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我正在开发一个应用程序,它正在侦听 tcp 以获取来自其他设备的一些 xml 数据。我正在使用嗅探 c# 代码,我可以嗅探所有数据包。我的问题是,在每个数据包中,我都可以在每个数据包中找到一段数据。像这样:

1 packet from ip41 data:< 
2 packet from ip41 data:?xml versi 
3 packet from ip41 data:on="1.0" 
1 packet from ip35 data:< ?xml
4 packet from ip41 data:encoding="UTF-8 

真实数据如下所示:

<?xml version="1.0" encoding="UTF-8"?><alarm><datetime>2010-07-18T11:14:22Z</datetime><textch><textchid>020</textchid></textch><rule>DIR-020</rule><text>020-DIR-Intersection3_Magles_TCS6</text></alarm> 

我希望能够像真实数据一样获取字符串中的数据,而不是碎片。.net 中是否有可以做到这一点的方法或库?

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2 回答 2

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您是在嗅探,还是只想连接到设备并获取数据?如果是后者,您可以使用 TcpClient 类来做您需要的事情。

using System.Net.Sockets;

TcpClient tcp = new TcpClient(AddressFamily.InterNetwork);
tcp.Connect(IPAddress.Parse("192.168.0.1"), 12345);

然后tcp.GetStream()会给你一些你可以输入你选择的 XML 解析器的东西。

编辑:这是一个更详细的示例。

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using System.Net.Sockets;
using System.Threading;

namespace ConsoleApplication1 {

    class XMLBlaster {
        Thread myThread;

        public XMLBlaster() {
            myThread = new Thread(Start);
        }

        public void Begin() {
            myThread.Start();
        }

        //This will listen for a connection on port 12345, and send a tiny XML document
        //to the first person to connect.
        protected void Start() {
            TcpListener tcp = new TcpListener(IPAddress.Any, 12345);
            tcp.Start(1);

            TcpClient client = tcp.AcceptTcpClient();

            StreamWriter data = new StreamWriter(client.GetStream());

            data.Write("<myxmldocument><node1><node2></node2></node1></myxmldocument>");

            data.Close();
            client.Close();
        }
    }

    class Program {


        static void Main(string[] args) {

            //this sets up the server we will be reading
            XMLBlaster server = new XMLBlaster();
            server.Begin();


            //this is the important bit

            //First, create the client
            TcpClient tcp = new TcpClient(AddressFamily.InterNetwork);

            //Next, connect to the server. You probably will want to use the prober settings here
            tcp.Connect(IPAddress.Loopback, 12345);

            //Since byte manipulation is ugly, let's turn it into strings
            StreamReader data_in = new StreamReader(tcp.GetStream());

            //And, just read everything the server has to say
            Console.WriteLine(data_in.ReadToEnd());

            //when we're done, close up shop.
            data_in.Close();
            tcp.Close();

            //this is just to pause the console so you can see what's going on.
            Console.WriteLine("Press any key to continue...");
            Console.ReadKey(false);
        }
    }
}

请注意,这忽略了您需要遵循的任何协议的问题(例如,如果您通过 HTTP(端口 80)进行通信,则在获取数据之前与服务器通信涉及很多工作(并且,还有另一个类这样做正确;))

于 2010-07-28T08:07:45.440 回答
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我通过线程监视一个端口来做到这一点..并按序列号组装它们。感谢你的帮助

于 2010-08-25T10:30:01.507 回答