camouflage

An HTTP proxy package for intercepting, modifying traffic and forwarding it via a reverse proxy server (like HAproxy).

This package is extended upon elazarl's goproxy. Full functionality of it can be access through GoProxy variable, But ctx.UserData must not be altered.

package main

import (
	"flag"
	"log"
	"net/http"
	"net/url"

	"github.com/elazarl/goproxy"
	"github.com/rahulwa/camouflage/proxy"
)

func init() {
	rProxyServer, err := url.Parse("http://127.0.0.1:8081")
	if err != nil {
		log.Fatal("main: init: unable to parse reverseproxyadress")
	}
	proxy.Conf = &proxy.Config{
		RedisControllerChannel: "proxiesChannel",
		ReverseProxyServer:     *rProxyServer,
		ProxyPort:              8080,
		MetricPort:             9099,
		Verbose:                false,
		DumpInWireFormat:       false,
	}
	flag.Parse()
}

func main() {
  // This line will add X-GoProxy: yxorPoG-X header to all requests sent through the proxy. 
  proxy.GoProxy.OnRequest().DoFunc(
    func(r *http.Request,ctx *goproxy.ProxyCtx)(*http.Request,*http.Response) {
        r.Header.Set("X-GoProxy","yxorPoG-X")
        return r,nil
  })
  // Start the proxy server 
  proxy.Proxy(nil, nil)
}

For more example, see examples directory and documentation.

Features

• supports regular HTTP proxy, HTTPS through CONNECT, and "hijacking" HTTPS connection using "Man in the Middle" style attack (thanks to goproxy).
• requests and responses are fully customizable (thanks to goproxy).
• send a tracking uuid with X-Camouflage-Context header on response.
• proxy chaining with the help of any reverse proxy.
• save/send requests and responses to nearly anywhere with the help of fluentd.
• metrics exposures via prometheus-client.
• publishes json on the configured redis Channel - containing the destination site, reverse-proxy-server and status-code for each bad response happens from destination-site with the status code between 400 to 599 for real-time analysis or action.