Is it possible to proxy a websocket connection from the client side?

Question

Here's the scenario. We have a webapp that communicates actions bidirectionally through websockets. I was wondering if it is possible to build a separate program (or use something existing) to "listen" in on the connection and log the messages of that link. Preferably it would be resident on the client side. Is this possible?

The idea is, we want to know every message that goes across the ws without having to modify either program to install this logging mechanism.

Answer 1

Yes it is. After a few days of playing around, you can use node-http-proxy to set up a proxy using node's socket library. This npm package also includes websocket proxying through HTTPS or HTTP.