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  • C#如何检测网络端口连接的状态

    C#如何检测/监控远程连接网络端口的情况(例如:3389端口是否处于监听状态,是否建立了连接等)。

    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Net.NetworkInformation;

    namespace test
    {
        class Program
        {


            static void Main(string[] args)
            {
                GetTcpConnections();
            }

            public static void GetTcpConnections()
            {
                IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
          
                TcpConnectionInformation[] connections = properties.GetActiveTcpConnections();
                foreach (TcpConnectionInformation t in connections)
                {
                    Console.Write("Local endpoint: {0} ", t.LocalEndPoint.ToString());
                    Console.Write("Remote endpoint: {0} ", t.RemoteEndPoint.ToString());
                    Console.WriteLine("{0}", t.State);
                }
                Console.WriteLine();
                Console.ReadLine();
            }


        }
    }

    运行结果:

    Local endpoint: 127.0.0.1:1025 Remote endpoint: 127.0.0.1:1026 Established
    Local endpoint: 127.0.0.1:1026 Remote endpoint: 127.0.0.1:1025 Established
    Local endpoint: 127.0.0.1:1028 Remote endpoint: 127.0.0.1:16992 CloseWait
    Local endpoint: 127.0.0.1:1110 Remote endpoint: 127.0.0.1:4900 Established
    Local endpoint: 127.0.0.1:2754 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:2762 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:2773 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:2913 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:3014 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:3531 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:4012 Remote endpoint: 127.0.0.1:1110 CloseWait
    Local endpoint: 127.0.0.1:4900 Remote endpoint: 127.0.0.1:1110 Established

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  • 原文地址:https://www.cnblogs.com/emanlee/p/2889612.html
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