1 package main
 2 
 3 import (
 4     "io"
 5     "log"
 6     "net/http"
 7     "strconv"
 8     "fmt"
 9 )
10 
11 var iCnt int = 0;
12 
13 func helloHandler(w http.ResponseWriter, r * http.Request) {
14     iCnt++;
15     str := "Hello world ! friend(" + strconv.Itoa(iCnt) + ")"
16     io.WriteString(w, str)
17     fmt.Println(str)
18 }
19 
20 func main() {
21     ht := http.HandlerFunc(helloHandler)
22     if ht != nil {
23         http.Handle("/hello", ht)
24     }
25     err := http.ListenAndServe(":8090", nil)
26     if err != nil {
27         log.Fatal("ListenAndServe: ", err.Error())
28     }
29 }