QUIC Versions
Expert(s)
- Jana Iyengar, Ian Swett, Martin Thomson
Reference
- RFC 9000: QUIC: A UDP-Based Multiplexed and Secure Transport
Available Formats
| Range | Registration Procedures |
|---|---|
| provisional | Expert Review |
| provisional registration Date field update | First Come First Served |
| permanent | Specification Required |
| first unassigned codepoint | Standards Action |
| value 0x?a?a?a?a | Reserved |
| Value | Status | Specification | Date | Change Controller | Contact | Notes |
|---|---|---|---|---|---|---|
| 0x00000000 | permanent | RFC 9000 | 2021-02-11 | IETF | QUIC working group | Reserved for Version Negotiation |
| 0x00000001 | permanent | RFC 9000 | 2021-02-11 | IETF | QUIC working group | |
| 0x51303433 | provisional | 2021-10-15 | Google QUIC Q043 | |||
| 0x51303436 | provisional | 2021-10-15 | Google QUIC Q046 | |||
| 0x51303530 | provisional | 2021-10-15 | Google QUIC Q050 | |||
| 0x6b3343cf | permanent | RFC 9369 | 2022-12-16 | IETF | QUIC working group | |
| 0x6f7dc0fd | provisional | draft-ietf-scone-protocol-04 | 2026-04-16 | IETF | QUIC working group | SCONE Protocol - Even Signal Values |
| 0x709a50c4 | provisional | RFC 9369 | 2022-12-16 | IETF | QUIC working group | QUIC v2 draft codepoint |
| 0xef7dc0fd | provisional | draft-ietf-scone-protocol-04 | 2026-04-16 | IETF | QUIC working group | SCONE Protocol - Odd Signal Values |
QUIC Transport Parameters
Expert(s)
- Jana Iyengar, Ian Swett, Martin Thomson
Reference
- RFC 9000: QUIC: A UDP-Based Multiplexed and Secure Transport
Available Formats
| Range | Registration Procedures |
|---|---|
| provisional | Expert Review |
| provisional registration Date field update | First Come First Served |
| permanent, 0x00-0x3f | Standards Action or IESG Approval |
| permanent, greater than 0x3f | Specification Required |
| first unassigned codepoint | Standards Action |
| values 31 * N + 27 (for integer values of N) | Reserved |
| Value | Parameter Name | Status | Specification | Date | Change Controller | Contact | Notes |
|---|---|---|---|---|---|---|---|
| 0x00 | original_destination_connection_id | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x01 | max_idle_timeout | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x02 | stateless_reset_token | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x03 | max_udp_payload_size | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x04 | initial_max_data | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x05 | initial_max_stream_data_bidi_local | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x06 | initial_max_stream_data_bidi_remote | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x07 | initial_max_stream_data_uni | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x08 | initial_max_streams_bidi | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x09 | initial_max_streams_uni | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x0a | ack_delay_exponent | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x0b | max_ack_delay | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x0c | disable_active_migration | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x0d | preferred_address | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x0e | active_connection_id_limit | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x0f | initial_source_connection_id | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x10 | retry_source_connection_id | permanent | RFC 9000, Section 18.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x11 | version_information | permanent | RFC 9368 | 2022-12-16 | IETF | QUIC working group | |
| 0x1d | reset_stream_at | permanent | RFC-ietf-quic-reliable-stream-reset-11 | 2026-09-28 | IETF | QUIC working group | |
| 0x20 | max_datagram_frame_size | permanent | RFC 9221 | 2021-10-20 | IETF | QUIC working group | |
| 0x3e | initial_max_path_id | permanent | RFC-ietf-quic-multipath-21, Section 2.1 | 2026-03-30 | IETF | QUIC working group | |
| 0x173e | discard | provisional | https://github.com/quicwg/base-drafts/wiki/Quantum-Readiness-test | 2022-06-02 | David Schinazi | David Schinazi | Receiver silently discards. |
| 0x219e | scone_supported | provisional | draft-ietf-scone-protocol-04 | 2026-04-16 | IETF | QUIC working group | |
| 0x26ab | google handshake message | provisional | 2022-11-01 | Used to carry Google internal handshake message | |||
| 0x2ab2 | grease_quic_bit | permanent | RFC 9287 | 2022-07-13 | IETF | QUIC working group | |
| 0x3127 | initial_rtt | provisional | 2021-10-20 | Initial RTT in microseconds | |||
