snmpsharpnet的Trap实例

首先附上两个程序：

1：发送端程序Trapsend

  

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SnmpSharpNet;
namespace Trapsend
{
    class Program
    {
        static void Main(string[] args)
        {
            //while(true)
            Trap();
        }
        static void Trap()
        {   //trap发送测试
            TrapAgent agent = new TrapAgent();
 
            // Variable Binding collection to send with the trap
            // 可以发送各种类型的数据
            VbCollection col = new VbCollection();
            col.Add(new Oid("1.3.6.1.2.1.1.1.0"), new OctetString("Test string"));
            col.Add(new Oid("1.3.6.1.2.1.1.2.0"), new Oid("1.3.6.1.9.1.1.0"));
            col.Add(new Oid("1.3.6.1.2.1.1.3.0"), new TimeTicks(2324));
            col.Add(new Oid("1.3.6.1.2.1.1.4.0"), new OctetString("2016-1-2,17:53:2.0"));
 
            // Send the trap to the localhost port 162
            agent.SendV1Trap(new IpAddress("localhost"), 162, "public",
                             new Oid("1.3.6.1.2.1.1.1.0"), new IpAddress("127.0.0.1"),
                             SnmpConstants.LinkUp, 0, 13432, col);
        }
    }
}

2：接收端程序

using System;
using System.Net;
using System.Net.Sockets;
using SnmpSharpNet;
namespace traprecv
{
    class Program
    {
        static void Main(string[] args)
        {   // 接收的还是UDP类型的socket包
            // Construct a socket and bind it to the trap manager port 162             
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);  
            EndPoint ep = (EndPoint)ipep;
            socket.Bind(ep);        //绑定
            // Disable timeout processing. Just block until packet is received （超时处理）
            socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
            bool run = true;
            int inlen = -1; // 数据的长度
            while (run)
            {
                byte[] indata = new byte[16 * 1024];              // 收到的数据
                // 16KB receive buffer int inlen = 0;
                IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
                EndPoint inep = (EndPoint)peer;
                try
                {
                    inlen = socket.ReceiveFrom(indata, ref inep);  // 计算数据的长度
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Exception {0}", ex.Message);
                    inlen = -1;
                }
                if (inlen > 0)
                {
                    // Check protocol version int 
                    int ver = SnmpPacket.GetProtocolVersion(indata, inlen);// 计算收到的SNMP包的版本号
                    if (ver == (int)SnmpVersion.Ver1)                      // 版本1处理方式
                    {
                        // Parse SNMP Version 1 TRAP packet 
                        SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
                        pkt.decode(indata, inlen);                          // 解码，获得trap包的一些基本信息
                        Console.WriteLine("** SNMP Version 1 TRAP received from {0}:", inep.ToString());// agentIP
                        Console.WriteLine("*** Trap generic: {0}", pkt.Pdu.Generic);
                        Console.WriteLine("*** Trap specific: {0}", pkt.Pdu.Specific);
                        Console.WriteLine("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString());
                        Console.WriteLine("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString());
                        Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
                        Console.WriteLine("*** VarBind content:");
                        foreach (Vb v in pkt.Pdu.VbList)
                        {
                            Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
                        }
                        Console.WriteLine("** End of SNMP Version 1 TRAP data.");
                    }
                    else
                    {
                        // Parse SNMP Version 2 TRAP packet 
                        SnmpV2Packet pkt = new SnmpV2Packet();              // 版本2处理方式
                        pkt.decode(indata, inlen);
                        Console.WriteLine("** SNMP Version 2 TRAP received from {0}:", inep.ToString());
                        if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
                        {
                            Console.WriteLine("*** NOT an SNMPv2 trap ****");
                        }
                        else
                        {
                            Console.WriteLine("*** Community: {0}", pkt.Community.ToString());
                            Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
                            Console.WriteLine("*** VarBind content:");
                            foreach (Vb v in pkt.Pdu.VbList)
                            {
                                Console.WriteLine("**** {0} {1}: {2}",
                                   v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
                            }
                            Console.WriteLine("** End of SNMP Version 2 TRAP data.");
                        }
                    }
                }
                else
                {
                    if (inlen == 0)
                        Console.WriteLine("Zero length packet received.");
                }
            }
        }
    }
}

有了程序还是不够的，任然需要启动windows的SNMP服务

 开启SNMP服务：我的电脑》管理》服务》SNMP Service

A.添加区域，如图

B.添加陷阱，如图

最后附上最后的效果图：

2021-07--23 测试成功