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khanat-opennel-code/code/ryzom/server/src/frontend_service/frontend_service.cpp

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initial version
2010-05-06 00:08:41 +00:00
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdpch.h"
#include <nel/misc/stop_watch.h>
#include <nel/misc/sheet_id.h>
#include <nel/misc/path.h>
#include <nel/misc/o_xml.h>
#include <nel/misc/thread.h>
#include <nel/net/unified_network.h>
#include <nel/net/login_server.h>
#include "game_share/action_factory.h"
#include "game_share/action_position.h"
#include "game_share/action_sync.h"
#include "game_share/action_disconnection.h"
#include "game_share/action_association.h"
#include "game_share/action_association.h"
#include "game_share/action_login.h"
#include "game_share/action_generic.h"
#include "game_share/action_generic_multi_part.h"
#include "game_share/action_sint64.h"
#include "game_share/action_dummy.h"
#include "game_share/action_target_slot.h"
#include "game_share/simlag.h"
#include "game_share/tick_event_handler.h"
#include "game_share/ryzom_version.h"
#include "game_share/entity_types.h"
#include "game_share/system_message.h"
#include "game_share/generic_xml_msg_mngr.h"
//#include "gpm_service/gpm_service.h"
#include "frontend_service.h"
#include "module_manager.h"
#include "client_host.h"
#include "fe_stat.h"
#include "id_impulsions.h"
#include "uid_impulsions.h"
using namespace NLNET;
using namespace NLMISC;
using namespace CLFECOMMON;
// force admin module to link in
extern void admin_modules_forceLink();
void foo()
{
admin_modules_forceLink();
}
//#define FE_MULTITHREADED
// callback for module security system
void cbEntityIdChanged(CClientHost *clienthost);
CGenericXmlMsgHeaderManager GenericXmlMsgHeaderMngr;
NLNET::TServiceId SelfServiceId;
bool UseTickService = false;
uint32 Ticked = 0;
// Synchronization of flushing (sending) thread
volatile bool FlushInProgress = false;
// Allow beeping
bool AllowBeep = false;
// Client limit, to reduce memory usage
uint MaxNbClients = 1000;
// Size of UDP/IP/Ethernet headers: 8+20+14 = 42
const uint32 UDP_IP_ETH_HEADER_SIZE = 42;
CVariable<bool> DontNeedBackend("FS", "DontNeedBackend", "Debug feature to allow client connection without backend (1=always allow connection , 0=backend must be up)", false, 0, true);
CVariable<bool> UseSendThread("FS", "UseSendThread", "Use thread for sending", false, 0, true);
CVariable<bool> UseWebPatchServer("FS", "UseWebPatchServer", "Use Web Server for patching", true, 0, true);
CVariable<bool> AcceptClientsAtStartup("FS", "AcceptClientsAtStartup", "Set Frontend Accept mode (1=accept clients, 0=patching mode)", false, 0, true);
CVariable<string> PatchingURLFooter("FS", "PatchingURLFooter", "Patching server listenning port + directory (default is ':43435/patch')", ":43435/patch", 0, true);
CVariable<string> StartWebServerSysCommand("FS", "StartWebServerSysCommand", "System command to execute when to start Web Patch Server", "", 0, true);
CVariable<string> StopWebServerSysCommand("FS", "StopWebServerSysCommand", "System command to execute when to stop Web Patch Server", "", 0, true);
CVariable<bool> PublishFSHostAsIP("FS", "PublishFSHostAsIP", "Publish FSHost to the WS as IP:port instead of hostname:post", false, 0, true);
CVariable<uint32> DelayBeforeUPDAlert("FS", "DelayBeforeUPDAlert", "Delay (in s) before raising an alert when the service has not received UPD packet", 10*60, 0, true); // 10m, default
CVariable<bool> VerboseFEStatsTime("fs", "VerboseFEStatsTime", "Verbose FESTATS and FETIME", false, 0, true);
std::string getPatchingAddress()
{
std::string la;
if (IService::getInstance()->haveArg('D'))
{
// use the command line param if set
la = IService::getInstance()->getArg('D');
}
else if (IService::getInstance()->ConfigFile.exists ("ListenAddress"))
{
// use the config file param if set
la = IService::getInstance()->ConfigFile.getVar ("ListenAddress").asString();
}
NLNET::CInetAddress addr(la);
return string("http://") + addr.ipAddress() + PatchingURLFooter.get();
}
/*
* Conditional beep
*/
void beepIfAllowed( uint freq, uint duration )
{
if ( AllowBeep )
beep( freq, duration );
}
/***
*** Global functions for easy multithreadization
***/
/*
* Update task
*/
// Update entity container + Process vision + sort by distance + calculate priorities
void updatePriorities()
{
H_AUTO(UpdatePriorities);
//CFrontEndService::instance()->entityContainer().update(); // now called by the mirror notification callback
CFrontEndService::instance()->PrioSub.update();
}
// Update clients states
void updateClientsStates()
{
H_AUTO(RemoveDeadClients);
#ifndef SIMUL_CLIENTS
CFrontEndService *service = CFrontEndService::instance();
service->updateClientsStates();
#endif
}
/*
* Send task (see CFeSendSub::update())
*/
// Prepare headers
void prepareHeadersAndFillImpulses()
{
H_AUTO(PrepareHeaders);
CFrontEndService::instance()->SendWatch.start();
CFrontEndService::instance()->sendSub()->prepareSendCycle();
if ( ! CFrontEndService::instance()->receiveSub()->clientMap().empty() )
{
CFrontEndService::instance()->sendSub()->prepareHeadersAndFillImpulses();
}
}
// Fill prioritized actions
void fillPrioritizedActionsToSend()
{
H_AUTO(FillPrioritizedActions);
if ( ! CFrontEndService::instance()->receiveSub()->clientMap().empty() )
{
CFrontEndService::instance()->sendSub()->fillPrioritizedActions();
}
}
// Swap send buffers
void swapSendBuffers()
{
H_AUTO(WaitAndSwapSendBuffers)
// Wait for the end of flushMessagesToSend()
while ( FlushInProgress )
{
nlSleep( 0 );
}
// Swap the buffers
CFrontEndService::instance()->sendSub()->swapSendBuffers();
FlushInProgress = true;
CFrontEndService::instance()->SendWatch.stop();
}
// Flush messages
void flushMessagesToSend()
{
CFrontEndService::instance()->sendSub()->flushMessages();
FlushInProgress = false;
}
/*
* Send thread & runnable
*/
class CSendRunnable : public IRunnable
{
public:
CSendRunnable() : StopThread(false), SendBuffer(false) {}
volatile bool StopThread;
volatile bool SendBuffer;
virtual void run()
{
while (!StopThread)
{
while (!StopThread && !SendBuffer)
nlSleep(0);
if (StopThread)
break;
SendBuffer = false;
flushMessagesToSend();
}
StopThread = false;
}
};
CSendRunnable SendTask;
IThread* SendThread = NULL;
/*
* Receive task
*/
// Swap receive queues
void swapReadBuffers()
{
H_AUTO(SwapReadBuffers);
CFrontEndService::instance()->receiveSub()->swapReadQueues();
}
// Read incoming data from the current read queue
void readIncomingData()
{
H_AUTO(ReadIncomingData);
CFrontEndService::instance()->receiveSub()->readIncomingData();
}
/**************************
* INIT *
**************************/
/*
* Send an impulsion message to a destination client (warning: channel is "level", in fact)
*/
void sendImpulsion( TClientId clientid, CMessage& msgin, uint8 channel, const char *extendedMsg, bool forceSingleShot )
{
uint32 bytelen;
msgin.serial( bytelen ); // sent with serialBufferWithSize(), the following is the buffer
CActionGeneric *ag = (CActionGeneric *)CActionFactory::getInstance()->create( INVALID_SLOT, ACTION_GENERIC_CODE );
