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45 lines
1.0 KiB
Java
45 lines
1.0 KiB
Java
4 years ago
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// UDPMessage.java (C) I. A. Robin, K. J. Turner 01/03/01
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package protocol;
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import support.*;
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public class UDPMessage extends PDU {
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// Class representing User Datagram Protocol Data Unit
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int sourcePort = -1;
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int destPort = -1;
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public UDPMessage(String type, int sp, int dp) {
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super(type);
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sourcePort = sp;
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destPort = dp;
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}
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public UDPMessage(String type, int sp, int dp, String sdu) {
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super(type, sdu);
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sourcePort = sp;
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destPort = dp;
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}
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public boolean matches(PDU pdu) {
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if (pdu == null) return false;
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UDPMessage ud = (UDPMessage)pdu;
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if (type.equals(ud.type) && source == ud.getSource()) {
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if (sourcePort == ud.sourcePort
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&& destPort == ud.destPort
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&& sdu.equals(ud.getSDU()))
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return true;
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}
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return false;
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}
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// returns label for arrow representing UDP PDU in a time sequence diagram
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public String getLabel() {
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return type + "(" + sourcePort + "," + destPort+ "," + sdu + ")";
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}
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}
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