Pass some custom header.

[trofim24]

Pass some custom header.

[brycekahle]

What proxy is setting those headers?

[trofim24]

What proxy is setting those headers?

These headers are used in conjunction with Amazon Elastic Load Balancing

[brycekahle]

I do not see x-forwarded-host in that documentation. We already allow x-forwarded-for and x-forwarded-proto.

[trofim24]

Apache Module for x-forwarded-host
Amazon Elastic Load Balancing for x-forwarded-port

If you use a front-end service like Amazon, Apigee or other as the front-end to your APIs, you will need something like x-forwarded-host to understand what hostname was used to connect to the API, because Apigee gets configured with whatever your backend DNS is, nginx and your app stack only see the Host header as your backend DNS name, not the hostname that was called in the first place.
X-Forwarded-Port gives the port the client connected to on the proxy (e.g. 80 or 443)

[agolybev]

Hi @brycekahle, what about accept pull request?