ag->setFromMessage( msgin, bytelen );
ag->AllowExceedingMaxSize = forceSingleShot;
sint32 impulseBitSize = (sint32)CActionFactory::getInstance ()->size( ag );
sint32 maxImpulseBitSize = CFrontEndService::instance()->getImpulseMaxBitSize( channel );
if ( forceSingleShot || (impulseBitSize < maxImpulseBitSize) )
{
// Simple impulsion
#ifdef TRACE_SHARD_MESSAGES
LOG_IMPULSION_INFO("FETRACE:%u: Preparing simple impulsion %p for C%hu, %s (len=%u, %d/%d bits)", CTickEventHandler::getGameCycle(), ag, clientid, extendedMsg, bytelen, impulseBitSize, maxImpulseBitSize);
#endif
CFrontEndService::instance()->addImpulseToClient (clientid, ag, channel);
}
else
{
// MultiPart impulsion
CActionFactory::getInstance()->remove((CActionImpulsion*&)ag);
CActionGenericMultiPart *agmp = (CActionGenericMultiPart *)CActionFactory::getInstance ()->create (INVALID_SLOT, ACTION_GENERIC_MULTI_PART_CODE);
sint32 minimumBitSizeForMP = CActionFactory::getInstance ()->size (agmp);
sint32 availableSize = (maxImpulseBitSize - minimumBitSizeForMP) / 8; // (in bytes)
#ifdef NL_DEBUG
nlassert( availableSize > 0 ); // the available size must be larger than the 'empty' size
#endif
sint32 nbBlock = (bytelen + availableSize - 1) / availableSize;
TClientIdCont &cont = CFrontEndService::instance()->receiveSub()->clientIdCont();
if (clientid >= cont.size() || cont[clientid] == NULL)
{
nlwarning ("Can't send impulse to client %u (doesn't exist)", clientid);
CActionFactory::getInstance()->remove((CActionImpulsion*&)agmp);
return;
}
uint8 num = cont[clientid]->ImpulseMultiPartNumber++;
#ifdef TRACE_SHARD_MESSAGES
LOG_IMPULSION_INFO("FETRACE:%u: Preparing multipart impulsion %p for C%hu, %s (len=%u, num %d, nbpart %d, size per block %d)", CTickEventHandler::getGameCycle(), agmp, clientid, extendedMsg, bytelen, num, nbBlock, availableSize);
#endif
for (sint32 i = 0; i < nbBlock; i++)
{
if (i != 0)
agmp = (CActionGenericMultiPart *)CActionFactory::getInstance ()->create (INVALID_SLOT, ACTION_GENERIC_MULTI_PART_CODE);
agmp->set(num, (uint16)i, msgin.buffer() + msgin.getPos(), bytelen, availableSize, (uint16)nbBlock);
// nldebug ("num %d part %d avail %d nbblock %d", num, i, availableSize, nbBlock);
CFrontEndService::instance()->addImpulseToClient (clientid, agmp, channel);
}
}
//nldebug( "Contents of impulsion: '%s'", toHexaString(ImpulseBMS.bufferAsVector()).c_str() );
}
/*
* Callback called when the input service gives a login mapping
*/
void cbMapIdToUid( CMessage& msgin, const string& serviceName, NLNET::TServiceId serviceId )
{
// Serial in the CEntityId and the Uid
TUid uid;
CEntityId id;
msgin.serial( uid );
msgin.serial( id );
// Search the Uid in client hosts
CFrontEndService *fe = CFrontEndService::instance();
CClientHost *clienthost = fe->receiveSub()->findClientHostByUid( uid );
if ( clienthost != NULL )
{
nlinfo( "%u: Mapping CEntityId %s to uid %u for client %u", CTickEventHandler::getGameCycle(), id.toString().c_str(), uid, clienthost->clientId() );
if( clienthost->eId() != CEntityId::Unknown )
{
nlwarning( "Client %u had already a CEntityId: %s !", uid, clienthost->eId().toString().c_str() );
return;
}
clienthost->setEId( id );
// update security for client module
cbEntityIdChanged(clienthost);
if ( fe->receiveSub()->EntityToClient.findEntityId( id ) )
{
nlwarning( "The CEntityId %s is already owned by another client!", id.toString().c_str() );
return;
}
fe->receiveSub()->EntityToClient.addId( id, clienthost->clientId() );
// The entity index will be set later, in CVisionProvider::processVision()
// The forwarding to the client is done by an impulsion from the back-end
// Send its discrete properties to the client. It is necessary because
// before the FE knows the CEntityId of the client, the vision provider
// cannot update its properties
/*for ( uint32 p = FIRST_DISCREET_PROPINDEX; p < fe->PrioSub.PropTranslator.nbPropertiesByEntityId( id ); ++p )
{
clienthost->PropDispatcher.setPriority( 0, (TPropIndex)p, fe->PrioSub.VisionArray.prioLoc( clienthost->clientId(), 0, (TPropIndex)p ), (TPriority)HIGHEST_PRIORITY );
}*/
}
else
{
nlwarning( "Uid not found for client login (%s %u)", id.toString().c_str(), uid );
}
}
/*
* Receive an impulsion to send to a client, using a uid (user account id).
* This is used for messages sent to a client before he has choosen his id (entity id).
*/
void cbImpulsionUid (CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId)
{
// Serialize in Uid
TUid uid;
msgin.serial(uid);
CFeReceiveSub *frs = CFrontEndService::instance()->receiveSub();
CClientHost *clienthost;
// Find the client using the Uid (either in limbo or in online clients)
clienthost = frs->findClientHostByUid( uid, true );
if ( clienthost != NULL )
{
// Send message to the client
sendImpulsion( clienthost->clientId(), msgin, 1, toString( "from %s to UId %u", serviceName.c_str(), uid ).c_str(), false );
}
else
{
// The client has left
nldebug( "Invalid recipient client uid for impulsion (%u) from %s", uid, serviceName.c_str() );
}
}
/*
* Receive an impulsion to send to a client, using a id
*/
void cbImpulsionId (CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId)
{
// Serialize in CEntityId
CEntityId id;
msgin.serial(id);
// Find the client using the id
TClientId clientid = CFrontEndService::instance()->receiveSub()->EntityToClient.getClientId( id );
if ( clientid != INVALID_CLIENT )
{
// Send message
sendImpulsion( clientid, msgin, 1, toString( "from %s to Id %s", serviceName.c_str(), id.toString().c_str() ).c_str(), false );
}
else
{
// The client has left
nldebug( "Invalid recipient client id for impulsion (%s)", id.toString().c_str() );
}
}
/*
* Receive an impulsion, to send to a client, using a id and level (abusively called channel)
*/
void cbImpulsionIdChannel (CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId)
{
// Serialize in CEntityId
CEntityId id;
uint8 channel;
msgin.serial(id);
msgin.serial(channel);
// Find the client using the id
TClientId clientid = CFrontEndService::instance()->receiveSub()->EntityToClient.getClientId( id );
if ( clientid != INVALID_CLIENT )
{
if ( channel > 2 )
nlwarning( "Invalid level %hu for impulsion from %s", (uint16)channel, serviceName.c_str() );
// Send message
sendImpulsion( clientid, msgin, channel, toString( "with level %hu from %s to Id %s", (uint16)channel, serviceName.c_str(), id.toString().c_str() ).c_str(), false );
}
else
{
nldebug( "Invalid recipient client id for impulsion (level %hu) (%s)", (uint16)channel, id.toString().c_str() );
}
}
/*
* Receive an impulsion, to send to a client, for a database update
*/
void cbImpulsionDatabase (CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId)
{
// Serialize in CEntityId
CEntityId id;
msgin.serial(id);
// Find the client using the id
TClientId clientid = CFrontEndService::instance()->receiveSub()->EntityToClient.getClientId( id );
if ( clientid != INVALID_CLIENT )
{
// Send database message into level 2.
// The level 2 has 4 subchannels => subsequents sendings are not garanteed to be delivered
// in the same order.
