ActiveSocket Toolkit Add network capabilities to any Windows or .NET application

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Visual Basic 5.x/6.x SNMP Receive Trap Source Code

ActiveSocket provides an easy-to-use development interface to a variety of IP protocols. By using ActiveSocket, you can very easily create or enhance applications with network features.

ActiveSocket features the following: DNS, FTP, HTTP, HTTPs, ICMP Ping, IP-to-Country, MSN, NTP, RSH, SCP, SFTP, SNMP v1/v2c (Get, GetNext, Set), SNMP Traps, SNMP MIB, SSH, TCP, Telnet, TFTP, UDP, Telnet, Wake-On-LAN and more.

ActiveSocket SNMP traps can be well integrated into Visual Basic 5.x/6.x environments. This document describes how ActiveSocket SNMP traps can be integrated into Visual Basic 5.x/6.x projects.

ActiveSocket is compliant with SNMP v1 and SNMP v2c. Several SNMP data types are supported, including:

  • String types (also called "octet strings");
  • Integer types (16bit, 32bit, 64bit and unsigned integers);
  • IP Address types;
  • Timetick types;
  • Counter types (32bit and 64bit counters);
  • OID types (also called "Object ID's");
  • Other, less frequently used datatypes.

ActiveSocket SNMP traps features:

  • SNMP v1 and SNMP v2c support
    • ;
  • Support for aplphanumeric OID's (object identifier) and numeric OID's;
  • Multi-threading architecture: send SNMP traps simultaneously from one process using multiple threads;
  • Support for ports other than the default 161 and 162 ports;
  • Support for enterprise specific traps;
  • Support for SNMP v1 generic traps;
  • Send multiple variables in a single SNMP TRAP message.

Prerequisites

IMPORTANT: Make sure that the SNMP Service is installed and running on the machine where ActiveSocket is installed. For more details, please read FAQ items Q1200010 and Q1200015.

Step 1: Download and install the ActiveSocket Toolkit

Download the ActiveSocket Toolkit from the ActiveXperts Download Site and start the installation. The installation guides you through the installation process.

Step 2: Create a new Visual Basic project

Launch 'Microsoft Visual Basic' from the Start menu, and choose 'New' from the 'File Menu'. The 'New Project' dialog appears. Select 'Standard Exe' and click 'OK':

Visual Basic

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Step 3: Refer to the ActiveSocket Library and create the objects

A new Project is created, with a blank form.

First, you must add a reference to ActiveSocket in the project to be able to use the object. To do so, choose 'References...' from the 'Project' menu. In the 'References' dialog that pops up, enable the 'ActiveSocket 2.4 Type Library' reference as shown in the following picture:

Visual Basic

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Click 'OK' to close the 'References...' dialog.

Then, select the Project form and choose 'View Code' from the context menu:

Visual Basic

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On top of your code, declare the following object:

Public objSnmpTrapManager As ASOCKETLib.SnmpTrapManager

Step 4: Create the object

From the Code window, select 'Form'. The Private Sub 'Form_Load()' will be displayed now. In the 'Form Load' function, create the object in the following way: 

Set objSnmpTrapManager = CreateObject("ActiveXperts.SnmpTrapManager")