bluepadclient.java

E-WhiteBoard with Bluetooth

//------------------------------------------------------------------
//  ____                      _____      _                           
// / ___|  ___  _ __  _   _  | ____|_ __(_) ___ ___ ___  ___  _ __   
// \___ \ / _ \| '_ \| | | | |  _| | '__| |/ __/ __/ __|/ _ \| '_ \  
//  ___) | (_) | | | | |_| | | |___| |  | | (__\__ \__ \ (_) | | | | 
// |____/ \___/|_| |_|\__, | |_____|_|  |_|\___|___/___/\___/|_| |_| 
//                    |___/                                          
//------------------------------------------------------------------
// Copyright (c) 2003 Sony Ericsson Mobile Communications AB
//                    Research Trinagle Park, NC 27709
//  
// This software is provided "AS IS," without a warranty of any kind. 
// ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 
// INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 
// PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
//
//------------------------------------------------------------------
package example.bluetooth;

import javax.bluetooth.*;  
import java.io.IOException;
import javax.microedition.io.*;

/**
 * The BluePadClient starts a BlueTooth client connection and 
 * attempts to connect to the server on the specified remote device.
 * Handles the client-specific funcionality.
 *
 * @author Paul H. Nichols
 * @version 1.0
 */
class BluePadClient extends Thread {

    private BluePad bluePad;
    private L2CAPConnection conn = null;
    private ServiceRecord record;
    private String conURL;


    public BluePadClient(BluePad pad, ServiceRecord record) {
        this.bluePad = pad;
        this.record = record;
    }

    public BluePadClient(BluePad pad, String URL) {
        this.bluePad = pad;
        this.conURL = URL;
        pad.printString("URL: " + conURL);
    }

    public void run() {
        try {
            if (conURL == null) {
                if (record == null) {
                    bluePad.printString("No record!");
                    return;
                }

                int security = ServiceRecord.AUTHENTICATE_NOENCRYPT;  // NOAUTHENTICATE_NOENCRYPT, AUTHENTICATE_ENCRYPT, AUTHENTICATE_NOENCRYPT
                boolean master = false;
                conURL = record.getConnectionURL(security, master);
            }

            int index= conURL.indexOf(':');
            String protocol= conURL.substring(0, index);

            // Must be L2CAPP
            if (!protocol.equals("btl2cap")) {
                bluePad.printString("Wrong protocol: " + protocol);
                return;
            }

            conn = (L2CAPConnection)Connector.open(conURL);
            int length = conn.getReceiveMTU();
            bluePad.setStateConnected(conn);


            byte data[] = new byte[length];
            length = conn.receive(data);

            while (length != -1) {
                bluePad.receiveData(data, 0, length);

                try {
                    length = conn.receive(data);
                }
                catch (IOException e) {
                    break;
                }
            }
        }
        catch (Exception e) {
            bluePad.printString("Exception (c1): " + e.getMessage());
        }
        finally {
            close();
        }

    } // run


    /**
     * Close down the client and notify the bluePad that the
     * state is now disconnected.
     */
    public void close() {
        if (conn == null) {
            return;
        }

        try {
            conn.close();
        }
        catch (IOException e) {
        }

        conn = null;
        bluePad.setStateDisconnected();
    }



}