Tequilapi "/stop" endpoint does not stop myst service

[Waldz]

How to reproduce:

1. Start service

bin/build && bin/run service --agreed-terms-and-conditions

2. Try to stop service thru Tequilapi

curl -X POST http://localhost:4050/stop

2018-10-14T11:53:15.974989 [Info] Application stop requested
2018-10-14T11:53:15.975132 [Info] [discovery] stopping discovery loop..
2018-10-14T11:53:15.975173 [Info] [discovery] cancelled identity registration
2018-10-14T11:53:15.975235 [Info] [service-manager] Waiting for service to finish
2018-10-14T11:53:15.986791 [Info] [nat] NAT rules cleared
2018-10-14T11:53:15.994995 [Info] [nat] IP forwarding disabled
2018-10-14T11:53:15.995061 [Info] [client-management] Shutdown
2018-10-14T11:53:15.995242 [Info] [client-management] Shutdown finished
2018-10-14T11:53:15.995282 [Info] No active connection - proceeding
2018-10-14T11:53:15.995419 [Trace] [openvpn-process] Stdout: Sun Oct 14 14:53:15 2018 event_wait : Interrupted system call (code=4)
2018-10-14T11:53:15.995481 [Info] Api stopped
Good bye

3. Result1 (random): Process does not stop and After 3s or some time service outputs again

2018-10-14T11:53:18.001838 [Trace] [openvpn-process] Stdout: Sun Oct 14 14:53:18 2018 Closing TUN/TAP interface
2018-10-14T11:53:18.003133 [Debug] [client-management] Line received: >STATE:1539517998,EXITING,SIGINT,,,,,
2018-10-14T11:53:18.003184 [Warn] [client-management] Connection failed to read. EOF
2018-10-14T11:53:18.003212 [Trace] [client-management] Line delivering: >STATE:1539517998,EXITING,SIGINT,,,,,
2018-10-14T11:53:18.003374 [Info] [client-management] Event consumer is done
2018-10-14T11:53:18.003431 [Info] [service-openvpn] Openvpn service exited
2018-10-14T11:53:18.003527 [Warn] [client-management] Middleware stop error. connection is gone
2018-10-14T11:53:18.003653 [Trace] [openvpn-process] Stdout: Sun Oct 14 14:53:18 2018 SIGINT[hard,] received, process exiting
2018-10-14T11:53:18.003667 [Trace] [openvpn-process] Stdout: Sun Oct 14 14:53:18 2018 MANAGEMENT: >STATE:1539517998,EXITING,SIGINT,,,,,
2018-10-14T11:53:18.005274 [Info] [openvpn-process] Stderr: stream ended
2018-10-14T11:53:18.005322 [Info] [openvpn-process] Stdout: stream ended

4. Result2 (random): Process exists:

2018-10-14T11:52:46.419441 [Info] Application stop requested
2018-10-14T11:52:46.433123 [Info] [nat] NAT rules cleared
2018-10-14T11:52:46.441483 [Info] [nat] IP forwarding disabled
2018-10-14T11:52:46.441541 [Info] No active connection - proceeding
2018-10-14T11:52:46.441692 [Info] Api stopped
Good bye
2018-10-14T11:52:46.44769 [Info] [nat] NAT rules cleared
2018-10-14T11:52:46.447734 [Warn] Failed to disable IP forwarding: [/usr/sbin/sysctl -w net.inet.ip.forwarding=0] Returned exit error: exec: Stdout already set Cmd output:
2018-10-14T11:52:46.447789 [Info] [nat] IP forwarding disabled
2018-10-14T11:52:46.447922 [Info] No active connection - proceeding
2018-10-14T11:52:46.447985 [Info] Api stopped

Expected result:

• Result2 should be stable, not random
• Result2 should have only 1 log message "Api stopped"

[Waldz]

Absolutely same random stop happens with sending sig term signal(Command+C)

[tcharding]

I can't reproduce this using curl. I ran the localnet and started the myst service as described above. curling localhost:4050/stop stopped the service 10 out of 10 times. However for meCtl-C also hangs sometimes as above.