Thanks for your suggestion. Yes I had not set the INTERNET permission
in my
AndroidManifest.xml. I have updated that now and the socket exception
has changed
to being about being unable to resolve the domain name of a http proxy
server
I am located behind. I have noticed other threads where http-proxy
usage has been
problematic.
> Did you add <uses-permission
> android:name="android.permission.INTERNET" /> tag to your
> AndroidManifest.xml?
> The new SDK requires that permission for network calls.
> sacoskun
> On Aug 21, 6:13 pm, Graeme <graeme.br...@btinternet.com> wrote:
> > Hi everyone
> > I'm trying to figure out how to use HttpClient 4.x to do POST requests
> > routed via
> > a Proxy server. I'm seeing a socket exception triggered by calling
> > DefaultHttpClient.execute(HttpHost target, HttpRequest method). My
> > HttpPoster class looks like
> > package com.bt.gcto.android.testhttp;
> > import java.io.IOException;
> > import java.util.Hashtable;
> > import org.apache.http.Header;
> > import org.apache.http.HttpEntity;
> > import org.apache.http.HttpHost;
> > import org.apache.http.HttpResponse;
> > import org.apache.http.HttpVersion;
> > import org.apache.http.client.HttpClient;
> > import org.apache.http.client.methods.HttpPost;
> > import org.apache.http.conn.ClientConnectionManager;
> > import org.apache.http.conn.params.ConnRoutePNames;
> > import org.apache.http.conn.scheme.PlainSocketFactory;
> > import org.apache.http.conn.scheme.Scheme;
> > import org.apache.http.conn.scheme.SchemeRegistry;
> > import org.apache.http.conn.scheme.SocketFactory;
> > import org.apache.http.conn.ssl.SSLSocketFactory;
> > import org.apache.http.impl.client.DefaultHttpClient;
> > import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
> > import org.apache.http.params.BasicHttpParams;
> > import org.apache.http.params.HttpParams;
> > import org.apache.http.params.HttpProtocolParams;
> > import org.apache.http.util.EntityUtils;
> > import android.net.Uri;
> > import android.util.Log;
> > public class HttpPoster {
> > private final String TAG="HttpPoster";
> > private final String NETWORK_DEVICE_SIDE_TRUE =
> > ";deviceside=true";
> > private final String NETWORK_DEVICE_SIDE_FALSE =
> > ";deviceside=false";
> > private final String NETWORK_WIFI = ";interface=wifi";
> > //private final String proxy="proxy.intra.bt.com:8080";
> > private boolean useWifi;
> > private boolean deviceSide;
> > // Apache HttpClient 4.x stuff
> > private static HttpParams defaultParameters = null;
> > private static SchemeRegistry supportedSchemes = null;
> > /**
> > * Performs general setup.
> > * This should be called only once.
> > */
> > private final static void setup() {
> > supportedSchemes = new SchemeRegistry();
> > // Register the "http" and "https" protocol schemes, they are
> > // required by the default operator to look up socket
> > factories.
