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

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Visual C++ SNMP MIB Browser

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.

SNMP MIB Browsing can be well integrated into ASP environments. This document describes how ActiveSocket's SNMP MIB Browser can be integrated into ASP projects.

A management information base (MIB) is a database used to manage the devices in a communications network. The database is hierarchical (tree-structured) and entries are addressed through object identifiers (OID's). A MIB should contain information on these commands and on the target objects (controllable entities or potential sources of status information) with a view to tuning the network transport to the current needs. Each type of object in a MIB database has a name, a syntax, and an encoding. The name is represented uniquely as an OID. An OID is an administratively assigned name. The administrative policies used for assigning names are discussed later in this memo.

Use ActiveSocket's 'SnmpMibBrowser' object to load a MIB database into memory and iterate over all objects and view all properties.

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 C++ project

Launch 'Microsoft Visual C++' from the Start menu, and choose 'New' from the 'File Menu'. The 'New' dialog appears.

Select the type of project (for instance: 'Win32 Console Application'), enter a 'Project name' and select the 'Location':

Visual C

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Select the kind of project, for instance a 'Hello, world!' application and click 'Finish':

Visual C

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

A new Project is created now.

Before you can use ActiveSocket, you need to refer to the ActiveSocket library. The actually reference files are shipped with the product and are located in the following directory: 

C:\Program Files\ActiveXperts\ActiveSocket\Examples\Visual C++\Include

Copy all files in the above directory ('ASocket.h', 'ASocket_i.c' and 'ASocketConstants.h') to your project directory.

On top of your code, declare the following object:

ISnmpMibBrowser  *pSnmpMib = NULL;

Step 4: Create the objects

Since the ActiveSocket Toolkit is a COM object, you must initialize the COM library before they can call COM library functions (e.g. ActiveSocket functions):

CoInitialize(NULL);

Create the object in the following way:

CoCreateInstance(CLSID_SnmpMibBrowser, NULL, CLSCTX_INPROC_SERVER, IID_ISnmpMibBrowser, (void**) &pSnmpMibBrowser );

You can download the complete sample on our ftp site ftp.activexperts-labs.com/samples/network-component. There are many other working ActiveSocket scripts on our site and shipped with the product.