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package com.sun.jmx.snmp;


import java.io.Serializable;
import java.net.InetAddress;
Is the fully decoded representation of an SNMP packet.

Classes are derived from SnmpPdu to represent the different forms of SNMP packets (SnmpPduPacket, SnmpScopedPduPacket) 
The SnmpPdu class defines the attributes
common to every form of SNMP packets.
This API is a Sun Microsystems internal API  and is subject
to change without notice.
See Also:
SnmpMessage
SnmpPduFactory
Since:
1.5/**
 * Is the fully decoded representation of an SNMP packet.
 * <P>
 * Classes are derived from <CODE>SnmpPdu</CODE> to
 * represent the different forms of SNMP packets
 * ({@link com.sun.jmx.snmp.SnmpPduPacket SnmpPduPacket},
 * {@link com.sun.jmx.snmp.SnmpScopedPduPacket SnmpScopedPduPacket})
 * <BR>The <CODE>SnmpPdu</CODE> class defines the attributes
 * common to every form of SNMP packets.
 *
 *
 * <p><b>This API is a Sun Microsystems internal API  and is subject
 * to change without notice.</b></p>
 * @see SnmpMessage
 * @see SnmpPduFactory
 *
 * @since 1.5
 */
public abstract class SnmpPdu implements SnmpDefinitions, Serializable {

    
PDU type. Types are defined in SnmpDefinitions. 
@serial
/**
     * PDU type. Types are defined in
     * {@link com.sun.jmx.snmp.SnmpDefinitions SnmpDefinitions}.
     * @serial
     */
    public int type=0 ;

    
Protocol version. Versions are defined in SnmpDefinitions. 
@serial
/**
     * Protocol version. Versions are defined in
     * {@link com.sun.jmx.snmp.SnmpDefinitions SnmpDefinitions}.
     * @serial
     */
    public int version=0 ;

    
List of variables.
@serial
/**
     * List of variables.
     * @serial
     */
    public SnmpVarBind[] varBindList ;


    
Request identifier.
Note that this field is not used by SnmpPduTrap.
@serial
/**
     * Request identifier.
     * Note that this field is not used by <CODE>SnmpPduTrap</CODE>.
     * @serial
     */
    public int requestId=0 ;

    
Source or destination address.
For an incoming PDU it's the source.

For an outgoing PDU it's the destination.
@serial
/**
     * Source or destination address.
     * <P>For an incoming PDU it's the source.
     * <BR>For an outgoing PDU it's the destination.
     * @serial
     */
    public InetAddress address ;

    
Source or destination port.
For an incoming PDU it's the source.

For an outgoing PDU it's the destination.
@serial
/**
     * Source or destination port.
     * <P>For an incoming PDU it's the source.
     * <BR>For an outgoing PDU it's the destination.
     * @serial
     */
    public int port=0 ;

    
Returns the String representation of a PDU type.
For instance, if the PDU type is SnmpDefinitions.pduGetRequestPdu,
the method will return "SnmpGet".
Params:
cmd – The integer representation of the PDU type.
Returns:
The String representation of the PDU type./**
     * Returns the <CODE>String</CODE> representation of a PDU type.
     * For instance, if the PDU type is <CODE>SnmpDefinitions.pduGetRequestPdu</CODE>,
     * the method will return "SnmpGet".
     * @param cmd The integer representation of the PDU type.
     * @return The <CODE>String</CODE> representation of the PDU type.
     */
    public static String pduTypeToString(int cmd) {
        switch (cmd) {
        case pduGetRequestPdu :
            return "SnmpGet" ;
        case pduGetNextRequestPdu :
            return "SnmpGetNext" ;
        case pduWalkRequest :
            return "SnmpWalk(*)" ;
        case pduSetRequestPdu :
            return "SnmpSet" ;
        case pduGetResponsePdu :
            return "SnmpResponse" ;
        case pduV1TrapPdu :
            return "SnmpV1Trap" ;
        case pduV2TrapPdu :
            return "SnmpV2Trap" ;
        case pduGetBulkRequestPdu :
            return "SnmpGetBulk" ;
        case pduInformRequestPdu :
            return "SnmpInform" ;
        }
        return "Unknown Command = " + cmd ;
    }
}