//
// Warning: the channel has a limited size. If the database if flooded by updates, further
// database impulsions will be blocked.
sendImpulsion( clientid, msgin, 2, toString( "for database from %s to Id %s", serviceName.c_str(), id.toString().c_str() ).c_str(), false ); // TEMP: multipart allowed (because first sending with no constraints)
}
else
{
nldebug( "Invalid recipient client id for database impulsion (%s)", id.toString().c_str() );
}
}
/*
*
*/
void cbImpulsionMultiDatabase (CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId)
{
enum {
SendDeltasToAll = 1, // From class CCDBGroup; must match ;)
};
uint nbSent = 0;
// Read message flag
uint8 sendFlags = 0; // Make warning C4700 silent
msgin.serial (sendFlags);
if ((sendFlags & SendDeltasToAll) == SendDeltasToAll)
{
// Broadcast to every connected client to this frontend
// Store current position in input message
sint32 msgPosBeforeData = msgin.getPos();
// All connected clients
THostMap::iterator ihm;
for (ihm =CFrontEndService::instance()->receiveSub()->clientMap().begin();
ihm!=CFrontEndService::instance()->receiveSub()->clientMap().end(); ++ihm )
{
// See cbImpulsionDatabase
CClientHost *destClient = GETCLIENTA(ihm);
// Check if client is still online and has chosen a player to play with
if (!destClient->isDisconnected () &&
!destClient->eId ().isUnknownId())
{
// Set message position back
msgin.seek( msgPosBeforeData, NLMISC::IStream::begin );
sendImpulsion( destClient->clientId(), msgin, 2, "", false ); // multipart allowed
// One more...
++nbSent;
}
}
}
else
{
// Explicit list of clients is specified
// Read recipient list
vector<CEntityId> recipientIds;
msgin.serialCont( recipientIds );
// Store current position in input message
sint32 msgPosAfterRecipients = msgin.getPos();
for ( vector<CEntityId>::const_iterator itr=recipientIds.begin(); itr!=recipientIds.end(); ++itr )
{
// Find the client using the id
const CEntityId& id = *itr;
TClientId clientid = CFrontEndService::instance()->receiveSub()->EntityToClient.getClientId( id );
if ( clientid != INVALID_CLIENT )
{
// Set message position back
msgin.seek( msgPosAfterRecipients, NLMISC::IStream::begin );
// See cbImpulsionDatabase
sendImpulsion( clientid, msgin, 2, "", false ); // multipart allowed
++nbSent;
}
// Skip recipients that are not connected on this front-end
}
}
//if ( nbSent != 0 )
// nldebug( "Sent CDB_MULTI_IMPULSION to %u clients", nbSent );
}
/*
* Set the names requested to the IOS
*/
void cbSetEntityNames( CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId )
{
uint32 len;
msgin.serial( len );
for ( uint32 i=0; i!=len; ++i )
{
TDataSetRow entityIndex;
string name;
msgin.serial( entityIndex );
msgin.serial( name );
CFrontEndService::instance()->EntityNames[ entityIndex.getIndex() ] = name;
}
nlinfo( "Got %u names from service %hu", len, serviceId.get() );
}
/*
* Server request frontend to disconnect a client
*/
void cbServerDisconnectClient( CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId )
{
uint32 userId;
msgin.serial(userId);
cbDisconnectClient(userId, serviceName);
}
/*
* Server request frontend to disconnect a client
*/
void cbDisconnectAllClients( CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId )
{
for (THostMap::iterator it = CFrontEndService::instance()->receiveSub()->clientMap().begin (); it != CFrontEndService::instance()->receiveSub()->clientMap().end (); it++)
{
// Ask the client to disconnect
CActionDisconnection *act = (CActionDisconnection*)(CActionFactory::getInstance()->create(INVALID_SLOT, ACTION_DISCONNECTION_CODE));
GETCLIENTA(it)->ImpulseEncoder.add(act, 0);
// Prepare removal of client on the front-end
CFrontEndService::instance()->receiveSub()->removeFromRemoveList( GETCLIENTA(it)->clientId() ); // prevent to insert it twice
CFrontEndService::instance()->receiveSub()->addToRemoveList( GETCLIENTA(it)->clientId() );
}
}
/*
* Return the name of an entity (if previously retrieved or "" if no name)
*/
std::string getEntityName( const TDataSetRow& entityIndex )
{
TEntityNamesMap::const_iterator itn = CFrontEndService::instance()->EntityNames.find( entityIndex.getIndex() );
if ( itn != CFrontEndService::instance()->EntityNames.end() )
{
return (*itn).second;
}
else
{
return string("");
}
}
/*
* Welcome Service request frontend to switch to Accept Clients mode
*/
void setAcceptClients()
{
CFrontEndService::instance()->AcceptClients = true;
NLMISC::ICommand::execute("stopWebPatchServer", *InfoLog);
}
/*
* Welcome Service request frontend to switch to Accept Clients mode
*/
void cbAcceptClients( CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId )
{
nlinfo("cbAcceptClients: asked by service %s %d to accept clients (patching is no longer available on this server)", serviceName.c_str(), serviceId.get());
setAcceptClients();
}
/*
*
*/
TUnifiedCallbackItem cbFrontEndArray [] =
{
{ "IMPULSION_ID", cbImpulsionId },
{ "IMPULS_CH_ID", cbImpulsionIdChannel },
{ "CDB_IMPULSION", cbImpulsionDatabase },
{ "CDB_MULTI_IMPULSION", cbImpulsionMultiDatabase },
{ "IMPULSION_UID", cbImpulsionUid },
{ "CL_ID", cbMapIdToUid },
{ "ENTITY_NAMES", cbSetEntityNames },
{ "DISCONNECT_CLIENT", cbServerDisconnectClient }, // Called by server to disconnect a client
{ "DISCONNECT_ALL_CLIENTS", cbDisconnectAllClients }, // Called by server to disconnect all clients at once
{ "FS_ACCEPT", cbAcceptClients }
};
//
void cfcbPriorityMode( CConfigFile::CVar& var )
{
uint8 pm = var.asInt();
if ( pm == 0 )
{
nlwarning( "PriorityMode 0 (DistanceOnly) is not obsolete and not supported!" );
}
//CFrontEndService::instance()->PrioSub.Prioritizer.setPrioStrategy( (CPrioritizer::TPrioStrategy)1 );
//nlinfo( "\tPriorityMode is now %hu", (uint16)pm );
nlinfo( "Priority strategy is DistanceDelta" );
}
//
void cfcbTotalBandwidth( CConfigFile::CVar& var )
{
uint32 tb = var.asInt();
CFrontEndService::instance()->_SendSub.setTotalBandwidth( tb );
// Not implemented anymore
//nlinfo( "\tTotalBandwidth is now %u", tb );
/*if ( CFrontEndService::instance()->_SendSub.clientBandwidth() != 0 )
nlinfo( "\tTotalbandwidth corresponds to %0.2f client buffers",
(float)CFrontEndService::instance()->_SendSub.totalBandwidth()/(float)CFrontEndService::instance()->_SendSub.clientBandwidth() );
*/
}
//
void cfcbClientBandwidth( CConfigFile::CVar& var )
{
uint32 cb = var.asInt();
if ( cb != 0 )
{
#ifdef INCLUDE_FE_STATS_IN_PACKETS
cb += STAT_HEADER_SIZE - UDP_IP_ETH_HEADER_SIZE;
#else
cb -= UDP_IP_ETH_HEADER_SIZE;
#endif
CFrontEndService::instance()->_SendSub.setClientBandwidth( cb );
