ipmodemdriver.java

华为编程开发规范与案例, 华为编程开发规范与案例,华为编程开发规范与案例

// SMSLib for Java v3
// A Java API library for sending and receiving SMS via a GSM modem
// or other supported gateways.
// Web Site: http://www.smslib.org
//
// SMSLib is distributed under the terms of the Apache License version 2.0
//
// Copyright (C) 2002-2007, Thanasis Delenikas, Athens/GREECE
// Portions Copyright:
// Davide Bettoni, Clusone/ITALY, [e-mail]
// Tomek Cejner, Polland, [e-mail]
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package org.smslib.gateway;

import java.util.*;
import java.io.*;
import org.apache.commons.net.telnet.*;

public class IPModemDriver extends ModemDriver
{
	private String ipAddress;

	private int ipPort;

	private TelnetClient tc;

	private InputStream in;

	private OutputStream out;

	private Peeker peeker;

	TerminalTypeOptionHandler ttopt = new TerminalTypeOptionHandler("VT100", false, false, true, false);

	EchoOptionHandler echoopt = new EchoOptionHandler(true, false, true, false);

	SuppressGAOptionHandler gaopt = new SuppressGAOptionHandler(true, true, true, true);

	protected IPModemDriver(ModemGateway gateway, String deviceParms)
	{
		super(gateway, deviceParms);

		StringTokenizer tokens = new StringTokenizer(deviceParms, ":");
		ipAddress = tokens.nextToken();
		ipPort = Integer.parseInt(tokens.nextToken());
		tc = null;
	}

	protected void connectPort() throws Exception
	{
		gateway.getLogger().info("Opening: " + ipAddress + " @" + ipPort);
		tc = new TelnetClient();
		tc.addOptionHandler(ttopt);
		tc.addOptionHandler(echoopt);
		tc.addOptionHandler(gaopt);
		tc.connect(ipAddress, ipPort);
		in = tc.getInputStream();
		out = tc.getOutputStream();
		peeker = new Peeker();
		setConnected(true);
	}

	protected void disconnectPort() throws Exception
	{
		gateway.getLogger().info("Closing: " + ipAddress + " @" + ipPort);
		synchronized (SYNC_Reader)
		{
			if (tc != null) tc.disconnect();
			tc = null;
			peeker.interrupt();
			peeker.join();
		}
		setConnected(false);
	}

	protected void clear() throws Exception
	{
		while (portHasData())
			read();
	}

	protected boolean portHasData() throws Exception
	{
		return (in.available() > 0);
	}

	public void write(char c) throws Exception
	{
		out.write((short) c);
		out.flush();
	}

	protected int read() throws Exception
	{
		return in.read();
	}

	private class Peeker extends Thread
	{
		public Peeker()
		{
			setPriority(MIN_PRIORITY);
			start();
			gateway.getLogger().debug("Peeker thread started.");
		}

		public void run()
		{
			while (true)
			{
				try
				{
					if (tc != null)
					{
						if (portHasData())
						{
							synchronized (SYNC_Reader)
							{
								dataReceived = true;
								SYNC_Reader.notifyAll();
							}
						}
					}
					sleep(500);
				}
				catch (InterruptedException e)
				{
					if (tc == null) break;
				}
				catch (Exception e)
				{
				}
			}
			gateway.getLogger().debug("Peeker thread ended.");
		}
	}
}