public ProbeRequest(SimpleFieldSet fs) throws MessageInvalidException {
/* If not defined in the field set Identifier will be null. As adding a null value to the field set does
* not actually add something under the key, it will also be omitted in the response messages.
*/
this.identifier = fs.get(IDENTIFIER);
try {
this.type = Type.valueOf(fs.get(TYPE));
// If HTL is not specified default to MAX_HTL.
this.htl = fs.get(HTL) == null ? Probe.MAX_HTL : fs.getByte(HTL);
if (this.htl < 0) {
throw new MessageInvalidException(
ProtocolErrorMessage.INVALID_MESSAGE, "hopsToLive cannot be negative.", null, false);
}
} catch (IllegalArgumentException e) {
throw new MessageInvalidException(
ProtocolErrorMessage.INVALID_MESSAGE,
"Unrecognized parse probe type \"" + fs.get(TYPE) + "\": " + e,
null,
false);
} catch (FSParseException e) {
// Getting a String from a SimpleFieldSet does not throw - it can at worst return null.
throw new MessageInvalidException(
ProtocolErrorMessage.INVALID_MESSAGE,
"Unable to parse hopsToLive \"" + fs.get(HTL) + "\": " + e,
null,
false);
}
}
