Interesting upstream server failed warning on dns.surfshark.com #873
Description
The warning:
[2023-02-10 15:27:56] WARN parallel resolver: test resolve of upstream server failed: can't resolve request via upstream server https://92.249.39.1:443/dns-query: http return content type should be 'application/dns-message', but was ''
When I use curl to test it, the result looks no problem:
$ curl -sD- -o /dev/null https://dns.surfshark.com/dns-query?dns=AAABAAABAAAAAAABBmRuc2xvdwJtZQAAAQABAAApAgAAAAAAAFoADABWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
HTTP/2 200
access-control-allow-headers: Content-Type
access-control-allow-methods: GET, HEAD, OPTIONS, POST
access-control-allow-origin: *
access-control-max-age: 3600
cache-control: private, max-age=3593
content-type: application/dns-message
date: Fri, 10 Feb 2023 15:40:39 GMT
expires: Fri, 10 Feb 2023 16:40:32 GMT
last-modified: Fri, 10 Feb 2023 15:40:39 GMT
vary: Accept
content-length: 63