frostfs-http-gw/cmd/http-gw/server_test.go

package main

import (
	"context"
	"crypto/rand"
	"crypto/rsa"
	"crypto/tls"
	"crypto/x509"
	"crypto/x509/pkix"
	"encoding/pem"
	"fmt"
	"math/big"
	"net"
	"net/http"
	"os"
	"path"
	"testing"
	"time"

	"github.com/stretchr/testify/require"
	"golang.org/x/net/http2"
)

const (
	expHeaderKey   = "Foo"
	expHeaderValue = "Bar"
)

func TestHTTP2TLS(t *testing.T) {
	ctx := context.Background()
	certPath, keyPath := prepareTestCerts(t)

	srv := &http.Server{
		Handler: http.HandlerFunc(testHandler),
	}

	tlsListener, err := newServer(ctx, ServerInfo{
		Address: ":0",
		TLS: ServerTLSInfo{
			Enabled:  true,
			CertFile: certPath,
			KeyFile:  keyPath,
		},
	})
	require.NoError(t, err)
	port := tlsListener.Listener().Addr().(*net.TCPAddr).Port
	addr := fmt.Sprintf("https://localhost:%d", port)

	go func() {
		_ = srv.Serve(tlsListener.Listener())
	}()

	// Server is running, now send HTTP/2 request

	tlsClientConfig := &tls.Config{
		InsecureSkipVerify: true,
	}

	cliHTTP1 := http.Client{Transport: &http.Transport{TLSClientConfig: tlsClientConfig}}
	cliHTTP2 := http.Client{Transport: &http2.Transport{TLSClientConfig: tlsClientConfig}}

	req, err := http.NewRequest("GET", addr, nil)
	require.NoError(t, err)
	req.Header[expHeaderKey] = []string{expHeaderValue}

	resp, err := cliHTTP1.Do(req)
	require.NoError(t, err)
	require.Equal(t, http.StatusOK, resp.StatusCode)

	resp, err = cliHTTP2.Do(req)
	require.NoError(t, err)
	require.Equal(t, http.StatusOK, resp.StatusCode)
}

func testHandler(resp http.ResponseWriter, req *http.Request) {
	hdr, ok := req.Header[expHeaderKey]
	if !ok || len(hdr) != 1 || hdr[0] != expHeaderValue {
		resp.WriteHeader(http.StatusBadRequest)
	} else {
		resp.WriteHeader(http.StatusOK)
	}
}

func prepareTestCerts(t *testing.T) (certPath, keyPath string) {
	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
	require.NoError(t, err)

	template := x509.Certificate{
		SerialNumber:          big.NewInt(1),
		Subject:               pkix.Name{CommonName: "localhost"},
		NotBefore:             time.Now(),
		NotAfter:              time.Now().Add(time.Hour * 24 * 365),
		KeyUsage:              x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
		BasicConstraintsValid: true,
	}

	derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &privateKey.PublicKey, privateKey)
	require.NoError(t, err)

	dir := t.TempDir()
	certPath = path.Join(dir, "cert.pem")
	keyPath = path.Join(dir, "key.pem")

	certFile, err := os.Create(certPath)
	require.NoError(t, err)
	defer certFile.Close()

	keyFile, err := os.Create(keyPath)
	require.NoError(t, err)
	defer keyFile.Close()

	err = pem.Encode(certFile, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
	require.NoError(t, err)

	err = pem.Encode(keyFile, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(privateKey)})
	require.NoError(t, err)

	return certPath, keyPath
}