Golang tls.NewLRUClientSessionCache函數代碼示例

func NewFilter(config *Config) (filters.Filter, error) {
	ss := &Servers{
		servers:    make([]Server, 0),
		sshClients: lrucache.NewLRUCache(uint(len(config.Servers))),
	}

	for _, s := range config.Servers {
		server := Server{
			Address: s.Addr,
			ClientConfig: &ssh.ClientConfig{
				User: s.Username,
				Auth: []ssh.AuthMethod{
					ssh.Password(s.Password),
				},
			},
		}

		ss.servers = append(ss.servers, server)
	}

	tr := &http.Transport{
		Dial: ss.Dial,
		TLSClientConfig: &tls.Config{
			InsecureSkipVerify: false,
			ClientSessionCache: tls.NewLRUClientSessionCache(1000),
		},
		TLSHandshakeTimeout: time.Duration(config.Transport.TLSHandshakeTimeout) * time.Second,
		MaxIdleConnsPerHost: config.Transport.MaxIdleConnsPerHost,
	}

	return &Filter{
		Config:    *config,
		Transport: tr,
	}, nil
}

func NewETCDMetrics(logger lager.Logger, etcdOptions *ETCDOptions) (*ETCDMetrics, error) {
	var tlsConfig *tls.Config
	if etcdOptions.CertFile != "" && etcdOptions.KeyFile != "" {
		var err error
		tlsConfig, err = cfhttp.NewTLSConfig(etcdOptions.CertFile, etcdOptions.KeyFile, etcdOptions.CAFile)
		if err != nil {
			return nil, err
		}
		tlsConfig.ClientSessionCache = tls.NewLRUClientSessionCache(etcdOptions.ClientSessionCacheSize)
	}

	client := cfhttp.NewClient()
	client.CheckRedirect = func(*http.Request, []*http.Request) error {
		return errRedirected
	}

	if tr, ok := client.Transport.(*http.Transport); ok {
		tr.TLSClientConfig = tlsConfig
	} else {
		return nil, errors.New("Invalid transport")
	}

	return &ETCDMetrics{
		logger: logger,

		etcdCluster: etcdOptions.ClusterUrls,

		client: client,
	}, nil
}

func newSecureClient(url, caFile, certFile, keyFile string, clientSessionCacheSize, maxIdleConnsPerHost int, skipVerify bool) (InternalClient, error) {
	client := newClient(url)

	tlsConfig, err := cfhttp.NewTLSConfig(certFile, keyFile, caFile)
	if err != nil {
		return nil, err
	}
	tlsConfig.ClientSessionCache = tls.NewLRUClientSessionCache(clientSessionCacheSize)

	tlsConfig.InsecureSkipVerify = skipVerify

	if tr, ok := client.httpClient.Transport.(*http.Transport); ok {
		tr.TLSClientConfig = tlsConfig
		tr.MaxIdleConnsPerHost = maxIdleConnsPerHost
	} else {
		return nil, errors.New("Invalid transport")
	}

	if tr, ok := client.streamingHTTPClient.Transport.(*http.Transport); ok {
		tr.TLSClientConfig = tlsConfig
		tr.MaxIdleConnsPerHost = maxIdleConnsPerHost
	} else {
		return nil, errors.New("Invalid transport")
	}

	return client, nil
}

// tlsConfig builds a tls.Config for dialing the upstream host. Constructed
// tls.Configs are cached on a per-masquerade basis to enable client session
// caching and reduce the amount of PEM certificate parsing.
func (serverInfo *ServerInfo) tlsConfig(masquerade *Masquerade) *tls.Config {
	serverInfo.tlsConfigsMutex.Lock()
	defer serverInfo.tlsConfigsMutex.Unlock()

	if serverInfo.tlsConfigs == nil {
		serverInfo.tlsConfigs = make(map[string]*tls.Config)
	}

