String Matcher
==============

:ref:`StringMatcher <envoy_v3_api_msg_type.matcher.v3.StringMatcher>` can be configured
for one of the commonly used modes, or :ref:`extended for custom usecases
<envoy_v3_api_field_type.matcher.v3.StringMatcher.custom>`.

Envoy includes an :ref:`extension for running a Lua script
<envoy_v3_api_msg_extensions.string_matcher.lua.v3.Lua>` to determine
whether a string matches.