我怎么知道RawCapture数据包的类型. [英] how can I know the type of RawCapture packet.

问题描述

我想知道RawCapture数据包的类型(如果是Tcp或UDP).
如何开始?

I would like to know the type of RawCapture packet (if it''s Tcp or UDP).
how can I start?

推荐答案

开始

Start here[^]; you can do the same for UDP.

如果允许使用第三方库，请尝试Winpcap库是执行此操作的最佳方法之一.


www.winpcap.org/ [ ^ ]

Hi,

if you are allowed to use a third party library try The Winpcap library is one of the best ways to do this.


www.winpcap.org/[^]

非常感谢.
我有解决方案:

Thank you so much.
I have got the solution:

EthernetPacket eth = EthernetPacket.ParsePacket(pack.LinkLayerType, pack.Data) as EthernetPacket;
if (eth != null)
{
    String macsrc = eth.SourceHwAddress.ToString();
    String macdest = eth.DestinationHwAddress.ToString();
    protocol = "Ethernet";
    IPv4Packet ipv4Packet = eth.PayloadPacket as IPv4Packet;
    if(ipv4Packet != null)
    {
        String ipsrc = ipv4Packet.SourceAddress.ToString();
        String ipdest = ipv4Packet.DestinationAddress.ToString();
                                
        //protocol += "-IPv4 ("+ipv4Packet .SourceAddress .ToString()+"->"+ipv4Packet .DestinationAddress .ToString ()+")";
        protocol +="_IPv4";
        UdpPacket udpPacket = ipv4Packet.PayloadPacket as UdpPacket;
        if (udpPacket != null)
        {
            String portSrcUdp = udpPacket.SourcePort.ToString();
            String portDestUdp = udpPacket.DestinationPort.ToString();
            protocol += "-UDP";

            this.AllPackets.Rows.Add(packetCount.ToString(), len.ToString(), timestr, protocol, macsrc, macdest, ipsrc, ipdest, portSrcUdp, portDestUdp);
            continue;
         }
         ...

效果很好:)

It works good :)

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