Android Open Source - innovativeproject-meetingdataexchange Check Is Server Exists

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License

The source code is released under:

MIT License

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Java Source Code

package serverCommunicator;
//  w  ww  .ja  va 2  s  . c om
import java.io.IOException;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

import com.TrololoCompany.meetingdataexchange.AddServerActivity;
import com.TrololoCompany.meetingdataexchange.AddServerActivitySuccess;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast;

public class CheckIsServerExists extends AsyncTask<String, Void, Void>
{
  private AddServerActivity activity;
  private String name;
  private static final String log="CheckIsServerExists";
  public CheckIsServerExists(AddServerActivity activity)
  {
    this.activity=activity;
    name=null;
  }
  @Override
  protected Void doInBackground(String... address)
  {

      try {
        
        HttpGet httpGet = new HttpGet("http://"+address[0]+"/api/general/getname");
        HttpParams httpParameters = new BasicHttpParams();
            HttpConnectionParams.setConnectionTimeout(httpParameters, 3000);
            HttpConnectionParams.setSoTimeout(httpParameters, 3000);
            HttpClient client = new DefaultHttpClient(httpParameters);
        HttpResponse response = null;
        Log.i(log,"response before");
      response = client.execute(httpGet);
      Log.i(log,"response");
      String result = EntityUtils.toString(response.getEntity());
          JSONObject obj= new JSONObject(result);
          name=(String) obj.get("servername");
    } catch (ClientProtocolException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }  catch (JSONException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
      catch (ConnectTimeoutException e) {
      name=null;
    }
      catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    
  
    return null;
  }

  @Override
  protected void onPostExecute(Void result) 
  {
    if(name==null)
    {
      activity.connection_failed();
    }
    else
    {
      activity.connection_succes(name);
    }
    
    
  }
  
    

}

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