HTTP

package main

import (
    "log"
    "net/http"
)

func main() {
    // route
    http.HandleFunc("/hello", helloHandler)
    http.HandleFunc("/bad", badHandler)
    http.HandleFunc("/good", goodHandler)

    err := http.ListenAndServe(":8080", nil)
    log.Fatal(err)
}

func helloHandler(writer http.ResponseWriter, request *http.Request) {
    write(writer, "Hello")
}

func badHandler(writer http.ResponseWriter, request *http.Request) {
    write(writer, "Bad")
}

func goodHandler(writer http.ResponseWriter, request *http.Request) {
    write(writer, "Good")
}

func write(writer http.ResponseWriter, str string) {
    _, err := writer.Write([]byte(str))
    if err != nil {
        log.Fatal(err)
    }
}