sing-box/docs/configuration/outbound/urltest.md

Structure

{
  "type": "urltest",
  "tag": "auto",
  
  "outbounds": [
    "proxy-a",
    "proxy-b",
    "proxy-c"
  ],
  "url": "",
  "interval": "",
  "tolerance": 0,
  "idle_timeout": "",
  "interrupt_exist_connections": false
}

Fields

outbounds

==Required==

List of outbound tags to test.

url

The URL to test. https://www.gstatic.com/generate_204 will be used if empty.

interval

The test interval. 3m will be used if empty.

tolerance

The test tolerance in milliseconds. 50 will be used if empty.

idle_timeout

The idle timeout. 30m will be used if empty.

interrupt_exist_connections

Interrupt existing connections when the selected outbound has changed.

Only inbound connections are affected by this setting, internal connections will always be interrupted.