c - Linux socket-他们断开了连接还是我们断开了连接？

Question

我正在通过 ::recv() 接收字节，并有一个返回零的场景。根据这里:

http://www.tutorialspoint.com/unix_system_calls/recv.htm

这意味着:

The return value will be 0 when the peer has performed an orderly shutdown.

有没有什么办法可以查出是哪一侧的连接关闭了呢？我不知道是远程客户端终止了我们的连接，还是我们这边的某些逻辑关闭了它。

Answer 1

Is there any way to find out which side of the connection closed it?

同行关闭了它。另一边。

I do not know whether the remote client killed our connection, or some logic on our side closed it.

是的，你知道。同行关闭了它。如果你关闭了它，你会得到一个错误 EBADF。