wxprec.h"
	18
	19	#ifdef __BORLANDC__
	20	#pragma hdrstop
	21	#endif
	22
	23	#if wxUSE_SOCKETS
	24
	25	#ifndef WX_PRECOMP
	26	#endif
	27
	28	#include <stdlib.h>
	29	#include <stdio.h>
	30
	31	#include "wx/socket.h"
	32	#include "wx/sckipc.h"
	33
	34	#ifdef __BORLANDC__
	35	#pragma hdrstop
	36	#endif
	37
	38	#if !USE_SHARED_LIBRARY
	39	IMPLEMENT_DYNAMIC_CLASS(wxTCPServer, wxServerBase)
	40	IMPLEMENT_DYNAMIC_CLASS(wxTCPClient, wxClientBase)
	41	IMPLEMENT_DYNAMIC_CLASS(wxTCPConnection, wxConnectionBase)
	42	#endif
	43
	44	// It seems to be already defined somewhere in the Xt includes.
	45	#ifndef __XT__
	46	// Message codes
	47	enum {
	48	IPC_EXECUTE = 1,
	49	IPC_REQUEST,
	50	IPC_POKE,
	51	IPC_ADVISE_START,
	52	IPC_ADVISE_REQUEST,
	53	IPC_ADVISE,
	54	IPC_ADVISE_STOP,
	55	IPC_REQUEST_REPLY,
	56	IPC_FAIL,
	57	IPC_CONNECT,
	58	IPC_DISCONNECT
	59	};
	60	#endif
	61
	62	void Server_OnRequest(wxSocketServer& server,
	63	wxSocketBase::wxRequestEvent evt,
	64	char *cdata);
	65	void Client_OnRequest(wxSocketBase& sock,
	66	wxSocketBase::wxRequestEvent evt,
	67	char *cdata);
	68
	69	// ---------------------------------------------------------------------------
	70	// wxTCPClient
	71	// ---------------------------------------------------------------------------
	72
	73	wxTCPClient::wxTCPClient (void)
	74	: wxClientBase()
	75	{
	76	}
	77
	78	wxTCPClient::~wxTCPClient (void)
	79	{
	80	}
	81
	82	bool wxTCPClient::ValidHost(const wxString& host)
	83	{
	84	wxIPV4address addr;
	85
	86	return addr.Hostname(host);
	87	}
	88
	89	wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
	90	const wxString& server_name,
	91	const wxString& topic)
	92	{
	93	wxIPV4address addr;
	94	wxSocketHandler *hsock = &wxSocketHandler::Master();
	95	wxSocketClient *client = hsock->CreateClient();
	96	wxSocketStream stream = new wxSocketStream(client);
	97	wxDataInputStream data_is(*stream);
	98	wxDataOutputStream data_os(*stream);
	99
	100	client->SetNotify(wxSocketBase::REQ_READ \| wxSocketBase::REQ_LOST);
	101	addr.Service(server_name);
	102	addr.Hostname(host);
	103
	104	if (!client->Connect(addr)) {
	105	delete client;
	106	return NULL;
	107	}
	108	client->Notify(FALSE);
	109
	110	// Send topic name, and enquire whether this has succeeded
	111	unsigned char msg;
	112
	113	data_os.Write8(IPC_CONNECT);
	114	data_os.WriteString(topic);
	115
	116	msg = data_is.Read8();
	117
	118	// OK! Confirmation.
