java - 使用 jdk8 Conscrypt 为 http2 启用 ALPN

Question

我一直在寻找如何使用 conscrypt-openjdk-uber-1.4.1.jar 为 jdk8 实现 Conscrypt SSL 提供程序以支持 ALPN 用于建立到服务器的http2(使用 apache httpclient 5) 连接，因为 jdk8 默认不支持 ALPN 或者其他解决方案是迁移到 jdk9(或更高版本)这目前不可行，因为我们的产品严重依赖 jdk8

我一直在广泛搜索一些要实现的文档或示例，但找不到。

我已经尝试插入 concrypt 提供程序作为默认提供程序，我的程序将其作为默认提供程序，但它仍然无法连接到 http2 服务器，我的示例如下，

public static void main(final String[] args) throws Exception {
    Security.insertProviderAt(new OpenSSLProvider(), 1);
    final SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(new TrustAllStrategy()).build();
    final PoolingAsyncClientConnectionManager connectionManager = PoolingAsyncClientConnectionManagerBuilder.create().setTlsStrategy(new H2TlsStrategy(sslContext, NoopHostnameVerifier.INSTANCE)).build();
    final IOReactorConfig ioReactorConfig = IOReactorConfig.custom().setSoTimeout(Timeout.ofSeconds(5)).build();
    final MinimalHttpAsyncClient client = HttpAsyncClients.createMinimal(HttpVersionPolicy.FORCE_HTTP_2, H2Config.DEFAULT, null, ioReactorConfig, connectionManager);

    client.start();
    final HttpHost target = new HttpHost("localhost", 8082, "https");
    final Future<AsyncClientEndpoint> leaseFuture = client.lease(target, null);
    final AsyncClientEndpoint endpoint = leaseFuture.get(10, TimeUnit.SECONDS);
    try {
        String[] requestUris = new String[] {"/"};
        CountDownLatch latch = new CountDownLatch(requestUris.length);
        for (final String requestUri: requestUris) {
            SimpleHttpRequest request = SimpleHttpRequest.get(target, requestUri);
            endpoint.execute(SimpleRequestProducer.create(request), SimpleResponseConsumer.create(), new FutureCallback<SimpleHttpResponse>() {
                        @Override
                        public void completed(final SimpleHttpResponse response) {
                            latch.countDown();
                            System.out.println(requestUri + "->" + response.getCode());
                            System.out.println(response.getBody());
                        }

                        @Override
                        public void failed(final Exception ex) {
                            latch.countDown();
                            System.out.println(requestUri + "->" + ex);
                            ex.printStackTrace();
                        }

                        @Override
                        public void cancelled() {
                            latch.countDown();
                            System.out.println(requestUri + " cancelled");
                        }

                    });
        }
        latch.await();
    } catch (Exception e) {
        e.printStackTrace();
    }finally {
        endpoint.releaseAndReuse();
    }

    client.shutdown(ShutdownType.GRACEFUL);
}

这个程序的输出为

org.apache.hc.core5.http.ConnectionClosedException: Connection closed org.apache.hc.core5.http.ConnectionClosedException: Connection closed at org.apache.hc.core5.http2.impl.nio.FrameInputBuffer.read(FrameInputBuffer.java:146) at org.apache.hc.core5.http2.impl.nio.AbstractHttp2StreamMultiplexer.onInput(AbstractHttp2StreamMultiplexer.java:415) at org.apache.hc.core5.http2.impl.nio.AbstractHttp2IOEventHandler.inputReady(AbstractHttp2IOEventHandler.java:63) at org.apache.hc.core5.http2.impl.nio.ClientHttp2IOEventHandler.inputReady(ClientHttp2IOEventHandler.java:38) at org.apache.hc.core5.reactor.InternalDataChannel.onIOEvent(InternalDataChannel.java:117) at org.apache.hc.core5.reactor.InternalChannel.handleIOEvent(InternalChannel.java:50) at org.apache.hc.core5.reactor.SingleCoreIOReactor.processEvents(SingleCoreIOReactor.java:173) at org.apache.hc.core5.reactor.SingleCoreIOReactor.doExecute(SingleCoreIOReactor.java:123) at org.apache.hc.core5.reactor.AbstractSingleCoreIOReactor.execute(AbstractSingleCoreIOReactor.java:80) at org.apache.hc.core5.reactor.IOReactorWorker.run(IOReactorWorker.java:44) at java.lang.Thread.run(Thread.java:748)

