twiggywan

@twiggywan@mastodon.social

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twiggywan, to random

hi @b0rk , i contact you cuz ilike your blog.

I'm trying to investigate a kubectl port-forward issue going bad with firefox but working with chromium.
The pod i debug has a ssh daemon, and when using ssh portforward instead it works good with both browsers.

I tried asking on kubernetes slack but so far no response (https://kubernetes.slack.com/archives/C09NXKJKA/p1715347467541609)

Because it involves the browser, kubernetes,containerd i'm really lost where I should look for help. Could you pls give me pointers?

thanks

twiggywan,

@b0rk did it already but i don't know how to diff packets in wireshark :(

So I only looked at http layer (cuz i know nothing else) :
besides the different user agent, chromium has those lines and firefox does not:
sec-ch-ua
sec-ch-ua-mobile
sec-ch-ua-platform

what else should i look for in the lower layers?
And is there a way to "copy" what I think is the faulty packet and send it without the browser?

twiggywan,

@b0rk good idea!

copy as curl works fine with what comes from either browser

but in a shell loop if i randomly interrupt the image transfer, I see logs:

write tcp4 127.0.0.1:10851->127.0.0.1:41562: write: broken pipe

and then the port forward dies and this happens with either browser!
Just that for some reason my firefox breaks the pipe instantly (even without extensions)!

Thanks to your help I found a similar issue https://github.com/kubernetes/kubernetes/issues/74551#issuecomment-476418180 and know where to go now :)

you're awesome

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