| 0x3128 | google_connection_options | provisional | 2021-10-20 | Google connection options for experimentation | |||
| 0x3129 | user_agent | provisional | 2021-10-20 | User agent string (deprecated) | |||
| 0x4752 | google_version | provisional | 2026-05-04 | Deprecated; use version_information instead | |||
| 0xff73db | version_information_draft | provisional | draft-ietf-quic-version-negotiation-13 | 2025-03-21 | IETF | QUIC working group | Deprecated; use version_information instead |
| 0x219bbcd0 | google_debug_1 | provisional | 2025-09-23 | ||||
| 0xff04de1b | min_ack_delay | provisional | draft-ietf-quic-ack-frequency-07 | 2023-10-27 | Mirja Kühlewind | Mirja Kühlewind | |
| 0x4143414213370002 | bdp_frame | provisional | draft-misell-quic-bdp-token-02 | 2024-01-24 | Q Misell | Q Misell |
QUIC Frame Types
Expert(s)
- Jana Iyengar, Ian Swett, Martin Thomson
Reference
- RFC 9000: QUIC: A UDP-Based Multiplexed and Secure Transport
Available Formats
| Range | Registration Procedures |
|---|---|
| provisional | Expert Review |
| provisional registration Date field update | First Come First Served |
| permanent, 0x00-0x3f | Standards Action or IESG Approval |
| permanent, greater than 0x3f | Specification Required |
| first unassigned codepoint | Standards Action |
| Value | Frame Type Name | Status | Specification | Date | Change Controller | Contact | Notes |
|---|---|---|---|---|---|---|---|
| 0x00 | PADDING | permanent | RFC 9000, Section 19.1 | 2021-02-11 | IETF | QUIC working group | |
| 0x01 | PING | permanent | RFC 9000, Section 19.2 | 2021-02-11 | IETF | QUIC working group | |
| 0x02-0x03 | ACK | permanent | RFC 9000, Section 19.3 | 2021-02-11 | IETF | QUIC working group | |
| 0x04 | RESET_STREAM | permanent | RFC 9000, Section 19.4 | 2021-02-11 | IETF | QUIC working group | |
| 0x05 | STOP_SENDING | permanent | RFC 9000, Section 19.5 | 2021-02-11 | IETF | QUIC working group | |
| 0x06 | CRYPTO | permanent | RFC 9000, Section 19.6 | 2021-02-11 | IETF | QUIC working group | |
| 0x07 | NEW_TOKEN | permanent | RFC 9000, Section 19.7 | 2021-02-11 | IETF | QUIC working group | |
| 0x08-0x0f | STREAM | permanent | RFC 9000, Section 19.8 | 2021-02-11 | IETF | QUIC working group | |
| 0x10 | MAX_DATA | permanent | RFC 9000, Section 19.9 | 2021-02-11 | IETF | QUIC working group | |
| 0x11 | MAX_STREAM_DATA | permanent | RFC 9000, Section 19.10 | 2021-02-11 | IETF | QUIC working group | |
| 0x12-0x13 | MAX_STREAMS | permanent | RFC 9000, Section 19.11 | 2021-02-11 | IETF | QUIC working group | |
| 0x14 | DATA_BLOCKED | permanent | RFC 9000, Section 19.12 | 2021-02-11 | IETF | QUIC working group | |
| 0x15 | STREAM_DATA_BLOCKED | permanent | RFC 9000, Section 19.13 | 2021-02-11 | IETF | QUIC working group | |
| 0x16-0x17 | STREAMS_BLOCKED | permanent | RFC 9000, Section 19.14 | 2021-02-11 | IETF | QUIC working group | |
| 0x18 | NEW_CONNECTION_ID | permanent | RFC 9000, Section 19.15 | 2021-02-11 | IETF | QUIC working group | |
| 0x19 | RETIRE_CONNECTION_ID | permanent | RFC 9000, Section 19.16 | 2021-02-11 | IETF | QUIC working group | |
| 0x1a | PATH_CHALLENGE | permanent | RFC 9000, Section 19.17 | 2021-02-11 | IETF | QUIC working group | |
| 0x1b | PATH_RESPONSE | permanent | RFC 9000, Section 19.18 | 2021-02-11 | IETF | QUIC working group | |
| 0x1c-0x1d | CONNECTION_CLOSE | permanent | RFC 9000, Section 19.19 | 2021-02-11 | IETF | QUIC working group | |
| 0x1e | HANDSHAKE_DONE | permanent | RFC 9000, Section 19.20 | 2021-02-11 | IETF | QUIC working group | |
| 0x1f | IMMEDIATE_ACK | provisional | draft-ietf-quic-ack-frequency-07 | 2023-10-27 | Mirja Kühlewind | Mirja Kühlewind | |
| 0x24 | RESET_STREAM_AT | permanent | RFC-ietf-quic-reliable-stream-reset-11 | 2026-09-28 | IETF | QUIC working group | |
| 0x30-0x31 | DATAGRAM | permanent | RFC 9221 | 2021-10-20 | IETF | QUIC working group | |
| 0x3e-0x3f | PATH_ACK | permanent | RFC-ietf-quic-multipath-21, Section 4.1 | 2026-03-30 | IETF | QUIC working group | |
| 0xaf | ACK_FREQUENCY | provisional | draft-ietf-quic-ack-frequency-07 | 2023-10-27 | Mirja Kühlewind | Mirja Kühlewind | |
