reverseproxy (This is a community driven project)

reserve proxy extension for Hertz

Install

go get github.com/hertz-contrib/reverseproxy

Quick Start

package main

import (
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/reverseproxy"
)

func main() {
	h := server.New()
	rp, _ := reverseproxy.NewSingleHostReverseProxy("http://localhost:8082/test")
	h.GET("/ping", rp.ServeHTTP)
	h.Spin()
}

Use tls

Currently netpoll does not support tls，we need to use the net (standard library)

package main

import (
	"github.com/cloudwego/hertz/pkg/app/client"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/network/standard"
	"github.com/hertz-contrib/reverseproxy"
)

func main() {
	h := server.New()
	rp, _ := reverseproxy.NewSingleHostReverseProxy("https://localhost:8082/test",client.WithDialer(standard.NewDialer()))
	h.GET("/ping", rp.ServeHTTP)
	h.Spin()
}

Use service discovery

Use nacos as example and more information refer to registry

package main

import (
	"github.com/cloudwego/hertz/pkg/app/client"
	"github.com/cloudwego/hertz/pkg/app/middlewares/client/sd"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/config"
	"github.com/cloudwego/hertz/pkg/protocol"
	"github.com/hertz-contrib/registry/nacos"
	"github.com/hertz-contrib/reverseproxy"
)

func main() {
	cli, err := client.NewClient()
	if err != nil{
		panic(err)
	}
	r, err := nacos.NewDefaultNacosResolver()
	if err != nil{
		panic(err)
	}
	cli.Use(sd.Discovery(r))
	h := server.New()
	rp, _ := reverseproxy.NewSingleHostReverseProxy("http://test.demo.api/test")
	rp.SetClient(cli)
	rp.SetDirector(func(req *protocol.Request){
		req.SetRequestURI(string(reverseproxy.JoinURLPath(req, rp.Target)))
		req.Header.SetHostBytes(req.URI().Host())
		req.Options().Apply([]config.RequestOption{config.WithSD(true)})
	})
	h.GET("/ping", rp.ServeHTTP)
	h.Spin()
}

Request/Response

ReverseProxy provides SetDirector、SetModifyResponse、SetErrorHandler to modify Request and Response.

Websocket Reverse Proxy

Websocket reverse proxy for Hertz, inspired by fasthttp-reverse-proxy

package main

import (
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/reverseproxy"
)

func main() {
	h := server.Default()
	h.GET("/backend", reverseproxy.NewWSReverseProxy("ws://example.com").ServeHTTP)
	h.Spin()
}

Configuration	Default	Description
WithDirector	nil	customize the forward header
WithDialer	gorillaws.DefaultDialer	for dialer customization
WithUpgrader	hzws.HertzUpgrader	for upgrader customization

More info

See example