src/crypto/tls/tls_test.go - go - Git at Google

 // Copyright 2012 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

 package tls

 import (
 	"bytes"
 	"fmt"
 	"internal/testenv"
 	"io"
 	"net"
 	"strings"
 	"testing"
 	"time"
 )

 var rsaCertPEM = `-----BEGIN CERTIFICATE-----
 MIIB0zCCAX2gAwIBAgIJAI/M7BYjwB+uMA0GCSqGSIb3DQEBBQUAMEUxCzAJBgNV
 BAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBX
 aWRnaXRzIFB0eSBMdGQwHhcNMTIwOTEyMjE1MjAyWhcNMTUwOTEyMjE1MjAyWjBF
 MQswCQYDVQQGEwJBVTETMBEGA1UECAwKU29tZS1TdGF0ZTEhMB8GA1UECgwYSW50
 ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBANLJ
 hPHhITqQbPklG3ibCVxwGMRfp/v4XqhfdQHdcVfHap6NQ5Wok/4xIA+ui35/MmNa
 rtNuC+BdZ1tMuVCPFZcCAwEAAaNQME4wHQYDVR0OBBYEFJvKs8RfJaXTH08W+SGv
 zQyKn0H8MB8GA1UdIwQYMBaAFJvKs8RfJaXTH08W+SGvzQyKn0H8MAwGA1UdEwQF
 MAMBAf8wDQYJKoZIhvcNAQEFBQADQQBJlffJHybjDGxRMqaRmDhX0+6v02TUKZsW
 r5QuVbpQhH6u+0UgcW0jp9QwpxoPTLTWGXEWBBBurxFwiCBhkQ+V
 -----END CERTIFICATE-----
 `

 var rsaKeyPEM = `-----BEGIN RSA PRIVATE KEY-----
 MIIBOwIBAAJBANLJhPHhITqQbPklG3ibCVxwGMRfp/v4XqhfdQHdcVfHap6NQ5Wo
 k/4xIA+ui35/MmNartNuC+BdZ1tMuVCPFZcCAwEAAQJAEJ2N+zsR0Xn8/Q6twa4G
 6OB1M1WO+k+ztnX/1SvNeWu8D6GImtupLTYgjZcHufykj09jiHmjHx8u8ZZB/o1N
 MQIhAPW+eyZo7ay3lMz1V01WVjNKK9QSn1MJlb06h/LuYv9FAiEA25WPedKgVyCW
 SmUwbPw8fnTcpqDWE3yTO3vKcebqMSsCIBF3UmVue8YU3jybC3NxuXq3wNm34R8T
 xVLHwDXh/6NJAiEAl2oHGGLz64BuAfjKrqwz7qMYr9HCLIe/YsoWq/olzScCIQDi
 D2lWusoe2/nEqfDVVWGWlyJ7yOmqaVm/iNUN9B2N2g==
 -----END RSA PRIVATE KEY-----
 `

 // keyPEM is the same as rsaKeyPEM, but declares itself as just
 // "PRIVATE KEY", not "RSA PRIVATE KEY".  https://golang.org/issue/4477
 var keyPEM = `-----BEGIN PRIVATE KEY-----
 MIIBOwIBAAJBANLJhPHhITqQbPklG3ibCVxwGMRfp/v4XqhfdQHdcVfHap6NQ5Wo
 k/4xIA+ui35/MmNartNuC+BdZ1tMuVCPFZcCAwEAAQJAEJ2N+zsR0Xn8/Q6twa4G
 6OB1M1WO+k+ztnX/1SvNeWu8D6GImtupLTYgjZcHufykj09jiHmjHx8u8ZZB/o1N
 MQIhAPW+eyZo7ay3lMz1V01WVjNKK9QSn1MJlb06h/LuYv9FAiEA25WPedKgVyCW
 SmUwbPw8fnTcpqDWE3yTO3vKcebqMSsCIBF3UmVue8YU3jybC3NxuXq3wNm34R8T
 xVLHwDXh/6NJAiEAl2oHGGLz64BuAfjKrqwz7qMYr9HCLIe/YsoWq/olzScCIQDi
 D2lWusoe2/nEqfDVVWGWlyJ7yOmqaVm/iNUN9B2N2g==
 -----END PRIVATE KEY-----
 `

