IP 地址和端口号可以一起唯一标识进程 ID 吗? [英] Can an IP address and a port number together uniquely identify a process ID?

问题描述

IP 地址和端口号能否一起唯一标识进程 ID?

Can an IP address and a port number together uniquely identify a process ID?

我正在寻找一种方法来获取相应的进程 ID，给定一个 IP 地址和一个端口号，但我不确定这样的 ip/端口对是否可以唯一标识一个 pid.

I'm looking for a way to get the corresponding process ID, given an IP address and a port number, but I'm not sure whether such ip/port pairs can uniquely identify one pid.

推荐答案

不一定.如果一个进程打开/接受了一个socket，然后fork，子进程也打开了这个socket，所以IP地址和端口号被两个进程使用.

Not necessarily. If a socket is opened/accepted in a process, and it then forks, the child process also has the socket open, so the IP address and port number are used by two processes.

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