- access
- Add support for a simple host-based access control
- geo
- Add support for creating variables whose values depend on the client IP-address
- geoip
- Add support for creating variables whose values depend on the client IP-address, using the precompiled MaxMind databases
- geoip2
- Add support for creating variables whose values depend on the client IP-address, using the precompiled MaxMind GeoIP2 databases
- javascript
- Add support for implementing location and variable handlers in njs - a subset of the JavaScript language
- limit_conn
- Add support for limiting the number of connections per a defined key, e.g. the number of connections from a single IP address
- map
- Add support for creating variables whose values depend on the values of other variables
- pass
- Add support for passing the accepted connection directly to any configured listening socket in "http", "stream", "mail", and other similar modules
- realip
- Add support for setting the client address and optional port to those sent in the specified header field (e.g. "X-Real-IP" or "X-Forwarded-For")
- return
- Add support for sending a specified value to the client and then closing the connection
- set
- Add support for setting a value for a variable
- split_clients
- Add support for creating variables suitable for A/B testing, also known as split testing
- ssl
- Add SSL/TLS protocol support to a stream proxy server
- ssl_preread
- Add support for extracting information from the ClientHello message without terminating SSL/TLS connection
- upstream_hash
- Add support for distributing upstream requests based on hashed key value
- upstream_least_conn
- Add support for passing upstream requests to the server with the least number of active connections
- upstream_random
- Add support for passing upstream requests to a randomly selected server
- upstream_zone
- Add support for defining a shared memory zone that keeps the group's configuration and run-time state that are shared between worker processes