KM.Snmp

This library is meant to work on top of KM.Lextm.SharpSnmp (a fork of Lextm.SharpSnmp) which easily allows you to do SNMP commands get/set/getbulk/getsubree.

In order to create an instance of CustomSnmp to make these calls, you will need to pass it an ISnmpLog and an ILogger.

The purpose of the ISnmpLog is to log each SNMP transaction however you choose. There are two example projects, one for regular legacy framework or .Net Core without dependency injection called Test and the other to show how to work with dependency injection in .Net Core called DependencyInjectionTest.

An ISnmpLog will need to contain a function with the following signature:

Task LogTransactionAsync(DateTime startDate, string ip, string oid, string communityString, string snmpType, string snmpVersion, string returnType, string returnData);

Simple SNMPv2 Get Example:

Variable result = await CustomSnmp.GetV2Async(ip, oid, communityString, retries, port, timeout);
if(result is null)
{
    throw new Exception("Snmp Failed");
}

SnmpType type = result.Data.TypeCode;
ISnmpData data = result.Data;
if(type != SnmpType.OctetString)
{
    throw new Exception("Snmp Failed");
}

return data.ToString();

Simple SNMPv3 TSM Over DTLS Example:

Variable result = await _CustomSnmp.GetV3TsmAsync(ip, oid, retries, port, timeout, x509Certificate, connectionTimeout);
if(result is null)
{
    throw new Exception("Snmp Failed");
}

SnmpType type = result.Data.TypeCode;
ISnmpData data = result.Data;
if(type != SnmpType.OctetString)
{
    throw new Exception("Snmp Failed");
}

return data.ToString();

Please note that SNMPv3 USM has not been tested.
Simple SNMPv3 USM Example:

Variable result = await _CustomSnmp.GetV3UsmAsync(ip, oid, communityString, retries, port, timeout, authPassword, privacyPassword);
if(result is null)
{
    throw new Exception("Snmp Failed");
}

SnmpType type = result.Data.TypeCode;
ISnmpData data = result.Data;
if(type != SnmpType.OctetString)
{
    throw new Exception("Snmp Failed");
}

return data.ToString();

More examples can be found in the test projects