> > SocketFactory sf = PlainSocketFactory.getSocketFactory();
> > supportedSchemes.register(new Scheme("http", sf, 80));
> > sf = SSLSocketFactory.getSocketFactory();
> > supportedSchemes.register(new Scheme("https", sf, 80));
> > // prepare parameters
> > HttpParams params = new BasicHttpParams();
> > HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
> > HttpProtocolParams.setContentCharset(params, "UTF-8");
> > HttpProtocolParams.setUseExpectContinue(params, true);
> > defaultParameters = params;
> > } // setup
> > private final static HttpParams getParams() {
> > return defaultParameters;
> > }
> > HttpPoster(boolean deviceSide, boolean useWifi) {
> > this.useWifi = useWifi;
> > this.deviceSide = deviceSide;
> > System.err.println("HttpPoster::HttpPoster");
> > }
> > public String post(String url,
> > Hashtable<String,String> headerProperties, byte[] bytes )
> > throws IOException {
> > HttpClient client = null;
> > HttpPost method=null;
> > //InputStream is = null;
> > //OutputStream os = null;
> > //String response = "";
> > HttpResponse rsp = null;
> > HttpEntity entity=null;
> > String fullUrl;
> > //int rc;
> > Log.d(TAG,"post() ---ENTER---");
> > Log.d(TAG,"HttpPoster::post");
> > Log.d(TAG,"http.proxyHost = " +
> > System.getProperty("http.proxyHost"));
> > Log.d(TAG,"http.proxyPort = " +
> > System.getProperty("http.proxyPort"));
> > try {
> > fullUrl = url + (deviceSide ? NETWORK_DEVICE_SIDE_TRUE :
> > NETWORK_DEVICE_SIDE_FALSE)
> > + (useWifi ? NETWORK_WIFI : "");
> > Uri fullUri = Uri.parse( fullUrl );
> > String targetname = fullUri.getHost();
> > Log.d(TAG,"HttpPoster::post -- about to open connection
> > on URL = " + fullUrl);
> > //
> > // setup proxy server
> > //
> > final HttpHost target = new HttpHost(targetname, 80,
> > "http");
> > final HttpHost proxy = new HttpHost("proxy.mycompany.com",
> > 8080, "http");
> > setup() ; // Some general setup
> > client = new DefaultHttpClient() ;
> > client.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
> > method = new HttpPost( fullUrl );
> > Log.d(TAG,"Executing request to " + target + " via " +
> > proxy);
> > rsp = client.execute(target, method);
> > entity = rsp.getEntity();
> > Log.d(TAG,"---------------------------------------------");
> > Log.d(TAG, rsp.getStatusLine().toString() );
> > Header [] headers = rsp.getAllHeaders();
> > for (int i=0; i<headers.length; i++) {
> > Log.d(TAG,"\t" + headers[i] );
> > }
> > Log.d(TAG,"---------------------------------------------");
> > if (rsp.getEntity() != null) {
> > Log.d(TAG, EntityUtils.toString( rsp.getEntity() ) );
> > }
> > } finally {
> > if (entity != null)
> > entity.consumeContent(); // release connection gracefully
> > }
> > // return response;
> > Log.d(TAG,"post() ---EXIT---");
> > return new String("");
> > }
> > private final static HttpClient createHttpClient() {
> > ClientConnectionManager ccm =
> > new ThreadSafeClientConnManager(getParams(),
> > supportedSchemes);
> > // new SingleClientConnManager(getParams(),
> > supportedSchemes);
> > DefaultHttpClient dhc =
> > new DefaultHttpClient(ccm, getParams());
> > return dhc;
> > }
> > }
> > My TestHttp application launches an Activity TestHttp::onCreate()
> > method whose DDMS logcat output is
> > 08-21 14:25:54.189: DEBUG/TestHttp(238): onCreate()---enter---
> > 08-21 14:25:54.248: DEBUG/TestHttp(238): httpClient is non-null
> > 08-21 14:25:54.398: DEBUG/TestHttp(238): in catch {} response is null
> > 08-21 14:25:54.418: ERROR/TestHttp(238): Error
> > 08-21 14:25:54.418: ERROR/TestHttp(238): java.net.SocketException:
> > unknown error
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.harmony.luni.platform.OSNetworkSystem.createSocketImpl(Native
> > Method)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.harmony.luni.platform.OSNetworkSystem.createSocket(OSNetworkSyst em.java:
> > 79)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.harmony.luni.net.PlainSocketImpl2.create(PlainSocketImpl2.java:
> > 59)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > java.net.Socket.checkClosedAndCreate(Socket.java:763)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > java.net.Socket.connect(Socket.java:910)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFac tory.java:
> > 117)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(De faultClientConnectionOperator.java:
> > 129)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:
> > 164)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> > org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConn Adapter.java:
> > 119)
> > 08-21 14:25:54.418: ERROR/TestHttp(238): at
> ...
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