bash-5.0# curl -v https://acme-staging-v02.api.letsencrypt.org/acme/authz-v3/79320999
* Connected to acme-staging-v02.api.letsencrypt.org (172.65.46.172) port 443 (#0)
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
*  expire date: Sep  4 21:40:22 2020 GMT
* Using HTTP2, server supports multi-use
* TLSv1.2 (OUT), TLS handshake, Finished (20):
bash-5.0# curl -v https://acme-v02.api.letsencrypt.org/acme/authz-v3/5958061401
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server accepted to use h2
* Server certificate:
*  subject: CN=acme-v01.api.letsencrypt.org
*  start date: Jul 10 19:29:06 2020 GMT
*  expire date: Oct  8 19:29:06 2020 GMT
*  subjectAltName: host "acme-v02.api.letsencrypt.org" matched cert's "acme-v02.api.letsencrypt.org"
*  issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
*  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 0x55db226454e0)
> GET /acme/authz-v3/5958061401 HTTP/2
> Host: acme-v02.api.letsencrypt.org
> user-agent: curl/7.69.1
> accept: */*
>
* Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
< HTTP/2 200
< server: nginx
< date: Sun, 19 Jul 2020 18:43:52 GMT
< content-type: application/json
< content-length: 840
< cache-control: public, max-age=0, no-cache
< link: <https://acme-v02.api.letsencrypt.org/directory>;rel="index"
< x-frame-options: DENY
< strict-transport-security: max-age=604800
<
{
  "identifier": {
    "type": "dns",
    "value": "samvanderkris.xyz"
  },
  "status": "invalid",
  "expires": "2020-07-25T14:25:08Z",
  "challenges": [
    {
      "type": "tls-alpn-01",
      "status": "invalid",
      "error": {
        "type": "urn:ietf:params:acme:error:connection",
        "detail": "Timeout during read (your server may be slow or overloaded)",
        "status": 400
      },
      "url": "https://acme-v02.api.letsencrypt.org/acme/chall-v3/5958061401/xd3qmQ",
      "token": "zCBn[...]iE6To",
      "validationRecord": [
        {
          "hostname": "samvanderkris.xyz",
          "port": "443",
          "addressesResolved": [
            "51.15.93.3",
            "2001:bc8:1830:d2f::1"
          ],
          "addressUsed": "2001:bc8:1830:d2f::1"
        }
      ]
    }
  ]
* Connection #0 to host acme-v02.api.letsencrypt.org left intact