 var ecdsaCertPEM = `-----BEGIN CERTIFICATE-----
 MIIB/jCCAWICCQDscdUxw16XFDAJBgcqhkjOPQQBMEUxCzAJBgNVBAYTAkFVMRMw
 EQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBXaWRnaXRzIFB0
 eSBMdGQwHhcNMTIxMTE0MTI0MDQ4WhcNMTUxMTE0MTI0MDQ4WjBFMQswCQYDVQQG
 EwJBVTETMBEGA1UECBMKU29tZS1TdGF0ZTEhMB8GA1UEChMYSW50ZXJuZXQgV2lk
 Z2l0cyBQdHkgTHRkMIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBY9+my9OoeSUR
 lDQdV/x8LsOuLilthhiS1Tz4aGDHIPwC1mlvnf7fg5lecYpMCrLLhauAc1UJXcgl
 01xoLuzgtAEAgv2P/jgytzRSpUYvgLBt1UA0leLYBy6mQQbrNEuqT3INapKIcUv8
 XxYP0xMEUksLPq6Ca+CRSqTtrd/23uTnapkwCQYHKoZIzj0EAQOBigAwgYYCQXJo
 A7Sl2nLVf+4Iu/tAX/IF4MavARKC4PPHK3zfuGfPR3oCCcsAoz3kAzOeijvd0iXb
 H5jBImIxPL4WxQNiBTexAkF8D1EtpYuWdlVQ80/h/f4pBcGiXPqX5h2PQSQY7hP1
 +jwM1FGS4fREIOvlBYr/SzzQRtwrvrzGYxDEDbsC0ZGRnA==
 -----END CERTIFICATE-----
 `

 var ecdsaKeyPEM = `-----BEGIN EC PARAMETERS-----
 BgUrgQQAIw==
 -----END EC PARAMETERS-----
 -----BEGIN EC PRIVATE KEY-----
 MIHcAgEBBEIBrsoKp0oqcv6/JovJJDoDVSGWdirrkgCWxrprGlzB9o0X8fV675X0
 NwuBenXFfeZvVcwluO7/Q9wkYoPd/t3jGImgBwYFK4EEACOhgYkDgYYABAFj36bL
 06h5JRGUNB1X/Hwuw64uKW2GGJLVPPhoYMcg/ALWaW+d/t+DmV5xikwKssuFq4Bz
 VQldyCXTXGgu7OC0AQCC/Y/+ODK3NFKlRi+AsG3VQDSV4tgHLqZBBus0S6pPcg1q
 kohxS/xfFg/TEwRSSws+roJr4JFKpO2t3/be5OdqmQ==
 -----END EC PRIVATE KEY-----
 `

 var keyPairTests = []struct {
 	algo string
 	cert string
 	key  string
 }{
 	{"ECDSA", ecdsaCertPEM, ecdsaKeyPEM},
 	{"RSA", rsaCertPEM, rsaKeyPEM},
 	{"RSA-untyped", rsaCertPEM, keyPEM}, // golang.org/issue/4477
 }

 func TestX509KeyPair(t *testing.T) {
 	var pem []byte
 	for _, test := range keyPairTests {
 		pem = []byte(test.cert + test.key)
 		if _, err := X509KeyPair(pem, pem); err != nil {
 			t.Errorf("Failed to load %s cert followed by %s key: %s", test.algo, test.algo, err)
 		}
 		pem = []byte(test.key + test.cert)
 		if _, err := X509KeyPair(pem, pem); err != nil {
 			t.Errorf("Failed to load %s key followed by %s cert: %s", test.algo, test.algo, err)
 		}
 	}
 }

 func TestX509KeyPairErrors(t *testing.T) {
 	_, err := X509KeyPair([]byte(rsaKeyPEM), []byte(rsaCertPEM))
 	if err == nil {
 		t.Fatalf("X509KeyPair didn't return an error when arguments were switched")
 	}
 	if subStr := "been switched"; !strings.Contains(err.Error(), subStr) {
 		t.Fatalf("Expected %q in the error when switching arguments to X509KeyPair, but the error was %q", subStr, err)
 	}

