using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Net.Sockets;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        Socket mySocket;
        NetworkStream myStream;
        StreamReader myReader;
        StreamWriter myWriter;



        private void button1_Click(object sender, EventArgs e)
        {
            IPHostEntry myHostEntry;
            IPAddress myAddress;
            int myPort;
            EndPoint myEndPoint;


            button1.Enabled = false;

            mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            myPrint("ソケットを作成しました");

            //myHostEntry = Dns.GetHostEntry(textBox1.Text);
            //myAddress = myHostEntry.AddressList[0];
            myAddress = IPAddress.Parse("192.168.1.3");
            myPort = 55555;
            myEndPoint = new IPEndPoint(myAddress, myPort);
            mySocket.Connect(myEndPoint);
            myPrint("接続しました");

            myStream = new NetworkStream(mySocket);
            myReader = new StreamReader(myStream, Encoding.UTF8);
            myWriter = new StreamWriter(myStream, Encoding.UTF8);
            myWriter.AutoFlush = true;

            button2.Enabled = true;
            button3.Enabled = true;

            

            
        }
        private void button3_Click(object sender, EventArgs e)
        {
            string mySendData;
            string myRecvData;

            mySendData = textBox2.Text;
            textBox2.Clear();
            myWriter.WriteLine(mySendData);
            myPrint("送信<<" + mySendData);

            myRecvData = myReader.ReadLine();
            myPrint("受信>>" + myRecvData);


        }


        private void button2_Click(object sender, EventArgs e)
        {
            button2.Enabled = false;
            button3.Enabled = false;

            mySocket.Shutdown(SocketShutdown.Send);
            myPrint("サーバーへの送信をシャットダウン");

            if(mySocket.Poll(2000000, SelectMode.SelectRead))
                   myPrint("サーバーがシャットダウンを伝えてきました");
            else
                myPrint("サーバーが応答しないので終了します");

            myEndSession();
        }


        public void myEndSession()
        {
            mySocket.Close();
            myPrint("ソケットを閉じました");
            button1.Enabled = true;
            button2.Enabled = false;
            button3.Enabled = false;

        }


        public void myPrint(string str)
        {
            listBox1.Items.Add(str);
            listBox1.TopIndex = listBox1.Items.Count - 1;
            listBox1.Refresh();
        }


        

    }
}