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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>
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<TITLE>code/nel/src/net/callback_net_base.cpp - view - 1.33</TITLE></HEAD>
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<table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#aaaaaa"><tr valign=bottom><td><a href="callback_net_base.cpp?sortby=date"><IMG SRC="http://www.nevrax.org/inc/img/picto-up.gif" ALT="[BACK]" BORDER="0" WIDTH="14" HEIGHT="13"></a> <b>Return to <A HREF="callback_net_base.cpp?sortby=date">callback_net_base.cpp</A>
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Revision <B>1.33</B>, <i>Wed Jun 12 10:16:34 2002 UTC</i> (6 weeks, 4 days ago) by <i>lecroart</i>
<BR>Branch: <b>MAIN</b>
<BR>CVS Tags: <b>HEAD</b><BR>Changes since <b>1.32: +4 -7
lines</b><PRE>
ADDED: changed NULL into InvalidSockId
</PRE>
</td></tr></table><HR noshade><PRE>/** \file callback_net_base.cpp
* Network engine, layer 3, base
*
* $Id: callback_net_base.cpp,v 1.33 2002/06/12 10:16:34 lecroart Exp $
*/
/* Copyright, 2001 Nevrax Ltd.
*
* This file is part of NEVRAX NEL.
* NEVRAX NEL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
* NEVRAX NEL is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with NEVRAX NEL; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "stdnet.h"
#include "nel/misc/string_id_array.h"
#include "nel/misc/hierarchical_timer.h"
#include "nel/net/buf_sock.h"
#include "nel/net/callback_net_base.h"
#ifdef USE_MESSAGE_RECORDER
#pragma message ( "NeL Net layer 3: message recorder enabled" )
#include "nel/net/message_recorder.h"
#else
#pragma message ( "NeL Net layer 3: message recorder disabled" )
#endif
using namespace std;
using namespace NLMISC;
namespace NLNET {
/*
*
*/
void cbnbMessageRecvAssociations (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
// receive a new message association
CStringIdArray::TStringId size;
msgin.serial (size);
nldebug ("LNETL3NB_ASSOC: The other side gave me %d association strings", size);
for (CStringIdArray::TStringId i = 0; i < size; i++)
{
std::string name;
CStringIdArray::TStringId id;
msgin.serial (name);
msgin.serial (id);
// if id == -1, it means that there are no callback associated to this message
// it should not happen, it mean that one side send a message that the other side
// can't manage in his callbackarray.
// to resolve the problem, add the callback in the callbackarray in the other side
// and put NULL if you don't want to manage this message
nlassert (id != -1);
nldebug ("LNETL3NB_ASSOC: association '%s' -> %d", name.c_str (), id);
netbase.getSIDA().addString (name, id);
}
}
/*
* the other side want to know some of my association, send them!
*/
void cbnbMessageAskAssociations (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
CMessage msgout (netbase.getSIDA(), "RA");
CStringIdArray::TStringId size;
msgin.serial (size);
nldebug ("LNETL3NB_ASSOC: The other side want %d string associations", size);
msgout.serial (size);
for (sint i = 0; i < size; i++)
{
string name;
msgin.serial (name);
nldebug ("LNETL3NB_ASSOC: sending association '%s' -> %d", name.c_str (), netbase._OutputSIDA.getId(name));
// if this assert occurs, it means that the other side ask an unknown message
