Transmission Control Protocol, defines the protocol for one host (host application) to talk to another. Layer four of the OSI/ISO model. TCP is connection oriented. Uses PAR (positive Ack with re-transmission). Treats data as a stream.(you may er

UDP通信，Windows 应用程序向子网发送广播信息，同时接受子网中任意主机发送的广播信息。-UDP traffic, Windows application, send a broadcast message to the subnet, subnet also accept any broadcast messages sent by the host.

Tcp client server communication using Java The client–server model is a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients.[1]