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Address
Host

quic.cloud

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
h3-25 h3-27 h3-Q043 h3-Q046 h3-Q050 Q043 Q046

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.

F6557C3A9E... 9.471 8.411
446D2A1BA5... 16.559 12.945

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
x-dns-prefetch-control: on
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
content-type: text/html; charset=UTF-8
x-ua-compatible: IE=edge
link: <https://quic.cloud/wp-json/>; rel="https://api.w.org/"
link: <https://quic.cloud/wp-json/wp/v2/pages/12>; rel="alternate"; type="application/json"
link: <https://quic.cloud/>; rel=shortlink
etag: "678782-1638839178;;;"
x-litespeed-cache: hit
date: Tue, 07 Dec 2021 01:06:41 GMT
server: LiteSpeed

Certificate Chain

Domain *.quic.cloud
Issued By R3
Expires Monday, January 17, 2022 at 09:27:00 AM GMT
This certificate is valid
Subject
Common Name *.quic.cloud
Issuer
Organization Let's Encrypt
Country US
Common Name R3
Serial Number 372769483179056070324534807408116952301480
Signature Algorithm sha256WithRSAEncryption
Version
Public Key Bits 2048
Public Key Type RSA

Domain R3
Issued By ISRG Root X1
Expires Monday, September 15, 2025 at 04:00:00 PM GMT
Subject
Organization Let's Encrypt
Country US
Common Name R3
Issuer
Organization Internet Security Research Group
Country US
Common Name ISRG Root X1
Serial Number 192961496339968674994309121183282847578
Signature Algorithm sha256WithRSAEncryption
Version
Public Key Bits 2048
Public Key Type RSA

Domain ISRG Root X1
Issued By ISRG Root X1
Expires Monday, June 04, 2035 at 11:04:38 AM GMT
Subject
Organization Internet Security Research Group
Country US
Common Name ISRG Root X1
Issuer
Organization Internet Security Research Group
Country US
Common Name ISRG Root X1
Serial Number 172886928669790476064670243504169061120
Signature Algorithm sha256WithRSAEncryption
Version
Public Key Bits 4096
Public Key Type RSA

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.

