server/filter/FilterThread.java

import java.io.*;
import java.net.*;
import java.util.*;
import uk.ac.ukc.iscream.filter.*;

// Handle an incoming UDP packet as a separate thread.
public class FilterThread extends Thread{

    // Class constructor. Obtains the byte[] from a DatagramPacket.
    public FilterThread(Filter parent, DatagramPacket packet){
        this.parent = parent;
        this.rawPacket = packet.getData();
    }
    
    // Class constructor for passing XML Strings.
    public FilterThread(Filter parent, String xml){
        this.parent = parent;
        this.rawPacket = xml.getBytes();
    }
    
    public void run(){
 
        // Get a string without any null characters in it.
        String xml = new String(rawPacket);
        if (xml.indexOf(0) != -1) {
            xml = xml.substring(0, xml.indexOf(0));
        }
        else {
            xml = xml.substring(0, xml.length());
        }
        System.out.println(xml);

        // Use my XMLPacketMaker to make an XMLPacket object.
        XMLPacketMaker xmlPacketMaker = new XMLPacketMaker(xml);
        XMLPacket packet = xmlPacketMaker.createXMLPacket();
 
        if (packet == null){
            System.out.println("UDPReaderThread - A null XMLPacket was returned, I think I'll ignore it!");
            return;
        }
        System.out.println("UDPReaderThread - An XML Packet was read sucessfully: -");
        packet.printAll();
        // Now do something with this XMLPacket!!!
        // .... let's try this...
        parent.receiveXML(xml);
    
    }
    
    Filter parent;
    byte[] rawPacket;
}
Revision:	1.3
Committed:	Thu Nov 23 09:08:07 2000 UTC (23 years, 5 months ago) by pjm2
Branch:	MAIN
Changes since 1.2:	+11 -13 lines
Log Message:	Altered UDPReader and FilterThread so that the UDP packet data is now passed via the FilterThread's constructor.
#	User	Rev	Content
1	pjm2	1.1	import java.io.*;
2			import java.net.*;
3			import java.util.*;
4	tdb	1.2	import uk.ac.ukc.iscream.filter.*;
5	pjm2	1.1
6	pjm2	1.3	// Handle an incoming UDP packet as a separate thread.
7	tdb	1.2	public class FilterThread extends Thread{
8	pjm2	1.1
9	pjm2	1.3	// Class constructor. Obtains the byte[] from a DatagramPacket.
10			public FilterThread(Filter parent, DatagramPacket packet){
11	tdb	1.2	this.parent = parent;
12	pjm2	1.3	this.rawPacket = packet.getData();
13	pjm2	1.1	}
14
15	pjm2	1.3	// Class constructor for passing XML Strings.
16			public FilterThread(Filter parent, String xml){
17			this.parent = parent;
18			this.rawPacket = xml.getBytes();
19	pjm2	1.1	}
20
21			public void run(){
22
23			// Get a string without any null characters in it.
24			String xml = new String(rawPacket);
25	pjm2	1.3	if (xml.indexOf(0) != -1) {
26	tdb	1.2	xml = xml.substring(0, xml.indexOf(0));
27			}
28			else {
29			xml = xml.substring(0, xml.length());
30			}
31			System.out.println(xml);
32	pjm2	1.1
33	pjm2	1.3	// Use my XMLPacketMaker to make an XMLPacket object.
34	pjm2	1.1	XMLPacketMaker xmlPacketMaker = new XMLPacketMaker(xml);
35			XMLPacket packet = xmlPacketMaker.createXMLPacket();
36
37			if (packet == null){
38			System.out.println("UDPReaderThread - A null XMLPacket was returned, I think I'll ignore it!");
39			return;
40			}
41			System.out.println("UDPReaderThread - An XML Packet was read sucessfully: -");
42			packet.printAll();
43			// Now do something with this XMLPacket!!!
44	pjm2	1.3	// .... let's try this...
45	tdb	1.2	parent.receiveXML(xml);
46	pjm2	1.1
47			}
48
49	tdb	1.2	Filter parent;
50	pjm2	1.1	byte[] rawPacket;
51			}