nlinfo( "\tClientBandwidth is now %u bytes per game cycle, including UDP/IP/Ethernet headers (%u)", cb + UDP_IP_ETH_HEADER_SIZE, UDP_IP_ETH_HEADER_SIZE );
#ifdef INCLUDE_FE_STATS_IN_PACKETS
nlinfo( "\t(also including stat header of %u bytes)", STAT_HEADER_SIZE );
#endif
}
}
//
void cfcbClientTimeOut( CConfigFile::CVar& var )
{
uint32 ct = var.asInt();
CFrontEndService::instance()->_ClientTimeOut = ct;
nlinfo( "\tClientTimeOut is now %u", ct );
}
//
void cfcbLimboTimeOut( CConfigFile::CVar& var )
{
uint32 ct = var.asInt();
CFrontEndService::instance()->_LimboTimeOut = ct;
nlinfo( "\tLimboTimeOut is now %u", ct );
}
//
void cfcbDisplayInfo( CConfigFile::CVar& var )
{
nlinfo ("\tDisplayInfo is now %s", var.asInt()!=0?"on":"off");
if ( var.asInt() != 0 )
{
InfoLog->removeFilter ("FE:");
}
else
{
InfoLog->addNegativeFilter ("FE:");
}
}
void cfcbClientMonitor( CConfigFile::CVar& var )
{
TClientId clientid = var.asInt();
CFrontEndService::instance()->monitorClient( clientid );
if ( clientid != 0 )
{
if ( clientid <= MAX_NB_CLIENTS )
nlinfo( "\tNow monitoring client %hu", clientid );
else
nlinfo( "Invalid client id for monitoring" );
}
else
{
nlinfo( "\tClient monitoring is now off" );
}
}
void cfcbAllowBeep( CConfigFile::CVar& var )
{
AllowBeep = (var.asInt() == 1);
nlinfo( "\tAllowBeep is now %hu", (uint16)AllowBeep );
}
void cfcbGameCycleRatio( CConfigFile::CVar& var )
{
sint gcratio = var.asInt();
CFrontEndService::instance()->setGameCycleRatio( gcratio );
nlinfo( "\tGameCycleRatio is now %d", gcratio );
}
void cfcbCalcDistanceExecutionPeriod( CConfigFile::CVar& var )
{
sint period = var.asInt();
CFrontEndService::instance()->PrioSub.VisionProvider.DistanceSpreader.ExecutionPeriod = period;
nlinfo( "\tCalcDistanceExecutionPeriod is now %d", period );
}
void cfcbSortPrioExecutionPeriod( CConfigFile::CVar& var )
{
sint period = var.asInt();
CFrontEndService::instance()->PrioSub.Prioritizer.SortSpreader.ExecutionPeriod = period;
nlinfo( "\tSortPrioExecutionPeriod is now %d", period );
}
void cfcbDistanceDeltaRatioForPos( CConfigFile::CVar& var )
{
uint32 ddratio = var.asInt();
CFrontEndService::instance()->PrioSub.Prioritizer.setDistanceDeltaRatioForPos( ddratio );
nlinfo( "\tDistanceDeltaRatioForPos is now %u", ddratio );
}
//
/*void cfcbPositionPrioExecutionPeriod( CConfigFile::CVar& var )
{
sint period = var.asInt();
CFrontEndService::instance()->PrioSub.Prioritizer.PositionSpreader.ExecutionPeriod = period;
nlinfo( "\tPositionPrioExecutionPeriod is now %d", period );
}
void cfcbOrientationPrioExecutionPeriod( CConfigFile::CVar& var )
{
sint period = var.asInt();
CFrontEndService::instance()->PrioSub.Prioritizer.OrientationSpreader.ExecutionPeriod = period;
nlinfo( "\tOrientationPrioExecutionPeriod is now %d", period );
}
void cfcbDiscreetPrioExecutionPeriod( CConfigFile::CVar& var )
{
sint period = var.asInt();
CFrontEndService::instance()->PrioSub.Prioritizer.DiscreetSpreader.ExecutionPeriod = period;
nlinfo( "\tDiscreetPrioExecutionPeriod is now %d", period );
}*/
/*
* Init variable from config file, at startup
*/
void initConfigVar( CConfigFile& cf, const char *varname, uint& var, const uint maxvalue )
{
var = cf.getVar( varname ).asInt();
if ( var > maxvalue )
{
nlwarning( "%s=%u exceeding maximum", varname, var );
var = maxvalue;
}
nlinfo( "\t%s = %u", varname, var );
}
/*
* Install callback and init variable from config file
*/
void installConfigVar( CConfigFile& cf, const char *varname, void (*callback) (CConfigFile::CVar&) )
{
cf.setCallback( varname, callback );
callback( cf.getVar( varname ) );
}
/*
* Login system callback
*/
void cbDisconnectClient (TUid userId, const std::string &reqServiceName)
{
for (THostMap::iterator it = CFrontEndService::instance()->receiveSub()->clientMap().begin (); it != CFrontEndService::instance()->receiveSub()->clientMap().end (); it++)
{
if ( GETCLIENTA(it)->Uid == userId)
{
// Ask the client to disconnect
CActionDisconnection *act = (CActionDisconnection*)(CActionFactory::getInstance()->create(INVALID_SLOT, ACTION_DISCONNECTION_CODE));
GETCLIENTA(it)->ImpulseEncoder.add(act, 0);
nlinfo( "%s asked to remove player %hu (uid %u)",
reqServiceName.c_str(),
GETCLIENTA(it)->clientId(),
userId );
// Prepare removal of client on the front-end
CFrontEndService::instance()->receiveSub()->removeFromRemoveList( GETCLIENTA(it)->clientId() ); // prevent to insert it twice
CFrontEndService::instance()->receiveSub()->addToRemoveList( GETCLIENTA(it)->clientId() );
return;
}
}
nlwarning( "%s asked to remove an unknown player (uid %u)", reqServiceName.c_str(), userId );
}
/*
* Get the last target entity position that was sent to a client at a specified tick in the past
*/
void cbGetTargetPosAtTick( CMessage& msgin, const string &serviceName, NLNET::TServiceId serviceId )
{
// Read input
TDataSetRow clientEntityIndex;
TGameCycle tick;
msgin.serial( clientEntityIndex );
msgin.serial( tick );
// Search
bool found = false;
TCoord x,y;
TClientId clientId = CFrontEndService::instance()->receiveSub()->EntityToClient.getClientId( clientEntityIndex );
if ( clientId != INVALID_CLIENT )
{
CFrontEndService::instance()->history()->getTargetPosAtTick( clientId, tick, x, y );
found = (x != 0); // && (y != 0); // not needed
}
// Write output
CMessage msgout( "TG_POS_AT" );
msgout.serial( found );
if ( found )
msgout.serial( x, y );
CUnifiedNetwork::getInstance()->send( serviceId, msgout ); // direct (reply)
}
static bool IosUp = false, EgsUp = false;
/*
* Callback called at service connexion
*/
void cbServiceUp( const string& serviceName, NLNET::TServiceId serviceId, void * )
{
if ( serviceName == "IOS" )
IosUp = true;
else if ( serviceName == "EGS" )
EgsUp = true;
else if ( serviceName == "WS" )
{
if (UseWebPatchServer)
{
// send patch server address
CMessage msgAddr("FEPA");
// serial address as string
std::string patchAddress = getPatchingAddress();
msgAddr.serial(patchAddress);
// serial current frontend state
bool acceptClients = CFrontEndService::instance()->AcceptClients;
msgAddr.serial(acceptClients);
// send it to incoming WS
CUnifiedNetwork::getInstance()->send(serviceId, msgAddr);
nldebug("WS %d welcome service is up, sent server patch URI '%s'", serviceId.get(), patchAddress.c_str());
if (CFrontEndService::instance()->AcceptClients)
{
nldebug("Note: frontend is yet in accept clients mode, patching is no longer available unless frontend is restarted", serviceId.get(), patchAddress.c_str());
}
}
// send number of players on FS
CMessage msgPlr("NBPLAYERS2");
uint32 nbClients = CFrontEndService::instance()->receiveSub()->clientMap().size();
uint32 nbPendingClients = CLoginServer::getNbPendingUsers();
msgPlr.serial(nbClients);
msgPlr.serial(nbPendingClients);
// send it to incoming WS
CUnifiedNetwork::getInstance()->send(serviceId, msgPlr);
nldebug("WS %d welcome service is up, reported %d online users", serviceId.get(), nbClients);
}
if ( EgsUp )
{
CFrontEndService::instance()->ShardDown = false;
nlinfo( "Leaving SERVER_DOWN mode" );
}
}
/*
* Callback called when service becomes down
*/
void cbServiceDown( const string& serviceName, NLNET::TServiceId serviceId, void * )
{
if ( serviceName == "GPMS" )
{
// Reset the slots of the clients before the property_receiver deletes the entities
CFrontEndService::instance()->PrioSub.VisionProvider.resetVision();
}
else if ( serviceName == "IOS" )
{
IosUp = false;
}
else if ( serviceName == "EGS" )
{
EgsUp = false;
}
if ( ! (EgsUp) ) // now the IOS shutdown is tolerated
{
if ( ! CFrontEndService::instance()->ShardDown ) // prevent from doing it several times
{
/*while( (ihm=CFrontEndService::instance()->receiveSub()->clientMap().begin()) != CFrontEndService::instance()->receiveSub()->clientMap().end() )
{
// Cannot use cbDisconnect() because we need the client to be removed at once, otherwise
// the property receiver could raise an assert in assignIndexToId(clientsid)
//CFrontEndService::instance()->receiveSub()->removeFromRemoveList( GETCLIENTA(ihm)->clientId() );
//CFrontEndService::instance()->receiveSub()->removeClientById( GETCLIENTA(ihm)->clientId() );
}*/
CFrontEndService::instance()->ShardDown = true;
nlinfo( "Entering SERVER_DOWN mode" );
// remove all limbo clients
uint clientsInLimbo = CFrontEndService::instance()->receiveSub()->LimboClients.size();
CFrontEndService::instance()->receiveSub()->LimboClients.clear();
nlinfo("Removed %d clients in limbo mode", clientsInLimbo);
}
}
beepIfAllowed( 440, 150 );
beepIfAllowed( 400, 150 );
}
/*
* Impulse ack callbacks
*/
void cbAckUnknown(CClientHost *client, CAction *action)
{
nldebug("FERECV: client %d acked action %d", client->clientId(), action->Code);
}
void cbAckDummy(CClientHost *client, CAction *action)
{
CActionDummy *dummy = (CActionDummy*)(action);
nldebug("FERECV: Client %d acked dummy %d", client->clientId(), dummy->Dummy1);
}
/*
* Init module manager
*/
const sint FE_MAIN = 0;
const sint FE_FLUSH = 1;
void CFrontEndService::initModuleManagers()
{
/*
CModuleManager::init(16);
// Warning: with several modules, the front-end service shows 100% of CPU in the
// Windows Task Manager. This is normal, and the service is still nice to other programs.
// For more information, see comment in CModuleManager::waitAllReady().
CModuleManager *mainMgr = new CModuleManager("FE_MAIN", false);
CModuleManager *flushMgr = new CModuleManager("FE_FLUSH", true);
_ModuleManagers.push_back(mainMgr);
_ModuleManagers.push_back(flushMgr);
#ifdef MEASURE_SENDING
nlinfo( "MEASURE_SENDING enabled" );
mainMgr->addModule(0, swapReadBuffers);
mainMgr->addModule(1, readIncomingData);
mainMgr->addModule(2, swapSendBuffers);
flushMgr->addWait(2);
flushMgr->addModule(3, flushMessagesToSend);
#else
mainMgr->addModule(0, swapReadBuffers);
mainMgr->addModule(1, readIncomingData);
mainMgr->addModule(2, ::updateClientsStates);
mainMgr->addModule(3, updatePriorities);
mainMgr->addModule(4, prepareHeadersAndFillImpulses);
mainMgr->addModule(5, fillPrioritizedActionsToSend);
mainMgr->addModule(6, swapSendBuffers); // waits for the end of flushMessagesToSend using the boolean FlushInProgress (with addWait there would be a deadlock at the beginning)
flushMgr->addWait(6);
flushMgr->addModule(7, flushMessagesToSend);
#endif // MEASURE_SENDING
*/
}
/*
*
*/
inline void cbUpdate()
{
CFrontEndService::instance()->onTick();
}
/*
*
*/
inline void CFrontEndService::onTick()
{
LastTickTime = CTime::getLocalTime();
if (StalledMode)
{
setClientsToSynchronizeState();
}
if ( _GCCount == 0 )
{
// Run manager's task
UserLWatch.start();
//H_BEFORE(UserUpdate);
if ( CFrontEndService::instance()->entityContainer().mirrorIsReady() )
{
//_ModuleManagers[0]->runOnce();
swapReadBuffers();
readIncomingData();
::updateClientsStates();
updatePriorities();
prepareHeadersAndFillImpulses();
fillPrioritizedActionsToSend();
swapSendBuffers(); // waits for the end of flushMessagesToSend using the boolean FlushInProgress (with addWait there would be a deadlock at the beginning)
SendTask.SendBuffer = true;
if (SendThread == NULL)
{
H_AUTO(FlushMessagesToSend);
flushMessagesToSend();
}
}
//H_AFTER(UserUpdate);
UserLWatch.stop();
TMsDuration userduration = UserLWatch.getDuration();
UserDurationPAverage = UserLWatch.getPartialAverage();
//nlinfo( "Sent actions: %u", CFrontEndService::instance()->SentActionsLastCycle );
_GCCount = _GCRatio;
}
--_GCCount;
}
/*
* Initialization
*/
//CDebugDisplayer FEDebugDisplayer("frontend_service_straight.log", true, "FE_DD");
void CFrontEndService::init()
{
setVersion (RYZOM_VERSION);
nlinfo( "Initializing front-end service..." );
try
{
// Load config
nlinfo( "Loading configuration from %s", ConfigFile.getFilename().c_str() );
initConfigVar( ConfigFile, "ClientLimit", MaxNbClients, MAX_NB_CLIENTS );
installConfigVar( ConfigFile, "ClientTimeOut", cfcbClientTimeOut );
installConfigVar( ConfigFile, "LimboTimeOut", cfcbLimboTimeOut );
installConfigVar( ConfigFile, "DisplayInfo", cfcbDisplayInfo );
installConfigVar( ConfigFile, "ClientMonitor", cfcbClientMonitor );
installConfigVar( ConfigFile, "AllowBeep", cfcbAllowBeep );
installConfigVar( ConfigFile, "GameCycleRatio", cfcbGameCycleRatio );
installConfigVar( ConfigFile, "CalcDistanceExecutionPeriod", cfcbCalcDistanceExecutionPeriod );
installConfigVar( ConfigFile, "SortPrioExecutionPeriod", cfcbSortPrioExecutionPeriod );
installConfigVar( ConfigFile, "DistanceDeltaRatioForPos", cfcbDistanceDeltaRatioForPos );
/*installConfigVar( ConfigFile, "PositionPrioExecutionPeriod", cfcbPositionPrioExecutionPeriod );
installConfigVar( ConfigFile, "OrientationPrioExecutionPeriod", cfcbOrientationPrioExecutionPeriod );
installConfigVar( ConfigFile, "DiscreetPrioExecutionPeriod", cfcbDiscreetPrioExecutionPeriod );*/
#ifdef NL_OS_WINDOWS
CConfigFile::CVar *lowerCPUPriority = ConfigFile.getVarPtr( "LowerCPUPriority" );
if ( lowerCPUPriority && (lowerCPUPriority->asInt() == 1) )
{
SetPriorityClass( GetCurrentProcess(), /*BELOW_NORMAL_PRIORITY_CLASS*/ 0x00004000 ); // not the constant because I don't have the latest version of the Platform SDK!
