curl

*   Trying 2606:4700::6810:f8f9:443...
* TCP_NODELAY set
* Connected to cloudflare-dns.com (2606:4700::6810:f8f9) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-ECDSA-CHACHA20-POLY1305
* ALPN, server accepted to use h2
* Server certificate:
*  subject: C=US; ST=California; L=San Francisco; O=Cloudflare, Inc.; CN=cloudflare-dns.com
*  start date: Jan 28 00:00:00 2019 GMT
*  expire date: Feb  1 12:00:00 2021 GMT
*  issuer: C=US; O=DigiCert Inc; CN=DigiCert ECC Secure Server CA
*  SSL certificate verify ok.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x55ab1d4c42b0)
> GET /dns-query?dns==AAAAAAABAAAAAAAAA25pYwJjegAAAQAB HTTP/2
> Host: cloudflare-dns.com
> User-Agent: curl/7.65.0
> accept: application/dns-message
>
* Connection state changed (MAX_CONCURRENT_STREAMS == 256)!
< HTTP/2 400
< date: Mon, 27 May 2019 14:16:19 GMT
< access-control-allow-origin: *
< expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
< server: cloudflare
< cf-ray: 4dd89b24ab613e3c-PRG
<
* Connection #0 to host cloudflare-dns.com left intact