我在 Android 中使用 Volley 来执行我的应用程序请求。不幸的是,我收到以下错误:
com.android.volley.NoConnectionError: javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x61e15f78: Failure in SSL library, usually a protocol error
error:1407743E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert inappropriate fallback (external/openssl/ssl/s23_clnt.c:744 0x5b647c58:0x00000000)
我在 ViewPager
中使用了两个 Fragments
,它们在 onResume 期间请求它们的内容。请求 url 基本相同,但用于查询参数(设置内容类型,例如趋势与热门)。
URL 的格式为 https://host/api/content?type={hot/trending}
。授权通过请求 header 完成。
关于此异常的奇怪之处在于,两个请求中只有一个失败,并且不时地改变哪个请求。在我在它们之间添加延迟后,异常停止发生(奇怪地指向某些竞争条件?)。但这似乎是一个糟糕的解决方法,我想以正确的方式解决这个问题。
有什么想法可能是它的原因吗?
编辑:
请求以标准方式创建,使用提供队列的单例,如下所示:
final RequestQueue requestQueue = RequestQueueSingleton.getInstance(getActivity()).getRequestQueue();
final GsonRequestGet<SearchApiWrapper> gsonRequest = new GsonRequestGet<>(clazz, url,successListener, errorListener);
gsonRequest.setRetryPolicy(new DefaultRetryPolicy(3000, 3, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
gsonRequest.setTag(mTag);
requestQueue.add(gsonRequest);
这是单例类:
public class RequestQueueSingleton {
private static RequestQueueSingleton mInstance;
private RequestQueue mRequestQueue;
private Context mContext;
public RequestQueueSingleton(Context context) {
mContext = context;
mRequestQueue = getRequestQueue();
}
/**
* Returns a instance of this singleton
*/
public static synchronized RequestQueueSingleton getInstance(Context context) {
if (mInstance == null) {
mInstance = new RequestQueueSingleton(context);
}
return mInstance;
}
/**
* Returns instance of the request queue
*/
public RequestQueue getRequestQueue() {
if (mRequestQueue == null) {
mRequestQueue = Volley.newRequestQueue(mContext.getApplicationContext());
}
return mRequestQueue;
}
}
最佳答案
经过我们的评论,也许这可以帮助您:
您的请求队列
:
static {
requestQueue = Volley.newRequestQueue(Application.getContext(), new HurlStack(null, ClientSSLSocketFactory.getSocketFactory()));
}
ClientSSLSocketFactory
:
public class ClientSSLSocketFactory extends SSLCertificateSocketFactory {
private SSLContext sslContext;
public static SSLSocketFactory getSocketFactory(){
try
{
X509TrustManager tm = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] xcs, String string) throws CertificateException {}
public void checkServerTrusted(X509Certificate[] xcs, String string) throws CertificateException {}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory ssf = ClientSSLSocketFactory.getDefault(10000, new SSLSessionCache(Application.getInstance()));
return ssf;
} catch (Exception ex) {
return null;
}
}
@Override
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
}
@Override
public Socket createSocket() throws IOException {
return sslContext.getSocketFactory().createSocket();
}
}
关于android - 使用 Volley 时出现 SSL 异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30925213/