nlinfo( "Starting with LowerCPUPriority" );
}
#endif
CSheetId::init( false );
// The filename is used with george's sheets to know which properties correspond to the entity types
// nlinfo( "Loading georges forms..." );
//CFrontEndPropertyReceiver::init( string("single"), &PrioSub.PropTranslator, &_ReceiveSub.EntityToClient );
nlinfo( "Initializing entity container and mirror..." );
_EntityContainer.init( &_ReceiveSub.EntityToClient, cbUpdate );
// Init the login system
nlinfo( "Initializing login subsystem..." );
CLoginServer::init( "", cbDisconnectClient );
// // Init front end listening port
CInetAddress listenAddr(CLoginServer::getListenAddress());
uint16 frontendPort = listenAddr.port();
if (frontendPort == 0)
{
// set a default listen port
frontendPort = 47851;
}
// if (IService::getInstance()->haveArg('p'))
// {
// // use the command line param if set
// frontendPort = atoi(IService::getInstance()->getArg('p').c_str());
// }
// else
// {
// // use the config file param otherwise
// frontendPort = ConfigFile.getVar( "FrontendPort" ).asInt();
// }
CConfigFile::CVar *plafp = ConfigFile.getVarPtr( "LastAcceptableFSUDPPort" );
uint16 lastAcceptableFrontendPort = frontendPort + 10; // default: try up to 10 ports
if ( plafp )
{
if ( plafp->asInt() >= frontendPort )
lastAcceptableFrontendPort = plafp->asInt();
else
nlwarning( "Invalid LastAcceptableFSUDPPort: %u (port from ListenAddress: %hu); using %hu", plafp->asInt(), frontendPort, lastAcceptableFrontendPort );
}
// Initialize the receiving subsystem and find an available port
_DgramLength = ConfigFile.getVar( "DatagramLength" ).asInt();
nlinfo( "\tDatagramLength = %u bytes", _DgramLength );
nlinfo( "Initializing receiving subsystem..." );
_ReceiveSub.init( frontendPort, lastAcceptableFrontendPort, _DgramLength, &_History, &_SendSub.clientIdCont() );
frontendPort = _ReceiveSub.dataSock()->localAddr().port();
listenAddr.setPort( frontendPort );
CLoginServer::setListenAddress( PublishFSHostAsIP.get() ? listenAddr.asIPString() : (listenAddr.hostName() + ":" + NLMISC::toString( listenAddr.port() )) ); // note: asString() returns more information
CInetAddress::RetrieveNames = false;
StalledMode = false;
LastTickTime = 0;
ShardDown = true; // waiting for connection of the EGS
CUnifiedNetwork::getInstance()->setServiceUpCallback( "*", cbServiceUp, NULL );
CUnifiedNetwork::getInstance()->setServiceDownCallback( string("*"), cbServiceDown, 0);
SelfServiceId = getServiceId();
std::string patchAddress = getPatchingAddress();
nlinfo("Patch Server base address is '%s'", patchAddress.c_str());
// set accept mode
AcceptClients = AcceptClientsAtStartup.get();
if (!AcceptClients)
{
nlinfo("FS doesn't accept client at startup, must be told to do so (default patching mode)");
NLMISC::ICommand::execute("startWebPatchServer", *InfoLog);
}
else
{
nlinfo("FS accepts client at startup (patching mode unavailable)");
NLMISC::ICommand::execute("stopWebPatchServer", *InfoLog);
}
// Register actions
CActionFactory::getInstance()->registerAction( ACTION_POSITION_CODE, CActionPosition::create );
CActionFactory::getInstance()->registerAction( ACTION_SYNC_CODE, CActionSync::create );
CActionFactory::getInstance()->registerAction( ACTION_DISCONNECTION_CODE, CActionDisconnection::create );
CActionFactory::getInstance()->registerAction( ACTION_ASSOCIATION_CODE, CActionAssociation::create );
CActionFactory::getInstance()->registerAction( ACTION_LOGIN_CODE, CActionLogin::create );
CActionFactory::getInstance()->registerAction( ACTION_GENERIC_CODE, CActionGeneric::create );
CActionFactory::getInstance()->registerAction( ACTION_GENERIC_MULTI_PART_CODE, CActionGenericMultiPart::create );
CActionFactory::getInstance()->registerAction( ACTION_SINT64, CActionSint64::create );
CActionFactory::getInstance()->registerAction( ACTION_TARGET_SLOT_CODE, CActionTargetSlot::create );
//#ifdef DISABLE_PRIOTABLE
CActionFactory::getInstance()->registerAction( ACTION_DUMMY_CODE, CActionDummy::create );
//#endif
// Init send subsystem
nlinfo( "Initializing sending subsystem..." );
#ifdef HALF_FREQUENCY_SENDING_TO_CLIENT
nlinfo( " Half-frequency mode" );
#else
nlinfo( " Full-frequency mode" );
#endif
_SendSub.init( _ReceiveSub.dataSock(), &_ReceiveSub.clientMap(), &_History, &PrioSub );
installConfigVar( ConfigFile, "ClientBandwidth", cfcbClientBandwidth );
installConfigVar( ConfigFile, "TotalBandwidth", cfcbTotalBandwidth );
// Init history
nlinfo( "Initializing history..." );
_History.init( MaxNbClients+1 ); // clientids begin at 1
// Init priority table
nlinfo( "Initializing priority tables..." );
PrioSub.init( /*&_SendSub.clientIdCont()*/ &_History, &_ReceiveSub.EntityToClient );
installConfigVar( ConfigFile, "PriorityMode", cfcbPriorityMode );
// Register property nbbits
CActionSint64::registerNumericPropertiesRyzom();
CActionFactory::getInstance()->initVolatileProperties();
setUpdateTimeout(100);
// Init the XML message manager
nlinfo( "Initializing XML message manager..." );
const string& pathXmlMsg = CPath::lookup( "msg.xml" );
GenericXmlMsgHeaderMngr.init( pathXmlMsg );
initImpulsionId();
initImpulsionUid();
// Init module manager
nlinfo( "Initializing module manager..." );
initModuleManagers();
if (UseSendThread)
{
// Init send thread
nlinfo("UseSendThread on, initialise send thread");
SendThread = IThread::create(&SendTask);
SendThread->start();
}
// add a callback in the LoginServer to be warned when a cookie become acceptable
CLoginServer::addNewCookieCallback(newCookieCallback);
nlinfo( "Waiting for the local Mirror Service..." );
CActionGeneric::ServerSide = true;
}
catch ( Exception& e )
{
nlerror( "Error: %s", e.what() );
}
}
/*
* After mirror system is ready
*/
void CFrontEndService::postInit()
{
nlinfo( "Subscribing to mirror properties..." );
_EntityContainer.initMirror();
// Init modules
nlinfo( "Starting modules..." );
//CModuleManager::startAll();
// Init impulse encoder callbacks
CImpulseEncoder::setReceivedCallback(cbAckUnknown, -1);
CImpulseEncoder::setReceivedCallback(cbAckDummy, ACTION_DUMMY_CODE);
// and the remaining ones...
setSimlagValues (ConfigFile.getVar("Lag").asInt(), ConfigFile.getVar("PacketLoss").asInt(), ConfigFile.getVar("PacketDuplication").asInt(), ConfigFile.getVar("PacketDisordering").asInt());
}
/**************************
* RELEASE *
**************************/
/*
*
*/
void CFrontEndService::release()
{
SendTask.StopThread = true;
_ReceiveSub.release();
//CModuleManager::stopAll();
//
//uint i;
//for (i=0; i<_ModuleManagers.size(); ++i)
// delete _ModuleManagers[i];
//_ModuleManagers.clear();
//CModuleManager::release();
CActionFactory::release();
InfoLog->removeFilter( "FEHTIMER" );
InfoLog->removeFilter( "FE" );
if (SendThread != NULL)
{
nlinfo("Release send thread, waiting for task to terminate");
// stop send thread
while (SendTask.StopThread)
nlSleep(1);
delete SendThread;
SendThread = NULL;
}
}
/**************************
* UPDATE *
**************************/
//#define LOOP_IN_MAIN_THREAD
//#define TEST_THREAD_CPU_USAGE
// This variable helps testing the bug that produced the warning
// "handleReceivedMsg : FERECV: client %d sent messages dated in future"
// after a Stall Mode recovery.
