# Copyright 1999-2017 Gentoo Foundation. # Distributed under the terms of the GNU General Public License v2 # This file contains descriptions of NGINX_MODULES_STREAM USE_EXPAND flags. # Keep it sorted. access - This module allows limiting access to certain client addresses. geo - This module creates variables, whose values depend on the IP-address of the client. geoip - This module creates variables based on the IP-address of the client matched against the MaxMind GeoIP binary files. geoip2 - This module creates variables based on the IP-address of the client matched against the MaxMind GeoIP2 binary files. javascript - This module implements location and variable handlers in nginScript. limit_conn - This module is used to limit the number of connections per the defined key. map - This module allows you to classify, or map a set of values into a different set of values and store the result in a variable. realip - This module allows to change the client's IP address to value from request header (e. g. X-Real-IP or X-Forwarded-For). return - This module allows sending a specified value to the client and then closing the connection. split_clients - This module provides A/B testing support. ssl_preread - This module allows extracting information from the ClientHello message without terminating SSL/TLS. upstream_hash - This module provides the ability to distribute upstream requests based on hashed key value. upstream_least_conn - This module provides the ability to distribute upstream requests using load balancing methods. upstream_zone - This module makes it possible to define a shared memory zone that keeps the group's configuration and run-time state that are shared between worker processes.