SnmpServlet Class Reference

SNMP agent servlet that listens for and processes SNMP requests. More...

#include <snmp.h>

Inherits servlet.

Public Member Functions
	SnmpServlet (int port=161)
	Construct an SnmpServlet and bind to the specified UDP port.

Protected Member Functions
virtual int	AddToSelectSet (fd_set &rd_set, fd_set &wr_set, fd_set &er_set)
	Register the SNMP socket with the select read set.
virtual void	ProcessSelectResult (fd_set &rd_set, fd_set &wr_set, fd_set &er_set)
	Process incoming SNMP requests when the socket is readable.

Protected Attributes
int	m_fd
	UDP socket file descriptor for SNMP communication.
int	m_port
	UDP port number the SNMP agent listens on.

Detailed Description

SNMP agent servlet that listens for and processes SNMP requests.

SnmpServlet integrates the SNMP agent into the system servlet select loop. It creates a UDP socket bound to the specified port (default 161) and handles incoming SNMP GET, GET-NEXT, and SET requests.

To enable SNMP in your application, create a global instance of this class. The servlet automatically registers itself with the system select loop.

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Expand for Example Usage

Examples

Creating an SNMP Agent on the Default Port

#include <snmp.h>
 
const char *SYSDESC = "My SNMP Device";
const char *SYSOID = "1.3.6.1.4.1.8174.2.40";
 
// Create SNMP servlet on default port 161
SnmpServlet TheSnmpServer;

Creating an SNMP Agent on a Custom Port

// Create SNMP servlet on a non-standard port
SnmpServlet TheSnmpServer(10161);

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Constructor & Destructor Documentation

SnmpServlet()

SnmpServlet::SnmpServlet

(

int

port = 161

)

Construct an SnmpServlet and bind to the specified UDP port.

Creates a UDP socket and registers the servlet with the system select loop to begin processing SNMP requests.

Parameters

port	The UDP port to listen on (default: 161, the standard SNMP port).

Member Function Documentation

AddToSelectSet()

virtual int SnmpServlet::AddToSelectSet ( fd_set & rd_set, fd_set & wr_set, fd_set & er_set )

protectedvirtual

Register the SNMP socket with the select read set.

Parameters

rd_set	Read file descriptor set.
wr_set	Write file descriptor set.
er_set	Error file descriptor set.

Returns

Timeout value in seconds.

ProcessSelectResult()

virtual void SnmpServlet::ProcessSelectResult ( fd_set & rd_set, fd_set & wr_set, fd_set & er_set )

protectedvirtual

Process incoming SNMP requests when the socket is readable.

Parameters

rd_set	Read file descriptor set.
wr_set	Write file descriptor set.
er_set	Error file descriptor set.

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The documentation for this class was generated from the following file:

• snmp.h