SSL_ERROR_INTERNAL_ERROR_ALERT

[chribro88]

Having this SSL_ERROR_INTERNAL_ERROR_ALERT error occurring resulting in the browser page not loading. The page is open for a sometime with new requests coming in periodically, but eventually this error will happen and crash the page.

Browser is Firefox which is connected to Mirror Proxy (http). The request is HTTPS. Mirror Proxy is configured to use an Upstream Proxy (HTTP) which is HAProxy (set up as a forward proxy). There are no errors in HAProxy that I can see.

Mirror proxy has the following errors I can see:

2023/03/10 06:47:08 [221] INFO: Client ALPN offers: [h2 http/1.1]
2023/03/10 06:47:08 [221] INFO: Client hello fingerprinting error unsupported extension PreSharedKey
2023/03/10 06:47:09 [221] INFO: Remote conn established
2023/03/10 06:47:09 [221] INFO: Wait for extractALPN
2023/03/10 06:47:09 [221] INFO: Closing remotePlaintextConn
2023/03/10 06:47:09 [221] WARN: Couldn't connect: error extracting ALPN: unsupported extension PreSharedKey

which seem to occur here: utls.go L248

and here, respectively: utls.go L117 tls_hijacker.go L27

Looks like there's a recent commit of utls.fingerprinter which removes KeepPSK. It looks like previously if KeepPSK was set to false, it would throw the err 'unsupported PreSharedKey'. ~~I tried changing it to true here in utls.go but didn't seem to fix anything..~~ Actually I don't it compiled with KeepPSK to true - so testing that now. Though I thought I read on the utls git that it messes with the TLS fingerprint...

Definitely a few moving parts and I haven't got any real way to reproduce the error (or whether its even a Mirror Proxy problem) but just wanted to check if this was something that had been come across whilst using Mirror Proxy?

Edit: Tried 1.3.0 utls, error was then WARN: Couldn't connect: remote error: tls: error decoding message.