如何检查服务器是否正在接受连接

Question

我只想检查smpp服务器是否接受连接。我们可以使用命令提示符使用以下命令检查它：telnet 152.26.53.39 2775我只想在C＃中编写此命令

Answer 1

TcpClient tcpClient = new TcpClient();
      try
           {
                tcpClient.Connect("152.26.53.39", 2775);
                Console.WriteLine("Port 2775 Open");
            }
      catch (Exception){

               Console.WriteLine("Port 2775 Closed");
       }

Answer 2

您可以使用Ping class，如下所示：

string nameOrAddress="152.26.53.39 2775";
public static bool PingHost(string nameOrAddress)
{
    bool pingable = false;
    Ping pinger = new Ping();

    try
    {
        PingReply reply = pinger.Send(nameOrAddress);

        pingable = reply.Status == IPStatus.Success;
    }
    catch (PingException)
    {
        // Discard PingExceptions and return false;
    }

    return pingable;
}