Auto select

A group of proxies with a test url in it.

After VPN started, a HTTP HEAD request will be sent towards the test url, delay will be recorded when success response reach.

Proxy with the shortest delay will be the selection of the group.

The test will be triggered at intervals constantly.

• 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 can not be changed manually

Sample

Profile sample

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

[Rule]
# traffic match 'www.google.com' will be redirect through AutoTestGroup's selected proxy
DOMAIN, www.google.com, AutoTestGroup

Policy path sample

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

Just like [Proxy] Section definition but without section header in it.

Use policy path can separate proxies and rules definition, and reduce 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}"

Param

Name	Value	Mandatory	Note
group name	-	true	name of group, will be used like a key to the group
proxies	-	true	A list of proxy name defined in [Proxy] section, divided by comma
policy-path	-	false	A list of proxy defined in url content Content format will be presented below
policy-regex-filter	-	false	Usable if policy-path/include-all-proxies/include-other-group defined. A regular expression which will apply on proxy name, only proxies which match expression will be reserved. Be aware this is a complete matching regular expression.
url	http scheme url	false	Test url which is used by HTTP HEAD request. If url is not defined, 'proxy-test-url' defined in [General] section will be used. If 'proxy-test-url' is not defined either, 'http://www.gstatic.com/generate_204' will be used.
interval	-	false	Unit: seconds, define test trigger intervals. Default value: 600
tolerance	-	false	Unit: millisecond Proxy selection is only changed when new selected proxy has a lower delay than previous proxy minus this value. Default value: 100
timeout	-	false	Unit: seconds Test exceed this maximum allowed duration will be treated as failure. Default value: 5
hidden	true false	false	Whether to display this proxy group in user interface, even set to false, this group will still take effect.
include-all-proxies	true false	false	Include all proxies defined in whole profile, can be used with policy-regex-filter to filter some of the proxies
include-other-group	-	false	Include proxies from other group specified by name, can by used with policy-regex-filter to filter some of the proxies, group name can be more than one and split by comma

caution

Only HTTP scheme url is allowed as test url, HTTPS and any other types of scheme url will not be 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 policy path url, only proxies defined in [Proxy] section will be used