	119	if (msg == IPC_CONNECT) {
	120	wxTCPConnection connection = (wxTCPConnection )OnMakeConnection ();
	121	if (connection) {
	122	if (!connection->IsKindOf(CLASSINFO(wxTCPConnection))) {
	123	delete connection;
	124	return NULL;
	125	}
	126	connection->m_topic = topic;
	127	client->Callback(Client_OnRequest);
	128	client->CallbackData((char *)connection);
	129	client->Notify(TRUE);
	130	return connection;
	131	} else {
	132	delete client;
	133	return NULL;
	134	}
	135	} else {
	136	delete client;
	137	return NULL;
	138	}
	139	return NULL;
	140	}
	141
	142	wxConnectionBase *wxTCPClient::OnMakeConnection()
	143	{
	144	return new wxTCPConnection;
	145	}
	146
	147	// ---------------------------------------------------------------------------
	148	// wxTCPServer
	149	// ---------------------------------------------------------------------------
	150
	151	wxTCPServer::wxTCPServer (void)
	152	: wxServerBase()
	153	{
	154	}
	155
	156	bool wxTCPServer::Create(const wxString& server_name)
	157	{
	158	wxIPV4address addr;
	159	wxSocketHandler *hsock = &wxSocketHandler::Master();
	160	wxSocketServer *server;
	161
	162	addr.Service(server_name);
	163
	164	// Create a socket listening on specified port
	165	server = hsock->CreateServer(addr);
	166	server->Callback((wxSocketBase::wxSockCbk)Server_OnRequest);
	167	server->SetNotify(wxSocketBase::REQ_ACCEPT);
	168
	169	server->CallbackData((char *)this);
	170
	171	return TRUE;
	172	}
	173
	174	wxTCPServer::~wxTCPServer(void)
	175	{
	176	}
	177
	178	wxConnectionBase *wxTCPServer::OnAcceptConnection( const wxString& WXUNUSED(topic) )
	179	{
	180	return new wxTCPConnection();
	181	}
	182
	183	// ---------------------------------------------------------------------------
	184	// wxTCPConnection
	185	// ---------------------------------------------------------------------------
	186
	187	wxTCPConnection::wxTCPConnection (void)
	188	: wxConnectionBase(),
	189	m_sock(NULL), m_sockstrm(NULL), m_codeci(NULL), m_codeco(NULL)
	190	{
	191	}
	192
	193	wxTCPConnection::wxTCPConnection(char *buffer, int size)
	194	{
	195	}
	196
	197	wxTCPConnection::~wxTCPConnection (void)
	198	{
	199	wxDELETE(m_sock);
	200	wxDELETE(m_codeci);
	201	wxDELETE(m_codeco);
	202	wxDELETE(m_sockstrm);
	203	}
	204
	205	void wxTCPConnection::Compress(bool WXUNUSED(on))
	206	{
	207	// Use wxLZWStream
	208	}
	209
	210	// Calls that CLIENT can make.
	211	bool wxTCPConnection::Disconnect (void)
	212	{
	213	// Send the the disconnect message to the peer.
	214	m_codeco->Write8(IPC_DISCONNECT);
	215	m_sock->Close();
	216
	217	return TRUE;
	218	}
	219
	220	bool wxTCPConnection::Execute (wxChar *data, int size, wxIPCFormat format)
	221	{
	222	if (!m_sock->IsConnected())
	223	return FALSE;
	224
	225	// Prepare EXECUTE message
	226	m_codeco->Write8(IPC_EXECUTE);
	227	m_codeco->Write8(format);
	228	if (size < 0)
	229	m_codeco->WriteString(data);
	230	else {
	231	m_codeco->Write32(size);
	232	m_codeco->Write(data, size);
	233	}
	234
	235	return TRUE;
	236	}
	237
	238	char wxTCPConnection::Request (const wxString& item, int size, wxIPCFormat format)
	239	{
	240	if (!m_sock->IsConnected())
	241	return NULL;
	242
	243	m_codeco->Write8(IPC_REQUEST);
	244	m_codeco->WriteString(item);
	245	m_codeco->Write8(format);
	246
	247	// If Unpack doesn't initialize it.
