Android 应用程序在 WIFI 和 3G（无代理）上工作，但在 3G 上不工作（如果分配了代理和端口）

Posted 2023-04-15

【中文标题】Android 应用程序在 WIFI 和 3G（无代理）上工作，但在 3G 上不工作（如果分配了代理和端口）

【英文标题】：Android application working on WIFI and 3G(Without proxy), but not working on 3G(If proxy and port are assigned)

【发布时间】：2012-09-19 00:10:08

【问题描述】：

我遇到了一些奇怪的问题，当我切换到 3G 服务（带代理）时，只有我的应用程序无法正常工作，但它在 WIFI 和 3G（不带代理）中运行良好。

我的 Starhub（网络提供商）提供的默认代理和端口：

Proxy: 10.12.1.2
Port: 80

对于数据，我正在向我的网络服务器发送肥皂请求。

这是我的代码：

public class SearchThread extends Thread 
private String mUrl;
private SoapSerializationEnvelope mEnvelop;
private Handler mHandler;
private String mSoapAction;
private KeepAliveHttpsTransportSE mTransport;

public SearchThread(String url) 
    this.mUrl = url;


@Override
public void run() 
    mEnvelop = new SoapSerializationEnvelope(SoapSerializationEnvelope.VER11);
    mEnvelop.setOutputSoapObject(interfaceListener.getSoapObject(element));
    mSoapAction = interfaceListener.getSoapAction(element);
    try 
        TrustManagerManipulator.allowAllSSL();
        mTransport = new KeepAliveHttpsTransportSE(URLS.URL_MAIN, 443, mUrl, 60000);
        mTransport.call(mSoapAction, mEnvelop);
        if (this.isInterrupted()) 
            Log.v(TAG,"Interrupted");
            return;
        
        recevedSoapResponse(mEnvelop.getResponse());
     catch (SocketException ex) 
        Log.e("Error : ", "Error on soapPrimitiveData() " + ex.getMessage());
        ex.printStackTrace();
     catch (IOException e) 
        interfaceListener.recievedParsingResults(
                PARSER.RESULT.CONNECTION_FAILED, element, mHandler, mView);
        e.printStackTrace();
     catch (XmlPullParserException e) 
        e.printStackTrace();
        interfaceListener.recievedParsingResults(
                PARSER.RESULT.INTERNAL_ERROR, element, mHandler, mView);
    

private void recevedSoapResponse(Object response) 
   //Parsing XML here.

public class KeepAliveHttpsTransportSE extends HttpsTransportSE

    private final String host;
    private final int port;
    private final String file;
    private final int timeout;
    private ServiceConnection serviceConnection;

    public KeepAliveHttpsTransportSE (String host, int port, String file, int timeout) 
        super(host, port, file, timeout);
        this.host = host;
        this.port = port;
        this.file = file;
        this.timeout = timeout;
    
 //@Override
    public ServiceConnection getServiceConnection() throws IOException
    
        if (serviceConnection == null) 
            serviceConnection = new HttpsServiceConnectionSE(host, port, file, timeout);
            serviceConnection.setRequestProperty("Connection", "keep-alive");
        
        return serviceConnection;
    

这是我的 SSL 代码：

public class TrustManagerManipulator implements X509TrustManager 
    private static TrustManager[] trustManagers;
    private static final X509Certificate[] acceptedIssuers = new X509Certificate[] ;

public boolean isClientTrusted(X509Certificate[] chain) 
    return true;


public boolean isServerTrusted(X509Certificate[] chain) 
    return true;


public static void allowAllSSL() 
    HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() 
        public boolean verify(String hostname, SSLSession session) 
            return true;
        
    );
    SSLContext context = null;
    if (trustManagers == null) 
        trustManagers = new TrustManager[]  new TrustManagerManipulator() ;
    
    try 
        context = SSLContext.getInstance("TLS");
        context.init(null, trustManagers, new SecureRandom());
     catch (NoSuchAlgorithmException e) 
        e.printStackTrace();
     catch (KeyManagementException e) 
        e.printStackTrace();
    
