###A server to forward data between two client ####About request header #####0. wait WAIT\r\n[id(should not exceed int)]\r\n\r\n #####1. send SEND\r\n[id]\r\n[length(in byte)]\r\n[data] ####About response header #####0. active ACTV #####1. receive RCEV\r\n[length]\r\n[data]
####There should be reset command