Retrofit OkHttp SSLHandshakeException

Question

我在Retrofit中使用OkHttp作为客户端。我无法访问特定的https url。该服务器仅支持TLS 1.0和以下密码 TLS_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_RC4_128_MD5

下面是我实例化OkHttpClient的方式：

    OkHttpClient client = new OkHttpClient();

    try {
        // Create a trust manager that does not validate certificate chains
        final TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
            @Override
            public void checkClientTrusted(
                    java.security.cert.X509Certificate[] chain,
                    String authType) throws CertificateException {
            }

            @Override
            public void checkServerTrusted(
                    java.security.cert.X509Certificate[] chain,
                    String authType) throws CertificateException {
            }

            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        }};

        // Install the all-trusting trust manager
        final SSLContext sslContext = SSLContext.getInstance("TLSv1");
        sslContext.init(null, trustAllCerts, new java.security.SecureRandom());

        // Create an ssl socket factory with our all-trusting manager
        final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
        client.setSslSocketFactory(sslSocketFactory);

        client.setHostnameVerifier(new HostnameVerifier() {
            @Override
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        });
    } catch (Exception e) {
        throw new RuntimeException(e);
    }


    return client;
}

我的应用程序一直抛出这个异常:

javax.net.ssl.SSLProtocolException: SSL 握手中止: ssl=0x9742f000: SSL 库中的故障，通常是协议错误 error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure (external/openssl/ssl/s23_clnt.c:770 0xab9fcc4d:0x00000000)

注：该异常可能是由于 SSL 版本不兼容导致的。

- IgorGanapolsky

Answer 1

自OkHttp v2.3（发布说明）起，默认配置不再支持RC4。您可以使用ConnectionSpec（javadoc）启用它，ConnectionSpecTest.java（源代码）中提供了一些示例。

- Barend

---

supportsTlsExtensions(true)是关键。你帮我节省了很多时间，谢谢！ - IgorGanapolsky

感谢 supportsTlsExtensions(true) 的支持，问题已解决。 - Mahmoud.M