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(OSNetworkSystem.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(PlainSocketFactory.java:
117)
08-21 14:25:54.418: ERROR/TestHttp(238): at
org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.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(AbstractPooledConnAdapter.java:
119)
08-21 14:25:54.418: ERROR/TestHttp(238): at
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:
348)
08-21 14:25:54.418: ERROR/TestHttp(238): at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:
555)
08-21 14:25:54.418: ERROR/TestHttp(238): at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:
509)
08-21 14:25:54.418: ERROR/TestHttp(238): at
com.bt.gcto.android.testhttp.HttpPoster.post(HttpPoster.java:115)
08-21 14:25:54.418: ERROR/TestHttp(238): at
com.bt.gcto.android.testhttp.TestHttp.onCreate(TestHttp.java:42)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1121)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2094)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2147)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.app.ActivityThread.access$1800(ActivityThread.java:112)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1572)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.os.Handler.dispatchMessage(Handler.java:88)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.os.Looper.loop(Looper.java:123)
08-21 14:25:54.418: ERROR/TestHttp(238): at
android.app.ActivityThread.main(ActivityThread.java:3708)
08-21 14:25:54.418: ERROR/TestHttp(238): at
java.lang.reflect.Method.invokeNative(Native Method)
08-21 14:25:54.418: ERROR/TestHttp(238): at
java.lang.reflect.Method.invoke(Method.java:492)
08-21 14:25:54.418: ERROR/TestHttp(238): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:734)
08-21 14:25:54.418: ERROR/TestHttp(238): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:492)
08-21 14:25:54.418: ERROR/TestHttp(238): at
dalvik.system.NativeStart.main(Native Method)
08-21 14:25:54.449: DEBUG/TestHttp(238): onCreate()---exit----
The TestHtpp Activity exercises HttpPoster::post() within its
onCreate() method, thus
public class TestHttp extends Activity {
private static final String TAG="TestHttp";
private DefaultHttpClient httpClient = null;
private final Uri galleryServerUri= Uri.parse("http://my-gallery-
server/gallery2/main.php");
private final String uname = "graeme";
private final String pwd = "123456";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
Log.d(TAG,"onCreate()---enter---");
super.onCreate(icicle);
setContentView(R.layout.main);
try {
HttpPoster poster = new HttpPoster(false, false) ;
poster.post( galleryServerUri.toString(), null,
null );
} catch (Exception e) {
Log.e(TAG, "Error", e);
}
Log.d(TAG,"onCreate()---exit----");
}
}
The logcat ouput from class HttpPoster is just ...
08-21 14:25:54.257: DEBUG/HttpPoster(238): post() ---ENTER---
08-21 14:25:54.257: DEBUG/HttpPoster(238): HttpPoster::post
08-21 14:25:54.257: DEBUG/HttpPoster(238): http.proxyHost = null
08-21 14:25:54.257: DEBUG/HttpPoster(238): http.proxyPort = null
08-21 14:25:54.269: DEBUG/HttpPoster(238): HttpPoster::post -- about
to open connection on URL =
http://my-gallery-server/gallery2/main.php;deviceside=false
08-21 14:25:54.289: DEBUG/HttpPoster(238): Executing request to
http://my-gallery-server:80 via http://proxy.mycompany.com:8080
I am running Android SDK-0.9 on and Windows XP SP2 devel machine.
Do I need to take any special; steps to enable the emulator to open
network
(socket) connections ?
Thanks for any help.
Graeme
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