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// BufferedSocket.cpp: implementation of the CBufferedSocket class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "BufferedSocket.h"
#ifdef _DEBUG
#define DEBUG_NEW new(__FILE__, __LINE__)
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// 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::OnSend( int nErrorCode )
{
string msg;
bool empty;
// 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 );
if ( !empty )
{
// TRACE("CBufferedSocket::OnSend Sending buffer %s\n",msg.c_str());
int lg = msg.length();
int sent = CThreadedSocket::Send( msg.c_str(), lg );
if ( sent == lg )
{ // emission correcte on enleve le msg de la file
EnterCriticalSection( &m_CritSection );
buf_out.pop_front();
LeaveCriticalSection( &m_CritSection );
}
else
{ // erreur
int err = GetLastError();
if ( err == WSAEWOULDBLOCK ) // si la file est pleine on sort en silence !
{
}
else
TRACE("CBufferedSocket::OnWakeup error %d Sending buffer %s \n",err,msg);
break;
}
}
} while ( !empty );
}
void CBufferedSocket::OnConnect( int nErrorCode )
{
connected = true;
StartWriter();
//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 = SignalWriter();
if ( !ok ) TRACE( "CBufferedSocket::SignalWriter Error %d\n", ::GetLastError());
// }
}
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