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// BufferedSocket.cpp: implementation of the CBufferedSocket class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "BufferedSocket.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//IMPLEMENT_DYNAMIC(CBufferedSocket, CThreadedSocket)
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CBufferedSocket::CBufferedSocket()
{
separator = '\n';
ptr = buf;
connected = false;
InitializeCriticalSection( &m_CritSection );
}
CBufferedSocket::~CBufferedSocket()
{
}
void CBufferedSocket::Accept(CBufferedSocket& rConnectedSocket, SOCKADDR* lpSockAddr , int* lpSockAddrLen )
{
CThreadedSocket::Accept(rConnectedSocket, lpSockAddr , lpSockAddrLen );
rConnectedSocket.connected = true;
}
void CBufferedSocket::OnReceive(int nErrorCode)
{
char *ptr_nl;
long nb_to_read = 0;
long nb;
SOCKADDR addr;
int len = sizeof( addr );
/* limitation taille buffer */
nb_to_read = MAX_BUFFER - ( ptr - buf );
if( nb_to_read == 0 )
{
TRACE("Erreur message trop long sans LF\n");
ptr = buf;
return;
}
nb = ReceiveFrom( ptr, nb_to_read, &addr, &len, MSG_PARTIAL );
if ( nb == SOCKET_ERROR )
{
int err = GetLastError();
if ( err != WSAESHUTDOWN ) // shutdown by remote side ?
TRACE("error Receive %d socket %d\n",GetLastError(),m_hSocket);
Close();
return;
}
if ( nb == 0 ) // shutdown by remote side ?
{
Close();
return;
}
ptr += nb;
ASSERT( ptr < (buf +sizeof( buf )));
*ptr = '\0';
ptr = buf;
while( (ptr_nl = strchr( ptr, '\n' )))
{
*ptr_nl = '\0';
//TRACE("message %s\n", ptr );
OnReceive( ptr );
ptr = ++ptr_nl;
}
if ( *ptr != '\0' )
{ /* recopie ligne incomplete au debut du buffer */
strcpy( buf, ptr );
ptr = buf + strlen(buf);
}
else
{
ptr = buf;
}
}
void CBufferedSocket::OnReceive( char *line )
{
}
void CBufferedSocket::SetSeparator( char sep )
{
separator = sep;
}
void CBufferedSocket::OnWakeup()
{
string msg;
bool empty;
try
{
// on essaye de garder la section critique a l'interieur de la boucle
// pour permettre l'entrelacement avec la partie emetrice
do
{
EnterCriticalSection( &m_CritSection );
empty = buf_out.empty();
if ( !empty ) msg = buf_out.front();
LeaveCriticalSection( &m_CritSection );
//TRACE("CBufferedSocket::OnWakeup Sending buffer %s\n",msg.c_str());
if ( !empty )
{
int lg = msg.length();
CThreadedSocket::Send( msg.c_str(), lg );
EnterCriticalSection( &m_CritSection );
buf_out.pop_front();
LeaveCriticalSection( &m_CritSection );
}
} while ( !empty );
}
catch ( CThreadedSocketException* e )
{
int err = e->GetError();
if ( err == WSAEWOULDBLOCK )
{
// put back the buffer, preserving the order
//EnterCriticalSection( &m_CritSection );
//buf_out.push_front( msg);
//LeaveCriticalSection( &m_CritSection );
}
else TRACE("CBufferedSocket::OnWakeup error %d Sending buffer %s \n",err,msg);
}
}
void CBufferedSocket::OnSend( int nErrorCode )
{
OnWakeup();
}
void CBufferedSocket::OnConnect( int nErrorCode )
{
connected = true;
OnWakeup();
//TRACE("CBufferedSocket::OnConnect buffer empty %d\n",buf_out.IsEmpty());
}
void CBufferedSocket::Send ( const char * data )
{
//BOOL toBeSignaled;
EnterCriticalSection( &m_CritSection );
//toBeSignaled = buf_out.IsEmpty() && connected;
buf_out.push_back( string(data) );
LeaveCriticalSection( &m_CritSection );
//TRACE("CBufferedSocket::Send Adding buffer to send count %d\n",buf_out.size());
if ( connected )
{
// BOOL ok = WSASetEvent( m_hEvent[1] );
// if ( !ok ) TRACE( "CBufferedSocket::Send Error SetEvent %d\n", WSAGetLastError());
}
}
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