full_proxy.go

package main

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

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

func launchSecondServer() {

	router := gin.Default()

	router.Use(func(ctx *gin.Context) {
		ctx.JSON(
			http.StatusOK,
			gin.H{
				"Message": "Ok!",
				"Path":    ctx.Request.URL.String(),
			},
		)
	})

	router.Run(":8081")
}

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

	// Define the target URL where the requests will be forwarded
	target, _ := url.Parse("http://localhost:8081/base/")
	// Create a reverse proxy
	proxy := &httputil.ReverseProxy{
		Rewrite: func(r *httputil.ProxyRequest) {
			log.Println("Forwarding:", r.In.URL.String())
			r.SetURL(target)
		},
	}

	// Middleware to modify the request URL before forwarding
	router.Use(func(c *gin.Context) {
		// Forward the request to the target server
		proxy.ServeHTTP(c.Writer, c.Request)
	})

	// start the second server
	go launchSecondServer()

	// Start the Gin server
	router.Run(":8080")
}