Node.js proxy and oauth

I have a small node.js application that uses oAuth quite heavily and I came into a problem: it appears that server where I want to install it is hidden behind proxy. And now: I have to rewrite part of code to use a proxy and I have a question about approach:

I'm using node-oauth, but I believe it doesn't support proxying. I had already overridden it a bit to support fetching binary data through oAuth, but now:

• should I clone the whole library and change it to my needs and put it inside my app
• write oauth library by myself from scratch, or
• is there a better way to solve this problem?

I would love to know how would you solve this problem in terms of maintenance in the future, good practices and stuff.