//
//finds the highest socket number and sets the rset and wset bits
//from our list of clients and our listening socket.
//
int
SimpleServer::getMaxFD()
{
int imax = m_sListen;
ServerSocket* s;
FD_ZERO(&m_wset);
FD_ZERO(&m_rset);
if(!m_bUsingThread)
{
//when we are using threads, this simple server object is only
//paying attention to one socket. Other simple server objects
//will pay attention to other sockets. Listen socket is taken
//care of in the manager.
FD_SET(m_sListen,&m_rset); //select on listening socket
}
for(s = m_listClients.getHead(); s; s = m_listClients.getNext())
{
FD_SET(*s,&m_rset); //select for readability
if(s->getOutBufferSize())
FD_SET(*s,&m_wset); //need to send data out, select for writability
if((int)(*s) > imax)
imax = *s;
}
return imax;
}
