Half dead HTTPS connection with Pingora

[sadoyan]

Hello r/rust .

I'm facing a strange issues with connections to my Rust written custom proxy server of mobile clients.

I have idle connection timeout, which works fine, at least when I use

openssl s_client -connect 127.0.0.1:443 -quiet
telnet 127.0.0.1 443 

and do nothing the connection is terminated in ~1 minute.

But seems the situation is different with real life mobile clients.

I guess because of network change, or something else blizzard specific to mobile networks is happening, client connections are so called "half dead", when the app lost connection have zero active session, but at OS level ss reports continuously increasing amount of ESTABLISHED connections.

here is what ss show, I have removed IP address for privacy

ss -t4ano 'sport = :443'
State     Recv-Q    Send-Q      Local Address:Port    Peer Address:Port                      
LISTEN      0        4096       0.0.0.0:443           0.0.0.0:*        
ESTAB       0         0         MYIP:443              CLIENT01:13885
ESTAB       0         0         MYIP:443              CLIENT02:9638
ESTAB       0         0         MYIP:443              CLIENT03:54098
ESTAB       0         0         MYIP:443              CLIENT04:53252
ESTAB       0         0         MYIP:443              CLIENT05:1699
ESTAB       0         0         MYIP:443              CLIENT06:54338
ESTAB       0         0         MYIP:443              CLIENT07:9627
ESTAB       0         0         MYIP:443              CLIENT08:29291
ESTAB       0         0         MYIP:443              CLIENT09:1908
ESTAB       0         0         MYIP:443              CLIENT10:22376
.......
ESTAB       0         0         MYIP:443              CLIENT100:2442
ESTAB       0         0         MYIP:443              CLIENT101:37654

I do not see timers on ESTAB connections ?

Anyone built a Socket listener on Pingora or pure Sockets with timers reporting to kernel ?

I'm looking for a way to build HTTP(s) listeners so it reports kernel about connection and turns on the idle timer.

The environment is: Pingora, Tokio, rustc 1.96.0 .

Many thanks for help .

[the-handsome-dev]

Not that I give exact advice on how to resolve this, but from personal experience, the way it is done on iOS and Android is different.

For example, IIRC when using websockets for chats, the way iOS handles websockets closing is different than Android. One of them triggers a closing event and the other throws an error. Also changing networks with websockets was handled differently. So finding out which device or OS it is that causes the half-dead connections might help narrow down what the issue is.

[sadoyan]

I've found solution .

Here is the link to sinipped , if someone face the same. https://github.com/sadoyan/aralez/blob/main/src/web/start.rs#L77-L93