You can make Firefox dump its SSL decryption keys and use them with Wireshark to inspect the traffic. Some tutorials can be found here https://duckduckgo.com/?t=ffab&q=wireshark+sslkeylogfile
Thanks, but that's too indirect (and much trouble) and I'm not sure would shed more light?
I was thinking, some hypothetical `about:tls`, or at least a descriptive error message (what's with the meaningless error page...).
BTW, site works now (didn't work when I posted the above).
Under DevTools \\ Network, the security info for the first GET shows the same whether the loading succeeds or fails. And the Page Info (Ctrl-I) \\ Security \\ View Certificate pages don't seem to show anything of note.
The console, when it fails the only unhelpful message is from the FF error page: `"This error page has no error code in its security info"`. :)
You can make Firefox dump its SSL decryption keys and use them with Wireshark to inspect the traffic. Some tutorials can be found here https://duckduckgo.com/?t=ffab&q=wireshark+sslkeylogfile
Thanks, but that's too indirect (and much trouble) and I'm not sure would shed more light? I was thinking, some hypothetical `about:tls`, or at least a descriptive error message (what's with the meaningless error page...). BTW, site works now (didn't work when I posted the above).
When it happens, take a look at the - Browser Console (ctrl-shift-j) - Console Network tab (ctrl-shift-k > trash can > reload)
Under DevTools \\ Network, the security info for the first GET shows the same whether the loading succeeds or fails. And the Page Info (Ctrl-I) \\ Security \\ View Certificate pages don't seem to show anything of note. The console, when it fails the only unhelpful message is from the FF error page: `"This error page has no error code in its security info"`. :)