/// <summary>
/// Perform an SNMP Set.
/// </summary>
/// <param name="destination">The destination host.</param>
/// <param name="oid">The OID to set.</param>
/// <param name="value">The value to set.</param>
/// <returns>Nothing.</returns>
public static async Task SnmpSetAsync(IPAddress destination, string community, Oid oid, AsnType value)
{
UdpTarget target = new UdpTarget(destination);
// Create a SET PDU
Pdu pdu = new Pdu(EPduType.Set);
pdu.VbList.Add(oid, value);
// Set Agent security parameters
AgentParameters aparam = new AgentParameters(ESnmpVersion.Ver2, new OctetString(community));
// Response packet
SnmpV2Packet response;
try
{
// Send request and wait for response
response = await target.RequestAsync(pdu, aparam) as SnmpV2Packet;
}
catch (Exception ex)
{
// If exception happens, it will be returned here
Console.WriteLine(string.Format("Request failed with exception: {0}", ex.Message));
target.Close();
return;
}
// Make sure we received a response
if (response == null)
{
Console.WriteLine("Error in sending SNMP request.");
}
else
{
// Check if we received an SNMP error from the agent
if (response.Pdu.ErrorStatus != 0)
{
Console.WriteLine(string.Format("SNMP agent returned ErrorStatus {0} on index {1}", response.Pdu.ErrorStatus, response.Pdu.ErrorIndex));
}
else
{
// Everything is ok. Agent will return the new value for the OID we changed
Console.WriteLine(string.Format("Agent response {0}: {1}", response.Pdu[0].Oid.ToString(), response.Pdu[0].Value.ToString()));
}
}
}
void timer_Tick(object sender, EventArgs e)
{
AgentParameters param = new AgentParameters(SnmpVersion.Ver2, new OctetString(App.snmpCommunity));
param.DisableReplySourceCheck = !App.snmpCheckSrcFlag;
target = new UdpTarget((IPAddress)ip, App.snmpPort, App.snmpTimeout, App.snmpRetry);
Pdu pdu = new Pdu(PduType.Get);
for (int i = 0; i < requestOids.Length; i++)
{
pdu.VbList.Add(requestOids[i]);
}
try
{
target.RequestAsync(pdu, param, new SnmpAsyncResponse(SnmpAsyncResponseCallback));
}
catch (System.Exception ex)
{
TipMessage = "发送数据包异常";
}
}