 	_, err = X509KeyPair([]byte(rsaCertPEM), []byte(rsaCertPEM))
 	if err == nil {
 		t.Fatalf("X509KeyPair didn't return an error when both arguments were certificates")
 	}
 	if subStr := "certificate"; !strings.Contains(err.Error(), subStr) {
 		t.Fatalf("Expected %q in the error when both arguments to X509KeyPair were certificates, but the error was %q", subStr, err)
 	}

 	const nonsensePEM = `
 -----BEGIN NONSENSE-----
 Zm9vZm9vZm9v
 -----END NONSENSE-----
 `

 	_, err = X509KeyPair([]byte(nonsensePEM), []byte(nonsensePEM))
 	if err == nil {
 		t.Fatalf("X509KeyPair didn't return an error when both arguments were nonsense")
 	}
 	if subStr := "NONSENSE"; !strings.Contains(err.Error(), subStr) {
 		t.Fatalf("Expected %q in the error when both arguments to X509KeyPair were nonsense, but the error was %q", subStr, err)
 	}
 }

 func TestX509MixedKeyPair(t *testing.T) {
 	if _, err := X509KeyPair([]byte(rsaCertPEM), []byte(ecdsaKeyPEM)); err == nil {
 		t.Error("Load of RSA certificate succeeded with ECDSA private key")
 	}
 	if _, err := X509KeyPair([]byte(ecdsaCertPEM), []byte(rsaKeyPEM)); err == nil {
 		t.Error("Load of ECDSA certificate succeeded with RSA private key")
 	}
 }

 func newLocalListener(t *testing.T) net.Listener {
 	ln, err := net.Listen("tcp", "127.0.0.1:0")
 	if err != nil {
 		ln, err = net.Listen("tcp6", "[::1]:0")
 	}
 	if err != nil {
 		t.Fatal(err)
 	}
 	return ln
 }

 func TestDialTimeout(t *testing.T) {
 	if testing.Short() {
 		t.Skip("skipping in short mode")
 	}
 	listener := newLocalListener(t)

 	addr := listener.Addr().String()
 	defer listener.Close()

 	complete := make(chan bool)
 	defer close(complete)

 	go func() {
 		conn, err := listener.Accept()
 		if err != nil {
 			t.Error(err)
 			return
 		}
 		<-complete
 		conn.Close()
 	}()

 	dialer := &net.Dialer{
 		Timeout: 10 * time.Millisecond,
 	}

 	var err error
 	if _, err = DialWithDialer(dialer, "tcp", addr, nil); err == nil {
 		t.Fatal("DialWithTimeout completed successfully")
 	}

 	if !strings.Contains(err.Error(), "timed out") {
 		t.Errorf("resulting error not a timeout: %s", err)
 	}
 }

 // tests that Conn.Read returns (non-zero, io.EOF) instead of
 // (non-zero, nil) when a Close (alertCloseNotify) is sitting right
 // behind the application data in the buffer.
 func TestConnReadNonzeroAndEOF(t *testing.T) {
 	// This test is racy: it assumes that after a write to a
 	// localhost TCP connection, the peer TCP connection can
 	// immediately read it.  Because it's racy, we skip this test
 	// in short mode, and then retry it several times with an
 	// increasing sleep in between our final write (via srv.Close
 	// below) and the following read.
 	if testing.Short() {
 		t.Skip("skipping in short mode")
 	}
 	var err error
 	for delay := time.Millisecond; delay <= 64*time.Millisecond; delay *= 2 {
 		if err = testConnReadNonzeroAndEOF(t, delay); err == nil {
 			return
 		}
 	}
 	t.Error(err)
 }

 func testConnReadNonzeroAndEOF(t *testing.T, delay time.Duration) error {
 	ln := newLocalListener(t)
 	defer ln.Close()

 	srvCh := make(chan *Conn, 1)
 	var serr error
 	go func() {
 		sconn, err := ln.Accept()
 		if err != nil {
 			serr = err
 			srvCh <- nil
 			return
 		}
 		serverConfig := *testConfig
 		srv := Server(sconn, &serverConfig)
 		if err := srv.Handshake(); err != nil {
 			serr = fmt.Errorf("handshake: %v", err)
 			srvCh <- nil
 			return
 		}
 		srvCh <- srv
 	}()

