TCP与UDP是工作在传输层的两个核心协议,为应用层提供会话和数据报通信服务。TCP提供一对一的、面向连接的可靠通信服务。TCP建立连接,对发送的数据包进排序和确认,并恢复在传输过程中丢失的数据包。UDP提供一对一或一对多的、无连接的不可靠通信服务。如果要传输的数据量很少( TCP and UDP are two core protocols working at the transport layer, providing session and datagram communication services for the application layer. TCP provides one-to-one, connection-oriented and reliable communication services. TCP establishes a connection, sorts and confirms sent data packets, and restores lost data packets during transmission. UDP provides one-to-one or one-to-many, connectionless unreliable communication services. If you want to transfer a small amount of data