ContentsPrefacexi1Introduction11.1Networks,Packets,andProtocols11.2AboutAddresses41.3AboutNames61.4ClientsandServers61.5WhatIsaSocket?71.6Exercises82BasicSockets92.1SocketAddresses92.2TCPSockets152.2.1TCPClient162.2.2TCPServer212.2.3InputandOutputStreams252.3UDPSockets26