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Address
Host

rk.md

QUIC is supported

HTTP/3 is supported

HTTP/3 Check established a QUIC connection for all attempts made with the given endpoint. See the metrics below for more information.

0-RTT

Zero Round Trip Time Resumption (0-RTT)

The QUIC handshake for this connection was completed without any additional round-trips.

SUCCESS
h3-27 h3-28 h3-29

QUIC Versions

These are the QUIC versions supported by this QUIC endpoint.

AGREED SUPPORTED
Connection ID

Connection ID

This unique identifier for a QUIC connection is used to ensure that changes to an endpoint's lower network layer address (UDP/IP) does not affect the delivery of the QUIC connection's packets.

This tool attempts two connections to test the server's 0-RTT capabilities. During the first connection, the client receives important handshake material from the server. With 0-RTT, the client can start to send data immediately if it uses this handshake material when it creates the second connection.

Packet RX

Packet RX

This value represents the time between the first packet sent and the first packet received (measured in milliseconds).

Handshake Done

Handshake Done

This value represents the time between when the first packet is sent and when the handshake is completed (measured in milliseconds).

Take notice of the difference in this metric between the first connection and the second connection. Using 0-RTT, future connections (i.e. the second connection) can complete the handshake much faster than the original connection.

95A8C1B729... 154.661 153.75
01B327AF59... 6.61 3.154

Read detailed descriptions of the items and metrics shown above.

HTTP/3 Statistics

Zero Round Trip Time Resumption (0-RTT)

The QUIC handshake for this connection was completed without any additional round-trips.

SUCCESS

QUIC Versions

These are the QUIC versions supported by this QUIC endpoint.

AGREED SUPPORTED

Connection ID

This unique identifier for a QUIC connection is used to ensure that changes to an endpoint's lower network layer address (UDP/IP) does not affect the delivery of the QUIC connection's packets.

This tool attempts two connections to test the server's 0-RTT capabilities. During the first connection, the client receives important handshake material from the server. With 0-RTT, the client can start to send data immediately if it uses this handshake material when it creates the second connection.


Packet RX

This value represents the time between the first packet sent and the first packet received (measured in milliseconds).


Handshake Done

This value represents the time between when the first packet is sent and when the handshake is completed (measured in milliseconds).

Take notice of the difference in this metric between the first connection and the second connection. Using 0-RTT, future connections (i.e. the second connection) can complete the handshake much faster than the original connection.


QLog

QLog is a standard under development for QUIC Connection debugging and visualization. Learn more at https://quic.edm.uhasselt.be/

To view or download the raw QLog ("application/json"), add "format=qlog" to the HTTP query string.

HTTP Header

HTTP/1.1 200 OK
date: Sat, 04 Jul 2020 21:19:04 GMT
content-type: text/html; charset=UTF-8
set-cookie: __cfduid=d9110566ba740dc75589638dbf7af894f1593897544; expires=Mon, 03-Aug-20 21:19:04 GMT; path=/; domain=.rk.md; HttpOnly; SameSite=Lax; Secure
x-cache-enabled: True
x-pingback: https://rk.md/xmlrpc.php
link: <https://rk.md/wp-json/>; rel="https://api.w.org/", <https://rk.md/>; rel=shortlink
vary: Accept-Encoding
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
host-header: b7440e60b07ee7b8044761568fab26e8
cf-cache-status: DYNAMIC
cf-request-id: 03bd4b83a20000f0318c3be200000001
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=15552000; preload
x-content-type-options: nosniff
server: cloudflare
cf-ray: 5adbe1e5dcbaf031-EWR

Certificate Chain

Domain sni.cloudflaressl.com
Issued By CloudFlare Inc ECC CA-2
Expires Tuesday, August 18, 2020 at 12:00:00 PM GMT
Subject
Country US
Common Name sni.cloudflaressl.com
Organization CloudFlare, Inc.
Locality San Francisco
State/Province CA
Issuer
Country US
Common Name CloudFlare Inc ECC CA-2
Organization CloudFlare, Inc.
Locality San Francisco
State/Province CA
Serial Number 1886287644800544535262869788120724166
Signature Algorithm ecdsa-with-SHA256
Version
Public Key Bits 256
Public Key Type DSA

Domain CloudFlare Inc ECC CA-2
Issued By Baltimore CyberTrust Root
Expires Friday, October 09, 2020 at 12:00:00 PM GMT
Subject
Country US
Common Name CloudFlare Inc ECC CA-2
Organization CloudFlare, Inc.
Locality San Francisco
State/Province CA
Issuer
Country IE
Common Name Baltimore CyberTrust Root
Organization Baltimore
Unit CyberTrust
Serial Number 21204814788472567899750642361434432950
Signature Algorithm sha256WithRSAEncryption
Version
Public Key Bits 256
Public Key Type DSA

QLog Output

QLog

QLog is a standard under development for QUIC Connection debugging and visualization. Learn more at https://quic.edm.uhasselt.be/

To view or download the raw QLog ("application/json"), add "format=qlog" to the HTTP query string.

