/**
* Execute Script Loads environment and saves result
*
* @return null or Exception
*/
public Exception execute() {
m_result = null;
if (m_variable == null
|| m_variable.length() == 0
|| m_script == null
|| m_script.length() == 0) {
IllegalArgumentException e = new IllegalArgumentException("No variable/script");
log.config(e.toString());
return e;
}
Interpreter i = new Interpreter();
loadEnvironment(i);
try {
log.config(m_script);
i.eval(m_script);
} catch (Exception e) {
log.config(e.toString());
return e;
}
try {
m_result = i.get(m_variable);
log.config("Result (" + m_result.getClass().getName() + ") " + m_result);
} catch (Exception e) {
log.config("Result - " + e);
if (e instanceof NullPointerException)
e = new IllegalArgumentException("Result Variable not found - " + m_variable);
return e;
}
return null;
} // execute
/**
* Sends a specific <tt>Request</tt> to the STUN server associated with this
* <tt>StunCandidateHarvest</tt>.
*
* @param request the <tt>Request</tt> to send to the STUN server associated with this
* <tt>StunCandidateHarvest</tt>
* @param firstRequest <tt>true</tt> if the specified <tt>request</tt> should be sent as the first
* request in the terms of STUN; otherwise, <tt>false</tt>
* @return the <tt>TransactionID</tt> of the STUN client transaction through which the specified
* <tt>Request</tt> has been sent to the STUN server associated with this
* <tt>StunCandidateHarvest</tt>
* @param transactionID the <tt>TransactionID</tt> of <tt>request</tt> because <tt>request</tt>
* only has it as a <tt>byte</tt> array and <tt>TransactionID</tt> is required for the
* <tt>applicationData</tt> property value
* @throws StunException if anything goes wrong while sending the specified <tt>Request</tt> to
* the STUN server associated with this <tt>StunCandidateHarvest</tt>
*/
protected TransactionID sendRequest(
Request request, boolean firstRequest, TransactionID transactionID) throws StunException {
if (!firstRequest && (longTermCredentialSession != null))
longTermCredentialSession.addAttributes(request);
StunStack stunStack = harvester.getStunStack();
TransportAddress stunServer = harvester.stunServer;
TransportAddress hostCandidateTransportAddress = hostCandidate.getTransportAddress();
if (transactionID == null) {
byte[] transactionIDAsBytes = request.getTransactionID();
transactionID =
(transactionIDAsBytes == null)
? TransactionID.createNewTransactionID()
: TransactionID.createTransactionID(harvester.getStunStack(), transactionIDAsBytes);
}
synchronized (requests) {
try {
transactionID =
stunStack.sendRequest(
request, stunServer, hostCandidateTransportAddress, this, transactionID);
} catch (IllegalArgumentException iaex) {
if (logger.isLoggable(Level.INFO)) {
logger.log(
Level.INFO,
"Failed to send "
+ request
+ " through "
+ hostCandidateTransportAddress
+ " to "
+ stunServer,
iaex);
}
throw new StunException(StunException.ILLEGAL_ARGUMENT, iaex.getMessage(), iaex);
} catch (IOException ioex) {
if (logger.isLoggable(Level.INFO)) {
logger.log(
Level.INFO,
"Failed to send "
+ request
+ " through "
+ hostCandidateTransportAddress
+ " to "
+ stunServer,
ioex);
}
throw new StunException(StunException.NETWORK_ERROR, ioex.getMessage(), ioex);
}
requests.put(transactionID, request);
}
return transactionID;
}