C # method for detecting whether a remote computer port is open

The example in this article describes how C # detects whether a remote computer port is open. Share to everyone for your reference. The specific analysis is as follows:

This C # code is used to detect whether port 3389 of the remote computer is processing open, and you can set other ports according to the actual needs

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 ();}}}  

The results of the operation are as follows:

Local endpoint:127.0.0.1:1025 remote endpoint:127.0.0.1:1026 establishedlocal endpoint:127.0.0.1:1026 remote Endpoint : 127.0.0.1:1025 establishedlocal endpoint:127.0.0.1:1028 Remote endpoint:127.0.0.1:16992 CloseWaitLocal endpoint: 127.0.0.1:1110 remote endpoint:127.0.0.1:4900 establishedlocal endpoint:127.0.0.1:2754 remote endpoint: 127.0.0.1:1110 closewaitlocal endpoint:127.0.0.1:2762 Remote endpoint:127.0.0.1:1110 closewaitlocal endpoint: 127.0.0.1:2773 remote endpoint:127.0.0.1:1110 closewaitlocal endpoint:127.0.0.1:2913 remote endpoint:127.0.0.1:1110 closewaitlocal endpoint:127.0.0.1:3014 remote endpoint:127.0.0.1:1110 closewaitlocal endpoint:127.0.0.1:3531 remote endpoint:127.0.0.1:1110 closewaitlocal endpoint:127.0.0.1:4012 Remote endpoint:127.0.0.1:1110 CloseWaitLocal endpoint:127.0.0.1:4900 Remote endpoint:127.0.0.1:1110 established

I hope this article is helpful to everyone's C # programming.

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C # method for detecting whether a remote computer port is open

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C # method for detecting whether a remote computer port is open