// or that there are different types of client (with differents callbackarray) and one of the client doesn't have this callback
nlassert(netbase._OutputSIDA.getId(name) != -1);
msgout.serial (name);
CStringIdArray::TStringId id = netbase._OutputSIDA.getId (name);
msgout.serial (id);
}
// send the message to the other side
netbase.send (msgout, from);
}
static TCallbackItem cbnbMessageAssociationArray[] =
{
{ "AA", cbnbMessageAskAssociations },
{ "RA", cbnbMessageRecvAssociations },
};
/*
* Disconnection callback
*/
void cbnbNewDisconnection (TSockId from, void *data)
{
nlassert (data != NULL);
CCallbackNetBase *base = (CCallbackNetBase *)data;
nldebug("LNETL3NB: cbnbNewDisconnection()");
#ifdef USE_MESSAGE_RECORDER
// Record or replay disconnection
base->noticeDisconnection( from );
#endif
// Call the client callback if necessary
if (base->_DisconnectionCallback != NULL)
base->_DisconnectionCallback (from, base->_DisconnectionCbArg);
}
/*
* Constructor
*/
CCallbackNetBase::CCallbackNetBase( TRecordingState rec, const string& recfilename, bool recordall ) :
_FirstUpdate (true), _DisconnectionCallback(NULL), _DisconnectionCbArg(NULL)
#ifdef USE_MESSAGE_RECORDER
, _MR_RecordingState(rec), _MR_UpdateCounter(0)
#endif
{
_ThreadId = getThreadId ();
_NewDisconnectionCallback = cbnbNewDisconnection;
_BytesSent = 0;
_BytesReceived = 0;
createDebug(); // for addNegativeFilter to work even in release and releasedebug modes
// add the callback needed to associate messages with id
addCallbackArray (cbnbMessageAssociationArray, sizeof (cbnbMessageAssociationArray) / sizeof (cbnbMessageAssociationArray[0]));
#ifdef USE_MESSAGE_RECORDER
switch ( _MR_RecordingState )
{
case Record :
_MR_Recorder.startRecord( recfilename, recordall );
break;
case Replay :
_MR_Recorder.startReplay( recfilename );
break;
default:;
// No recording
}
#endif
}
/*
* Append callback array with the specified array
*/
void CCallbackNetBase::addCallbackArray (const TCallbackItem *callbackarray, CStringIdArray::TStringId arraysize)
{
checkThreadId ();
// be sure that the 2 array have the same size
nlassert (_CallbackArray.size () == (uint)_OutputSIDA.size ());
if (arraysize == 1 && callbackarray[0].Callback == NULL && string("") == callbackarray[0].Key)
{
// it's an empty array, ignore it
return;
}
// resize the array
sint oldsize = _CallbackArray.size();
_CallbackArray.resize (oldsize + arraysize);
_OutputSIDA.resize (oldsize + arraysize);
//TOO MUCH MESSAGE nldebug ("L3NB_CB: Adding %d callback to the array", arraysize);
for (sint i = 0; i < arraysize; i++)
{
CStringIdArray::TStringId ni = oldsize + i;
//TOO MUCH MESSAGE nldebug ("L3NB_CB: Adding callback to message '%s', id '%d'", callbackarray[i].Key, ni);
// copy callback value
_CallbackArray[ni] = callbackarray[i];
// add the string to the string id array
_OutputSIDA.addString (callbackarray[i].Key, ni);
}
// nldebug ("LNETL3NB_CB: Added %d callback Now, there's %d callback associated with message type", arraysize, _CallbackArray.size ());
}
/*
* processOneMessage()
*/
void CCallbackNetBase::processOneMessage ()
{
checkThreadId ();
H_AUTO (CCallbackNetBase_processOneMessage);
CMessage msgin (_OutputSIDA, "", true);
TSockId tsid;
receive (msgin, &tsid);
_BytesReceived += msgin.length ();
nldebug ("LNETL3NB: Received a message %s from %s", msgin.toString().c_str(), tsid->asString().c_str());
