cgl.narada.transport.util
Class TransportProbe

java.lang.Object
  cgl.narada.transport.util.TransportProbe

public class TransportProbe
extends Object

When NB program is running behind firewall or proxy server, the class can be used to probe the possibly allowed outward communication type. It probes for the connection possibility with various transport types at certain ports traditionally used in NB. It reporst the result on the console and then writes a configuration file which will be used by NB client to look for an ideal type of connection. The mechanism will work only when the remote host has acceptors running.

Field Summary

boolean	http80
boolean	http9045
boolean	multicast4045
boolean	ssl8045
boolean	tcp3045 Test results -- default to false.
boolean	tcp5045
boolean	udp3045
boolean	udp80

Constructor Summary

TransportProbe()

Method Summary

boolean	httpProbe(String host, int port)
String	localHost()
static void	main(String[] args)
boolean	multicastProbe(int port)
boolean	sslProbe(String host, int port, Properties prop)
boolean	tcpProbe(String host, int port) Test if a connection can be made to the remote host on certain port.
boolean	udpProbe(String host, int port)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

tcp3045

public boolean tcp3045

Test results -- default to false. Other than tcp80, all other tests will take the CGL lab machine as the remote host; tcp80 will connect to a well known website, for example, www.iub.edu.

tcp5045

public boolean tcp5045

udp3045

public boolean udp3045

multicast4045

public boolean multicast4045

ssl8045

public boolean ssl8045

http9045

public boolean http9045

http80

public boolean http80

udp80

public boolean udp80

Constructor Detail

TransportProbe

public TransportProbe()

Method Detail

tcpProbe

public boolean tcpProbe(String host,
                        int port)

Test if a connection can be made to the remote host on certain port.

Parameters:

port - is the destination port which can be connected to.

udpProbe

public boolean udpProbe(String host,
                        int port)
                 throws Exception

Throws:

Exception

multicastProbe

public boolean multicastProbe(int port)
                       throws Exception

Throws:

Exception

httpProbe

public boolean httpProbe(String host,
                         int port)

sslProbe

public boolean sslProbe(String host,
                        int port,
                        Properties prop)

localHost

public String localHost()

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception