我一直在研究如何使用 conscrypt-openjdk-uber-1.4.1.jar 来实现 Conscrypt SSL提供程序，以便jdk8支持 ALPN 用于建立 http2（使用apache httpclient 5）与服务器的连接，因为 jdk8默认不支持ALPN ，或者另一种解决方案是迁移到jdk9（或更高版本）目前尚不可行，因为我们的产品严重依赖于jdk8
我一直在广泛搜索一些要实施的文档或示例，但找不到。
我尝试将conscrypt提供程序作为默认提供程序插入，我的程序将其用作默认提供程序，但仍然无法与http2服务器连接，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);
}
此程序将输出显示为
org.apache.hc.core5.http.ConnectionClosedException：连接已关闭 org.apache.hc.core5.http.ConnectionClosedException：连接已关闭 在org.apache.hc.core5.http2.impl.nio.FrameInputBuffer.read（FrameInputBuffer.java:146） 在org.apache.hc.core5.http2.impl.nio.AbstractHttp2StreamMultiplexer.onInput（AbstractHttp2StreamMultiplexer.java:415） 在org.apache.hc.core5.http2.impl.nio.AbstractHttp2IOEventHandler.inputReady（AbstractHttp2IOEventHandler.java:63） 在org.apache.hc.core5.http2.impl.nio.ClientHttp2IOEventHandler.inputReady（ClientHttp2IOEventHandler.java:38） 在org.apache.hc.core5.reactor.InternalDataChannel.onIOEvent（InternalDataChannel.java:117） 在org.apache.hc.core5.reactor.InternalChannel.handleIOEvent（InternalChannel.java:50） 在org.apache.hc.core5.reactor.SingleCoreIOReactor.processEvents（SingleCoreIOReactor.java:173） 在org.apache.hc.core5.reactor.SingleCoreIOReactor.doExecute（SingleCoreIOReactor.java:123） 在org.apache.hc.core5.reactor.AbstractSingleCoreIOReactor.execute（AbstractSingleCoreIOReactor.java:80） 在org.apache.hc.core5.reactor.IOReactorWorker.run（IOReactorWorker.java:44） 在java.lang.Thread.run（Thread.java:748）
如果我打印提供程序和版本，它将打印为 Conscrypt版本1.0 和 JDK 1.8.0_162 ，但仍然无法与http2端点连接
如果我使用带有默认提供程序的jdk9进行连接，则相同的代码块可以完美地工作，在conscrypt配置中我缺少什么？
感谢您的帮助
预先感谢
答案 0 :(得分：2)
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);
}
}