/**
* For SNMP Runtime internal use only. Constructor for creating new inform request. This object
* can be created only by an SNMP adaptor object.
*
* @param session <CODE>SnmpSession</CODE> object for this inform request.
* @param adp <CODE>SnmpAdaptorServer</CODE> object for this inform request.
* @param addr The <CODE>InetAddress</CODE> destination for this inform request.
* @param cs The community string to be used for the inform request.
* @param requestCB Callback interface for the inform request.
* @exception SnmpStatusException SNMP adaptor is not ONLINE or session is dead.
*/
SnmpInformRequest(
SnmpSession session,
SnmpAdaptorServer adp,
InetAddress addr,
String cs,
int p,
SnmpInformHandler requestCB)
throws SnmpStatusException {
informSession = session;
adaptor = adp;
address = addr;
communityString = cs;
port = p;
callback = requestCB;
informSession.addInformRequest(this); // add to adaptor queue.
setTimeout(adaptor.getTimeout());
}
boolean sendPdu() {
try {
responsePdu = null;
SnmpPduFactory pduFactory = adaptor.getPduFactory();
SnmpMessage msg =
(SnmpMessage)
pduFactory.encodeSnmpPdu(
(SnmpPduPacket) requestPdu, adaptor.getBufferSize().intValue());
if (msg == null) {
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
SNMP_ADAPTOR_LOGGER.logp(
Level.FINEST,
SnmpInformRequest.class.getName(),
"sendPdu",
"pdu factory returned a null value");
}
throw new SnmpStatusException(snmpReqUnknownError);
// This exception will caught hereafter and reported as an snmpReqUnknownError
// FIXME: may be it's not the best behaviour ?
}
int maxPktSize = adaptor.getBufferSize().intValue();
byte[] encoding = new byte[maxPktSize];
int encodingLength = msg.encodeMessage(encoding);
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
SNMP_ADAPTOR_LOGGER.logp(
Level.FINER,
SnmpInformRequest.class.getName(),
"sendPdu",
"Dump : \n" + msg.printMessage());
}
sendPduPacket(encoding, encodingLength);
return true;
} catch (SnmpTooBigException ar) {
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
SNMP_ADAPTOR_LOGGER.logp(
Level.FINEST,
SnmpInformRequest.class.getName(),
"sendPdu",
"Got unexpected exception",
ar);
}
setErrorStatusAndIndex(snmpReqPacketOverflow, ar.getVarBindCount());
requestPdu = null;
reason = ar.getMessage();
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
SNMP_ADAPTOR_LOGGER.logp(
Level.FINEST,
SnmpInformRequest.class.getName(),
"sendPdu",
"Packet Overflow while building inform request");
}
} catch (java.io.IOException ioe) {
setErrorStatusAndIndex(snmpReqSocketIOError, 0);
reason = ioe.getMessage();
} catch (Exception e) {
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
SNMP_ADAPTOR_LOGGER.logp(
Level.FINEST,
SnmpInformRequest.class.getName(),
"sendPdu",
"Got unexpected exception",
e);
}
setErrorStatusAndIndex(snmpReqUnknownError, 0);
reason = e.getMessage();
}
return false;
}
/**
* Gets the maximum number of tries before declaring that the manager is not responding.
*
* @return The maximum number of times an inform request should be tried.
*/
public final int getMaxTries() {
return adaptor.getMaxTries();
}
