/**
* Encodes a discovery pdu packet. This methods encodes without checking is the discovery
* paramters are all known.
*/
public byte[] encodeDiscoveryPacket(
byte msg_type, int rId, int errstat, int errind, Enumeration ve)
throws java.io.IOException, EncodingException {
String engineId = "";
TimeWindow tWindow = TimeWindow.getCurrent();
if (tWindow.isSnmpEngineIdKnown(hostAddr, hostPort) == true) {
engineId = tWindow.getSnmpEngineId(hostAddr, hostPort);
}
TimeWindowNode node = new TimeWindowNode(engineId, 0, 0);
return actualEncodePacket(msg_type, rId, errstat, errind, ve, node);
}
/**
* Encodes a pdu packet. If the stack is authoritative, the timeline details are retrieved from
* the usmAgent. If not, this methods first checks if all the discovery paramters are all known,
* if not it will throw an EncodingException. If so, it encodes and returns the bytes.
*/
public byte[] encodePacket(byte msg_type, int rId, int errstat, int errind, Enumeration ve)
throws java.io.IOException, EncodingException {
TimeWindowNode node;
if (isDestroyed == true) {
throw new EncodingException("Context can no longer be used, since it is already destroyed");
} else {
if (isAuthoritative(msg_type) == true) {
usmAgent.setSnmpContext(this);
node =
new TimeWindowNode(
usmAgent.getSnmpEngineId(),
usmAgent.getSnmpEngineBoots(),
usmAgent.getSnmpEngineTime());
} else {
TimeWindow tWindow = TimeWindow.getCurrent();
if (tWindow.isSnmpEngineIdKnown(hostAddr, hostPort) == false) {
throw new EncodingException(
"Engine ID of host "
+ hostAddr
+ ", port "
+ hostPort
+ " is unknown. Perform discovery.");
}
String engineId = tWindow.getSnmpEngineId(hostAddr, hostPort);
node = new TimeWindowNode(engineId, 0, 0);
if (isUseAuthentication()) {
if (tWindow.isTimeLineKnown(engineId) == true) {
node = tWindow.getTimeLine(engineId);
} else {
throw new EncodingException(
"Time Line of Engine ID of host "
+ hostAddr
+ ", port "
+ hostPort
+ " is unknown. "
+ "Perform discovery.");
}
}
}
}
return actualEncodePacket(msg_type, rId, errstat, errind, ve, node);
}