 	clientConfig := *testConfig
 	conn, err := Dial("tcp", ln.Addr().String(), &clientConfig)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer conn.Close()

 	srv := <-srvCh
 	if srv == nil {
 		return serr
 	}

 	buf := make([]byte, 6)

 	srv.Write([]byte("foobar"))
 	n, err := conn.Read(buf)
 	if n != 6 || err != nil || string(buf) != "foobar" {
 		return fmt.Errorf("Read = %d, %v, data %q; want 6, nil, foobar", n, err, buf)
 	}

 	srv.Write([]byte("abcdef"))
 	srv.Close()
 	time.Sleep(delay)
 	n, err = conn.Read(buf)
 	if n != 6 || string(buf) != "abcdef" {
 		return fmt.Errorf("Read = %d, buf= %q; want 6, abcdef", n, buf)
 	}
 	if err != io.EOF {
 		return fmt.Errorf("Second Read error = %v; want io.EOF", err)
 	}
 	return nil
 }

 func TestTLSUniqueMatches(t *testing.T) {
 	ln := newLocalListener(t)
 	defer ln.Close()

 	serverTLSUniques := make(chan []byte)
 	go func() {
 		for i := 0; i < 2; i++ {
 			sconn, err := ln.Accept()
 			if err != nil {
 				t.Fatal(err)
 			}
 			serverConfig := *testConfig
 			srv := Server(sconn, &serverConfig)
 			if err := srv.Handshake(); err != nil {
 				t.Fatal(err)
 			}
 			serverTLSUniques <- srv.ConnectionState().TLSUnique
 		}
 	}()

 	clientConfig := *testConfig
 	clientConfig.ClientSessionCache = NewLRUClientSessionCache(1)
 	conn, err := Dial("tcp", ln.Addr().String(), &clientConfig)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !bytes.Equal(conn.ConnectionState().TLSUnique, <-serverTLSUniques) {
 		t.Error("client and server channel bindings differ")
 	}
 	conn.Close()

 	conn, err = Dial("tcp", ln.Addr().String(), &clientConfig)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer conn.Close()
 	if !conn.ConnectionState().DidResume {
 		t.Error("second session did not use resumption")
 	}
 	if !bytes.Equal(conn.ConnectionState().TLSUnique, <-serverTLSUniques) {
 		t.Error("client and server channel bindings differ when session resumption is used")
 	}
 }

 func TestVerifyHostname(t *testing.T) {
 	testenv.MustHaveExternalNetwork(t)

 	c, err := Dial("tcp", "www.google.com:https", nil)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if err := c.VerifyHostname("www.google.com"); err != nil {
 		t.Fatalf("verify www.google.com: %v", err)
 	}
 	if err := c.VerifyHostname("www.yahoo.com"); err == nil {
 		t.Fatalf("verify www.yahoo.com succeeded")
 	}

 	c, err = Dial("tcp", "www.google.com:https", &Config{InsecureSkipVerify: true})
 	if err != nil {
 		t.Fatal(err)
 	}
 	if err := c.VerifyHostname("www.google.com"); err == nil {
 		t.Fatalf("verify www.google.com succeeded with InsecureSkipVerify=true")
 	}
 	if err := c.VerifyHostname("www.yahoo.com"); err == nil {
 		t.Fatalf("verify www.google.com succeeded with InsecureSkipVerify=true")
 	}
 }

 func TestVerifyHostnameResumed(t *testing.T) {
 	testenv.MustHaveExternalNetwork(t)

 	config := &Config{
 		ClientSessionCache: NewLRUClientSessionCache(32),
 	}
 	for i := 0; i < 2; i++ {
 		c, err := Dial("tcp", "www.google.com:https", config)
 		if err != nil {
 			t.Fatalf("Dial #%d: %v", i, err)
 		}
 		cs := c.ConnectionState()
 		if i > 0 && !cs.DidResume {
 			t.Fatalf("Subsequent connection unexpectedly didn't resume")
 		}
 		if cs.VerifiedChains == nil {
 			t.Fatalf("Dial #%d: cs.VerifiedChains == nil", i)
 		}
 		if err := c.VerifyHostname("www.google.com"); err != nil {
 			t.Fatalf("verify www.google.com #%d: %v", i, err)
 		}
 		c.Close()
 	}
 }
	// Copyright 2012 The Go Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style
	// license that can be found in the LICENSE file.