如果我打印提供程序和版本，它会打印为 Conscrypt version 1.0 和 JDK 1.8.0_162，但它仍然无法连接到 http2 端点

如果我使用 jdk9 与默认提供程序连接，相同的代码块可以完美运行，我在 concrypt 配置中缺少什么？

感谢任何帮助

提前致谢

Answer 1

仅用 Conscrypt 替换默认的 JSSE 提供程序是不够的。还需要一个可以利用 Conscrypt API 的自定义 TlsStrategy。

这对我适用于 Java 1.8 和 Conscrypt 1.4.1

static class ConscriptClientTlsStrategy implements TlsStrategy {

    private final SSLContext sslContext;

    public ConscriptClientTlsStrategy(final SSLContext sslContext) {
        this.sslContext = Args.notNull(sslContext, "SSL context");
    }

    @Override
    public boolean upgrade(
            final TransportSecurityLayer tlsSession,
            final HttpHost host,
            final SocketAddress localAddress,
            final SocketAddress remoteAddress,
            final Object attachment) {
        final String scheme = host != null ? host.getSchemeName() : null;
        if (URIScheme.HTTPS.same(scheme)) {
            tlsSession.startTls(
                    sslContext,
                    host,
                    SSLBufferMode.STATIC,
                    (endpoint, sslEngine) -> {
                        final SSLParameters sslParameters = sslEngine.getSSLParameters();
                        sslParameters.setProtocols(H2TlsSupport.excludeBlacklistedProtocols(sslParameters.getProtocols()));
                        sslParameters.setCipherSuites(H2TlsSupport.excludeBlacklistedCiphers(sslParameters.getCipherSuites()));
                        H2TlsSupport.setEnableRetransmissions(sslParameters, false);
                        final HttpVersionPolicy versionPolicy = attachment instanceof HttpVersionPolicy ?
                                (HttpVersionPolicy) attachment : HttpVersionPolicy.NEGOTIATE;
                        final String[] appProtocols;
                        switch (versionPolicy) {
                            case FORCE_HTTP_1:
                                appProtocols = new String[] { ApplicationProtocols.HTTP_1_1.id };
                                break;
                            case FORCE_HTTP_2:
                                appProtocols = new String[] { ApplicationProtocols.HTTP_2.id };
                                break;
                            default:
                                appProtocols = new String[] { ApplicationProtocols.HTTP_2.id, ApplicationProtocols.HTTP_1_1.id };
                        }
                        if (Conscrypt.isConscrypt(sslEngine)) {
                            sslEngine.setSSLParameters(sslParameters);
                            Conscrypt.setApplicationProtocols(sslEngine, appProtocols);
                        } else {
                            H2TlsSupport.setApplicationProtocols(sslParameters, appProtocols);
                            sslEngine.setSSLParameters(sslParameters);
                        }
                    },
                    (endpoint, sslEngine) -> {
                        if (Conscrypt.isConscrypt(sslEngine)) {
                            return new TlsDetails(sslEngine.getSession(), Conscrypt.getApplicationProtocol(sslEngine));
                        }
                        return null;
                    });
            return true;
        }
        return false;
    }

}

public static void main(String[] args) throws Exception {
    final SSLContext sslContext = SSLContexts.custom()
            .setProvider(Conscrypt.newProvider())
            .build();
    final PoolingAsyncClientConnectionManager cm = PoolingAsyncClientConnectionManagerBuilder.create()
            .setTlsStrategy(new ConscriptClientTlsStrategy(sslContext))
            .build();
    try (CloseableHttpAsyncClient client = HttpAsyncClients.custom()
            .setVersionPolicy(HttpVersionPolicy.NEGOTIATE)
            .setConnectionManager(cm)
            .build()) {

        client.start();

        final HttpHost target = new HttpHost("nghttp2.org", 443, "https");
        final String requestUri = "/httpbin";
        final HttpClientContext clientContext = HttpClientContext.create();

        final SimpleHttpRequest request = SimpleHttpRequests.GET.create(target, requestUri);
        final Future<SimpleHttpResponse> future = client.execute(
                SimpleRequestProducer.create(request),
                SimpleResponseConsumer.create(),
                clientContext,
                new FutureCallback<SimpleHttpResponse>() {

                    @Override
                    public void completed(final SimpleHttpResponse response) {
                        System.out.println(requestUri + "->" + response.getCode() + " " +
                                clientContext.getProtocolVersion());
                        System.out.println(response.getBody());
                        final SSLSession sslSession = clientContext.getSSLSession();
                        if (sslSession != null) {
                            System.out.println("SSL protocol " + sslSession.getProtocol());
                            System.out.println("SSL cipher suite " + sslSession.getCipherSuite());
                        }
                    }

                    @Override
                    public void failed(final Exception ex) {
                        System.out.println(requestUri + "->" + ex);
                    }

                    @Override
                    public void cancelled() {
                        System.out.println(requestUri + " cancelled");
                    }

                });
        future.get();

        System.out.println("Shutting down");
        client.shutdown(CloseMode.GRACEFUL);
    }
}