Fallback

A group of proxies with a test URL, similar to the Auto Select group.

Unlike the Auto Select group, the selection change takes effect immediately as long as any proxy test succeeds.

Therefore, proxy order is critical in a fallback group; you should place better proxies first.

note

Fallback group selection cannot be changed manually.

Example

Profile Example

[Proxy Group]
FallbackGroup = fallback, ProxySOCKS5, ProxySOCKS5TLS, url=http://www.gstatic.com/generate_204, interval=600, timeout=5

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

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} = fallback, {proxies, ...}, {policy-path}, {policy-regex-filter}, {url}, {interval}, {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.
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.