Overview: This is a lookup chat client/server written in c++ for project 3 in Advanced Unix Programming(CSC552). It demonstrates the use of shared memory, semaphores (TODO), sockets (TCP & UDP), and signal handling (TODO). Currently the program's base functionality is in place and it is working with the max amount of clients as 10.

To use the program launch the server, and then launch a client with a username as a commandline argument. To send a message to a user type his username followed by the message.

In order to run this program the IP and well known port must be specified in SERV_ADDR and SERV_WKPORT in CSInfo.h.

Features: client communication server shared memory set up on server (without removal) local shared memory set up whenever client comes from new machine the list command will work with clients on different machines (at least on mcg and acad) local shared memory works on client commands work

Features needed: semaphore synchronization shared memory logging in msg send and rec on client removal from shared memory exiting on the server removal of shmem if last client logging off of machine x signal handler

Assigned Ports: 15080 - 15099 15275 - 15299