diff --git a/proxy.go b/proxy.go
deleted file mode 100644
index 09a9e23..0000000
--- a/proxy.go
+++ /dev/null
@@ -1,70 +0,0 @@
-package main
-
-import (
-	"context"
-	"io"
-	"net"
-	"net/http"
-	"time"
-
-	"github.com/fangdingjun/go-log"
-)
-
-type proxy struct {
-	transport http.RoundTripper
-	addr      string
-	prefix    string
-	dialer    *net.Dialer
-	network   string
-}
-
-func newProxy(addr string, prefix string) *proxy {
-	p := &proxy{
-		addr:   addr,
-		prefix: prefix,
-		dialer: &net.Dialer{Timeout: 2 * time.Second},
-	}
-	if addr[0] == '/' {
-		p.network = "unix"
-	} else {
-		p.network = "tcp"
-	}
-	p.transport = &http.Transport{
-		DialContext:     p.dialContext,
-		MaxIdleConns:    5,
-		IdleConnTimeout: 30 * time.Second,
-	}
-	return p
-}
-
-func (p *proxy) dialContext(ctx context.Context,
-	network, addr string) (net.Conn, error) {
-	return p.dialer.DialContext(ctx, p.network, p.addr)
-}
-
-func (p *proxy) dial(network, addr string) (conn net.Conn, err error) {
-	return p.dialer.Dial(p.network, p.addr)
-}
-
-func (p *proxy) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	host, _, _ := net.SplitHostPort(r.RemoteAddr)
-	r.Header.Add("X-Forwarded-For", host)
-	r.URL.Scheme = "http"
-	r.URL.Host = r.Host
-	resp, err := p.transport.RoundTrip(r)
-	if err != nil {
-		log.Print(err)
-		w.WriteHeader(http.StatusBadGateway)
-		w.Write([]byte("<h1>502 Bad Gateway</h1>"))
-		return
-	}
-	header := w.Header()
-	for k, v := range resp.Header {
-		for _, v1 := range v {
-			header.Add(k, v1)
-		}
-	}
-	w.WriteHeader(resp.StatusCode)
-	io.Copy(w, resp.Body)
-	resp.Body.Close()
-}