Hysteria 2

URI Scheme

The Hysteria 2 URI scheme is designed to provide a compact representation of the information required to connect to a Hysteria 2 server. It includes various parameters such as the server address, authentication credentials, obfuscation type and settings, and TLS configurations.

Structure

hysteria2://[auth]@[hostname]:[port]/?[key=value]&[key=value]...
hy2://[auth@]hostname[:port]/?[key=value]&[key=value]...

• Authentication - auth

Authentication credentials must be specified in the auth component of the URI. A special case occurs when the server uses userpass authentication; in this scenario, the auth component must be formatted as username:password.

• Hostname - hostname

The server's hostname and an optional port. If the port is omitted, it defaults to 443. The port section supports a "multi-port" format, which is a specialized address format:

example.com:1234,5678,9012
example.com:20000-50000
example.com:1234,5000-6000,7044,8000-9000
There is no limit to the number of ports specified.

The client will randomly select one of the specified ports for the initial connection and will periodically switch to a different port. The interval is controlled by the interval parameter (often referred to as mportHopInt) within the udphop section:

"udphop": {
  "port": "1234,5000-6000",
  "interval": "30"
}

Query Parameters

• obfs: The type of obfuscation used. Currently, only salamander is supported.

• obfs-password: The password required for the specified obfuscation type, if applicable.

• sni: Server Name Indication used for TLS connections. If the hostname is a domain name and sni is missing, the hostname will be used as the serverName.