进程与网络的接口-套接字 口进程通过套接字( socket)发送和接收报文 口套接字类似于一扇门: 发送进程将报文推出门 令门外的运输设施(因特网)将报文送到接收进程的门口 口套接字是应用层和传输层的接口,也是应用程序和网络之 间的APT application socket application controlled by process process app developer transpo network network controlled link Internet link by os physical Application LayApplication Layer 2- 10 进程与网络的接口--套接字 进程通过套接字(socket)发送和接收报文 套接字类似于一扇门: ❖ 发送进程将报文推出门 ❖ 门外的运输设施(因特网)将报文送到接收进程的门口 套接字是应用层和传输层的接口,也是应用程序和网络之 间的API Internet controlled by OS controlled by app developer transport application physical link network process transport application physical link network process socket