android - 使用 okHttp 信任所有证书

Question

出于测试目的，我正在尝试向我的 okHttp 客户端添加一个套接字工厂，该客户端在设置代理时信任所有内容。这已经完成了很多次，但我对信任套接字工厂的实现似乎遗漏了一些东西:

class TrustEveryoneManager implements 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;
    }
}
OkHttpClient client = new OkHttpClient();

final InetAddress ipAddress = InetAddress.getByName("XX.XXX.XXX.XXX"); // some IP
client.setProxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress(ipAddress, 8888)));

SSLContext sslContext = SSLContext.getInstance("TLS");
TrustManager[] trustManagers = new TrustManager[]{new TrustEveryoneManager()};
sslContext.init(null, trustManagers, null);
client.setSslSocketFactory(sslContext.getSocketFactory);

我的应用程序没有发出任何请求，也没有记录任何异常，因此它似乎在 okHttp 中悄无声息地失败了。经过进一步调查，在强制握手时，okHttp 的 Connection.upgradeToTls() 中似乎有一个异常被吞没了。我得到的异常是:javax.net.ssl.SSLException: SSL handshake terminated: ssl=0x74b522b0: SSL_ERROR_ZERO_RETURN occurred。你不应该看到这个。

以下代码生成一个 SSLContext，它在创建一个不抛出任何异常的 SSLSocketFactory 时就像一个魅力:

protected SSLContext getTrustingSslContext() throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {
    final SSLContextBuilder trustingSSLContextBuilder = SSLContexts.custom()
            .loadTrustMaterial(null, new TrustStrategy() {
                @Override
                public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                    return true; // Accepts any ssl cert whether valid or not.
                }
            });
    return trustingSSLContextBuilder.build();
}

问题是我试图从我的应用程序中完全删除所有 Apache HttpClient 依赖项。使用 Apache HttpClient 生成 SSLContext 的底层代码看起来很简单，但我显然遗漏了一些东西，因为我无法配置我的 SSLContext 来匹配它。

有没有人能够在不使用 Apache HttpClient 的情况下生成一个 SSLContext 实现来执行我想要的操作？

Answer 1

以防万一有人掉在这里，对我有用的(唯一)解决方案是创建 OkHttpClient，如 here 所解释的那样.

代码如下:

private static OkHttpClient getUnsafeOkHttpClient() {
  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 new java.security.cert.X509Certificate[]{};
          }
        }
    };

    // Install the all-trusting trust manager
    final SSLContext sslContext = SSLContext.getInstance("SSL");
    sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
    // Create an ssl socket factory with our all-trusting manager
    final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

    OkHttpClient.Builder builder = new OkHttpClient.Builder();
    builder.sslSocketFactory(sslSocketFactory, (X509TrustManager)trustAllCerts[0]);
    builder.hostnameVerifier(new HostnameVerifier() {
      @Override
      public boolean verify(String hostname, SSLSession session) {
        return true;
      }
    });

    OkHttpClient okHttpClient = builder.build();
    return okHttpClient;
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}