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サーバークライアントは単純なテキストを送受信します

サーバーとクライアント間で単純な文字列を送受信するアプリケーションを構築するための宿題があります。接続を確立する方法は知っていますが、文字列を送受信する方法はわかりません。これは私のコードです:

public partial class Form1 : Form
{
    private Thread n_server;
    private Thread n_client;
    private Thread n_send_server;
    private TcpClient client;
    private TcpListener listener;
    private int port = 2222;
    private string IP = " ";
    private Socket socket;
    public Form1()
    {
        InitializeComponent();
    }

    private void exitToolStripMenuItem_Click(object sender, EventArgs e)
    {
        Application.Exit();
    }

    public void Server()
    {
        listener = new TcpListener(IPAddress.Any, port);
        listener.Start();
        try
        {
            socket = listener.AcceptSocket();
            if (socket.Connected)
            {
                textBox2.Invoke((MethodInvoker)delegate { textBox2.Text = "Client : " + socket.RemoteEndPoint.ToString(); });
            }
        }
        catch
        {
        }
    }

    public void Client()
    {
        IP = "localhost";
        client = new TcpClient();
        try
        {
            client.Connect(IP, port);
        }

        catch (Exception ex)
        {
            MessageBox.Show("Error : " + ex.Message);
        }

        if (client.Connected)
        {
            textBox3.Invoke((MethodInvoker)delegate { textBox3.Text = "Connected..."; });

        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        n_server = new Thread(new ThreadStart(Server)); 
        n_server.IsBackground = true;
        n_server.Start();
        textBox1.Text = "Server up";
    }

    private void button2_Click(object sender, EventArgs e)
    {
        n_client = new Thread(new ThreadStart(Client));
        n_client.IsBackground = true;
        n_client.Start();
    }

    private void send()
    {
        // I want to use this method for both buttons : "send button" on server side    and "send button"
        // on client side. First I read text from textbox2 on server side or textbox3
        // on client side than accept and write the string to label2(s) or label3(c).
        // 
    }


    private void button3_Click(object sender, EventArgs e)
    {
        n_send_server = new Thread(new ThreadStart(send));
        n_send_server.IsBackground = true;
        n_send_server.Start();
    }
}
33
Iposify

次のコードは、サーバーとの間で現在の日時を送受信します

//次のコードはサーバーアプリケーション用です。

namespace Server
{
    class Program
    {
        const int PORT_NO = 5000;
        const string SERVER_IP = "127.0.0.1";

        static void Main(string[] args)
        {
            //---listen at the specified IP and port no.---
            IPAddress localAdd = IPAddress.Parse(SERVER_IP);
            TcpListener listener = new TcpListener(localAdd, PORT_NO);
            Console.WriteLine("Listening...");
            listener.Start();

            //---incoming client connected---
            TcpClient client = listener.AcceptTcpClient();

            //---get the incoming data through a network stream---
            NetworkStream nwStream = client.GetStream();
            byte[] buffer = new byte[client.ReceiveBufferSize];

            //---read incoming stream---
            int bytesRead = nwStream.Read(buffer, 0, client.ReceiveBufferSize);

            //---convert the data received into a string---
            string dataReceived = Encoding.ASCII.GetString(buffer, 0, bytesRead);
            Console.WriteLine("Received : " + dataReceived);

            //---write back the text to the client---
            Console.WriteLine("Sending back : " + dataReceived);
            nwStream.Write(buffer, 0, bytesRead);
            client.Close();
            listener.Stop();
            Console.ReadLine();
        }
    }
}

//これはクライアントのコードです

namespace Client
{
    class Program
    {
        const int PORT_NO = 5000;
        const string SERVER_IP = "127.0.0.1";
        static void Main(string[] args)
        {
            //---data to send to the server---
            string textToSend = DateTime.Now.ToString();

            //---create a TCPClient object at the IP and port no.---
            TcpClient client = new TcpClient(SERVER_IP, PORT_NO);
            NetworkStream nwStream = client.GetStream();
            byte[] bytesToSend = ASCIIEncoding.ASCII.GetBytes(textToSend);

            //---send the text---
            Console.WriteLine("Sending : " + textToSend);
            nwStream.Write(bytesToSend, 0, bytesToSend.Length);

