Go Domino Server

server.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"strings"
)

func main() {
	http.HandleFunc("/", handler)
	fmt.Println("initialise")
	log.Panic(http.ListenAndServe(":9001", nil))
}

func handler(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()

	hostList := strings.Split(q.Get("a"), ",")
	if hostList[0] == "" {
		fmt.Fprintf(w, "Sam's Laptop has terminated your req")
		return
	}
	nextTarget := hostList[0]
	rest := hostList[1:]
	nextURL := fmt.Sprintf("http://192.168.21.%s:9001/?a=%s", nextTarget, strings.Join(rest, ","))
	res, err := http.DefaultClient.Get(nextURL)
	if err != nil {
		fmt.Fprintf(w, err.Error())
		return
	}
	defer res.Body.Close()
	body, _ := ioutil.ReadAll(res.Body)

	output := fmt.Sprintf("%s this is Sam's Laptop", body)
	fmt.Fprintf(w, output)
}