/** Fetch the ICMP data as a byte array. */
public byte[] getICMPData() {
if (_icmpDataBytes == null) {
// set data length based on info in headers (note: tcpdump
// can return extra junk bytes which bubble up to here
int dataLen = _bytes.length - _ipOffset - ICMP_HEADER_LEN;
_icmpDataBytes = PacketEncoding.extractData(_ipOffset, ICMP_HEADER_LEN, _bytes, dataLen);
}
return _icmpDataBytes;
}
/** Fetch the ICMP header a byte array. */
public byte[] getICMPHeader() {
if (_icmpHeaderBytes == null) {
_icmpHeaderBytes = PacketEncoding.extractHeader(_ipOffset, ICMP_HEADER_LEN, _bytes);
}
return _icmpHeaderBytes;
}
