simpleserver.go

package main

import (
	"fmt"
	"log"
	"net/http"
)

const response = `{
  "queryID": 42,
  "items": [
    {
      "itemID": "fd7d35de27f34fdab4af02b371cfc596",
      "type": "element"
    }
  ]
}`

func main() {

	port := ":8080"
	pattern := "/"
	http.HandleFunc(pattern, func(writer http.ResponseWriter, request *http.Request) {
		writer.Write([]byte(response))
	})

	fmt.Printf("Now serving http://localhost%v%v\n", port, pattern)
	log.Fatal(http.ListenAndServe(port, nil))
}