	configKey := ""
	serverName := serverInfo.Host
	if masquerade != nil {
		configKey = masquerade.Domain + "|" + masquerade.RootCA
		serverName = masquerade.Domain
	}
	tlsConfig := serverInfo.tlsConfigs[configKey]
	if tlsConfig == nil {
		tlsConfig = &tls.Config{
			ClientSessionCache: tls.NewLRUClientSessionCache(1000),
			InsecureSkipVerify: serverInfo.InsecureSkipVerify,
			ServerName:         serverName,
		}
		if masquerade != nil && masquerade.RootCA != "" {
			caCert, err := keyman.LoadCertificateFromPEMBytes([]byte(masquerade.RootCA))
			if err != nil {
				log.Fatalf("Unable to load root ca cert: %s", err)
			}
			tlsConfig.RootCAs = caCert.PoolContainingCert()
		}
		serverInfo.tlsConfigs[configKey] = tlsConfig
	}

	return tlsConfig
}

// SessionResumeScan tests that host is able to resume sessions across all addresses.
func sessionResumeScan(addr, hostname string) (grade Grade, output Output, err error) {
	config := defaultTLSConfig(hostname)
	config.ClientSessionCache = tls.NewLRUClientSessionCache(1)

	conn, err := tls.DialWithDialer(Dialer, Network, addr, config)
	if err != nil {
		return
	}
	if err = conn.Close(); err != nil {
		return
	}

	return multiscan(addr, func(addrport string) (g Grade, o Output, e error) {
		var conn *tls.Conn
		if conn, e = tls.DialWithDialer(Dialer, Network, addrport, config); e != nil {
			return
		}
		conn.Close()

		if o = conn.ConnectionState().DidResume; o.(bool) {
			g = Good
		}
		return
	})
}

// Dialer creates a *balancer.Dialer backed by a chained server.
func (s *ChainedServerInfo) Dialer() (*balancer.Dialer, error) {
	netd := &net.Dialer{Timeout: chainedDialTimeout}

	var dial func() (net.Conn, error)
	if s.Cert == "" {
		log.Error("No Cert configured for chained server, will dial with plain tcp")
		dial = func() (net.Conn, error) {
			return netd.Dial("tcp", s.Addr)
		}
	} else {
		log.Trace("Cert configured for chained server, will dial with tls over tcp")
		cert, err := keyman.LoadCertificateFromPEMBytes([]byte(s.Cert))
		if err != nil {
			return nil, fmt.Errorf("Unable to parse certificate: %s", err)
		}
		x509cert := cert.X509()
		sessionCache := tls.NewLRUClientSessionCache(1000)
		dial = func() (net.Conn, error) {
			conn, err := tlsdialer.DialWithDialer(netd, "tcp", s.Addr, false, &tls.Config{
				ClientSessionCache: sessionCache,
				InsecureSkipVerify: true,
			})
			if err != nil {
				return nil, err
			}
			if !conn.ConnectionState().PeerCertificates[0].Equal(x509cert) {
				conn.Close()
				return nil, fmt.Errorf("Server's certificate didn't match expected!")
			}
			return conn, err
		}
	}

	ccfg := chained.Config{
		DialServer: dial,
	}
	if s.AuthToken != "" {
		ccfg.OnRequest = func(req *http.Request) {
			req.Header.Set("X-LANTERN-AUTH-TOKEN", s.AuthToken)
		}
	}
	d := chained.NewDialer(ccfg)

	// Is this a trusted proxy that we could use for HTTP traffic?
	var trusted string
	if s.Trusted {
		trusted = "(trusted) "
	}

	return &balancer.Dialer{
		Label:   fmt.Sprintf("%schained proxy at %s", trusted, s.Addr),
		Weight:  s.Weight,
		QOS:     s.QOS,
		Trusted: s.Trusted,
		Dial: func(network, addr string) (net.Conn, error) {
			return withStats(d.Dial(network, addr))
		},
	}, nil
}

