http Share With Trace (golang)

httpShareWithTrace.go

/*
File      : httpShareWithTrace.go
Author    : Mike
E-Mail    : Mike_Zhang@live.com
*/
package main
import (
    "net/http"
    "os"
    "strings"
    "log"
)
type TraceHandler struct {
    h http.Handler
}
func (r TraceHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
        println("get",req.URL.Path," from ",req.RemoteAddr)
        r.h.ServeHTTP(w, req)
}
func main() {
        port := "8080"//Default port 
        iflen(os.Args)>1 { port = strings.Join(os.Args[1:2],"")}
        h := http.FileServer(http.Dir("."))
        http.Handle("/", TraceHandler{h})
        println("Listening on port ",port,"...")
        log.Fatal("ListenAndServe: ", http.ListenAndServe(":"+port, nil))
}