改造OkHttp SSLHandshakeException

Question

我正在使用OkHttp作为Retrofit的客户端。我无法按下某个https url。此服务器只支持TLS1.0和以下密码：TLS_RSA_WITH_RC4_128_SHA、TLS_RSA_WITH_RC4_128_MD5

下面是如何实例化我的OkHttpClient：

    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;
}

我的应用程序一直在抛出这个异常：

javax.net.ssl.SSLProtocolException: SSL握手中止: ssl=0x9742f000: SSL库中的失败，通常是协议错误:14077410:ssl routines:SSL23_GET_SERVER_HELLO:sslv3警报握手失败(外部/routines:SSL23_GET_SERVER_HELLO:sslv3/ssl/s23_clnt.c:7700xab9fcc4d:0x00000000)

Answer 1

OkHttp在默认配置中不再支持RC4，因为OkHttp v2.3 (发布说明)。您可以使用ConnectionSpec (javadoc)来启用它，ConnectionSpecTest.java (源代码)显示了一些示例。