如何在Apache HttpClient 4.5.x中设置TLS版本

Question

我一直在寻找一种使用Apache HttpClient时更改TLS版本的方法，并查看提供的许多示例，使用的版本始终为TLSv1.2而不是TLSv1.1。

 //Set the https use TLSv1.1
private static Registry<ConnectionSocketFactory> getRegistry() throws KeyManagementException, NoSuchAlgorithmException {
    SSLContext sslContext = SSLContexts.custom().build();
    SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext,
            new String[]{"TLSv1.1"}, 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 TLSv1.1
        PoolingHttpClientConnectionManager clientConnectionManager = new PoolingHttpClientConnectionManager(getRegistry());
        clientConnectionManager.setMaxTotal(100);
        clientConnectionManager.setDefaultMaxPerRoute(20);
        HttpClient client = HttpClients.custom().setConnectionManager(clientConnectionManager).build();
    } catch (KeyManagementException | NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
}

但是在测试之后，当我发送请求时，我的TLS版本仍然是TLSv1.2 (TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384)，而不是TLSv1.1。

谢谢。