如何在HttpClient上更改支持的TLS版本？
我正在做：
SSLContext sslContext = SSLContext.getInstance("TLSv1.1");
sslContext.init(
keymanagers.toArray(new KeyManager[keymanagers.size()]),
null,
null);
SSLSocketFactory socketFactory = new SSLSocketFactory(sslContext, new String[]{"TLSv1.1"}, null, null);
Scheme scheme = new Scheme("https", 443, socketFactory);
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(scheme);
BasicClientConnectionManager cm = new BasicClientConnectionManager(schemeRegistry);
httpClient = new DefaultHttpClient(cm);
但是当我检查创建的套接字时，它仍然说支持的协议是TLSv1.0，TLSv1.1和TLSv1.2。
实际上，我只是希望它停止使用TLSv1.2，对于这个特定的HttpClient。
解决方案是：
SSLContext sslContext = SSLContexts.custom()
.useTLS()
.build();
SSLConnectionSocketFactory f = new SSLConnectionSocketFactory(
sslContext,
new String[]{"TLSv1", "TLSv1.1"},
null,
BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
httpClient = HttpClients.custom()
.setSSLSocketFactory(f)
.build();
这需要org.apache.httpcomponents.httpclient 4.3.x。
这就是我如何使用httpClient 4.5（根据Olive Tree请求）：
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(
new AuthScope(AuthScope.ANY_HOST, 443),
new UsernamePasswordCredentials(this.user, this.password));
SSLContext sslContext = SSLContexts.createDefault();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext,
new String[]{"TLSv1", "TLSv1.1"},
null,
new NoopHostnameVerifier());
CloseableHttpClient httpclient = HttpClients.custom()
.setDefaultCredentialsProvider(credsProvider)
.setSSLSocketFactory(sslsf)
.build();
return httpclient;
HttpClient-4.5，使用TLSv1.2，你必须这样编码：
//Set the https use TLSv1.2
private static Registry<ConnectionSocketFactory> getRegistry() throws KeyManagementException, NoSuchAlgorithmException {
SSLContext sslContext = SSLContexts.custom().build();
SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext,
new String[]{"TLSv1.2"}, null, SSLConnectionSocketFactory.getDefaultHostnameVerifier());
return RegistryBuilder.<ConnectionSocketFactory>create()
.register("http", PlainConnectionSocketFactory.getSocketFactory())
.register("https", sslConnectionSocketFactory)
.build();
}
public static void main(String... args) {
try {
//Set the https use TLSv1.2
PoolingHttpClientConnectionManager clientConnectionManager = new PoolingHttpClientConnectionManager(getRegistry());
clientConnectionManager.setMaxTotal(100);
clientConnectionManager.setDefaultMaxPerRoute(20);
HttpClient client = HttpClients.custom().setConnectionManager(clientConnectionManager).build();
//Then you can do : client.execute(HttpGet or HttpPost);
} catch (KeyManagementException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
对于使用TLSv1.2的HttpClient-4.1，代码将是这样的：
SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
sslContext.init(null, null, new SecureRandom());
SSLSocketFactory sf = new SSLSocketFactory(sslContext);
Scheme httpsScheme = new Scheme("https", 443, sf);
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(httpsScheme);
ClientConnectionManager cm = new SingleClientConnManager(schemeRegistry);
HttpClient client = new DefaultHttpClient(cm);
// Use client to make the connection and get the results.
