Proxer

Proxer is a simple Go server which works as a "proxy wrapper".
It forwards any request to a proxy using http_proxy and https_proxy environment variable.

Why?

Its main purpose is to serve as a workaround for environments and distributions which ignore or do not support *_proxy environment variables.
In some corporations, any request must be forwarded through a proxy to access the internet, and in the previous cases entire microservices and containers end up being isolated from the web.
For example, nginx ignores such environment variables, which prevents nginx-based api gateways (such as kong) to talk outside of the local server.

Run locally

Install this module

go install github.com/fenix-hub/proxer

Configure the following environment variables

HTTP_PROXY=http://<user>:<password>@<ip>:<port>
HTTPS_PROXY=https://<user>:<password>@<ip>:<port>

and run ${GOPATH}/proxer.

It will be running on localhost:8080 by default.

Run with Docker

Create an .env file in the root of this project accordingly

PROXER_PORT=<your port>		# default to 8080
HTTP_PROXY=http://<user>:<password>@<ip>:<port>
HTTPS_PROXY=https://<user>:<password>@<ip>:<port>

and run docker compose up -d.

It will be running on localhost:<your port> by default.

Usage

To define the target host, use X-ProxyTo-Schema and X-ProxyTo-Host.
Any other HTTP request Method, Headers, Path, Body will be forwarded untouched.

curl http://localhost:8080/get \
  -H 'X-ProxyTo-Schema: http' \
  -H 'X-ProxyTo-Host: httpbin.org'

will result in the (curl) equivalent:

curl --proxy-user <user>:<password> --proxy <http/https_proxy> -X <METHOD> -D <BODY> -H <HEADERS> http://httpbin.org/get