Proxy - Make Reverse Proxy easier to use

Installation

To install the package, run:

go get -u github.com/go-zoox/proxy

Quick Start

package main

import (
	"fmt"
	"net/http"

	"github.com/go-zoox/proxy"
)

func main() {
	fmt.Println("Starting proxy at http://127.0.0.1:9999 ...")

	http.ListenAndServe(":9999", proxy.New(&proxy.Config{
		OnRequest: func(req *http.Request) error {
			req.URL.Host = "127.0.0.1:8080"
			return nil
		},
	}))
}

// visit http://127.0.0.1:9999/ip => http://127.0.0.1:8080/ip
// curl -v http://127.0.0.1:9999/ip

Best Practice

1. Single Host => All traffic to a single target with path

package main

import (
	"fmt"
	"net/http"

	"github.com/go-zoox/proxy"
)

func main() {
	target := "https://httpbin.org"

	fmt.Println("Starting proxy at http://127.0.0.1:9999 ...")
	http.ListenAndServe(":9999", proxy.NewSingleHost(target))
}

2. Single Host => All traffic to a single target with rewrite

package main

import (
	"fmt"
	"net/http"

	"github.com/go-zoox/proxy"
	"github.com/go-zoox/proxy/utils/rewriter"
)

func main() {
	target := "https://httpbin.org"

	fmt.Println("Starting proxy at http://127.0.0.1:9999 ...")
	http.ListenAndServe(":9999", proxy.NewSingleHost(target, &proxy.SingleHostConfig{
		Rewrites: rewriter.Rewriters{
			{
				From: "/api/ip",
				To:   "/ip",
			},
			{
				From: "/api/headers",
				To:   "/headers",
			},
			{
				From: "/api/v2/(.*)",
				To:   "/$1",
			},
		},
	}))
}

3. Multiple Hosts => All traffic to multiple targets

package main

import (
	"fmt"
	"net/http"

	"github.com/go-zoox/proxy"
)

func main() {
	fmt.Println("Starting proxy at http://127.0.0.1:9999 ...")
	
	http.ListenAndServe(":9999", proxy.NewMultiHosts(&proxy.MultiHostsConfig{
		Routes: []proxy.MultiHostsRoute{
			{
				Host: "httpbin1.go-zoox.work",
				Backend: proxy.MultiHostsRouteBackend{
					ServiceProtocol: "https",
					ServiceName:     "httpbin.zcorky.com",
					ServicePort:     443,
				},
			},
			{
				Host: "httpbin2.go-zoox.work",
				Backend: proxy.MultiHostsRouteBackend{
					ServiceProtocol: "https",
					ServiceName:     "httpbin.org",
					ServicePort:     443,
				},
			},
		},
	}))
}

Inspiration

• Go httputil.ReverseProxy

License

GoZoox is released under the MIT License.