Curl with http/3 option cannot get web page

[lea_97]

Hello everyone,

I installed and set up a simple OpenLiteSpeed web server following the official instructions, and integrated an SSL certificate. Unfortunately I can't reach my website with curl and the http/3 option. (Other websites work with curl though, so can't really be due to curl?!). I have also already followed all the hints from the LiteSpeed Wiki, unfortunately without success.
I have now downgraded OLS to V1.6.21, which seems to have worked. What could be the reason for this? Does anyone else have the same problem with V1.7.*? Or maybe someone has a clue what I need to be aware of?
I appreciate any help you can give me.

 

[Cold-Egg]

Could you share any site URL so we can check?
Have you checked with https://www.http3check.net/ when v1.7.x is running?

 

[lea_97]

Unfortunately I can't share URL publicly, because my web server is running for research purposes only on a university computer, which is protected by firewall. According to http3check.net QUIC is enabled.

 

[Cold-Egg]

I am not so sure about the curl issue actually. If both of the http3check tool and chrome extension show HTTP/3, then you might want to check on the curl. Just curious, did you use the default curl package?

 

[lea_97]

I use curl with the quiche version (https://github.com/curl/curl/blob/master/docs/HTTP3.md). The strange thing is that this works for other websites (e.g. OpenLiteSpeed) and now for V1.6.21 it works as well. Just not for V1.7.14 and V1.7.15 respectively.
The Chrome extension indicated that the first call was over HTTP/2, when I reloaded it with disabled cache it ran with HTTP/3.

 

[Cold-Egg]

It is expected that the first URL load with http/2 first then the same URL with http/3 is loaded.
Chrome has to learn about a site that supports HTTP/3, this is done through HTTP headers, so the first request will be HTTP/2