	package tls

	import (
	"bytes"
	"fmt"
	"internal/testenv"
	"io"
	"net"
	"strings"
	"testing"
	"time"
	)

	var rsaCertPEM = `-----BEGIN CERTIFICATE-----
	MIIB0zCCAX2gAwIBAgIJAI/M7BYjwB+uMA0GCSqGSIb3DQEBBQUAMEUxCzAJBgNV
	BAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBX
	aWRnaXRzIFB0eSBMdGQwHhcNMTIwOTEyMjE1MjAyWhcNMTUwOTEyMjE1MjAyWjBF
	MQswCQYDVQQGEwJBVTETMBEGA1UECAwKU29tZS1TdGF0ZTEhMB8GA1UECgwYSW50
	ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBANLJ
	hPHhITqQbPklG3ibCVxwGMRfp/v4XqhfdQHdcVfHap6NQ5Wok/4xIA+ui35/MmNa
	rtNuC+BdZ1tMuVCPFZcCAwEAAaNQME4wHQYDVR0OBBYEFJvKs8RfJaXTH08W+SGv
	zQyKn0H8MB8GA1UdIwQYMBaAFJvKs8RfJaXTH08W+SGvzQyKn0H8MAwGA1UdEwQF
	MAMBAf8wDQYJKoZIhvcNAQEFBQADQQBJlffJHybjDGxRMqaRmDhX0+6v02TUKZsW
	r5QuVbpQhH6u+0UgcW0jp9QwpxoPTLTWGXEWBBBurxFwiCBhkQ+V
	-----END CERTIFICATE-----
	`

	var rsaKeyPEM = `-----BEGIN RSA PRIVATE KEY-----
	MIIBOwIBAAJBANLJhPHhITqQbPklG3ibCVxwGMRfp/v4XqhfdQHdcVfHap6NQ5Wo
	k/4xIA+ui35/MmNartNuC+BdZ1tMuVCPFZcCAwEAAQJAEJ2N+zsR0Xn8/Q6twa4G
	6OB1M1WO+k+ztnX/1SvNeWu8D6GImtupLTYgjZcHufykj09jiHmjHx8u8ZZB/o1N
	MQIhAPW+eyZo7ay3lMz1V01WVjNKK9QSn1MJlb06h/LuYv9FAiEA25WPedKgVyCW
	SmUwbPw8fnTcpqDWE3yTO3vKcebqMSsCIBF3UmVue8YU3jybC3NxuXq3wNm34R8T
	xVLHwDXh/6NJAiEAl2oHGGLz64BuAfjKrqwz7qMYr9HCLIe/YsoWq/olzScCIQDi
	D2lWusoe2/nEqfDVVWGWlyJ7yOmqaVm/iNUN9B2N2g==
	-----END RSA PRIVATE KEY-----
	`

	// keyPEM is the same as rsaKeyPEM, but declares itself as just
	// "PRIVATE KEY", not "RSA PRIVATE KEY". https://golang.org/issue/4477
	var keyPEM = `-----BEGIN PRIVATE KEY-----
	MIIBOwIBAAJBANLJhPHhITqQbPklG3ibCVxwGMRfp/v4XqhfdQHdcVfHap6NQ5Wo
	k/4xIA+ui35/MmNartNuC+BdZ1tMuVCPFZcCAwEAAQJAEJ2N+zsR0Xn8/Q6twa4G
	6OB1M1WO+k+ztnX/1SvNeWu8D6GImtupLTYgjZcHufykj09jiHmjHx8u8ZZB/o1N
	MQIhAPW+eyZo7ay3lMz1V01WVjNKK9QSn1MJlb06h/LuYv9FAiEA25WPedKgVyCW
	SmUwbPw8fnTcpqDWE3yTO3vKcebqMSsCIBF3UmVue8YU3jybC3NxuXq3wNm34R8T
	xVLHwDXh/6NJAiEAl2oHGGLz64BuAfjKrqwz7qMYr9HCLIe/YsoWq/olzScCIQDi
	D2lWusoe2/nEqfDVVWGWlyJ7yOmqaVm/iNUN9B2N2g==
	-----END PRIVATE KEY-----
	`

