networkdiagnostics.java

jtapi for telephone

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package net.sourceforge.gjtapi.raw.sipprovider.common;

import net.java.stun4j.*;
import net.java.stun4j.client.*;
import java.net.InetAddress;

/**
 * The class is used to detect and output the type of the firewall and/or NAT
 * that the running host is behind (if any). It is only used for debugging
 * currently but in the future would help optimise network behavior.
 *
 * <p>Organisation: Network Research Team (LSIIT @ ULP)</p>
 * @author Emil Ivov
 * @version 0.1
 */
class NetworkDiagnostics  extends Thread
{
    private Console console = Console.getConsole(NetworkDiagnostics.class);

    public NetworkDiagnostics()
    {
        setName("NetworkDiagnosticsThread");
    }

    public void run()
    {
        try
        {
            StunAddress localAddr = null;
            StunAddress serverAddr = null;
            localAddr = new StunAddress(InetAddress.getLocalHost(), 5678);
            serverAddr = new StunAddress("stun01bak.sipphone.com.", 3479);
            NetworkConfigurationDiscoveryProcess addressDiscovery =
                new NetworkConfigurationDiscoveryProcess(localAddr, serverAddr);
            addressDiscovery.start();
            StunDiscoveryReport report = addressDiscovery.determineAddress();
            if(console.isDebugEnabled())
            	console.debug("Result of NetworkDiagnosticts:\n"+report);
        }
        catch(Throwable exc)
        //catch everything
		//this is a diagnostic kit only so we don't want it
        //to spoil our actual application
        {
			console.error("The network diagnostics process has failed with "
                          +"the following exception", exc);
        }
    }

}