Nginx module for embedding Clojure or Java or Groovy programs
...Tomcat 8 embedding support (so servlet 3.1/jsp/sendfile/JSR-356 WebSocket work within nginx!). Dynamic proxying by using Clojure / Java / Groovy to write a simple nginx rewrite handler to set var or return errors before a proxy pass or content ring handler. The non-blocking coroutine-based socket is Compatible with Java Socket API and works well with largely existing java libraries such as apache HTTP client, mysql jdbc drivers. With this feature, one java main thread can handle thousands of connections. Handle multiple sockets parallel in sub coroutines.
SOCKS Server and Library for Java. Support for versions 4 and 5 of SOCKS protocol. Designed to be easily expandable to support different encryption/authentication/authorization methods. Sample server and client are available.
SocketProxy is a multi-threaded server for monitoring and logging socket traffic. Custom handlers may be written in Java to examine or modify traffic flowing in or out. The author uses it routinely to capture web service and RDBMS SQL traffic.