	248	int ret;
	249
	250	ret = m_codeci->Read8();
	251	if (ret == IPC_FAIL)
	252	return NULL;
	253	else {
	254	size_t s;
	255	char *data = NULL;
	256
	257	s = m_codeci->Read32();
	258	data = new char[s];
	259	m_codeci->Read(data, s);
	260
	261	if (size)
	262	*size = s;
	263	return data;
	264	}
	265	}
	266
	267	bool wxTCPConnection::Poke (const wxString& item, wxChar *data, int size, wxIPCFormat format)
	268	{
	269	if (!m_sock->IsConnected())
	270	return FALSE;
	271
	272	m_codeco->Write8(IPC_POKE);
	273	m_codeco->WriteString(item);
	274	m_codeco->Write8(format);
	275	if (size < 0)
	276	m_codeco->WriteString(data);
	277	else {
	278	m_codeco->Write32(size);
	279	m_codeco->Write(data, size);
	280	}
	281
	282	return TRUE;
	283	}
	284
	285	bool wxTCPConnection::StartAdvise (const wxString& item)
	286	{
	287	int ret;
	288
	289	if (!m_sock->IsConnected())
	290	return FALSE;
	291
	292	m_codeco->Write8(IPC_ADVISE_START);
	293	m_codeco->WriteString(item);
	294
	295	ret = m_codeci->Read8();
	296
	297	if (ret != IPC_FAIL)
	298	return TRUE;
	299	else
	300	return FALSE;
	301	}
	302
	303	bool wxTCPConnection::StopAdvise (const wxString& item)
	304	{
	305	int msg;
	306
	307	if (!m_sock->IsConnected())
	308	return FALSE;
	309
	310	m_codeco->Write8(IPC_ADVISE_STOP);
	311	m_codeco->WriteString(item);
	312
	313	msg = m_codeci->Read8();
	314
	315	if (msg != IPC_FAIL)
	316	return TRUE;
	317	else
	318	return FALSE;
	319	}
	320
	321	// Calls that SERVER can make
	322	bool wxTCPConnection::Advise (const wxString& item,
	323	wxChar *data, int size, wxIPCFormat format)
	324	{
	325	if (!m_sock->IsConnected())
	326	return FALSE;
	327
	328	m_codeco->Write8(IPC_ADVISE);
	329	m_codeco->WriteString(item);
	330	m_codeco->Write8(format);
	331	if (size < 0)
	332	m_codeco->WriteString(data);
	333	else {
	334	m_codeco->Write32(size);
	335	m_codeco->Write(data, size);
	336	}
	337
	338	return TRUE;
	339	}
	340
	341	void Client_OnRequest(wxSocketBase& sock, wxSocketBase::wxRequestEvent evt,
	342	char *cdata)
	343	{
	344	int msg = 0;
	345	wxTCPConnection connection = (wxTCPConnection )cdata;
	346	wxDataInputStream *codeci;
	347	wxDataOutputStream *codeco;
	348	wxString topic_name = connection->m_topic;
	349	wxString item;
	350
	351	// The socket handler signals us that we lost the connection: destroy all.
	352	if (evt == wxSocketBase::EVT_LOST) {
	353	sock.Close();
	354	connection->OnDisconnect();
	355	return;
	356	}
	357
	358	// Receive message number.
	359	codeci = connection->m_codeci;
	360	codeco = connection->m_codeco;
	361	msg = codeci->Read8();
	362
	363	switch (msg) {
	364	case IPC_EXECUTE: {
	365	char *data;
	366	size_t size;
	367	wxIPCFormat format;
	368
	369	format = (wxIPCFormat)codeci->Read8();
	370	size = codeci->Read32();
	371	data = new char[size];
	372	codeci->Read(data, size);
	373
	374	connection->OnExecute (topic_name, data, size, format);
	375
	376	delete [] data;
	377	break;
	378	}
	379	case IPC_ADVISE: {
	380	char *data;
	381	size_t size;
	382	wxIPCFormat format;
	383
	384	item = codeci->ReadString();
	385	format = (wxIPCFormat)codeci->Read8();
	386	size = codeci->Read32();
	387	data = new char[size];
	388	codeci->Read(data, size);
	389
	390	connection->OnAdvise (topic_name, item, data, size, format);
	391
	392	delete [] data;