{
  "qlog_version": "0.1",
  "connections": [
    {
      "starttime": 55839663966303,
      "events": [
        [
          0,
          "CONNECTIVITY",
          "NEW_CONNECTION",
          "LINE",
          {
            "srcip": "::",
            "dstport": "443",
            "srcport": "55425",
            "ip_version": "6",
            "dstip": "2606:4700:3035::681c:1730"
          }
        ],
        [
          62,
          "CONNECTIVITY",
          "VERNEG",
          "LINE",
          {
            "proposed_version": "FF00001B"
          }
        ],
        [
          153750,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "cdff00001b0895a8c1b729ba55951477afdbb5331abe8e5441f9dbce6aabc9...",
            "header": {
              "payload_length": "145",
              "packet_number": "0",
              "type": "Initial"
            },
            "frames": [
              {
                "frame_type": "ACK"
              },
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          153755,
          "CONNECTIVITY",
          "VERNEG",
          "PACKET_RX",
          {
            "agreed_version": "FF00001B"
          }
        ],
        [
          154517,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "e9ff00001b0895a8c1b729ba55951477afdbb5331abe8e5441f9dbce6aabc9...",
            "header": {
              "payload_length": "169",
              "packet_number": "0",
              "type": "Handshake"
            },
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          154661,
          "CONNECTIVITY",
          "HANDSHAKE",
          "PACKET_RX",
          {
            "status": "complete"
          }
        ],
        [
          154666,
          "RECOVERY",
          "RTT_UPDATE",
          "PACKET_RX",
          {
            "zero_rtt": "successful"
          }
        ],
        [
          154695,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "4995a8c1b729ba5595d26d7f4a603b2b6977dbcd14a42b79da0affe05987e5...",
            "header": {
              "payload_length": "490",
              "packet_number": "0",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          158108,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "edff00001b0895a8c1b729ba55951477afdbb5331abe8e5441f9dbce6aabc9",
            "header": {
              "payload_length": "43",
              "packet_number": "1",
              "type": "Handshake"
            },
            "frames": [
              {
                "frame_type": "ACK"
              }
            ]
          }
        ],
        [
          158198,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5995a8c1b729ba55955676762afa8388d5fea23be6faff453913c6636a4e70",
            "header": {
              "payload_length": "45",
              "packet_number": "1",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              },
              {
                "frame_type": "ACK"
              },
              {
                "frame_type": "HANDSHAKE_DONE"
              }
            ]
          }
        ],
        [
          158287,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5395a8c1b729ba559599ebc197c91dfbe266a361caad36a83f1573e4b49344",
            "header": {
              "payload_length": "15",
              "packet_number": "2",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              }
            ]
          }
        ],
        [
          158335,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5195a8c1b729ba5595a19784db7104b0b9bfb67c6a46cc7c089c674d47dddf",
            "header": {
              "payload_length": "15",
              "packet_number": "3",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              }
            ]
          }
        ],
        [
          160291,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "4295a8c1b729ba5595e5be30019542dca0c0e2a5ff3591bd8fd09ffce40374",
            "header": {
              "payload_length": "15",
              "packet_number": "4",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "ACK"
              }
            ]
          }
        ],
        [
          402573,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "4595a8c1b729ba5595e0593bbb96ca89553ead7dd5c31abbaf7de14f2ea231...",
            "header": {
              "payload_length": "607",
              "packet_number": "5",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              }
            ]
          }
        ]
      ],
      "vantagepoint": "NETWORK",
      "qlog_version": "0.1",
      "connectionid": "95A8C1B729BA5595",
      "fields": [
        "time",
        "category",
        "type",
        "trigger",
        "data"
      ]
    },
    {
      "starttime": 55839663606892,
      "events": [
        [
          0,
          "CONNECTIVITY",
          "NEW_CONNECTION",
          "LINE",
          {
            "srcip": "::",
            "dstport": "443",
            "srcport": "55425",
            "ip_version": "6",
            "dstip": "2606:4700:3035::681c:1730"
          }
        ],
        [
          141,
          "CONNECTIVITY",
          "VERNEG",
          "LINE",
          {
            "proposed_version": "FF00001B"
          }
        ],
        [
          3154,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "c7ff00001b0801b327af5960c4d414dc58a1c8e861d478872920be1ea573f3",
            "header": {
              "payload_length": "43",
              "packet_number": "0",
              "type": "Initial"
            },
            "frames": [
              {
                "frame_type": "ACK"
              }
            ]
          }
        ],
        [
          3157,
          "CONNECTIVITY",
          "VERNEG",
          "PACKET_RX",
          {
            "agreed_version": "FF00001B"
          }
        ],
        [
          4393,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "ccff00001b0801b327af5960c4d414dc58a1c8e861d478872920be1ea573f3...",
            "header": {
              "payload_length": "133",
              "packet_number": "1",
              "type": "Initial"