	var ecdsaCertPEM = `-----BEGIN CERTIFICATE-----
	MIIB/jCCAWICCQDscdUxw16XFDAJBgcqhkjOPQQBMEUxCzAJBgNVBAYTAkFVMRMw
	EQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBXaWRnaXRzIFB0
	eSBMdGQwHhcNMTIxMTE0MTI0MDQ4WhcNMTUxMTE0MTI0MDQ4WjBFMQswCQYDVQQG
	EwJBVTETMBEGA1UECBMKU29tZS1TdGF0ZTEhMB8GA1UEChMYSW50ZXJuZXQgV2lk
	Z2l0cyBQdHkgTHRkMIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBY9+my9OoeSUR
	lDQdV/x8LsOuLilthhiS1Tz4aGDHIPwC1mlvnf7fg5lecYpMCrLLhauAc1UJXcgl
	01xoLuzgtAEAgv2P/jgytzRSpUYvgLBt1UA0leLYBy6mQQbrNEuqT3INapKIcUv8
	XxYP0xMEUksLPq6Ca+CRSqTtrd/23uTnapkwCQYHKoZIzj0EAQOBigAwgYYCQXJo
	A7Sl2nLVf+4Iu/tAX/IF4MavARKC4PPHK3zfuGfPR3oCCcsAoz3kAzOeijvd0iXb
	H5jBImIxPL4WxQNiBTexAkF8D1EtpYuWdlVQ80/h/f4pBcGiXPqX5h2PQSQY7hP1
	+jwM1FGS4fREIOvlBYr/SzzQRtwrvrzGYxDEDbsC0ZGRnA==
	-----END CERTIFICATE-----
	`

	var ecdsaKeyPEM = `-----BEGIN EC PARAMETERS-----
	BgUrgQQAIw==
	-----END EC PARAMETERS-----
	-----BEGIN EC PRIVATE KEY-----
	MIHcAgEBBEIBrsoKp0oqcv6/JovJJDoDVSGWdirrkgCWxrprGlzB9o0X8fV675X0
	NwuBenXFfeZvVcwluO7/Q9wkYoPd/t3jGImgBwYFK4EEACOhgYkDgYYABAFj36bL
	06h5JRGUNB1X/Hwuw64uKW2GGJLVPPhoYMcg/ALWaW+d/t+DmV5xikwKssuFq4Bz
	VQldyCXTXGgu7OC0AQCC/Y/+ODK3NFKlRi+AsG3VQDSV4tgHLqZBBus0S6pPcg1q
	kohxS/xfFg/TEwRSSws+roJr4JFKpO2t3/be5OdqmQ==
	-----END EC PRIVATE KEY-----
	`

	var keyPairTests = []struct {
	algo string
	cert string
	key string
	}{
	{"ECDSA", ecdsaCertPEM, ecdsaKeyPEM},
	{"RSA", rsaCertPEM, rsaKeyPEM},
	{"RSA-untyped", rsaCertPEM, keyPEM}, // golang.org/issue/4477
	}

	func TestX509KeyPair(t *testing.T) {
	var pem []byte
	for _, test := range keyPairTests {
	pem = []byte(test.cert + test.key)
	if _, err := X509KeyPair(pem, pem); err != nil {
	t.Errorf("Failed to load %s cert followed by %s key: %s", test.algo, test.algo, err)
	}
	pem = []byte(test.key + test.cert)
	if _, err := X509KeyPair(pem, pem); err != nil {
	t.Errorf("Failed to load %s key followed by %s cert: %s", test.algo, test.algo, err)
	}
	}
	}

	func TestX509KeyPairErrors(t *testing.T) {
	_, err := X509KeyPair([]byte(rsaKeyPEM), []byte(rsaCertPEM))
	if err == nil {
	t.Fatalf("X509KeyPair didn't return an error when arguments were switched")
	}
	if subStr := "been switched"; !strings.Contains(err.Error(), subStr) {
	t.Fatalf("Expected %q in the error when switching arguments to X509KeyPair, but the error was %q", subStr, err)
	}

