[BUG]Vsomeip-3.5.1 Client UDP Port Closed, Server Still Sending Events

[FishPickBeans]

vSomeip Version

v3.5.1

Boost Version

1.84

Environment

Linux

Describe the bug

Linux use Vsomeip-3.5.1 code, Steps:
Firstly, client subscribe server's event-group successed.（vsomip_server.json noly support UDP）
Secondly, client reboot, But server still sending client's sub event.

Reproduction Steps

Linux use Vsomeip-3.5.1 code, Steps:
Firstly, client subscribe server's event-group successed.（vsomip_server.json noly support UDP）
Secondly, client reboot, But server still sending client's sub event.
Thirdly, tcpdump parse by wireshark.

Expected behaviour

after client reboot, server should stop sending before client's sub event.

Logs and Screenshots

vsomeip-3.5.1 log.txt

[FishPickBeans]

Uploading tcpdump_20241014200558.zip…

[duartenfonseca]

Uploading tcpdump_20241014200558.zip…

@FishPickBeans cannot open the tcpdump

[FishPickBeans]

1. The above is the tcpdump released by Vsomeip 3.5.1, but we have already removed tcpdump and are only releasing images now!
2. 172.168.2.30 is the server-side, 172.168.2.80 is the client-side, UDP transmission!
3. The image shows that the server sends an Event with a two second cycle, but the client process has been killed and there is no 1-second interval to SUB!

We speculate that after the client was killed, the server did not clear the client's last SUB information, resulting in continuous sending of events!

Sorry, we chose vsomeip3.4.10 and this issue did not occur!
thank you!

[anthonypayne-GM]

Hello,
I have seen this issue as well. It seems that if the client exits and does not send a StopSubscribe the server keeps publishing the Event even after the UDP socket has been closed.

If the client sends the StopSubscribe before exiting, the service stops publishing the event as expected.

The TTL setting in the service discovery should kick in when the client exits and it stops sending the Subscribe.

I can provide logs/packet capture if necessary. It is pretty easy to replicate.

[duartenfonseca]

hi @anthonypayne-GM, which version do you use? please provide your pcap's, and how you got that reproduction.