| 0x3e75 | PATH_ABANDON | permanent | RFC-ietf-quic-multipath-21, Section 4.2 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e76 | PATH_STATUS_BACKUP | permanent | RFC-ietf-quic-multipath-21, Section 4.3 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e77 | PATH_STATUS_AVAILABLE | permanent | RFC-ietf-quic-multipath-21, Section 4.3 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e78 | PATH_NEW_CONNECTION_ID | permanent | RFC-ietf-quic-multipath-21, Section 4.4 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e79 | PATH_RETIRE_CONNECTION_ID | permanent | RFC-ietf-quic-multipath-21, Section 4.5 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e7a | MAX_PATH_ID | permanent | RFC-ietf-quic-multipath-21, Section 4.6 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e7b | PATHS_BLOCKED | permanent | RFC-ietf-quic-multipath-21, Section 4.7 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e7c | PATH_CIDS_BLOCKED | permanent | RFC-ietf-quic-multipath-21, Section 4.7 | 2026-03-30 | IETF | QUIC working group |
QUIC Transport Error Codes
Expert(s)
- Jana Iyengar, Ian Swett, Martin Thomson
Reference
- RFC 9000: QUIC: A UDP-Based Multiplexed and Secure Transport
Available Formats
| Range | Registration Procedures |
|---|---|
| provisional | Expert Review |
| provisional registration Date field update | First Come First Served |
| permanent, 0x00-0x3f | Standards Action or IESG Approval |
| permanent, greater than 0x3f | Specification Required |
| first unassigned codepoint | Standards Action |
| Value | Code | Description | Status | Specification | Date | Change Controller | Contact | Notes |
|---|---|---|---|---|---|---|---|---|
| 0x00 | NO_ERROR | No error | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x01 | INTERNAL_ERROR | Implementation error | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x02 | CONNECTION_REFUSED | Server refuses a connection | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x03 | FLOW_CONTROL_ERROR | Flow control error | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x04 | STREAM_LIMIT_ERROR | Too many streams opened | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x05 | STREAM_STATE_ERROR | Frame received in invalid stream state | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x06 | FINAL_SIZE_ERROR | Change to final size | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x07 | FRAME_ENCODING_ERROR | Frame encoding error | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x08 | TRANSPORT_PARAMETER_ERROR | Error in transport parameters | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x09 | CONNECTION_ID_LIMIT_ERROR | Too many connection IDs received | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x0a | PROTOCOL_VIOLATION | Generic protocol violation | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x0b | INVALID_TOKEN | Invalid Token received | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x0c | APPLICATION_ERROR | Application error | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x0d | CRYPTO_BUFFER_EXCEEDED | CRYPTO data buffer overflowed | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x0e | KEY_UPDATE_ERROR | Invalid packet protection update | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x0f | AEAD_LIMIT_REACHED | Excessive use of packet protection keys | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x10 | NO_VIABLE_PATH | No viable network path exists | permanent | RFC 9000, Section 20 | 2021-02-11 | IETF | QUIC working group | |
| 0x11 | VERSION_NEGOTIATION_ERROR | Error negotiating version | permanent | RFC 9368 | 2022-12-16 | IETF | QUIC working group | |
| 0x0100-0x01ff | CRYPTO_ERROR | TLS alert code | permanent | RFC 9000, Section 20 | 2021-05-18 | IETF | QUIC working group | |
| 0x3e | APPLICATION_ABANDON_PATH | Path abandoned at the application's request | permanent | RFC-ietf-quic-multipath-21, Section 4.2.1 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e75 | PATH_RESOURCE_LIMIT_REACHED | Path abandoned due to resource limitations in the transport | permanent | RFC-ietf-quic-multipath-21, Section 4.2.1 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e76 | PATH_UNSTABLE_OR_POOR | Path abandoned due to unstable interfaces or poor performance | permanent | RFC-ietf-quic-multipath-21, Section 4.2.1 | 2026-03-30 | IETF | QUIC working group | |
| 0x3e77 | NO_CID_AVAILABLE_FOR_PATH | Path abandoned due to no available connection IDs for the path | permanent | RFC-ietf-quic-multipath-21, Section 4.2.1 | 2026-03-30 | IETF | QUIC working group | |
| 0x4143414213370002 | BDP_TOKEN_ERROR | The BDP token received from the client is invalid | provisional | draft-misell-quic-bdp-token-02 | 2024-01-24 | Q Misell | Q Misell |
Contact Information
| Name | Contact URI | Last Updated |
|---|---|---|
| David Schinazi | dschinazi.ietf&gmail.com | 2022-06-02 |
| quic-iana&google.com | 2025-09-23 | |
| Mirja Kühlewind | ietf&kuehlewind.net | 2023-10-27 |
| Q Misell | q&as207960.net | 2024-01-24 |
| QUIC working group | quic&ietf.org |