Solved.
It's not nginx's problem.
It's protocol stack. Especially on windows os.
I found that client(windows os) did not reply ACK timely. It always sent a
ACK after received lots of packets which cause the nginx proxy do not send
packets uniformly.
Then I used another linux pc to act as client.
Hi All,
I tried to set proxy_buffering off in nginx.conf to avoid the buffering
time of the proxy. It was expected to work so that the proxy can immediately
transfer the response message from the server to the client.
But it did not work. Just several beginning packets are immediately
transferr
