example_test.go

// BSD 3-Clause License

// Copyright (c) 2021, James Bowes
// Copyright (c) 2023, Alexander Taraymovich, OffBlocks
// All rights reserved.

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:

// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.

// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.

// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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package httpsig_test

import (
	"fmt"
	"io"
	"net/http"
	"time"

	"github.com/offblocks/httpsig"
)

const secret = "support-your-local-cat-bonnet-store"

func Example_round_trip() {
	h := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/plain")
		_, _ = io.WriteString(w, "Your request has a valid signature!")
	})

	middleware := httpsig.NewVerifyMiddleware(httpsig.WithHmacSha256("key1", []byte(secret)))
	http.Handle("/", middleware(h))
	go func() { _ = http.ListenAndServe("127.0.0.1:1234", http.DefaultServeMux) }()

	// Give the server time to sleep. Terrible, I know.
	time.Sleep(100 * time.Millisecond)

	client := http.Client{
		// Wrap the transport:
		Transport: httpsig.NewSignTransport(http.DefaultTransport,
			httpsig.WithHmacSha256("key1", []byte(secret))),
	}

	resp, err := client.Get("http://127.0.0.1:1234/")
	if err != nil {
		fmt.Println("got err: ", err)
		return
	}
	defer resp.Body.Close()

	fmt.Println(resp.Status)

	// Output:
	// 200 OK
}