// now, we have to call the good callback
NLMISC::CStringIdArray::TStringId pos = -1;
if (msgin.TypeHasAnId)
{
pos = msgin.getId ();
}
else
{
std::string name = msgin.getName ();
sint16 i;
for (i = 0; i < (sint16) _CallbackArray.size (); i++)
{
if (name == _CallbackArray[i].Key)
{
pos = i;
break;
}
}
}
TMsgCallback cb = NULL;
if (pos < 0 || pos >= (sint16) _CallbackArray.size ())
{
if (_DefaultCallback == NULL)
{
nlwarning ("LNETL3NB_CB: Callback %s not found in _CallbackArray", msgin.toString().c_str());
}
else
{
cb = _DefaultCallback;
}
}
else
{
cb = _CallbackArray[pos].Callback;
}
TSockId realid = getSockId (tsid);
if (!realid->AuthorizedCallback.empty() && msgin.getName() != realid->AuthorizedCallback)
{
nlwarning ("LNETL3NB_CB: %s try to call the callback %s but only %s is authorized. Disconnect him!", tsid->asString().c_str(), msgin.toString().c_str(), tsid->AuthorizedCallback.c_str());
disconnect (tsid);
}
else if (cb == NULL)
{
nlwarning ("LNETL3NB_CB: Callback %s is NULL, can't call it", msgin.toString().c_str());
}
else
{
nldebug ("LNETL3NB_CB: Calling callback (%s)%s", msgin.getName().c_str(), (cb==_DefaultCallback)?" DEFAULT_CB":"");
cb(msgin, realid, *this);
}
/*
if (pos < 0 || pos >= (sint16) _CallbackArray.size ())
{
if (_DefaultCallback == NULL)
nlwarning ("LNETL3NB_CB: Callback %s not found in _CallbackArray", msgin.toString().c_str());
else
{
// ...
}
}
else
{
TSockId realid = getSockId (tsid);
if (!realid->AuthorizedCallback.empty() && msgin.getName() != realid->AuthorizedCallback)
{
nlwarning ("LNETL3NB_CB: %s try to call the callback %s but only %s is authorized. Disconnect him!", tsid->asString().c_str(), msgin.toString().c_str(), tsid->AuthorizedCallback.c_str());
disconnect (tsid);
}
else if (_CallbackArray[pos].Callback == NULL)
{
nlwarning ("LNETL3NB_CB: Callback %s is NULL, can't call it", msgin.toString().c_str());
}
else
{
nldebug ("LNETL3NB_CB: Calling callback (%s)", _CallbackArray[pos].Key);
_CallbackArray[pos].Callback (msgin, realid, *this);
}
}
*/
}
/*
* baseUpdate
* Recorded : YES
* Replayed : YES
*/
void CCallbackNetBase::baseUpdate (sint32 timeout)
{
checkThreadId ();
H_AUTO (CCallbackNetBase_baseUpdate);
nlassert( timeout >= -1 );
TTime t0 = CTime::getLocalTime();
//
// The first time, we init time counters
//
if (_FirstUpdate)
{
// nldebug("LNETL3NB: First update()");
_FirstUpdate = false;
_LastUpdateTime = t0;
_LastMovedStringArray = t0;
}
//
// Every 1 seconds if we have new unknown association, we ask them to the other side
//
if (t0 - _LastUpdateTime > 1000)
{
// nldebug("LNETL3NB: baseUpdate()");
_LastUpdateTime = t0;
const set<string> &sa = _InputSIDA.getNeedToAskedStringArray ();
if (!sa.empty ())
{
CMessage msgout (_InputSIDA, "AA");
//nlassert (sa.size () < 65536); // no size limit anymore
CStringIdArray::TStringId size = sa.size ();
nldebug ("LNETL3NB_ASSOC: I need %d string association, ask them to the other side", size);
msgout.serial (size);
for (set<string>::iterator it = sa.begin(); it != sa.end(); it++)
{
nldebug ("LNETL3NB_ASSOC: what is the id of '%s'?", (*it).c_str ());
string str(*it);
msgout.serial (str);
}
// send the message to the other side
send (msgout, 0);
_InputSIDA.moveNeedToAskToAskedStringArray();
_LastMovedStringArray = t0;
}
}
//
// Every 60 seconds if we have not answered association, we ask again to get them!
