Gin Proxy

server1.go

package main

import (
	"net/http"
	"net/http/httputil"
	"net/url"

	"github.com/gin-gonic/gin"
)

func proxy(c *gin.Context) {
	remote, err := url.Parse("http://localhost:8081")
	if err != nil {
		panic(err)
	}

	proxy := httputil.NewSingleHostReverseProxy(remote)
	proxy.Director = func(req *http.Request) {
		req.Header = c.Request.Header
		req.Host = remote.Host
		req.URL.Scheme = remote.Scheme
		req.URL.Host = remote.Host
		req.URL.Path = c.Param("proxy")
	}

	proxy.ServeHTTP(c.Writer, c.Request)
}

func formatResponse() gin.HandlerFunc {
	return func(c *gin.Context) {
		c.JSON(http.StatusCreated, gin.H{})
	}

}

func main() {
	r := gin.Default()

	r.Any("/*proxy", proxy, formatResponse())

	r.Run(":8080")
}

server2.go

package main

import (
	"net/http"

	"github.com/gin-gonic/gin"
)

func main() {

	r := gin.Default()

	r.Any("/*proxy", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"message": "pong",
		})
	})

	r.Run(":8081")
}