node-configurable-http-proxy 4.5.0+~cs15.1.4-1 (amd64 binary) in ubuntu kinetic

 configurable-http-proxy (CHP) provides you with a way to update and
 manage a proxy table using a command line interface or REST API. It
 is a simple wrapper around node-http-proxy. node-http-proxy is an
 HTTP programmable proxying library that supports websockets and is
 suitable for implementing components such as reverse proxies and load
 balancers. By wrapping node-http-proxy, configurable-http-proxy
 extends this functionality to JupyterHub deployments.
 .
 Node.js is an event-based server-side JavaScript engine.