Inspecting bodies and requests from various methods

log.md

$ for method in "PATCH" "DELETE" "POST" "GET" "PUT" "AMETHOD";do go run main.go --body hello --method $method >> log;done && cat log
PATCH / HTTP/1.1
Host: 127.0.0.1:64022
Accept-Encoding: gzip
Content-Length: 5
User-Agent: Go-http-client/1.1

hello
DELETE / HTTP/1.1
Host: 127.0.0.1:64028
Accept-Encoding: gzip
Content-Length: 5
User-Agent: Go-http-client/1.1

hello
POST / HTTP/1.1
Host: 127.0.0.1:64034
Accept-Encoding: gzip
Content-Length: 5
User-Agent: Go-http-client/1.1

hello
GET / HTTP/1.1
Host: 127.0.0.1:64040
Accept-Encoding: gzip
Content-Length: 5
User-Agent: Go-http-client/1.1

hello
PUT / HTTP/1.1
Host: 127.0.0.1:64046
Accept-Encoding: gzip
Content-Length: 5
User-Agent: Go-http-client/1.1

hello
AMETHOD / HTTP/1.1
Host: 127.0.0.1:64052
Accept-Encoding: gzip
Content-Length: 5
User-Agent: Go-http-client/1.1

hello

main.go

package main

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

func main() {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		dump, err := httputil.DumpRequest(r, true)
		if err != nil {
			http.Error(w, fmt.Sprint(err), http.StatusInternalServerError)
			return
		}
		w.Write(dump)
	}))
	defer ts.Close()

	var body string
	var method string
	flag.StringVar(&body, "body", "", "body to send")
	flag.StringVar(&method, "method", "POST", "method to use in client request")
	flag.Parse()

	req, err := http.NewRequest(method, ts.URL, strings.NewReader(body))
	if err != nil {
		log.Fatal(err)
	}
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		log.Fatal(err)
	}
	defer resp.Body.Close()

	slurp, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("%s\n", slurp)
}