nginx - What are the meanings of "Broken pipe" and "Connection reset by peer" in the error log?

Question

What are the meanings of "Broken pipe" and "Connection reset by peer" in the error log?

Answer 1

The server has disconnected, as far as crawler applications are concerned:
"Broken pipe" usually means that the frequency is too high or the network is not good;
"Connection reset by peer" is mostly due to GFW.

Answer 2

The server has disconnected your link. You can optimize the strategy for accessing the server