p2p chatting room

#Compile sudo gcc -o server server.c -lpthread -lm sudo gcc -o peer peer.c -lpthread

To execute ./server port ./peer server-ip server-port my-port

ex) ./server 8000 ./peer 192.168.46.15 8000 8000

==================== server command -i

peer command -r -i -j room_num -c room_name -l -m message