//CVariable<bool> SimulateStalled("fs", "SimulateStalled", "", false );
/*
* Update
*/
bool CFrontEndService::update()
{
#ifdef LOOP_IN_MAIN_THREAD
while ( true );
#endif
#ifdef TEST_THREAD_CPU_USAGE
double sum=0.0;
uint32 n = 0;
while ( true )
{
++n;
TTicks ticks = CTime::getPerformanceTime();
uint32 k;
for ( uint32 i=0; i!=0x10000000; ++i )
{
k=i*2;
}
double t = CTime::ticksToSecond( CTime::getPerformanceTime()-ticks );
sum += t;
nlinfo( "Time: %.3f ms, average: %.3f ms, k=%u", t*1000.0, 1000.0*sum/(double)n, k );
}
#endif
/*
map<TUid,CLimboClient>::iterator it;
TTime timeout = CTime::getLocalTime()-_LimboTimeOut;
for (it=_ReceiveSub.LimboClients.begin(); it!=_ReceiveSub.LimboClients.end(); )
{
map<TUid,CLimboClient>::iterator itr = it++;
// removes limbo client if it timed out
if ((*it).second.Timeout < timeout)
_ReceiveSub.LimboClients.erase(itr);
}
*/
// If the back-end is down, set all clients to "server down" state
// (this breaks the tick synchronisation of the clients, anyway the clients disconnect after receiving "server down")
if ( !DontNeedBackend && ShardDown )
{
static TTime lastSent = CTime::getLocalTime();
TTime now = CTime::getLocalTime();
if ( now - lastSent > 2000 )
{
sendServerProblemStateToClients( CClientHost::ServerDown );
lastSent = now;
}
}
// If not received a tick for 2 seconds, set all clients to stalled state
// (this breaks the tick synchronisation of the clients, they will need a SYNC afterwards)
if ((CTime::getLocalTime() - LastTickTime > 2000) /*|| (SimulateStalled.get() == 1)*/)
{
if (!StalledMode)
{
nlinfo( "Entering STALLED mode" );
StalledMode = true;
LastStallTime = 0;
}
if ((CTime::getLocalTime() - LastStallTime > 1000) /*|| (SimulateStalled.get() == 1)*/)
{
LastStallTime = CTime::getLocalTime();
sendServerProblemStateToClients( CClientHost::Stalled );
}
}
// update the pending user list
CLoginServer::refreshPendingList();
// Display statistics
CycleWatch.stop();
static TTime lastdisplay = CTime::getLocalTime();
if ( VerboseFEStatsTime.get() && (CTime::getLocalTime() - lastdisplay > 1000) )
{
TMsDuration cyclepartialaverage = CycleWatch.getPartialAverage();
nlinfo( "FETIME: Time in ms: Receive=%u Send=%u UserLoop=%u Cycle=%u (%.1f cps)",
ReceiveWatch.getPartialAverage(), SendWatch.getPartialAverage(), UserDurationPAverage,
cyclepartialaverage, 1000.0f/(float)cyclepartialaverage );
lastdisplay = CTime::getLocalTime();
}
CycleWatch.start();
uint32 now = CTime::getSecondsSince1970();
bool noRecentComm = now - CFEReceiveTask::LastUDPPacketReceived > DelayBeforeUPDAlert;
// check for potential communication problem
if (CLoginServer::getNbPendingUsers() != 0
|| this->_ReceiveSub.getNbClient() != 0)
{
if (noRecentComm)
{
// raise the alert for a limited time
addStatusTag("CheckUDPComm");
}
}
if (!noRecentComm)
{
// clear the UDP alert tag (if set)
removeStatusTag("CheckUDPComm");
}
return true;
}
/*
* Add an impulse to a specific client
*/
void CFrontEndService::addImpulseToClient(TClientId client, CActionImpulsion *action, uint level)
{
TClientIdCont &cont = _ReceiveSub.clientIdCont();
if (client >= cont.size() || cont[client] == NULL)
{
nlwarning ("Can't send impulse to client %d (doesn't exist)", client);
return;
}
cont[client]->ImpulseEncoder.add(action, level);
}
/*
* Add an impulse to a specific entity provided it is a client
*/
void CFrontEndService::addImpulseToEntity( const TEntityIndex& entity, CActionImpulsion *action, uint level )
{
TClientId client = _ReceiveSub.EntityToClient.getClientId( entity );
if (client != INVALID_CLIENT)
{
addImpulseToClient(client, action, level);
}
else
{
nlwarning ("Can't send impulse to E%u (doesn't exist or not a client)", entity.getIndex());
return;
}
}
/*
* Remove clients that do not send datagrams anymore
*/
void CFrontEndService::updateClientsStates()
{
TTime ctime = CTime::getLocalTime();
THostMap::iterator iclient, icremove;
for ( iclient=_ReceiveSub.clientMap().begin(); iclient!=_ReceiveSub.clientMap().end(); )
{
CClientHost *client = GETCLIENTA(iclient);
// Check if receive time is not too old
TTime cltime = ctime - client->receiveTime();
/*
// TEMP BEN
CActionDummy *dummy = (CActionDummy*)(CActionFactory::getInstance()->create(ACTION_DUMMY_CODE));
dummy->Dummy1 = ++(client->LastSentDummy);
addImpulseToClient(client->clientId(), dummy, 1);
// TEMP BEN
*/
switch (client->ConnectionState)
{
default:
if (cltime > _ClientLagTime)
{
//nlwarning( "Client %u lags (no incoming data for %u ms), setting probe mode", GETCLIENTA(iclient)->clientId(), _ClientLagTime );
client->setProbeState();
}
else
{
++iclient;
}
break;
case CClientHost::Probe:
if ( cltime > _ClientTimeOut )
{
nlinfo( "Client %u %s seems dead (no incoming data for %u ms)", GETCLIENTA(iclient)->clientId(), GETCLIENTA(iclient)->address().asString().c_str(), _ClientTimeOut );
icremove = iclient;
++iclient;
_ReceiveSub.removeFromRemoveList( GETCLIENTA(icremove)->clientId() );
_ReceiveSub.removeClientById( GETCLIENTA(icremove)->clientId() );
}
else
{
++iclient;
}
break;
}
}
}
/*
* Set clients to stalled or "server down" mode (and send stalled msg immediately)
*/
void CFrontEndService::sendServerProblemStateToClients( uint connectionState )
{
uint8 systemMsgCode;
switch ( connectionState )
{
case CClientHost::ServerDown:
systemMsgCode = SYSTEM_SERVER_DOWN_CODE;
break;
case CClientHost::Stalled:
systemMsgCode = SYSTEM_STALLED_CODE;
break;
default:
nlstop;
}
//nldebug( "Sending %s to clients", SystemMessagesNames[systemMsgCode] );
//uint numClients = 0;
THostMap::iterator iclient;
for ( iclient=_ReceiveSub.clientMap().begin(); iclient!=_ReceiveSub.clientMap().end(); ++iclient )
{
// Send the stalled or server down code. Note: client->setupSystemHeader() calls getNextSendNumber().
// If this is called more than once per tick (or less), the client's CurrentServerTick will get shifted,
// leading to the warning "handleReceivedMsg : FERECV: client %d sent messages dated in future".
// To avoid this, the FS *must* resynchronize the clients when exiting from stalled mode
// (see setClientsToSynchronizeState()).
