ConnectHostReachable.java
3b0934336cdcmaster

ConnectHostReachable.java
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			package ch.epfl.pharma.network;

			import java.io.IOException;
			import java.net.Socket;
			import java.net.SocketAddress;

			import android.content.Context;
			import android.net.ConnectivityManager;
			import android.net.NetworkInfo;
			import android.os.AsyncTask;
			import ch.epfl.pharma.R;

			public class ConnectHostReachable extends AsyncTask<SocketAddress, Void, Boolean> {

			private Context mContext;

			public ConnectHostReachable(Context context) {
			super();
			this.mContext = context;
			}

			@Override
			protected Boolean doInBackground(SocketAddress... addresses) {

			// check that device has internet capability
			if (!isOnline(mContext)) {
			return false;
			}

			// check that host is online
			return isAddressReachable(addresses[0]);
			}

			private Boolean isAddressReachable(SocketAddress socketAddress) {

			Socket socket = new Socket();

			int timeout = mContext.getResources().getInteger(R.integer.connection_timeout);
			try {
			socket.connect(socketAddress, timeout);
			socket.close();
			return true;
			} catch (IOException e) {
			return false;
			}

			}

			private boolean isOnline(Context context) {
			ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo netInfo = cm.getActiveNetworkInfo();
			return netInfo != null && netInfo.isConnectedOrConnecting();
			}

			}