使用HttpClient 4.5.x中的HttpClientBuilder和自定义HttpClientConnectionManager，默认值为HttpClientBuilder：
SSLConnectionSocketFactory sslConnectionSocketFactory =
new SSLConnectionSocketFactory(SSLContexts.createDefault(),
new String[] { "TLSv1.2" },
null,
SSLConnectionSocketFactory.getDefaultHostnameVerifier());
PoolingHttpClientConnectionManager poolingHttpClientConnectionManager =
new PoolingHttpClientConnectionManager(
RegistryBuilder.<ConnectionSocketFactory> create()
.register("http",
PlainConnectionSocketFactory.getSocketFactory())
.register("https",
sslConnectionSocketFactory)
.build());
// Customize the connection pool
CloseableHttpClient httpClient = HttpClientBuilder.create()
.setConnectionManager(poolingHttpClientConnectionManager)
.build()
没有自定义HttpClientConnectionManager：
SSLConnectionSocketFactory sslConnectionSocketFactory =
new SSLConnectionSocketFactory(SSLContexts.createDefault(),
new String[] { "TLSv1.2" },
null,
SSLConnectionSocketFactory.getDefaultHostnameVerifier());
CloseableHttpClient httpClient = HttpClientBuilder.create()
.setSSLSocketFactory(sslConnectionSocketFactory)
.build()
如果您使用的是httpclient 4.2，那么您需要编写一些额外的代码。我希望能够自定义“TLS启用的协议”（例如TLSv1.1，特别是TLSv1和TLSv1.2）以及cipher suites。
public class CustomizedSSLSocketFactory
extends SSLSocketFactory
{
private String[] _tlsProtocols;
private String[] _tlsCipherSuites;
public CustomizedSSLSocketFactory(SSLContext sslContext,
X509HostnameVerifier hostnameVerifier,
String[] tlsProtocols,
String[] cipherSuites)
{
super(sslContext, hostnameVerifier);
if(null != tlsProtocols)
_tlsProtocols = tlsProtocols;
if(null != cipherSuites)
_tlsCipherSuites = cipherSuites;
}
@Override
protected void prepareSocket(SSLSocket socket)
{
// Enforce client-specified protocols or cipher suites
if(null != _tlsProtocols)
socket.setEnabledProtocols(_tlsProtocols);
if(null != _tlsCipherSuites)
socket.setEnabledCipherSuites(_tlsCipherSuites);
}
}
然后：
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, getTrustManagers(), new SecureRandom());
// NOTE: not javax.net.SSLSocketFactory
SSLSocketFactory sf = new CustomizedSSLSocketFactory(sslContext,
null,
[TLS protocols],
[TLS cipher suites]);
Scheme httpsScheme = new Scheme("https", 443, sf);
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(httpsScheme);
ConnectionManager cm = new BasicClientConnectionManager(schemeRegistry);
HttpClient client = new DefaultHttpClient(cmgr);
...
您可以使用稍微少一点的代码来执行此操作，但我主要从自定义组件中复制/粘贴，其中有意义的是以上面显示的方式构建对象。
如果您的代码中有javax.net.ssl.SSLSocket类引用，则可以通过调用SSLSocket.setEnabledProtocols()来设置启用的TLS协议：
import javax.net.ssl.*;
import java.net.*;
...
Socket socket = SSLSocketFactory.getDefault().createSocket();
...
if (socket instanceof SSLSocket) {
// "TLSv1.0" gives IllegalArgumentException in Java 8
String[] protos = {"TLSv1.2", "TLSv1.1"}
((SSLSocket)socket).setEnabledProtocols(protos);
}
您可以在服务器上指定以下属性-Dhttps.protocols = TLSv1.1，TLSv1.2，它配置JVM以指定在来自客户端的所有https连接期间应使用哪个TLS协议版本。
使用-Dhttps.protocols = TLSv1.2 JVM参数对我不起作用。有用的是以下代码
RequestConfig.Builder requestBuilder = RequestConfig.custom();
//other configuration, for example
requestBuilder = requestBuilder.setConnectTimeout(1000);
SSLContext sslContext = SSLContextBuilder.create().useProtocol("TLSv1.2").build();
HttpClientBuilder builder = HttpClientBuilder.create();
builder.setDefaultRequestConfig(requestBuilder.build());
builder.setProxy(new HttpHost("your.proxy.com", 3333)); //if you have proxy
builder.setSSLContext(sslContext);
HttpClient client = builder.build();
使用以下JVM参数进行验证
-Djavax.net.debug=all