	_, err = X509KeyPair([]byte(rsaCertPEM), []byte(rsaCertPEM))
	if err == nil {
	t.Fatalf("X509KeyPair didn't return an error when both arguments were certificates")
	}
	if subStr := "certificate"; !strings.Contains(err.Error(), subStr) {
	t.Fatalf("Expected %q in the error when both arguments to X509KeyPair were certificates, but the error was %q", subStr, err)
	}

	const nonsensePEM = `
	-----BEGIN NONSENSE-----
	Zm9vZm9vZm9v
	-----END NONSENSE-----
	`

	_, err = X509KeyPair([]byte(nonsensePEM), []byte(nonsensePEM))
	if err == nil {
	t.Fatalf("X509KeyPair didn't return an error when both arguments were nonsense")
	}
	if subStr := "NONSENSE"; !strings.Contains(err.Error(), subStr) {
	t.Fatalf("Expected %q in the error when both arguments to X509KeyPair were nonsense, but the error was %q", subStr, err)
	}
	}

	func TestX509MixedKeyPair(t *testing.T) {
	if _, err := X509KeyPair([]byte(rsaCertPEM), []byte(ecdsaKeyPEM)); err == nil {
	t.Error("Load of RSA certificate succeeded with ECDSA private key")
	}
	if _, err := X509KeyPair([]byte(ecdsaCertPEM), []byte(rsaKeyPEM)); err == nil {
	t.Error("Load of ECDSA certificate succeeded with RSA private key")
	}
	}

	func newLocalListener(t *testing.T) net.Listener {
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
	ln, err = net.Listen("tcp6", "[::1]:0")
	}
	if err != nil {
	t.Fatal(err)
	}
	return ln
	}

	func TestDialTimeout(t *testing.T) {
	if testing.Short() {
	t.Skip("skipping in short mode")
	}
	listener := newLocalListener(t)

	addr := listener.Addr().String()
	defer listener.Close()

	complete := make(chan bool)
	defer close(complete)

	go func() {
	conn, err := listener.Accept()
	if err != nil {
	t.Error(err)
	return
	}
	<-complete
	conn.Close()
	}()

	dialer := &net.Dialer{
	Timeout: 10 * time.Millisecond,
	}

	var err error
	if _, err = DialWithDialer(dialer, "tcp", addr, nil); err == nil {
	t.Fatal("DialWithTimeout completed successfully")
	}

	if !strings.Contains(err.Error(), "timed out") {
	t.Errorf("resulting error not a timeout: %s", err)
	}
	}

	// tests that Conn.Read returns (non-zero, io.EOF) instead of
	// (non-zero, nil) when a Close (alertCloseNotify) is sitting right
	// behind the application data in the buffer.
	func TestConnReadNonzeroAndEOF(t *testing.T) {
	// This test is racy: it assumes that after a write to a
	// localhost TCP connection, the peer TCP connection can
	// immediately read it. Because it's racy, we skip this test
	// in short mode, and then retry it several times with an
	// increasing sleep in between our final write (via srv.Close
	// below) and the following read.
	if testing.Short() {
	t.Skip("skipping in short mode")
	}
	var err error
	for delay := time.Millisecond; delay <= 64time.Millisecond; delay = 2 {
	if err = testConnReadNonzeroAndEOF(t, delay); err == nil {
	return
	}
	}
	t.Error(err)
	}

	func testConnReadNonzeroAndEOF(t *testing.T, delay time.Duration) error {
	ln := newLocalListener(t)
	defer ln.Close()

	srvCh := make(chan *Conn, 1)
	var serr error
	go func() {
	sconn, err := ln.Accept()
	if err != nil {
	serr = err
	srvCh <- nil
	return
	}
	serverConfig := *testConfig
	srv := Server(sconn, &serverConfig)
	if err := srv.Handshake(); err != nil {
	serr = fmt.Errorf("handshake: %v", err)
	srvCh <- nil
	return
	}
	srvCh <- srv
	}()

