Package uk.co.westhawk.snmp.beans

Class UsmDiscoveryBean

java.lang.Object

uk.co.westhawk.snmp.beans.UsmDiscoveryBean

public class UsmDiscoveryBean
extends Object

This bean performs the SNMPv3 USM discovery process.

The process consists of two steps: first the SNMP engine ID has to be discovered, second the timeline details of the SNMP engine ID have to be discovered. For the last step the username of the principal is needed.

See SNMP-USER-BASED-SM-MIB.

Version:

$Revision: 1.21 $ $Date: 2009/03/05 15:51:42 $

Author:

Birgit Arkesteijn

Constructor Summary

Constructors

Constructor	Description
UsmDiscoveryBean(String host, int port)	Constructor.
UsmDiscoveryBean(String host, int port, String bindAddr, String typeSocketA)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	freeResources()	Destroy the context in use.
void	setAuthenticationDetails(String newUserName, String newUserPassword, int protocol)	Sets the user's authentication details.
void	setPrivacyDetails(String newUserPassword, int protocol)	Sets the user's privacy details.
void	setRetryIntervals(int[] rinterval)	Sets the retry intervals of the PDU.
void	startDiscovery()	Starts the discovery.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

UsmDiscoveryBean

public UsmDiscoveryBean(String host,
 int port)
                 throws IOException

Constructor.

Parameters:

host - The host to discover

port - The port to discover

Throws:

IOException

See Also:

• SnmpContextv3(String, int)
• startDiscovery()

UsmDiscoveryBean

public UsmDiscoveryBean(String host,
 int port,
 String bindAddr,
 String typeSocketA)
                 throws IOException

Constructor.

Parameters:

host - The host to discover

port - The port to discover

bindAddr - The local address the server will bind to

typeSocketA - The type of socket to use.

Throws:

IOException

See Also:

• SnmpContextv3(String, int, String, String)
• startDiscovery()

Method Details

setAuthenticationDetails

public void setAuthenticationDetails(String newUserName,
 String newUserPassword,
 int protocol)

Sets the user's authentication details. With these details the time line details will be retrieved. If the user details are not set, only the engine ID will be discovered.

The time line details only need to be known when the user want to send authenticated message to this SNMP engine.

Parameters:

newUserName - The user name

newUserPassword - The user authentication password

protocol - The user authentication protocol

See Also:

• SnmpContextv3Basis.setUserName(String)
• SnmpContextv3Basis.setUserAuthenticationPassword(String)
• SnmpContextv3Basis.setAuthenticationProtocol(int)

setPrivacyDetails

public void setPrivacyDetails(String newUserPassword,
 int protocol)

Sets the user's privacy details. With these details the time line details will be retrieved if needed.

The time line details only need to be known when the user want to send authenticated message to this SNMP engine.

Parameters:

newUserPassword - The user privacy password

See Also:

• SnmpContextv3Basis.setUserPrivacyPassword(String)

setRetryIntervals

public void setRetryIntervals(int[] rinterval)

Sets the retry intervals of the PDU. The length of the array corresponds with the number of retries. Each entry in the array is the number of milliseconds of each try.

If used, please set before sending!

The default is {500, 1000, 2000, 5000, 5000}. It is good practice to make the interval bigger with each retry, if the numbers are the same the chance of collision is higher.

Parameters:

rinterval - The interval in msec of each retry

See Also:

• Pdu.setRetryIntervals(int[])

startDiscovery

public void startDiscovery()
                    throws PduException,
IOException

Starts the discovery. This method will send a Pdu to discover the SNMP engine ID. Set the user details before calling this method, if you want the time line details to be discovered as well.

This is a blocking call! It will return when it has done the whole discovery.

Throws:

PduException

IOException

See Also:

• setAuthenticationDetails(String, String, int)
• discoveryEngineId()
• discoveryTimeLine()

freeResources

public void freeResources()

Destroy the context in use.