使用 reactor netty 为 spring-webflux WebClient 配置 HostnameVerifier

Question

我正在尝试使用 ssl 和客户端主机名验证配置 spring-webflux WebClient（在引擎盖下使用反应器 netty）。为我提供了 javax.net.ssl.SSLContext、HostnameVerifier 和可信主机名列表（作为字符串列表）。

到目前为止，我已经使用 SSLContext 配置了 WebClient，但我找不到配置主机名验证的方法。

陈述我的问题：我有一组受信任的服务主机名（字符串列表）和一个 HostnameVerifier。我想用它来配置我的 WebClient。

有没有可能用 javax.net.ssl.HostnameVerifier 做到这一点？在 reactor netty 中是否有替代方法？

这是我目前得到的：

WebClient.builder()
  .clientConnector(
    new ReactorClientHttpConnector(
      opt -> opt.sslContext(new JdkSslContext(mySSLContext, 
                      true, ClientAuth.OPTIONAL))))
  .build();

Answer 1

您应该提供有效的证书颁发机构证书 (trustManager()) 和可选的用户证书以及用于授权的私钥和私钥密码 (keyManager())。 您的服务 SSL 证书应由您在 trustManager() 中定义的同一 CA 签名。

正在使用服务主机名自动验证主机名。如果不匹配 java.security.cert.CertificateException: No subject alternative names present 将抛出异常。实际上我找不到省略主机名验证的方法（不使用 .trustManager(InsecureTrustManagerFactory.INSTANCE) 省略整个 SSL 证书验证）。

我已经在本地测试了这个解决方案。我的网络服务在我的本地机器上运行，但它的 SSL 证书只包含 DNS 名称，而不是 IP 地址。 因此，出于调试目的，我在 hosts 文件中添加了条目，并将我的服务 IP 映射到正确的 DNS 名称。

SslContext sslContext = SslContextBuilder
        .forClient()
        .trustManager(new FileInputStream(caPath))
        .keyManager(
                new FileInputStream(userCertPath),
                new FileInputStream(userPrivateKeyPath),
                userPrivateKeyPassword
        )
        .build();

HttpClient httpClient = HttpClient.create()
        .secure(t -> t.sslContext(sslContext));

WebClient webClient = WebClient.builder()
        .clientConnector(new ReactorClientHttpConnector(httpClient))
        .build();

Answer 2

我已尝试使用 Netty HttpClient 进行以下解决方案，并且效果很好（通过使用自定义主机名匹配器禁用主机名验证）

public HttpClient getHttpClient(HttpClientProperties properties){

            // configure pool resources
            HttpClientProperties.Pool pool = properties.getPool();

            ConnectionProvider connectionProvider;
            if (pool.getType() == DISABLED) {
                connectionProvider = ConnectionProvider.newConnection();
            }
            else if (pool.getType() == FIXED) {
                connectionProvider = ConnectionProvider.fixed(pool.getName(),
                        pool.getMaxConnections(), pool.getAcquireTimeout());
            }
            else {
                connectionProvider = ConnectionProvider.elastic(pool.getName());
            }

            HttpClient httpClient = HttpClient.create(connectionProvider)
                    .tcpConfiguration(tcpClient -> {

                        if (properties.getConnectTimeout() != null) {
                            tcpClient = tcpClient.option(
                                    ChannelOption.CONNECT_TIMEOUT_MILLIS,
                                    properties.getConnectTimeout());
                        }

                        // configure proxy if proxy host is set.
                        HttpClientProperties.Proxy proxy = properties.getProxy();

                        if (StringUtils.hasText(proxy.getHost())) {

                            tcpClient = tcpClient.proxy(proxySpec -> {
                                ProxyProvider.Builder builder = proxySpec
                                        .type(ProxyProvider.Proxy.HTTP)
                                        .host(proxy.getHost());

                                PropertyMapper map = PropertyMapper.get();

                                map.from(proxy::getPort).whenNonNull().to(builder::port);
                                map.from(proxy::getUsername).whenHasText()
                                        .to(builder::username);
                                map.from(proxy::getPassword).whenHasText()
                                        .to(password -> builder.password(s -> password));
                                map.from(proxy::getNonProxyHostsPattern).whenHasText()
                                        .to(builder::nonProxyHosts);
                            });
                        }
                        return tcpClient;
                    });

            HttpClientProperties.Ssl ssl = properties.getSsl();
            if (ssl.getTrustedX509CertificatesForTrustManager().length > 0
                    || ssl.isUseInsecureTrustManager()) {
                httpClient = httpClient.secure(sslContextSpec -> {
                    // configure ssl
                    SslContextBuilder sslContextBuilder = SslContextBuilder.forClient();

                    X509Certificate[] trustedX509Certificates = ssl
                            .getTrustedX509CertificatesForTrustManager();
                    if (trustedX509Certificates.length > 0) {
                        sslContextBuilder.trustManager(trustedX509Certificates);
                    }
                    else if (ssl.isUseInsecureTrustManager()) {
                        sslContextBuilder
                                .trustManager(InsecureTrustManagerFactory.INSTANCE);
                    }


                    sslContextSpec.sslContext(sslContextBuilder)
                            .defaultConfiguration(ssl.getDefaultConfigurationType())
                            .handshakeTimeout(ssl.getHandshakeTimeout())
                            .closeNotifyFlushTimeout(ssl.getCloseNotifyFlushTimeout())
                            .closeNotifyReadTimeout(ssl.getCloseNotifyReadTimeout())
                            .handlerConfigurator(
                                    (handler)->{
                                        SSLEngine engine = handler.engine();
                                        //engine.setNeedClientAuth(true);
                                        SSLParameters params = new SSLParameters();
                                        List<SNIMatcher> matchers = new LinkedList<>();
                                        SNIMatcher matcher = new SNIMatcher(0) {

                                            @Override
                                            public boolean matches(SNIServerName serverName) {
                                                return true;
                                            }
                                        };
                                        matchers.add(matcher);
                                        params.setSNIMatchers(matchers);
                                        engine.setSSLParameters(params);
                                    }
                            )
                    ;
                });
            }

            return httpClient;

        }

它使用 nettys handlerConfigurator 来配置 SSLEngine 并将其与自定义匹配器一起使用