Reverse Proxy

package main

import (
  "log"
  "net"
  "net/http"
  "time"

  "github.com/0mjs/zinc"
  "github.com/0mjs/zinc/middleware"
)

func main() {
  transport := &http.Transport{
    DialContext: (&net.Dialer{Timeout: 3 * time.Second}).DialContext,
    ResponseHeaderTimeout: 5 * time.Second,
    IdleConnTimeout:       90 * time.Second,
  }

  app := zinc.New()
  app.UsePrefix(
    "/api",
    middleware.ProxyWithConfig(middleware.ProxyConfig{
      Target: "http://127.0.0.1:9000",
      Rewrite: map[string]string{
        "/api/*": "/*",
      },
      Transport: transport,
    }),
  )

  log.Fatal(app.Listen(":8080"))
}

A request to /api/users is forwarded to http://127.0.0.1:9000/users. The client keeps talking to Zinc; this is an internal rewrite, not a redirect.

Use Targets for round-robin upstreams, Balancer for custom selection, ModifyResponse for response changes, and opt-in retries only for requests whose bodies can be replayed safely. See Proxy middleware for the complete configuration.