/// <summary>Encode SNMP packet for sending.</summary>
/// <returns>BER encoded SNMP packet.</returns>
/// <exception cref="SnmpInvalidPduTypeException">
/// Thrown when PDU being encoded is not a valid SNMP version 1 PDU. Acceptable
/// protocol version 1 operations are GET, GET-NEXT, SET and RESPONSE.
/// </exception>
public override byte[] Encode()
{
if (
Pdu.Type != EPduType.Get &&
Pdu.Type != EPduType.GetNext &&
Pdu.Type != EPduType.Set &&
Pdu.Type != EPduType.Response)
{
throw new SnmpInvalidVersionException("Invalid SNMP PDU type while attempting to encode PDU: " + string.Format("0x{0:x2}", Pdu.Type));
}
if (Pdu.RequestId == 0)
{
Random rand = new Random((int)DateTime.Now.Ticks);
Pdu.RequestId = rand.Next();
}
MutableByte tmpBuffer = new MutableByte();
// snmp version
protocolVersion.Encode(tmpBuffer);
// community string
Community.Encode(tmpBuffer);
// pdu
Pdu.Encode(tmpBuffer);
MutableByte buf = new MutableByte();
// wrap the packet into a sequence
AsnType.BuildHeader(buf, SnmpConstants.SmiSequence, tmpBuffer.Length);
buf.Append(tmpBuffer);
return(buf);
}