func (l *TLSLog) initConfig(config *tls.Config) {
	l.log = ""
	l.logRand = newLogRand(config.Rand)
	config.Rand = l.logRand
	config.SessionTicketsDisabled = false
	if config.ClientSessionCache == nil {
		config.ClientSessionCache = tls.NewLRUClientSessionCache(1)
	}
}

func runHTTPServer() {
	cryptoConfig := &CryptoConfig{
		PKFile:   "proxypk.pem",
		CertFile: "proxycert.pem",
		ServerTLSConfig: &tls.Config{
			CipherSuites: []uint16{
				tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
				tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
				tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA,
				tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
				tls.TLS_RSA_WITH_RC4_128_SHA,
				tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA,
				tls.TLS_RSA_WITH_AES_128_CBC_SHA,
				tls.TLS_RSA_WITH_AES_256_CBC_SHA,
				tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
				tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
			},
			PreferServerCipherSuites: true,
		},
	}

	rp := &httputil.ReverseProxy{
		Director: func(req *http.Request) {
			log.Printf("Processing request to: %s", req.URL)
		},
		Transport: &http.Transport{
			TLSClientConfig: &tls.Config{
				// Use a TLS session cache to minimize TLS connection establishment
				// Requires Go 1.3+
				ClientSessionCache: tls.NewLRUClientSessionCache(SESSIONS_TO_CACHE),
			},
		},
	}

	handler, err := Wrap(rp, cryptoConfig)
	if err != nil {
		log.Fatalf("Unable to wrap reverse proxy: %s", err)
	}

	server := &http.Server{
		Addr:         HTTP_ADDR,
		Handler:      handler,
		ReadTimeout:  10 * time.Hour,
		WriteTimeout: 10 * time.Hour,
	}

	go func() {
		log.Printf("About to start HTTP proxy at %s", HTTP_ADDR)
		if err := server.ListenAndServe(); err != nil {
			log.Fatalf("Unable to start HTTP proxy: %s", err)
		}
		exampleWg.Done()
	}()

	return
}

func New() {

	flag.Parse()
	LoadConfig(*configPath)

	server := &Server{
		Docs:        make(map[string]*Doc, 0),
		sortedDocs:  make([]*Doc, 0),
		DocLock:     &sync.RWMutex{},
		Tags:        make(map[string][]*Doc, 0),
		TagLock:     &sync.RWMutex{},
		StaticFiles: make([]string, 0),
		Version:     Version,
		StopWatch:   make(chan bool)}

	server.Reset()
	if err := server.LoadTempalte(); err != nil {
		log.Fatal(err)
	}
	server.LoadStaticFiles()
	server.LoadAllDocs()
	if err := server.SaveAllDocs(); err != nil {
		log.Fatal(err)
	}
	server.MakeHome()
	log.Print(server.MakeSitemap())
	log.Print(Cfg)
	server.Watch()
	server.ConfigWatch()

	admin := map[string]http.HandlerFunc{
		".add":    server.Add,
		".edit":   server.Edit,
		".quit":   server.Quit,
		".upload": server.UploadMedia,
	}

	for k, v := range admin {
		http.HandleFunc(path.Join(Cfg.BasePath, k), server.auth(v))
	}

	http.Handle("/", http.FileServer(http.Dir(Cfg.PublicPath)))

	if Cfg.TLSKeyFile != "" && Cfg.TLSCertFile != "" {

		tls_server := http.Server{Addr: Cfg.Addr, Handler: nil,
			TLSConfig: &tls.Config{ClientSessionCache: tls.NewLRUClientSessionCache(100)}}
		log.Fatal(tls_server.ListenAndServeTLS(Cfg.TLSCertFile, Cfg.TLSKeyFile))
	} else {
		log.Fatal(http.ListenAndServe(Cfg.Addr, nil))
	}
}

func New(domain string, email string, apiToken string) *Util {
	client := dnsimple.NewClient(apiToken, email)
	// Set a longish timeout on the HTTP client just in case
	client.HttpClient = &http.Client{
		Timeout: 5 * time.Minute,
		Transport: &http.Transport{
			TLSClientConfig: &tls.Config{
				ClientSessionCache: tls.NewLRUClientSessionCache(1000),
			},
		},
	}
	return &Util{client, domain}
}

