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Top Forums Programming logic understanding for inter client chat server Post 302534756 by DGPickett on Tuesday 28th of June 2011 04:25:12 PM
Old 06-28-2011
It sounds like a matter of filtering, or spinning off another chat from the first for n members. It is a subset of the same chat, probably in a forked off child that removes excess persons. However, you either need now connections/sockets or some session ID code for the new session spun off. The client needs a new window for each included user's screen, the screen needs some sort of title for identification, and the server needs to support a new session, by multiplexing or new connections on a new port and server instance. I would think one server juggling many sessions would be good. Is it tcp or UDP or ???
UDP Broadcast and MBone Multicast would be really cool, as everyone but the author gets every message, but for a CS not peer system, TCP is probably in use. You could multiplex the existing TCP connection using session codes and let the new screen get the data from the old screen using some IPC until the old screen is ended, then take over the same connection socket. If there are three sessions, and session 1 dies, session 2 needs to feed 3, but if 2 dies, 1 still needs to feed 3. Memory mapped files are a really neat IPC, btw! RAM/Cache speeds and no O/S overhead.

Last edited by DGPickett; 06-28-2011 at 05:30 PM..
 

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socket.h(3)						     Library Functions Manual						       socket.h(3)

NAME
socket.h - Network addresses and sockets related classes. SYNOPSIS
#include <cc++/address.h> Classes class ost::Socket The Socket is used as the base for all Internet protocol services under Common C++. class ost::DCCPSocket DCCP sockets are used for stream based connected sessions between two sockets. class ost::UDPSocket UDP sockets implement the TCP SOCK_DGRAM UDP protocol. class ost::UDPBroadcast Representing a UDP socket used for subnet broadcasts, this class provides an alternate binding and setPeer() capability for UDP sockets. class ost::UDPTransmit Representing half of a two-way UDP connection, the UDP transmitter can broadcast data to another selected peer host or to an entire subnet. class ost::UDPReceive Representing half of a two-way UDP connection, the UDP receiver can receive data from another peer host or subnet. class ost::UDPDuplex UDP duplex connections impliment a bi-directional point-to-point UDP session between two peer hosts. class ost::TCPSocket TCP sockets are used for stream based connected sessions between two sockets. class ost::TCPV6Socket TCPV6 sockets are used for stream based connected sessions between two ipv6 sockets. class ost::TCPStream TCP streams are used to represent TCP client connections to a server by TCP protocol servers for accepting client connections. class ost::TCPSession The TCP session is used to primarily to represent a client connection that can be managed on a separate thread. class ost::SimpleTCPStream Simple TCP Stream, to be used with Common C++ Library. Namespaces namespace ost Macros #define INVALID_SOCKET -1 #define _IOLEN64 #define _IORET64 #define MSG_DONTWAIT 0 #define MSG_NOSIGNAL 0 #define SOCK_DCCP 6 #define IPPROTO_DCCP 33 #define SOL_DCCP 269 #define DCCP_SOCKOPT_AVAILABLE_CCIDS 12 #define DCCP_SOCKOPT_CCID 13 #define DCCP_SOCKOPT_TX_CCID 14 #define DCCP_SOCKOPT_RX_CCID 15 Typedefs typedef int SOCKET Variables class __EXPORT ost::SimpleTCPStream Detailed Description Network addresses and sockets related classes. Macro Definition Documentation #define _IOLEN64 Referenced by ost::SocketPort::peek(), ost::UDPSocket::peek(), ost::TCPStream::peek(), ost::SocketPort::receive(), ost::UDPReceive::receive(), ost::SocketPort::send(), ost::UDPTransmit::send(), and ost::UDPTransmit::transmit(). #define _IORET64 #define DCCP_SOCKOPT_AVAILABLE_CCIDS 12 #define DCCP_SOCKOPT_CCID 13 #define DCCP_SOCKOPT_RX_CCID 15 #define DCCP_SOCKOPT_TX_CCID 14 #define INVALID_SOCKET -1 #define IPPROTO_DCCP 33 #define MSG_DONTWAIT 0 Referenced by ost::UDPTransmit::transmit(). #define MSG_NOSIGNAL 0 Referenced by ost::UDPTransmit::send(), and ost::UDPTransmit::transmit(). #define SOCK_DCCP 6 #define SOL_DCCP 269 Typedef Documentation typedef int SOCKET Author Generated automatically by Doxygen for GNU CommonC++ from the source code. GNU CommonC++ Sat Jun 23 2012 socket.h(3)
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