Master Socket listening socket" (a.k.a. a "master socket") binds it to a port and waits for a connection request. client connects to this master socket and gets a connection socket reuses this client socket for persistent connection think of it like an air traffic control you first communicate with air traffic control (master socket) to get the landing lane (client socket) but you don't land cargo (client message) at the air traffic control (master socket) Backlinks1InternetworkingComments