func NewTLSServer(logger *util.Logger, caPool *CAPool, kvStore *kvstore.KVStore, hostname string) *TLSServer {
	inst := &TLSServer{
		ServerNode:     ch.NewServerNode(hostname),
		Logger:         logger,
		ControlChannel: make(chan (int)),
		StatusChannel:  make(chan (int)),
		Connections:    map[[16]byte]*Peer{},
		SessionCache:   tls.NewLRUClientSessionCache(1024),
		KVStore:        kvStore,
		CAPool:         caPool,
	}
	return inst
}

func New(domain string, username string, apiKey string) *Util {
	client := cloudflare.NewClient(username, apiKey)
	// Set a longish timeout on the HTTP client just in case
	client.Http = &http.Client{
		Timeout: 5 * time.Minute,
		Transport: &http.Transport{
			TLSClientConfig: &tls.Config{
				ClientSessionCache: tls.NewLRUClientSessionCache(1000),
			},
		},
	}
	return &Util{client, domain}
}

func New(id string, key string, httpClient *http.Client) *cloudfront.CloudFront {
	creds := aws.Creds(id, key, "")
	// Set a longish timeout on the HTTP client just in case
	if httpClient == nil {
		httpClient = &http.Client{
			Timeout: 5 * time.Minute,
			Transport: &http.Transport{
				TLSClientConfig: &tls.Config{
					ClientSessionCache: tls.NewLRUClientSessionCache(1000),
				},
			},
		}
	}
	return cloudfront.New(creds, "", httpClient)
}

func post(params map[string]interface{}) error {
	buffer := bytes.NewBufferString("")

	if err := tmpl.Execute(buffer, params); err != nil {
		log.Printf("Airbrake error: %s", err)
		return err
	}

	if Verbose {
		log.Printf("Airbrake payload for endpoint %s: %s", Endpoint, buffer)
	}

	var httpClient = &http.Client{
		Transport: &http.Transport{
			Proxy: http.ProxyFromEnvironment,
			Dial: (&net.Dialer{
				Timeout:   30 * time.Second,
				KeepAlive: 30 * time.Second,
			}).Dial,
			TLSHandshakeTimeout: 10 * time.Second,
			TLSClientConfig: &tls.Config{
				ClientSessionCache: tls.NewLRUClientSessionCache(1024),
			},
			MaxIdleConnsPerHost:   100,
			ResponseHeaderTimeout: 10 * time.Second,
		},
		Timeout: 10 * time.Second,
	}
	response, err := httpClient.Post(Endpoint, "text/xml", buffer)
	if err != nil {
		log.Printf("Airbrake error: %s", err)
		return err
	}

	if Verbose {
		body, _ := ioutil.ReadAll(response.Body)
		log.Printf("response: %s", body)
	}
	response.Body.Close()

	if Verbose {
		log.Printf("Airbrake post: %s status code: %d", params["Error"], response.StatusCode)
	}

	return nil
}

// tlsConfig builds a tls.Config for dialing the upstream host. Constructed
// tls.Configs are cached on a per-masquerade basis to enable client session
// caching and reduce the amount of PEM certificate parsing.
func (d *direct) tlsConfig(m *Masquerade) *tls.Config {
	d.tlsConfigsMutex.Lock()
	defer d.tlsConfigsMutex.Unlock()

	tlsConfig := d.tlsConfigs[m.Domain]
	if tlsConfig == nil {
		tlsConfig = &tls.Config{
			ClientSessionCache: tls.NewLRUClientSessionCache(1000),
			InsecureSkipVerify: false,
			ServerName:         m.Domain,
			RootCAs:            d.certPool,
		}
		d.tlsConfigs[m.Domain] = tlsConfig
	}

	return tlsConfig
}