Version:

constant TRUSTED_PROXIES

Ruby on Rails 3.2.22.5

Since v3.2.22.5

Available in: v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

IP addresses that are “trusted proxies” that can be stripped from the comma-delimited list in the X-Forwarded-For header. See also: en.wikipedia.org/wiki/Private_network#Private_IPv4_address_spaces