WPF_Practice/PacticeSolution/TelnetCommunicator/Telnet/OneTimeTelnetSender.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace TelnetCommunicator.Telnet
{
    public class OneTimeTelnetSender
    {
        private AsyncSocketTelnetClient _client;
        private string _ip;
        private int _port;

        private EventHandler<string> _messageCallback;

        public OneTimeTelnetSender(string ip, int port = 23, EventHandler<string> messageCallback = null) 
        {
            _ip = ip;
            _port = port;

            _client = new AsyncSocketTelnetClient();
            _messageCallback = messageCallback;
            _client.MessageCallback -= _messageCallback;
            _client.MessageCallback += _messageCallback;
        }

        public async void Send(string message) 
        {
            try
            {
                await _client.Connect(_ip, _port, TelnetMode.Once);
                await _client.SendMessage(message);
            }
            catch (Exception ex)
            {
                if (_messageCallback != null)
                    _messageCallback(this, ex.Message);

            }
        }
    }
}