	393	break;
	394	}
	395	case IPC_ADVISE_START: {
	396	item = codeci->ReadString();
	397
	398	bool ok = connection->OnStartAdvise (topic_name, item);
	399	if (ok)
	400	codeco->Write8(IPC_ADVISE_START);
	401	else
	402	codeco->Write8(IPC_FAIL);
	403
	404	break;
	405	}
	406	case IPC_ADVISE_STOP: {
	407	item = codeci->ReadString();
	408
	409	bool ok = connection->OnStopAdvise (topic_name, item);
	410	if (ok)
	411	codeco->Write8(IPC_ADVISE_STOP);
	412	else
	413	codeco->Write8(IPC_FAIL);
	414
	415	break;
	416	}
	417	case IPC_POKE: {
	418	wxIPCFormat format;
	419	size_t size;
	420	wxChar *data;
	421
	422	item = codeci->ReadString();
	423	format = (wxIPCFormat)codeci->Read8();
	424	size = codeci->Read32();
	425	data = new wxChar[size];
	426	codeci->Read(data, size);
	427
	428	connection->OnPoke (topic_name, item, data, size, format);
	429
	430	delete [] data;
	431
	432	break;
	433	}
	434	case IPC_REQUEST: {
	435	wxIPCFormat format;
	436
	437	item = codeci->ReadString();
	438	format = (wxIPCFormat)codeci->Read8();
	439
	440	int user_size = -1;
	441	char *user_data = connection->OnRequest (topic_name, item, &user_size, format);
	442
	443	if (user_data) {
	444	codeco->Write8(IPC_REQUEST_REPLY);
	445	if (user_size != -1) {
	446	codeco->Write32(user_size);
	447	codeco->Write(user_data, user_size);
	448	} else
	449	codeco->WriteString(user_data);
	450	} else
	451	codeco->Write8(IPC_FAIL);
	452
	453	break;
	454	}
	455	case IPC_DISCONNECT: {
	456	sock.Close();
	457	connection->OnDisconnect();
	458	break;
	459	}
	460	default:
	461	codeco->Write8(IPC_FAIL);
	462	break;
	463	}
	464	}
	465
	466	void Server_OnRequest(wxSocketServer& server,
	467	wxSocketBase::wxRequestEvent evt, char *cdata)
	468	{
	469	wxTCPServer ipcserv = (wxTCPServer )cdata;
	470	wxSocketStream *stream;
	471	wxDataInputStream *codeci;
	472	wxDataOutputStream *codeco;
	473
	474	if (evt != wxSocketBase::EVT_ACCEPT)
	475	return;
	476
	477	/* Accept the connection, getting a new socket */
	478	wxSocketBase *sock = server.Accept();
	479	sock->Notify(FALSE);
	480	sock->SetNotify(wxSocketBase::REQ_READ \| wxSocketBase::REQ_LOST);
	481
	482	stream = new wxSocketStream(*sock);
	483	codeci = new wxDataInputStream(*stream);
	484	codeco = new wxDataOutputStream(*stream);
	485
	486	if (!sock->Ok())
	487	return;
	488
	489	int msg;
	490	msg = codeci->Read8();
	491
	492	if (msg == IPC_CONNECT) {
	493	wxString topic_name;
	494	topic_name = codeci->ReadString();
	495
	496	/* Register new socket with the notifier */
	497	wxTCPConnection *new_connection =
	498	(wxTCPConnection *)ipcserv->OnAcceptConnection (topic_name);
	499	if (new_connection) {
	500	if (!new_connection->IsKindOf(CLASSINFO(wxTCPConnection))) {
	501	delete new_connection;
	502	codeco->Write8(IPC_FAIL);
	503	return;
	504	}
	505	// Acknowledge success
	506	codeco->Write8(IPC_CONNECT);
	507
	508	new_connection->m_topic = topic_name;
	509	new_connection->m_sockstrm = stream;
	510	new_connection->m_codeci = codeci;
	511	new_connection->m_codeco = codeco;
	512	sock->Callback(Client_OnRequest);
	513	sock->CallbackData((char *)new_connection);
	514	sock->Notify(TRUE);
	515	} else {
	516	// Send failure message
	517	codeco->Write8(IPC_FAIL);
	518	}
	519	}
	520	}
	521
	522	#endif
	523	// wxUSE_SOCKETS