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// BufferedSocket.cpp: implementation of the CBufferedSocket class.
//
//////////////////////////////////////////////////////////////////////
#include "IvyStdAfx.h"
#include "BufferedSocket.h"
#define BUFFER_SIZE 4096
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CBufferedSocket::CBufferedSocket()
{
separator = '\n';
buffer_size = BUFFER_SIZE;
buffer = (char*)malloc( buffer_size );
current_ptr = buffer;
connected = false;
InitializeCriticalSection( &m_CritSection );
}
CBufferedSocket::~CBufferedSocket()
{
free( buffer );
}
void CBufferedSocket::Accept(CBufferedSocket& rConnectedSocket, SOCKADDR* lpSockAddr , int* lpSockAddrLen )
{
CThreadedSocket::Accept(rConnectedSocket, lpSockAddr , lpSockAddrLen );
rConnectedSocket.connected = true;
}
void CBufferedSocket::OnReceive(int nErrorCode)
{
char *ptr_sep;
char *ptr;
size_t nb_to_read = 0;
size_t nb;
char *tmp_buf;
SOCKADDR addr;
size_t len = sizeof( addr );
/* limitation taille buffer */
nb_to_read = buffer_size - (current_ptr - buffer );
if( nb_to_read == 0 )
{
buffer_size *= 2; /* twice old size */
tmp_buf = (char*)realloc( buffer, buffer_size );
if (!tmp_buf )
{
TRACE("HandleSocket Buffer Memory Alloc Error\n");
exit(0);
}
buffer = tmp_buf;
TRACE( "Buffer Limit reached realloc new size %ld\n", buffer_size );
nb_to_read = buffer_size - (current_ptr - buffer );
}
nb = ReceiveFrom( current_ptr, nb_to_read, &addr, &len, 0/*MSG_PARTIAL*/ );
ASSERT ( memchr( current_ptr, 0, nb) == NULL );
if ( nb == SOCKET_ERROR )
{
int err = this->GetLastError();
if ( err != WSAESHUTDOWN ) // shutdown by remote side ?
TRACE("error Receive %d socket %d\n",this->GetLastError(),m_hSocket);
Close();
return;
}
if ( nb == 0 ) // shutdown by remote side ?
{
Close();
return;
}
current_ptr += nb;
ptr = buffer;
while ((ptr_sep = (char*)memchr (ptr, separator, current_ptr - ptr )))
{
*ptr_sep = '\0';
//TRACE("message %s\n", ptr );
OnReceive( ptr );
ptr = ++ptr_sep;
//ASSERT( ptr < (buffer + buffer_size) );
}
if (ptr < current_ptr )
{ /* recopie ligne incomplete au debut du buffer */
len = current_ptr - ptr;
memcpy (buffer, ptr, len );
current_ptr = buffer + len;
}
else
{
current_ptr = buffer;
}
}
void CBufferedSocket::OnReceive( char *line )
{
}
void CBufferedSocket::SetSeparator( char sep )
{
separator = sep;
}
void CBufferedSocket::OnSend( int nErrorCode )
{
ivy::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());
size_t lg = msg.length();
size_t 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 = this->GetLastError();
switch ( err ){
case WSAEWOULDBLOCK: // si la file est pleine on sort en silence !
break;
case WSAECONNABORTED: // broken pipe on sort en silence
break;
default:
TRACE("CBufferedSocket::OnWakeup error %d Sending buffer %s \n",err,msg.c_str());
break;
}
break;
}
}
} while ( !empty );
}
void CBufferedSocket::OnConnect( int nErrorCode )
{
connected = true;
StartWriter();
// TRACE("CBufferedSocket::OnConnect buffer size %d\n",buf_out.size());
}
void CBufferedSocket::Send ( const char * data )
{
//BOOL toBeSignaled;
EnterCriticalSection( &m_CritSection );
//toBeSignaled = buf_out.IsEmpty() && connected;
buf_out.push_back( ivy::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", this->GetLastError());
// }
}
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