how to terminate exec process?

[k0xxxx]

Hello dear Vi! I use websocat -E ws-l:127.0.0.1:8080 exec:"cmd"
I connect to a websocket using a browser and run the program from the command line
echo {"method":"SUBSCRIBE","params":["test"],"id":100} | websocat -n wss:/server.com/ws | php script.php argv1 argv2. It can run indefinitely. How can I interrupt (terminate) the execution of the program from the browser? I tried sending "^C" but it doesn't work in windows.

[vi]

Try newly added option --exec-exit-on-disconnect from 734cc58.

[k0xxxx]

Dear Vi. In OS Windows 10 it option "--exec-exit-on-disconnect" is work. After connect to ws on port 8080, i close my web browser and i see this message on windows cmd terminal
D:\D\OpenServer\modules\php\PHP_7.4>websocat -t --exec-exit-on-disconnect -E ws-l:127.0.0.1:8080 exec:cmd websocat: other error websocat: error running
and created php.exe process is terminated. But when I tried to show the same in Ubuntu,
./websocat -t -E --exec-exit-on-disconnect -v ws-l:1.2.3.4:9000 exec:sh
the php.exe process still running in the background.

UPDATE
this bug stay while my php script do not send any echo "message"; to the terminal console

[vi]

I tried websocat -t -E --exec-exit-on-disconnect -v ws-l:127.0.0.1:9000 cmd:'ping 127.0.0.1' with and without --exec-exit-on-disconnect. With the option, it does terminate process even on Linux, but does not free up the PID (i.e. leaves a zombie).

Until this is fixed, you may want to use --exec-sighup-on-stdin-close on Linux.