Unity Twitch chat on WEBGL

I got error Socketexception : Invalid handle on WEBGL it doesnt work on browser. Anyone can help me ? I am using unity 2017.1.0f3

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using System;
 using System.ComponentModel;
 using System.Net.Sockets;
 using System.IO;
 using UnityEngine.UI;
 
 public class TwitchChat : MonoBehaviour {
 
     private TcpClient twitchClient;
     private StreamReader reader;
     private StreamWriter writer;
 
     public string username, password, channelName; //Get the password from https://twitchapps.com/tmi
 
     public Text chatBox;
     public Rigidbody player;
     public int speed;
 
     void Start () {
         Connect();
     }
     
     void Update () {
         if (!twitchClient.Connected)
         {
             Connect();
         }
 
         ReadChat();
     }
 
     private void Connect()
     {
         twitchClient = new TcpClient("irc.chat.twitch.tv", 6667);
         reader = new StreamReader(twitchClient.GetStream());
         writer = new StreamWriter(twitchClient.GetStream());
 
         writer.WriteLine("PASS " + password);
         writer.WriteLine("NICK " + username);
         writer.WriteLine("USER " + username + " 8 * :" + username);
         writer.WriteLine("JOIN #" + channelName);
         writer.Flush();
     }
 
     private void ReadChat()
     {
         if(twitchClient.Available > 0)
         {
             var message = reader.ReadLine(); //Read in the current message
 
             if (message.Contains("PRIVMSG"))
             {
                 //Get the users name by splitting it from the string
                 var splitPoint = message.IndexOf("!", 1);
                 var chatName = message.Substring(0, splitPoint);
                 chatName = chatName.Substring(1);
 
                 //Get the users message by splitting it from the string
                 splitPoint = message.IndexOf(":", 1);
                 message = message.Substring(splitPoint + 1);
                 //print(String.Format("{0}: {1}", chatName, message));
                 chatBox.text = chatBox.text + "\n" + String.Format("{0}: {1}", chatName, message);
 
                 //Run the instructions to control the game!
                 GameInputs(message);
             }
         }
     }
 
     private void GameInputs(string ChatInputs)
     {
         if(ChatInputs.ToLower() == "left")
         {
             player.AddForce(Vector3.left * (speed * 1000));
         }
 
         if (ChatInputs.ToLower() == "right")
         {
             player.AddForce(Vector3.right * (speed * 1000));
         }
 
         if (ChatInputs.ToLower() == "forward")
         {
             player.AddForce(Vector3.forward * (speed * 1000));
         }
     }
 }