Question

我正在使用

 classpath 'com.android.tools.build:gradle:3.2.1'

 distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

并且每次我尝试连接服务器API时都会超时。

HTTP失败：java.net.SocketTimeoutException

我的服务器API非常好，我已经用邮递员和直接URL测试了它。解决此问题的唯一方法是降级到3.0.4 gradle插件或将android设备连接到VPN。我来自伊朗，我怀疑我的国家/地区的服务器是否存在访问问题。我什至尝试为HTTPClient设置长超时，但是在每个单独的API上我仍然遇到相同的错误。但是，经过20-30次重试后，我最终只能收到1个成功的响应。

我正在使用Retrofit2。

我也尝试在清单中设置此设置，但未更改

android:usesCleartextTraffic="true"

还有其他人在为这个问题苦苦挣扎吗？有人有解决办法吗？

Answer 1

我发现了问题！自签名SSL服务器存在问题。解决方法是：您必须创建一个UnsafeClient类，然后将其设置为翻新的客户端。

public class UnsafeOkHttpClient {  
public 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);
    }
  }
}

OkHttpClient okHttpClient = UnsafeOkHttpClient.getUnsafeOkHttpClient();

Retrofit.Builder builder = new Retrofit.Builder()  
    .baseUrl("BASEURL")
    .client(okHttpClient);

HTTP失败：java.net.SocketTimeoutException：新的Android Gradle超时

1 个答案: