Auto Select

A group of proxies with a test URL.

After the VPN starts, an HTTP HEAD request is sent to the test URL. The latency is recorded when a successful response is received.

The proxy with the lowest latency is selected for the group.

The test runs at regular intervals.

• Reference: https://en.wikipedia.org/wiki/Regular_expression
• Reference: https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/HEAD

note

Auto Select group selection cannot be changed manually.

Example

Profile Example

[Proxy Group]
AutoTestGroup = url-test, ProxySOCKS5, ProxySOCKS5TLS, url=http://www.gstatic.com/generate_204, interval=600, tolerance=100, timeout=5, hidden=true

[Rule]
# Traffic matching 'www.google.com' will be redirected through AutoTestGroup's selected proxy
DOMAIN, www.google.com, AutoTestGroup

Policy Path Example

ProxyHTTP = http, 1.2.3.4, 443, username, password
ProxyHTTPS = https, 1.2.3.4, 443, username, password, skip-cert-verify=true, sni=www.google.com
ProxySOCKS5 = socks5, 1.2.3.4, 443, username, password, udp-relay=false

This is similar to the [Proxy] section definition but without the section header.

Using a policy path separates proxies and rules definitions, reducing profile complexity.

Format

{group name} = url-test, {proxies, ...}, {policy-path}, {policy-regex-filter}, {url}, {interval}, {tolerance}, {timeout}, hidden = {hidden}, include-all-proxies = {include-all-proxies}, include-other-group = "{include-other-group}"

Parameters

Name	Value	Mandatory	Note
group name	-	true	Name of the group; serves as the key.
proxies	-	true	A list of proxy names defined in the [Proxy] section, separated by commas.
policy-path	-	false	A URL pointing to a list of proxies. Content format is described above.
policy-regex-filter	-	false	Applicable if policy-path/include-all-proxies/include-other-group is defined. A regular expression applied to proxy names; only proxies matching the expression are included. Note: This is a full-match regular expression.
url	http scheme url	false	Test URL used for the HTTP HEAD request. If the URL is not defined, 'proxy-test-url' from the [General] section is used. If 'proxy-test-url' is also undefined, 'http://www.gstatic.com/generate_204' is used.
interval	-	false	Unit: seconds. Defines the test interval. Default value: 600.
tolerance	-	false	Unit: milliseconds. Proxy selection only changes when the new selected proxy has a lower latency than the current proxy minus this value. Default value: 100.
timeout	-	false	Unit: seconds. Tests exceeding this duration are treated as failures. Default value: 5.
hidden	true false	false	Whether to display this proxy group in the user interface. Even if set to false, the group still takes effect.
include-all-proxies	true false	false	Includes all proxies defined in the profile. Can be used with policy-regex-filter to filter specific proxies.
include-other-group	-	false	Includes proxies from other groups specified by name. Can be used with policy-regex-filter. Multiple group names can be separated by commas.

caution

Only HTTP scheme URLs are allowed as test URLs. HTTPS and other schemes are not supported.

tip

proxies, policy-path, include-all-proxies, and include-other-group can be used together in the same proxy group.

tip

You can use a profile URL as a policy path URL; only proxies defined in the [Proxy] section will be used.