    HttpsURLConnection.setDefaultSSLSocketFactory(context
            .getSocketFactory());


public void checkClientTrusted(X509Certificate[] chain, String authType)
        throws CertificateException 


public void checkServerTrusted(X509Certificate[] chain, String authType)
        throws CertificateException 


public X509Certificate[] getAcceptedIssuers() 
    return acceptedIssuers;

例外：

09-27 12:21:03.295: W/System.err(8924): java.net.SocketException: Socket is closed
09-27 12:21:03.295: W/System.err(8924):     at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.checkOpen(OpenSSLSocketImpl.java:262)
09-27 12:21:03.295: W/System.err(8924):     at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:273)
09-27 12:21:03.295: W/System.err(8924):     at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:257)
09-27 12:21:03.295: W/System.err(8924):     at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:210)
09-27 12:21:03.295: W/System.err(8924):     at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:477)
09-27 12:21:03.295: W/System.err(8924):     at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:441)
09-27 12:21:03.295: W/System.err(8924):     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
09-27 12:21:03.295: W/System.err(8924):     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
09-27 12:21:03.295: W/System.err(8924):     at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80)
09-27 12:21:03.300: W/System.err(8924):     at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:188)
09-27 12:21:03.300: W/System.err(8924):     at libcore.net.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:280)
09-27 12:21:03.300: W/System.err(8924):     at org.ksoap2.transport.HttpsServiceConnectionSE.openOutputStream(HttpsServiceConnectionSE.java:98)
09-27 12:21:03.300: W/System.err(8924):     at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:157)
09-27 12:21:03.300: W/System.err(8924):     at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:96)
09-27 12:21:03.300: W/System.err(8924):     at com.mobile.utils.parser.SearchThread.run(SearchThread.java:25)

附加信息：所有其他应用程序都在 3G 网络上运行（带/不带代理设置）并且在我的应用程序中只有 SOAP 请求不起作用。

我已经尝试了所有可能的情况，但没有运气。请提供一些意见。

提前致谢。

【参考方案1】：

也许你们四个太晚了，但我希望这对未来像我一样到达这里的人有所帮助，因为同样的问题而疯狂。

这是一个 Android 错误。一切都适用于 WiFi，但它在 3G 上崩溃。它发生在我的 4.1 上，但在 4.2.2 上没有问题。

要解决这个问题，您必须修改文件 org.ksoap2.transport.HttpTransportSE（我扩展了一个新文件并将其命名为 MyHttpTransportSE，因为我使用的是 ksoap2 程序集 jar）。 只需覆盖方法 public void call(String soapAction, SoapEnvelope envelope) 注释掉该行

    //connection.setRequestProperty("Connection", "close"); 

当然，如果您使用 SSL，则需要从新的 MyHttpTransportSE 扩展您自己的 HttpsTransportSE。

HttpTransportSE源代码：https://github.com/karlmdavis/ksoap2-android/blob/master/ksoap2-j2se/src/main/java/org/ksoap2/transport/HttpTransportSE.java?source=c

HttpsTransportSE源代码：https://github.com/mosabua/ksoap2-android/blob/master/ksoap2-j2se/src/main/java/org/ksoap2/transport/HttpsTransportSE.java

更多细节在这里：https://groups.google.com/forum/#!searchin/ksoap2-android/closed/ksoap2-

【参考方案2】：

正如 Ender Muab'Dib 所说，您必须将“连接”属性设置为“关闭”。但是没有必要扩展 HttpTransportSE。根据您的代码编写方式，可能更容易将第三个参数传递给“调用”函数，该函数是参数列表。

ArrayList<HeaderProperty> headerPropertyArrayList = new ArrayList<HeaderProperty>();
headerPropertyArrayList.add(new HeaderProperty("Connection", "close"));
transport.call(soapAction, envelope, headerPropertyArrayList);