Number | Name | Meaning | Format Reference |
---|---|---|---|
0 | mandatory | Mandatory keys in this RR | (This document) |
1 | alpn | Additional supported protocols | (This document) |
2 | no-default-alpn | No support for default protocol | (This document) |
3 | port | Port for alternative endpoint | (This document) |
4 | ipv4hint | IPv4 address hints | (This document) |
5 | ech | Encrypted ClientHello info | (This document) |
6 | ipv6hint | IPv6 address hints | (This document) |
65280-65534 | N/A | Private Use | (This document) |
65535 | N/A | Reserved ("Invalid key") | (This document) |
TYPE | Meaning | Reference |
---|---|---|
SVCB | Service Location and Parameter Binding | (This document) |
HTTPS | HTTPS Service Location and Parameter Binding | (This document) |
RR TYPE | _NODE NAME | Meaning | Reference |
---|---|---|---|
HTTPS | _https | HTTPS SVCB info | (This document) |
Mapped scheme | "https" |
Other affected schemes | "http", "wss", "ws", (other HTTP-based) |
RR type | HTTPS (65) |
Name prefix | None for port 443, else _$PORT._https |
Automatically Mandatory Keys | port, no-default-alpn |
SvcParam defaults | alpn: ["http/1.1"] |
Special behaviors | HTTP to HTTPS upgrade |