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/*
* Copyright (C) 2007-2008 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/itoserver.h"
#include <errno.h>
#include "bu/serversocket.h"
#include "bu/client.h"
#include "bu/socket.h"
#include "osx_compatibility.h"
Bu::ItoServer::ItoServer() :
nTimeoutSec( 1 ),
nTimeoutUSec( 0 )
{
FD_ZERO( &fdActive );
}
Bu::ItoServer::~ItoServer()
{
while( !qClientCleanup.isEmpty() )
{
ItoClient *pCli = qClientCleanup.dequeue();
pCli->join();
delete pCli;
}
// TODO: Make sure here that each client has shutdown it's socket, and
// maybe even written any extra data, we could put a timelimit on this...
// anyway, it's not as clean as it could be right now.
for( ClientHash::iterator i = hClients.begin(); i != hClients.end(); i++ )
{
ItoClient *pCli = (*i);
pCli->join();
delete pCli;
}
}
void Bu::ItoServer::addPort( int nPort, int nPoolSize )
{
ServerSocket *s = new ServerSocket( nPort, nPoolSize );
int nSocket = s->getSocket();
FD_SET( nSocket, &fdActive );
hServers.insert( nSocket, s );
}
void Bu::ItoServer::addPort( const FString &sAddr, int nPort, int nPoolSize )
{
ServerSocket *s = new ServerSocket( sAddr, nPort, nPoolSize );
int nSocket = s->getSocket();
FD_SET( nSocket, &fdActive );
hServers.insert( nSocket, s );
}
void Bu::ItoServer::setTimeout( int nTimeoutSec, int nTimeoutUSec )
{
this->nTimeoutSec = nTimeoutSec;
this->nTimeoutUSec = nTimeoutUSec;
}
void Bu::ItoServer::addClient( int nSocket, int nPort )
{
ItoClient *pC = new ItoClient( *this, nSocket, nPort, nTimeoutSec,
nTimeoutUSec );
imClients.lock();
hClients.insert( nSocket, pC );
imClients.unlock();
pC->start();
}
void *Bu::ItoServer::run()
{
for(;;)
{
struct timeval xTimeout = { nTimeoutSec, nTimeoutUSec };
fd_set fdRead = fdActive;
fd_set fdWrite = fdActive;
fd_set fdException = fdActive;
if( TEMP_FAILURE_RETRY( select( FD_SETSIZE, &fdRead, NULL, &fdException, &xTimeout ) ) < 0 )
{
throw ExceptionBase("Error attempting to scan open connections.");
}
for( ServerHash::iterator i = hServers.begin(); i != hServers.end(); i++ )
{
if( FD_ISSET( i.getKey(), &fdRead ) )
{
ServerSocket *pSrv = i.getValue();
addClient( pSrv->accept(), pSrv->getPort() );
}
}
while( !qClientCleanup.isEmpty() )
{
ItoClient *pCli = qClientCleanup.dequeue();
pCli->join();
delete pCli;
}
}
return NULL;
}
void Bu::ItoServer::clientCleanup( int iSocket )
{
imClients.lock();
ItoClient *pCli = hClients.get( iSocket );
imClients.unlock();
qClientCleanup.enqueue( pCli );
}
Bu::ItoServer::ItoClient::ItoClient( ItoServer &rSrv, int iSocket, int iPort,
int nTimeoutSec, int nTimeoutUSec ) :
rSrv( rSrv ),
iSocket( iSocket ),
iPort( iPort ),
nTimeoutSec( nTimeoutSec ),
nTimeoutUSec( nTimeoutUSec )
{
FD_ZERO( &fdActive );
FD_SET( iSocket, &fdActive );
pClient = new Client(
new Bu::Socket( iSocket ),
new SrvClientLinkFactory( rSrv )
);
}
Bu::ItoServer::ItoClient::~ItoClient()
{
}
void *Bu::ItoServer::ItoClient::run()
{
imProto.lock();
rSrv.onNewConnection( pClient, iPort );
pClient->processOutput();
imProto.unlock();
for(;;)
{
struct timeval xTimeout = { nTimeoutSec, nTimeoutUSec };
fd_set fdRead = fdActive;
fd_set fdException = fdActive;
if( TEMP_FAILURE_RETRY( select( FD_SETSIZE, &fdRead, NULL, &fdException, &xTimeout ) ) < 0 )
{
throw ExceptionBase("Error attempting to scan open connections.");
}
while( !qMsg.isEmpty() )
{
imProto.lock();
Bu::FString *pMsg = qMsg.dequeue();
pClient->onMessage( *pMsg );
delete pMsg;
pClient->processOutput();
imProto.unlock();
}
if( FD_ISSET( iSocket, &fdRead ) )
{
imProto.lock();
pClient->processInput();
imProto.unlock();
if( !pClient->isOpen() )
{
imProto.lock();
rSrv.onClosedConnection( pClient );
imProto.unlock();
rSrv.clientCleanup( iSocket );
return NULL;
}
}
// Now we just try to write all the pending data on the socket.
// this could be done better eventually, if we care about the socket
// wanting to accept writes (using a select).
imProto.lock();
pClient->processOutput();
imProto.unlock();
}
return NULL;
}
Bu::ItoServer::SrvClientLink::SrvClientLink( ItoClient *pClient ) :
pClient( pClient )
{
}
Bu::ItoServer::SrvClientLink::~SrvClientLink()
{
}
void Bu::ItoServer::SrvClientLink::sendMessage( const Bu::FString &sMsg )
{
if( !pClient->imProto.trylock() )
{
pClient->pClient->onMessage( sMsg );
pClient->pClient->processOutput();
pClient->imProto.unlock();
}
else
{
Bu::FString *pMsg = new Bu::FString( sMsg );
pClient->qMsg.enqueue( pMsg );
}
}
Bu::ItoServer::SrvClientLinkFactory::SrvClientLinkFactory(
Bu::ItoServer &rSrv ) :
rSrv( rSrv )
{
}
Bu::ItoServer::SrvClientLinkFactory::~SrvClientLinkFactory()
{
}
Bu::ClientLink *Bu::ItoServer::SrvClientLinkFactory::createLink(
Bu::Client *pClient )
{
rSrv.imClients.lock();
ItoClient *pCli = rSrv.hClients.get( *pClient->getSocket() );
rSrv.imClients.unlock();
return new SrvClientLink( pCli );
}
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