{
  "description": "quic.cloud",
  "connections": [
    {
      "fields": [
        "time",
        "category",
        "type",
        "trigger",
        "data"
      ],
      "connectionid": "F6557C3A9E2FE8C2",
      "starttime": 100780981097241,
      "vantagepoint": "NETWORK",
      "qlog_version": "0.1",
      "events": [
        [
          0,
          "CONNECTIVITY",
          "NEW_CONNECTION",
          "LINE",
          {
            "srcip": "0.0.0.0",
            "srcport": "49204",
            "dstport": "443",
            "dstip": "3.225.219.165",
            "ip_version": "4"
          }
        ],
        [
          74,
          "CONNECTIVITY",
          "VERNEG",
          "LINE",
          {
            "proposed_version": "FF00001B"
          }
        ],
        [
          8411,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ],
            "raw": "ccff00001b08f6557c3a9e2fe8c208944f2ad3fe56eb4300407552e35b7b5f...",
            "header": {
              "payload_length": "127",
              "packet_number": "0",
              "type": "Initial"
            }
          }
        ],
        [
          8417,
          "CONNECTIVITY",
          "VERNEG",
          "PACKET_RX",
          {
            "agreed_version": "FF00001B"
          }
        ],
        [
          9332,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ],
            "raw": "e0ff00001b08f6557c3a9e2fe8c208944f2ad3fe56eb43408eebd33e0dc672...",
            "header": {
              "payload_length": "151",
              "packet_number": "1",
              "type": "Handshake"
            }
          }
        ],
        [
          9471,
          "CONNECTIVITY",
          "HANDSHAKE",
          "PACKET_RX",
          {
            "status": "complete"
          }
        ],
        [
          9521,
          "RECOVERY",
          "RTT_UPDATE",
          "PACKET_RX",
          {
            "zero_rtt": "successful"
          }
        ],
        [
          9625,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "ACK"
              }
            ],
            "raw": "c6ff00001b08f6557c3a9e2fe8c208944f2ad3fe56eb430040161b9372f5f8",
            "header": {
              "payload_length": "32",
              "packet_number": "2",
              "type": "Initial"
            }
          }
        ],
        [
          17625,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              },
              {
                "frame_type": "HANDSHAKE_DONE"
              }
            ],
            "raw": "43f6557c3a9e2fe8c23302754733eb6ddf4df412a884bb0cd9c755d39fb38f...",
            "header": {
              "payload_length": "411",
              "packet_number": "3",
              "type": "Short"
            }
          }
        ],
        [
          17831,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "edff00001b08f6557c3a9e2fe8c208944f2ad3fe56eb434016168b4ba4839b",
            "header": {
              "payload_length": "47",
              "packet_number": "4611686018427387904",
              "type": "Handshake"
            }
          }
        ],
        [
          17878,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "STREAM"
              },
              {
                "frame_type": "ACK"
              },
              {
                "frame_type": "NEW_CONNECTION_ID"
              },
              {
                "frame_type": "NEW_TOKEN"
              }
            ],
            "raw": "42f6557c3a9e2fe8c289252ea07e242285a0231e7a020ba0b02f0d6b6d7cda...",
            "header": {
              "payload_length": "472",
              "packet_number": "5",
              "type": "Short"
            }
          }
        ]
      ]
    },
    {
      "fields": [
        "time",
        "category",
        "type",
        "trigger",
        "data"
      ],
      "connectionid": "446D2A1BA59FE0C5",
      "starttime": 100780981070147,
      "vantagepoint": "NETWORK",
      "qlog_version": "0.1",
      "events": [
        [
          0,
          "CONNECTIVITY",
          "NEW_CONNECTION",
          "LINE",
          {
            "srcip": "0.0.0.0",
            "srcport": "49204",
            "dstport": "443",
            "dstip": "3.225.219.165",
            "ip_version": "4"
          }
        ],
        [
          258,
          "CONNECTIVITY",
          "VERNEG",
          "LINE",
          {
            "proposed_version": "FF00001B"
          }
        ],
        [
          12945,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ],
            "raw": "c7ff00001b08446d2a1ba59fe0c50860ee775bf801ace700406f2dda845d7a...",
            "header": {
              "payload_length": "121",
              "packet_number": "0",
              "type": "Initial"
            }
          }
        ],
        [
          12951,
          "CONNECTIVITY",
          "VERNEG",
          "PACKET_RX",
          {
            "agreed_version": "FF00001B"
          }
        ],
        [
          14360,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "ACK"
              }
            ],
            "raw": "ceff00001b08446d2a1ba59fe0c50860ee775bf801ace700401717fbd3ff0d",
            "header": {
              "payload_length": "33",
              "packet_number": "1",
              "type": "Initial"
            }
          }
        ],
        [
          14463,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ],
            "raw": "e2ff00001b08446d2a1ba59fe0c50860ee775bf801ace744cbfe85429e0569...",
            "header": {
              "payload_length": "1236",
              "packet_number": "2",
              "type": "Handshake"
            }
          }
        ],
        [
          15022,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ],
            "raw": "ebff00001b08446d2a1ba59fe0c50860ee775bf801ace744cbc972dda7889d...",
            "header": {
              "payload_length": "1236",
              "packet_number": "3",
              "type": "Handshake"
            }
          }
        ],
        [
          15569,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              }
            ],
            "raw": "e8ff00001b08446d2a1ba59fe0c50860ee775bf801ace742fc9db38acfb10d...",
            "header": {
              "payload_length": "773",
              "packet_number": "4",
              "type": "Handshake"
            }
          }
        ],
        [
          16097,
          "SECURITY",
          "CHECK_CERT",
          "CERTLOG",
          {
            "certificate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
          }
        ],
        [
          16097,
          "SECURITY",
          "CHECK_CERT",
          "CERTLOG",
          {
            "certificate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
          }
        ],
        [
          16559,
          "CONNECTIVITY",
          "HANDSHAKE",
          "PACKET_RX",
          {
            "status": "complete"
          }
        ],
        [
          25485,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "CRYPTO"
              },
              {
                "frame_type": "HANDSHAKE_DONE"
              }
            ],
            "raw": "42446d2a1ba59fe0c5b6ca8b65afa1fd9ad18bac74e80fff29161dba80d1f1...",
            "header": {
              "payload_length": "411",
              "packet_number": "5",
              "type": "Short"
            }
          }
        ],
        [
          25817,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "raw": "e4ff00001b08446d2a1ba59fe0c50860ee775bf801ace74016f145e556844b",
            "header": {
              "payload_length": "47",
              "packet_number": "4611686018427387904",
              "type": "Handshake"
            }
          }
        ],
        [
          25923,
          "TRANSPORT",
          "PACKET_RX",
          "LINE",
          {
            "frames": [
              {
                "frame_type": "STREAM"
              },
              {
                "frame_type": "ACK"
              },
              {
                "frame_type": "NEW_CONNECTION_ID"
              },
              {
                "frame_type": "NEW_TOKEN"
              }
            ],
            "raw": "43446d2a1ba59fe0c57b7ba9362afcc03710f42bf73b7332adae6de6d78c5e...",
            "header": {
              "payload_length": "472",
              "packet_number": "7",
              "type": "Short"
            }
          }
        ]
      ]
    }
  ],
  "qlog_version": "0.1"
}