Question

Load balancer proxy protocol with Express.js Node app

Posted December 23, 2019 431 views
Load Balancing

Anyone got a DO Load Balancer w/ Proxy Protocol to work with a Droplet running a Express.js website/API? As soon as I turn on proxy protocol, the LB droplet status goes unhealthy. I’ve tried adding app.set('trust proxy', true); to my Express setup as per docs (https://expressjs.com/en/guide/behind-proxies.html) but no luck.

I really don’t want to run NGINX or Apache in-front of my Dockerized Node app.

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2 answers

It looks like the http, https, or http2 package you are using from Node internals need wrapped with something like this fork https://github.com/cusspvz/proxywrap. I have yet to test, but this seems promising.

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