PowerSNMP for .NET
SnmpSocket Class
Members  Example 




Provides communications that can be invoked in parallel on multiple worker threads.
Object Model
SnmpSocket Class
Syntax
Public Class SnmpSocket 
   Inherits System.Net.Sockets.Socket
Dim instance As SnmpSocket
public class SnmpSocket : System.Net.Sockets.Socket 
public __gc class SnmpSocket : public System.Net.Sockets.Socket 
public ref class SnmpSocket : public System.Net.Sockets.Socket 
Remarks

Users will typically drag the Manager Component onto a form and use Start to instantiate communications using a single SnmpSocket instance. Socket resources are released when the thread exits.

Alternatively, the user can instantiate a Manager and SnmpSocket on any thread. In this case SnmpSocket.Close() should be used to release resources.

Example
The following example demonstrates sending an SNMPv1 Get request to an agent and receiving the response.
private void button1_Click(object sender, EventArgs e)
{
    //Create and send request on a worker thread
    manager1.Start(manager1_SendGetRequest, manager1.Mib.CreateVariable(NodeName.sysContact));
}

private void button2_Click(object sender, EventArgs e)
{
    //If you don't have the MIB, retrieve the value by IID:
    manager1.Start(manager1_SendGetRequest, new Variable("1.3.6.1.2.1.1.4.0"));
}

private void manager1_SendGetRequest(SnmpSocket managerSocket, object state)
{
    //Create Get Request
    GetMessage request = new GetMessage();
    request.Variables.Add(state as Variable);

    //Send request and get response
    ResponseMessage response = managerSocket.GetResponse(request, myAgentAddress);

    //Marshal response to the UI thread using the Message event
    manager1.Marshal(new ResponseMessage[] { response }, "", null);
}

private void manager1_Message(object sender, MessageEventArgs e)
{
    //Display info about the first variable in the response, and its value
    Variable vari = e.Messages[0].Variables[0];
    label1.Text += vari.Definition.ToString() + vari.Value.ToString() + "\r\n";
}
Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs)
    'Create and send request on a worker thread
    manager1.Start(AddressOf manager1_SendGetRequest, manager1.Mib.CreateVariable(NodeName.sysContact))
End Sub

Private Sub button2_Click(ByVal sender As Object, ByVal e As EventArgs)
    'If you don't have the MIB, retrieve the value by IID:
    manager1.Start(AddressOf manager1_SendGetRequest, New Variable("1.3.6.1.2.1.1.4.0"))
End Sub

Private Sub manager1_SendGetRequest(ByVal managerSocket As SnmpSocket, ByVal state As Object)
    'Create Get Request
    Dim request As New GetMessage()
    request.Variables.Add(TryCast(state, Variable))

    'Send request and get response
    Dim response As ResponseMessage = managerSocket.GetResponse(request, myAgentAddress)

    'Marshal response to the UI thread using the Message event
    manager1.Marshal(New ResponseMessage() { response }, "", Nothing)
End Sub

Private Sub manager1_Message(ByVal sender As Object, ByVal e As MessageEventArgs)
    'Display info about the first variable in the response, and its value
    Dim vari As Variable = e.Messages(0).Variables(0)
    label1.Text &= vari.Definition.ToString() & vari.Value.ToString() & vbCrLf
End Sub
Inheritance Hierarchy

System.Object
   System.Net.Sockets.Socket
      Dart.Snmp.SnmpSocket

See Also

Reference

SnmpSocket Members
Dart.Snmp Namespace


PowerSNMP for .NET Documentation Version 5.0
© 2021 Dart Communications. All Rights Reserved.
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