com.act365.net.icmp
Class ICMPReader

java.lang.Object
  |
  +--com.act365.net.icmp.ICMPReader

public class ICMPReader

extends java.lang.Object

ICMPReader reads ICMPMessage objects from a DatagramPacket.

Constructor Summary

ICMPReader(short identifier)
Creates a reader to read from DatagramPacket objects.

Method Summary

ICMPMessage

read(byte[] buffer, int length, int offset, boolean testchecksum) read() constructs an ICMP message from a buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

ICMPReader

public ICMPReader(short identifier)

Creates a reader to read from DatagramPacket objects. The reader will only accept ICMP packets with the specified identifier.

Method Detail

read

public ICMPMessage read(byte[] buffer,
                        int length,
                        int offset,
                        boolean testchecksum)
                 throws java.io.IOException

read() constructs an ICMP message from a buffer. An exception will be thrown if the message is not in the ICMP format or if there is a checksum error but the message will simply be ignored should the identifier does not match.

Returns:

The ICMPMessage contained in the packet or null if the identifier did not match.