Comments (6)
you could use following command to check if the value in use is correct
emqx eval 'emqx_config:get_listener_conf(tcp, default, [tcp_options, keepalive], "none")'
you could also enable debug
log level , while you client connects, you should see some logs like:
2024-04-11T12:46:15.631182+02:00 [debug] msg: custom_socket_options_successfully, peername: 127.0.0.1:47138, opts: [{keepalive,true},{raw,6,4,<<5,0,0,0>>},{raw,6,5,<<12,0,0,0>>},{raw,6,6,<<3,0,0,0>>}]
if they looks ok. probably your OS/container doesn't allow setting the keep alive socket opts.
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I can confirm that my configuration was retrieved by emqx, but it doesn't work
probably your OS/container doesn't allow setting the keep alive socket opts => the docker container is emqx:5.5.1, it's official, i didn't build it myself. If you have docker, you can try it yourself very quickly.
If this is a problem with the official docker image, I hope emqx organization can fix it.
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Could you enable debug log?
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Oh you attached the log in picture I missed it.
No debug log needed for now.
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I started the container on ubuntu 22.04 with
docker run -p 1883:1883 -e EMQX_LISTENERS__TCP__DEFAULT__TCP_OPTIONS__KEEPALIVE="5,12,3" emqx/emqx:5.5.1
connect the client with bench tool.
./emqtt_bench conn -c 1
Start with 6 workers, addrs pool size: 1 and req interval: 60 ms
1s connect_succ total=1 rate=0.99/sec
tcpdump shows keep alive is sent after 5s idling then another keep alive after 12s.
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test.pcap.zip
pcap is attached.
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