mobile: quic crashes on start-stop-start cycle

[iwanbk]

On Android (and probably on iOS as well), latest mycelium crashed on start-stop-start cycle.

steps to reproduce:

• start android mycelium
• stop
• start again

Crash message doesn't really point out to quic. But it is fixed when we force is_private_net var to true

https://github.com/threefoldtech/mycelium/blob/ee34c1442071017323a33599d4125339d0a4c048/mycelium/src/peer_manager.rs#L171

Do we need QUIC on mobile device? If no, maybe we can disable it as well.

In case we disable it, i think we still need to fix it because this crashes mean there is some process that is not gfacefully shut down

[iwanbk]

On Android (and probably on iOS as well)

i found that it doesn't crash on iOS

[LeeSmet]

This is rather strange that it only crashes on quic sockets on android. Regardless given that it happens on a second start, I feel that it's caused by not properly cleaning up when the process is done. Mycelium basically spawns a bunch of background tasks which run forever. Up until now, this was fine, since on desktop, if the node exits, we just exit the whole process.

[iwanbk]

Up until now, this was fine, since on desktop, if the node exits, we just exit the whole process.

FYI, it was fine when i'm working on this PR. https://github.com/threefoldtech/mycelium/pull/239

So, it broke after/around that time

[LeeSmet]

@iwanbk I assume this is working properly now?

[iwanbk]

@iwanbk I assume this is working properly now?

i haven't tested it yet because i disable QUIC now. will test it next week.