            //---read back the text---
            byte[] bytesToRead = new byte[client.ReceiveBufferSize];
            int bytesRead = nwStream.Read(bytesToRead, 0, client.ReceiveBufferSize);
            Console.WriteLine("Received : " + Encoding.ASCII.GetString(bytesToRead, 0, bytesRead));
            Console.ReadLine();
            client.Close();
        }
    }
}
81
Nudier Mena
    static void Main(string[] args)
    {
        //---listen at the specified IP and port no.---
        IPAddress localAdd = IPAddress.Parse(SERVER_IP);
        TcpListener listener = new TcpListener(localAdd, PORT_NO);
        Console.WriteLine("Listening...");
        listener.Start();
        while (true)
        {
            //---incoming client connected---
            TcpClient client = listener.AcceptTcpClient();

            //---get the incoming data through a network stream---
            NetworkStream nwStream = client.GetStream();
            byte[] buffer = new byte[client.ReceiveBufferSize];

            //---read incoming stream---
            int bytesRead = nwStream.Read(buffer, 0, client.ReceiveBufferSize);

            //---convert the data received into a string---
            string dataReceived = Encoding.ASCII.GetString(buffer, 0, bytesRead);
            Console.WriteLine("Received : " + dataReceived);

            //---write back the text to the client---
            Console.WriteLine("Sending back : " + dataReceived);
            nwStream.Write(buffer, 0, bytesRead);
            client.Close();
        }
        listener.Stop();
        Console.ReadLine();
    }

@Nudier Menaの回答に加えて、whileループを維持して、サーバーをリスニングモードに保ちます。クライアントの複数のインスタンスを接続できるようにします。

8
   public partial class Form1 : Form
    {
        private Thread n_server;
        private Thread n_client;
        private Thread n_send_server;
        private TcpClient client;
        private TcpListener listener;
        private int port = 2222;
        private string IP = " ";
        private Socket socket;
        byte[] bufferReceive = new byte[4096];
        byte[] bufferSend = new byte[4096];
        public Form1()
        {
            InitializeComponent();
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        public void Server()
        {
            listener = new TcpListener(IPAddress.Any, port);
            listener.Start();
            try
            {
                socket = listener.AcceptSocket();
                if (socket.Connected)
                {
                    textBox3.Invoke((MethodInvoker)delegate { textBox3.Text = "Client        : " + socket.RemoteEndPoint.ToString(); });
                }
                while (true)
                {
                    int length = socket.Receive(bufferReceive);
                    if (length > 0)
                    {
                        label2.Invoke((MethodInvoker)delegate { label2.Text = Encoding.Unicode.GetString(bufferReceive); });
                    }
                }
            }
            catch
            {
            }
        }

        public void Client()
        {
            IP = "localhost";
            client = new TcpClient();
            try
            {
                client.Connect(IP, port);
                while (true)
                {
                    NetworkStream nts = client.GetStream();
                    int length;
                    while ((length = nts.Read(bufferReceive, 0, bufferReceive.Length)) != 0)
                    {
                       label3.Invoke((MethodInvoker)delegate { label3.Text = Encoding.Unicode.GetString(bufferReceive); });
                    }
                }
            }

            catch (Exception ex)
            {
                MessageBox.Show("Error : " + ex.Message);
            }

            if (client.Connected)
            {
                textBox3.Invoke((MethodInvoker)delegate { textBox3.Text = "Connected..."; });

            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            n_server = new Thread(new ThreadStart(Server));
            n_server.IsBackground = true;
            n_server.Start();
            textBox1.Text = "Server up";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            n_client = new Thread(new ThreadStart(Client));
            n_client.IsBackground = true;
            n_client.Start();
        }

        private void send()
        {
            if (socket!=null)
            {
                bufferSend = Encoding.Unicode.GetBytes(textBox2.Text);
                socket.Send(bufferSend);
            }
            else
            {
                if (client.Connected)
                {
                    bufferSend = Encoding.Unicode.GetBytes(textBox3.Text);
                    NetworkStream nts = client.GetStream();
                    if (nts.CanWrite)
                    {
                        nts.Write(bufferSend,0,bufferSend.Length);
                    }

                }
            }
        }



        private void button3_Click(object sender, EventArgs e)
        {
            n_send_server = new Thread(new ThreadStart(send));
            n_send_server.IsBackground = true;
            n_send_server.Start();
        }
    }
0
EghbalMohammadi