//
if (!_InputSIDA.getAskedStringArray().empty() && t0 - _LastMovedStringArray > 60000)
{
// we didn't have an answer for the association, resend them
const set<string> sa = _InputSIDA.getAskedStringArray ();
CMessage msgout (_InputSIDA, "AA");
//nlassert (sa.size () < 65536); // no size limit anymore
CStringIdArray::TStringId size = sa.size ();
nldebug ("LNETL3NB_ASSOC: client didn't answer my asked association, retry! I need %d string association, ask them to the other side", size);
msgout.serial (size);
for (set<string>::iterator it = sa.begin(); it != sa.end(); it++)
{
nldebug ("LNETL3NB_ASSOC: what is the id of '%s'?", (*it).c_str ());
string str(*it);
msgout.serial (str);
}
// sends the message to the other side
send (msgout, 0);
_LastMovedStringArray = t0;
}
/*
* timeout -1 => read one message in the queue
* timeout 0 => read all messages in the queue
* timeout other => read all messages in the queue until timeout expired (at least all one time)
*/
bool exit = false;
while (!exit)
{
// process all messages in the queue
while (dataAvailable ())
{
processOneMessage ();
if (timeout == -1)
{
exit = true;
break;
}
}
// need to exit?
if (timeout == 0 || (sint32)(CTime::getLocalTime() - t0) > timeout)
{
exit = true;
}
else
{
// enable multithreading on windows :-/
H_AUTO (CCallbackNetBase_baseUpdate_nlSleep);
nlSleep (10);
}
}
#ifdef USE_MESSAGE_RECORDER
_MR_UpdateCounter++;
#endif
}
const CInetAddress& CCallbackNetBase::hostAddress (TSockId hostid)
{
// should never be called
nlstop;
static CInetAddress tmp;
return tmp;
}
void CCallbackNetBase::setOtherSideAssociations (const char **associationarray, NLMISC::CStringIdArray::TStringId arraysize)
{
checkThreadId ();
nldebug ("LNETL3NB_ASSOC: setOtherSideAssociations() sets %d association strings", arraysize);
for (sint i = 0; i < arraysize; i++)
{
nldebug ("LNETL3NB_ASSOC: association '%s' -> %d", associationarray[i], i);
getSIDA().addString (associationarray[i], i);
}
}
void CCallbackNetBase::displayAllMyAssociations ()
{
checkThreadId ();
_OutputSIDA.display ();
}
void CCallbackNetBase::authorizeOnly (const char *callbackName, TSockId hostid)
{
checkThreadId ();
nldebug ("LNETL3NB: authorizeOnly (%s, %s)", callbackName, hostid->asString().c_str());
hostid = getSockId (hostid);
nlassert (hostid != InvalidSockId);
hostid->AuthorizedCallback = (callbackName == NULL)?"":callbackName;
}
#ifdef USE_MESSAGE_RECORDER
/*
* Replay dataAvailable() in replay mode
*/
bool CCallbackNetBase::replayDataAvailable()
{
nlassert( _MR_RecordingState == Replay );
if ( _MR_Recorder.ReceivedMessages.empty() )
{
// Fill the queue of received messages related to the present update
_MR_Recorder.replayNextDataAvailable( _MR_UpdateCounter );
}
return replaySystemCallbacks();
}
/*
* Record or replay disconnection
*/
void CCallbackNetBase::noticeDisconnection( TSockId hostid )
{
nlassert (hostid != InvalidSockId); // invalid hostid
if ( _MR_RecordingState != Replay )
{
if ( _MR_RecordingState == Record )
{
// Record disconnection
CMessage emptymsg;
_MR_Recorder.recordNext( _MR_UpdateCounter, Disconnecting, hostid, emptymsg );
}
}
else
{
// Replay disconnection
hostid->disconnect( false );
}
}
#endif // USE_MESSAGE_RECORDER
/*
* checkThreadId
*/
void CCallbackNetBase::checkThreadId () const
{
/* some people use this class in different thread but with a mutex to be sure to have
no concurent access
if (getThreadId () != _ThreadId)
{
nlerror ("You try to access to the same CCallbackClient or CCallbackServer with 2 differents thread (%d and %d)", _ThreadId, getThreadId());
}
*/
}
} // NLNET
</PRE>
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