            },
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          5328,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "e1ff00001b0801b327af5960c4d414dc58a1c8e861d478872920be1ea573f3...",
            "header": {
              "payload_length": "1180",
              "packet_number": "0",
              "type": "Handshake"
            },
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          5637,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "e2ff00001b0801b327af5960c4d414dc58a1c8e861d478872920be1ea573f3...",
            "header": {
              "payload_length": "1181",
              "packet_number": "1",
              "type": "Handshake"
            },
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          5910,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "efff00001b0801b327af5960c4d414dc58a1c8e861d478872920be1ea573f3...",
            "header": {
              "payload_length": "170",
              "packet_number": "2",
              "type": "Handshake"
            },
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ]
          }
        ],
        [
          6201,
          "SECURITY",
          "CHECK_CERT",
          "CERTLOG",
          {
            "certificate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
          }
        ],
        [
          6201,
          "SECURITY",
          "CHECK_CERT",
          "CERTLOG",
          {
            "certificate": "308203A33082028BA00302010202100FF3E61639AA3D1A1265F41F8B34E5B6300D06092A864886F70D01010B0500305A310B300906035504061302494531123010060355040A130942616C74696D6F726531133011060355040B130A43796265725472757374312230200603550403131942616C74696D6F7265204379626572547275737420526F6F74301E170D3135313031343132303030305A170D3230313030393132303030305A306F310B3009060355040613025553310B3009060355040813024341311630140603550407130D53616E204672616E636973636F31193017060355040A1310436C6F7564466C6172652C20496E632E3120301E06035504031317436C6F7564466C61726520496E63204543432043412D323059301306072A8648CE3D020106082A8648CE3D03010703420004D156F49CB6E431A0F5A452CFE39A7A86FFF286B25ECCB559CC11C74EDD64FD559C60E3A04BD97854FF4850BAA2E1A158758FC7603744164D5599ECEED4337A23A38201193082011530120603551D130101FF040830060101FF020100300E0603551D0F0101FF040403020186303406082B0601050507010104283026302406082B060105050730018618687474703A2F2F6F6373702E64696769636572742E636F6D303A0603551D1F04333031302FA02DA02B8629687474703A2F2F63726C332E64696769636572742E636F6D2F4F6D6E69726F6F74323032352E63726C303D0603551D200436303430320604551D2000302A302806082B06010505070201161C68747470733A2F2F7777772E64696769636572742E636F6D2F435053301D0603551D0E041604143E742D1FCF4575047E3FC0A2873E4C43835113C6301F0603551D23041830168014E59D5930824758CCACFA085436867B3AB5044DF0300D06092A864886F70D01010B05000382010100385FA7FFFC85F27332E4D5A389999660AF32C103B365DFBE1E03CAA5ED85B28FAF4B8C738F2A8CA9000E012417F7EC528576C8E51C79CAC3178750B60433369E2A9E1817963212AF43CC5718DEDBC7D8882583E5CA062531FDBD5D483B5101DD2C14C7C16051E99501D8B233560E47668D6CCDAFF985D9EB1C47478834E8F0FAC2AB4F694E0959D457C6CCC1C8E3E619C1583852E2E28385DE2234DC3FA6F7AF24BCE06FC0AB682D52C76B05572C421B2D4887030C90AB4848A928BE348AFBBAEDF460991D157811AAD96D537F6928BCB76B20767FA055037179F567A7B0A00A1757B200A9ADCFFF678C3E26E5A724BCC26F10E889C670A5D21F80ED0D3F2713"
          }
        ],
        [
          6610,
          "CONNECTIVITY",
          "HANDSHAKE",
          "PACKET_RX",
          {
            "status": "complete"
          }
        ],
        [
          9054,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "ebff00001b0801b327af5960c4d414dc58a1c8e861d478872920be1ea573f3",
            "header": {
              "payload_length": "42",
              "packet_number": "3",
              "type": "Handshake"
            },
            "frames": [
              {
                "frame_type": "ACK"
              }
            ]
          }
        ],
        [
          9166,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5b01b327af5960c4d4fc1e173899d153bff5c09ce9a754cb26ecace6b76a51...",
            "header": {
              "payload_length": "524",
              "packet_number": "0",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              },
              {
                "frame_type": "ACK"
              },
              {
                "frame_type": "CRYPTO"
              },
              {
                "frame_type": "HANDSHAKE_DONE"
              }
            ]
          }
        ],
        [
          9256,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "4301b327af5960c4d47fe83b00f4799a5432f1337f1631abbe2adb817b2a3a",
            "header": {
              "payload_length": "15",
              "packet_number": "1",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              }
            ]
          }
        ],
        [
          9305,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5001b327af5960c4d4e00793d0ebedbce452c6cc296074af24ff59f9699d3a",
            "header": {
              "payload_length": "15",
              "packet_number": "2",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              }
            ]
          }
        ],
        [
          11340,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5501b327af5960c4d446fbbae5be3d1e947542c1b5aa360133f31a641bf13e",
            "header": {
              "payload_length": "15",
              "packet_number": "3",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "ACK"
              }
            ]
          }
        ],
        [
          358618,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "5f01b327af5960c4d4142adad4c96768b3dacd80043b1b913046bd67e8ecda...",
            "header": {
              "payload_length": "607",
              "packet_number": "4",
              "type": "Short"
            },
            "frames": [
              {
                "frame_type": "STREAM"
              }
            ]
          }
        ]
      ],
      "vantagepoint": "NETWORK",
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}