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/*
* Copyright (C) 2007-2019 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "bu/server.h"
#include <errno.h>
#include <unistd.h>
#include "bu/tcpserversocket.h"
#include "bu/client.h"
#include "bu/tcpsocket.h"
#include "bu/config.h"
#ifdef PROFILE_BU_SERVER
#define BU_PROFILE_START( x ) Bu::Profiler::getInstance().startEvent( x )
#define BU_PROFILE_END( x ) Bu::Profiler::getInstance().endEvent( x )
#else
#define BU_PROFILE_START( x ) (void)0
#define BU_PROFILE_END( x ) (void)0
#endif
Bu::Server::Server() :
nTimeoutSec( 0 ),
nTimeoutUSec( 0 ),
bAutoTick( false )
{
BU_PROFILE_START("server");
FD_ZERO( &fdActive );
}
Bu::Server::~Server()
{
shutdown();
BU_PROFILE_START("server");
}
void Bu::Server::addPort( int nPort, int nPoolSize )
{
TcpServerSocket *s = new TcpServerSocket( nPort, nPoolSize );
socket_t nSocket = s->getSocket();
FD_SET( nSocket, &fdActive );
hServers.insert( nSocket, s );
}
void Bu::Server::addPort( const String &sAddr, int nPort, int nPoolSize )
{
TcpServerSocket *s = new TcpServerSocket( sAddr, nPort, nPoolSize );
socket_t nSocket = s->getSocket();
FD_SET( nSocket, &fdActive );
hServers.insert( nSocket, s );
}
void Bu::Server::setTimeout( int nTimeoutSec, int nTimeoutUSec )
{
this->nTimeoutSec = nTimeoutSec;
this->nTimeoutUSec = nTimeoutUSec;
}
void Bu::Server::scan()
{
BU_PROFILE_START("scan");
struct timeval xTimeout = { nTimeoutSec, nTimeoutUSec };
fd_set fdRead = fdActive;
fd_set fdWrite /* = fdActive*/;
fd_set fdException = fdActive;
FD_ZERO( &fdWrite );
for( ClientHash::iterator i = hClients.begin(); i != hClients.end(); i++ )
{
if( (*i)->hasOutput() )
FD_SET( i.getKey(), &fdWrite );
}
if( TEMP_FAILURE_RETRY( select( FD_SETSIZE,
&fdRead, &fdWrite, &fdException, &xTimeout ) ) < 0 )
{
char buf[1024];
strerror_r( errno, buf, 1024 );
BU_PROFILE_END("scan");
throw ExceptionBase(
Bu::String("Error attempting to scan open connections: %1: %2").arg( errno ).arg( buf ).end().getStr()
);
}
for( int j = 0; j < FD_SETSIZE; j++ )
{
if( FD_ISSET( j, &fdRead ) )
{
if( hServers.has( j ) )
{
TcpServerSocket *pSrv = hServers.get( j );
addClient( pSrv->accept(), pSrv->getPort() );
}
else
{
Client *pClient = hClients.get( j );
BU_PROFILE_START("processInput");
pClient->processInput();
BU_PROFILE_END("processInput");
if( !pClient->isOpen() )
{
closeClient( j );
}
}
}
if( FD_ISSET( j, &fdWrite ) )
{
try
{
Client *pClient = hClients.get( j );
try
{
BU_PROFILE_START("processOutput");
pClient->processOutput();
BU_PROFILE_END("processOutput");
}
catch( Bu::TcpSocketException &e )
{
closeClient( j );
}
}
catch( Bu::HashException &e )
{
// Do nothing, I guess, the client is already dead...
// TODO: Someday, we may want to handle this more graceully.
}
}
}
Bu::List<int> lDelete;
// Now we just try to write all the pending data on all the sockets.
// this could be done better eventually, if we care about the socket
// wanting to accept writes (using a select).
for( ClientHash::iterator i = hClients.begin(); i != hClients.end(); i++ )
{
if( (*i)->wantsDisconnect() && !(*i)->hasOutput() )
{
lDelete.append( i.getKey() );
}
}
for( Bu::List<int>::iterator i = lDelete.begin(); i != lDelete.end(); i++ )
{
closeClient( *i );
}
if( bAutoTick )
tick();
BU_PROFILE_END("scan");
}
void Bu::Server::addClient( socket_t nSocket, int nPort )
{
BU_PROFILE_START("addClient");
FD_SET( nSocket, &fdActive );
Client *c = new Client(
new Bu::TcpSocket( nSocket ),
new SrvClientLinkFactory()
);
hClients.insert( nSocket, c );
onNewConnection( c, nPort );
BU_PROFILE_END("addClient");
}
Bu::Server::SrvClientLink::SrvClientLink( Bu::Client *pClient ) :
pClient( pClient )
{
}
Bu::Server::SrvClientLink::~SrvClientLink()
{
}
void Bu::Server::SrvClientLink::sendMessage( const Bu::String &sMsg )
{
pClient->onMessage( sMsg );
}
Bu::Server::SrvClientLinkFactory::SrvClientLinkFactory()
{
}
Bu::Server::SrvClientLinkFactory::~SrvClientLinkFactory()
{
}
Bu::ClientLink *Bu::Server::SrvClientLinkFactory::createLink(
Bu::Client *pClient )
{
return new SrvClientLink( pClient );
}
void Bu::Server::setAutoTick( bool bEnable )
{
bAutoTick = bEnable;
}
void Bu::Server::tick()
{
for( ClientHash::iterator i = hClients.begin(); i != hClients.end(); i++ )
{
(*i)->tick();
}
}
void Bu::Server::shutdown()
{
for( SrvHash::iterator i = hServers.begin(); i != hServers.end(); i++ )
{
delete *i;
}
hServers.clear();
for( ClientHash::iterator i = hClients.begin(); i != hClients.end(); i++ )
{
closeClient( i.getKey() );
}
hClients.clear();
}
void Bu::Server::closeClient( socket_t iSocket )
{
BU_PROFILE_START("closeClient");
Bu::Client *pClient = hClients.get( iSocket );
onClosedConnection( pClient );
pClient->close();
hClients.erase( iSocket );
FD_CLR( iSocket, &fdActive );
delete pClient;
BU_PROFILE_END("closeClient");
}
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