	clientConfig := *testConfig
	conn, err := Dial("tcp", ln.Addr().String(), &clientConfig)
	if err != nil {
	t.Fatal(err)
	}
	defer conn.Close()

	srv := <-srvCh
	if srv == nil {
	return serr
	}

	buf := make([]byte, 6)

	srv.Write([]byte("foobar"))
	n, err := conn.Read(buf)
	if n != 6 \|\| err != nil \|\| string(buf) != "foobar" {
	return fmt.Errorf("Read = %d, %v, data %q; want 6, nil, foobar", n, err, buf)
	}

	srv.Write([]byte("abcdef"))
	srv.Close()
	time.Sleep(delay)
	n, err = conn.Read(buf)
	if n != 6 \|\| string(buf) != "abcdef" {
	return fmt.Errorf("Read = %d, buf= %q; want 6, abcdef", n, buf)
	}
	if err != io.EOF {
	return fmt.Errorf("Second Read error = %v; want io.EOF", err)
	}
	return nil
	}

	func TestTLSUniqueMatches(t *testing.T) {
	ln := newLocalListener(t)
	defer ln.Close()

	serverTLSUniques := make(chan []byte)
	go func() {
	for i := 0; i < 2; i++ {
	sconn, err := ln.Accept()
	if err != nil {
	t.Fatal(err)
	}
	serverConfig := *testConfig
	srv := Server(sconn, &serverConfig)
	if err := srv.Handshake(); err != nil {
	t.Fatal(err)
	}
	serverTLSUniques <- srv.ConnectionState().TLSUnique
	}
	}()

	clientConfig := *testConfig
	clientConfig.ClientSessionCache = NewLRUClientSessionCache(1)
	conn, err := Dial("tcp", ln.Addr().String(), &clientConfig)
	if err != nil {
	t.Fatal(err)
	}
	if !bytes.Equal(conn.ConnectionState().TLSUnique, <-serverTLSUniques) {
	t.Error("client and server channel bindings differ")
	}
	conn.Close()

	conn, err = Dial("tcp", ln.Addr().String(), &clientConfig)
	if err != nil {
	t.Fatal(err)
	}
	defer conn.Close()
	if !conn.ConnectionState().DidResume {
	t.Error("second session did not use resumption")
	}
	if !bytes.Equal(conn.ConnectionState().TLSUnique, <-serverTLSUniques) {
	t.Error("client and server channel bindings differ when session resumption is used")
	}
	}

	func TestVerifyHostname(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

	c, err := Dial("tcp", "www.google.com:https", nil)
	if err != nil {
	t.Fatal(err)
	}
	if err := c.VerifyHostname("www.google.com"); err != nil {
	t.Fatalf("verify www.google.com: %v", err)
	}
	if err := c.VerifyHostname("www.yahoo.com"); err == nil {
	t.Fatalf("verify www.yahoo.com succeeded")
	}

	c, err = Dial("tcp", "www.google.com:https", &Config{InsecureSkipVerify: true})
	if err != nil {
	t.Fatal(err)
	}
	if err := c.VerifyHostname("www.google.com"); err == nil {
	t.Fatalf("verify www.google.com succeeded with InsecureSkipVerify=true")
	}
	if err := c.VerifyHostname("www.yahoo.com"); err == nil {
	t.Fatalf("verify www.google.com succeeded with InsecureSkipVerify=true")
	}
	}

	func TestVerifyHostnameResumed(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

	config := &Config{
	ClientSessionCache: NewLRUClientSessionCache(32),
	}
	for i := 0; i < 2; i++ {
	c, err := Dial("tcp", "www.google.com:https", config)
	if err != nil {
	t.Fatalf("Dial #%d: %v", i, err)
	}
	cs := c.ConnectionState()
	if i > 0 && !cs.DidResume {
	t.Fatalf("Subsequent connection unexpectedly didn't resume")
	}
	if cs.VerifiedChains == nil {
	t.Fatalf("Dial #%d: cs.VerifiedChains == nil", i)
	}
	if err := c.VerifyHostname("www.google.com"); err != nil {
	t.Fatalf("verify www.google.com #%d: %v", i, err)
	}
	c.Close()
	}
	}