CClientHost *client = GETCLIENTA(iclient);
client->ConnectionState = connectionState;
_SendSub.enableSendBuffer( client->clientId() );
TOutBox& outbox = _SendSub.outBox( client->clientId() );
outbox.resetBufPos();
client->setupSystemHeader( outbox, systemMsgCode );
//outbox.displayStream(toString("STALLED:displayOutbox for %u:", client->clientId()).c_str());
//++numClients;
}
swapSendBuffers(); // waits for the end of the previous background flushing
flushMessagesToSend(); // flushes (blocking operation in the main thread)
//nldebug( "Sent %s to %u clients", SystemMessagesNames[systemMsgCode], numClients );
}
/*
* Set clients to synchronize state
*/
void CFrontEndService::setClientsToSynchronizeState()
{
nlinfo( "Leaving STALLED mode" );
StalledMode = false;
THostMap::iterator iclient;
for ( iclient=_ReceiveSub.clientMap().begin(); iclient!=_ReceiveSub.clientMap().end(); ++iclient )
{
CClientHost *client = GETCLIENTA(iclient);
// Set to Force Synchronize state to ensure an ack_sync received from client
// will not overwrite the state with Connected
client->setForceSynchronizeState();
}
}
void CFrontEndService::newCookieCallback(const NLNET::CLoginCookie &cookie)
{
// update the last UPD packet date
if (CFEReceiveTask::LastUDPPacketReceived == 0)
{
// set the date to 'now'. If no UPD traffic is detected after
// a predetermined timer, an alert is set in the service status line.
CFEReceiveTask::LastUDPPacketReceived = CTime::getSecondsSince1970();
}
}
/*
*
*/
NLMISC_DYNVARIABLE( bool, StalledMode, "true if no tick for 2 seconds" )
{
if ( get )
*pointer = CFrontEndService::instance()->StalledMode;
}
NLMISC_DYNVARIABLE( uint32, UserTime, "User duration partial average" )
{
if ( get )
*pointer = CFrontEndService::instance()->UserDurationPAverage;
}
NLMISC_DYNVARIABLE( uint32, SentActions, "User duration partial average" )
{
if ( get )
*pointer = CFrontEndService::instance()->SentActionsLastCycle;
}
bool Stats = false;
// This assumes the negative filter "FESTATS" is in the config file
NLMISC_COMMAND( switchStats, "Switch stats", "" )
{
Stats = ! Stats;
if ( Stats )
InfoLog->removeFilter( "FESTATS" );
else
InfoLog->addNegativeFilter( "FESTATS" );
return true;
}
NLMISC_COMMAND( monitorClient, "Set the client id to monitor", "<clientid>" )
{
if (args.size() != 1) return false;
TClientId clientid = atoi(args[0].c_str());
if ( clientid <= MAX_NB_CLIENTS )
CFrontEndService::instance()->monitorClient( clientid );
return true;
}
NLMISC_COMMAND( disconnectClient, "Disconnect a client", "<clientid>" )
{
if (args.size() != 1) return false;
TClientId clientid = atoi(args[0].c_str());
CClientHost *clienthost;
if ( (clientid <= MaxNbClients) && ((clienthost = CFrontEndService::instance()->sendSub()->clientIdCont()[clientid]) != NULL) )
{
cbDisconnectClient( clienthost->Uid, "FS user command" );
}
else
{
log.displayNL( "There is no such a client id" );
}
return true;
}
NLMISC_COMMAND( verboseImpulsions, "Turn on/off or check the state of verbose logging of impulsions", "" )
{
if ( args.size() == 1 )
{
if ( args[0] == string("on") || args[0] == string("1") )
verboseImpulsions=true;
else if ( args[0] == string("off") || args[0] == string("0") )
verboseImpulsions=false;
}
log.displayNL( "verboseImpulsions is %s", verboseImpulsions ? "on" : "off" );
return true;
}
NLMISC_COMMAND( getTargetPosAtTick, "Get the last target entity position that was sent to a client at a specified tick in the past", "<clientId> <tick>" )
{
if ( args.size() < 2 )
return false;
TClientId clientId = atoi(args[0].c_str());
NLMISC::TGameCycle tick = atoi(args[1].c_str());
// Search
bool found = false;
TCoord x,y;
if ( (clientId != INVALID_CLIENT) && (clientId <= MAX_NB_CLIENTS) )
{
CFrontEndService::instance()->history()->getTargetPosAtTick( clientId, tick, x, y );
log.displayNL( "Position of target of C%hu was %d %d", clientId, x, y );
}
else
{
log.displayNL( "Invalid client id" );
}
return true;
}
class CImpulseStatPred
{
public:
typedef std::pair<float, CClientHost*> TItem;
bool operator () (const TItem& a, const TItem& b) const
{
return a.first < b.first;
}
};
NLMISC_COMMAND( dumpImpulseStats, "Dump Impulse stat to XML log", "<logfile> [[-]<num> [efficiency|queue]]")
{
if (args.size() < 1)
return false;
sint maxdump = -1;
if (args.size() >= 2)
maxdump = abs(atoi(args[1].c_str()));
bool reverse = (args.size() >= 2 && args[1][0] == '-');
std::string criterion;
if (args.size() >= 3)
criterion = args[2];
uint ucriterion = 0;
if (criterion == "efficiency")
ucriterion = 1;
if (criterion == "queue")
ucriterion = 2;
std::vector<std::pair<float, CClientHost*> > result;
THostMap& clientmap = CFrontEndService::instance()->receiveSub()->clientMap();
for (THostMap::iterator it = clientmap.begin (); it != clientmap.end (); it++)
{
CClientHost* client = GETCLIENTA(it);
float comp = 0.0f;
if (ucriterion == 1)
{
comp = client->ImpulseEncoder.leastEfficiencyRatio();
}
else if (ucriterion == 2)
{
comp = -(float)client->ImpulseEncoder.biggestQueueSize();
}
if (reverse)
comp = -comp;
result.push_back(std::make_pair<float, CClientHost*>(comp, client));
}
if (ucriterion != 0 && !result.empty())
{
std::sort(result.begin(), result.end(), CImpulseStatPred());
}
std::string filename = args[0];
COFile file;
COXml xml;
if (!file.open(filename) || !xml.init(&file))
return false;
xml.xmlPush("ImpulseDump");
uint num;
for (num=0; num<result.size() && (maxdump <= 0 || num < uint(maxdump)); ++num)
{
CClientHost* client = result[num].second;
client->ImpulseEncoder.dump(xml);
}
xml.xmlPop();
return true;
}
/*
* Patching setup
* Apache start/stop commands
*/
// Start Apache server
NLMISC_COMMAND( startWebPatchServer, "start Web server for patching", "")
{
if (!UseWebPatchServer.get())
return true;
nlinfo("Execute startWebPatchServer...");
if (!StartWebServerSysCommand.get().empty())
{
system(StartWebServerSysCommand.get().c_str());
}
return true;
}
// Stop Apache server
NLMISC_COMMAND( stopWebPatchServer, "stop Web server for patching", "")
{
if (!UseWebPatchServer.get())
return true;
nlinfo("Execute stopWebPatchServer...");
if (!StopWebServerSysCommand.get().empty())
{
system(StopWebServerSysCommand.get().c_str());
}
return true;
}
// Stop Apache server
NLMISC_COMMAND( acceptClients, "tells manually frontend to accept clients", "")
{
setAcceptClients();
return true;
}
NLMISC_CLASS_COMMAND_IMPL(CFrontEndService, dump)
{
if (args.size() != 0)
return false;
log.displayNL("Frontend internal state :");
log.displayNL("Listen address: %s", CLoginServer::getListenAddress().c_str() );
log.displayNL("UDP sock listening on %s", _ReceiveSub.dataSock()->localAddr().asString().c_str() );
return true;
}
/*
* Declare a service with the class CFrontEndService, the names "FS" (short) and "frontend_service" (long).
* The port is set to 37000 and the main callback array is CallbackArray.
* Note: this is the port towards the other services of the shard (TCP communication).
*/
NLNET_SERVICE_MAIN( CFrontEndService, "FS", "frontend_service", 0, cbFrontEndArray, "", "" )
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