snmpSendRequest parameters

snmpSession: This input parameter is a pointer to the SNMP session that was created by the snmpBuildSession() function. This parameter is required.
pdu: This input parameter is a pointer to the BER-encoded PDU value that is to be sent to the agent. This parameter is required.
waitInterval: This input parameter specifies the number of seconds that this call waits to receive a return. If the response does not return within this specified time, this function returns an error code that specifies the timeout period. If this parameter's value is 0, this call waits until a response is received. This parameter's value must be non-negative.
decodedResponse: This output parameter is a pointer to the address of the decoded response PDU that is returned from the agent. The value might be NULL if the PDU is not received before the waitInterval period expires. This decoded PDU is used as input to several of the helper functions. This parameter is required.
receiveOnly: This input parameter specifies whether or not to try to retry receive the response PDU again if the first attempt timed out. The assumption is that the request has been successfully sent but that there is no response from the SNMP agent. This parameter can be set to 0 if your SNMP manager is sending a PDU, or it can be set to 1 if you want to try to receive a response again. If you specify a value of 1, a PDU is not sent to the target agent.