unknown type 0x5 from Android

[ScuroNeko]

When i'm connecting to proxy from android app, in mtg log error and proxy not working
{"level":"info","logger":"proxy","error":"invalid type: unknown type 0x5","timestamp":1771237268963,"message":"cannot read client hello"}
but when im connecting from ios, everything fine. Using docker

config.toml

secret = "BASE64_KEY"
bind-to = "0.0.0.0:3128"
concurrency = 8192
prefer-ip = "only-ipv4"
domain-fronting-port = 443
allow-fallback-on-unknown-dc = false

[network]
doh-ip = "1.1.1.1"

[network.timeout]
tcp = "5s"
http = "10s"
idle = "1m"

[defense.anti-replay]
enabled = true
max-size = "1mib"
error-rate = 0.001```

[9seconds]

This is very hard to say what is the reason here. I have only 1 Android device that works as expected. Need more details or clues to debug

[ScuroNeko]

looks like it's fixed. i don't know, i'm tried two more devices and it works fine. then i try on device than didn't work before, it gave me same error two times and then it started working.

[abelyanskiy]

I had the same problem with one of my clients. It won't connect from the phone, and the logs show the exact same line. Where can I troubleshoot the issue?

[9seconds]

@abelyanskiy is there any possibility of MITM? It means that TLS client hello is incorrect

[abelyanskiy]

@abelyanskiy is there any possibility of MITM? It means that TLS client hello is incorrect

Yes, I think that's possible. This is my friend's device, but I don't have full access to it (One Plus Nord 3).
Everything works fine on ten other devices, owned by different people.