Echoes GET and POST requests.

http-test-harness.go

package main

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

func helloWorld(w http.ResponseWriter, r *http.Request) {
        if r.URL.Path != "/" {
                http.NotFound(w, r)
                return
        }
        switch r.Method {
        case "GET":
                for k, v := range r.URL.Query() {
                        fmt.Printf("%s: %s\n",k, v)
                }
                w.Write([]byte("Received a GET request\n"))
        case "POST":
                reqBody, err := ioutil.ReadAll(r.Body)
                if err != nil {
                        log.Fatal(err)
                }

                fmt.Printf("%s\n", reqBody)
                w.Write([]byte("Received a POST request\n"))
        default:
                w.WriteHeader(http.StatusNotImplemented)
                w.Write([]byte(http.StatusText(http.StatusNotImplemented)))
        }
}

func main() {
        http.HandleFunc("/", helloWorld)
        http.ListenAndServe(":8000", nil)
}