hi
this code server
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace Asynchronous_Server
{
public class Form1 : System.Windows.Forms.Form
{
Socket server = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, 5020);
private byte[] data = new byte[1024];
private int size = 1024;
private System.Windows.Forms.TextBox conStatus;
private System.Windows.Forms.ListBox results;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.results = new System.Windows.Forms.ListBox();
this.conStatus = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.results.BackColor = System.Drawing.Color.AliceBlue;
this.results.Dock = System.Windows.Forms.DockStyle.Fill;
this.results.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(178)));
this.results.Items.AddRange(new object[] {
"Clients Transmissions ..."});
this.results.Location = new System.Drawing.Point(0, 0);
this.results.Name = "results";
this.results.Size = new System.Drawing.Size(288, 174);
this.results.TabIndex = 0;
this.results.SelectedIndexChanged += new System.EventHandler(this.results_SelectedIndexChanged);
this.conStatus.BackColor = System.Drawing.Color.Gainsboro;
this.conStatus.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.conStatus.Dock = System.Windows.Forms.DockStyle.Bottom;
this.conStatus.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Italic, System.Drawing.GraphicsUnit.Point, ((byte)(178)));
this.conStatus.Location = new System.Drawing.Point(0, 153);
this.conStatus.Name = "conStatus";
this.conStatus.ReadOnly = true;
this.conStatus.Size = new System.Drawing.Size(288, 21);
this.conStatus.TabIndex = 1;
this.conStatus.Text = "Waiting for client...";
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(288, 174);
this.Controls.Add(this.conStatus);
this.Controls.Add(this.results);
this.Name = "Form1";
this.Text = "Asynchronous Server";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
void AcceptConn(IAsyncResult iar)
{
Socket oldserver = (Socket)iar.AsyncState;
Socket client = oldserver.EndAccept(iar);
conStatus.Text = "Connected to: " + client.RemoteEndPoint.ToString();
string stringData = "Welcome to my server";
byte[] message1 = Encoding.ASCII.GetBytes(stringData);
client.BeginSend(message1, 0, message1.Length, SocketFlags.None,new AsyncCallback(SendData), client);
server.BeginAccept(new AsyncCallback(AcceptConn), server);
}
void SendData(IAsyncResult iar)
{
Socket client = (Socket)iar.AsyncState;
int sent = client.EndSend(iar);
client.BeginReceive(data, 0, size, SocketFlags.None,new AsyncCallback(ReceiveData), client);
}
void ReceiveData(IAsyncResult iar)
{
Socket client = (Socket)iar.AsyncState;
int recv = client.EndReceive(iar);
if (recv == 0)
{
client.Close();
conStatus.Text = "Waiting for client...";
server.BeginAccept(new AsyncCallback(AcceptConn), server);
return;
}
string receivedData = Encoding.ASCII.GetString(data, 0, recv);
results.Items.Add(receivedData);
byte[] message2 = Encoding.ASCII.GetBytes(receivedData);
client.BeginSend(message2, 0, message2.Length, SocketFlags.None,new AsyncCallback(SendData), client);
}
void ButtonStopOnClick(object obj, EventArgs ea)
{
Close();
}
private void Form1_Load(object sender, System.EventArgs e)
{
server = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, 5020);
server.Bind(iep);
server.Listen(-1);
server.BeginAccept(new AsyncCallback(AcceptConn), server);
}
private void results_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
}
and this code client
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace ASyn_Client_Example
{
public class Form1 : System.Windows.Forms.Form
{
private Socket client;
private byte[] data = new byte[1024];
private int size = 1024;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox newText;
private System.Windows.Forms.ListBox results;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.TextBox conStatus;
private System.Windows.Forms.TextBox textBox1;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.newText = new System.Windows.Forms.TextBox();
this.results = new System.Windows.Forms.ListBox();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.conStatus = new System.Windows.Forms.TextBox();
this.textBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.button1.Enabled = false;
this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
this.button1.Location = new System.Drawing.Point(328, 24);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 56);
this.button1.TabIndex = 0;
this.button1.Text = "Send";
this.button1.Click += new System.EventHandler(this.button1_Click);
this.newText.BackColor = System.Drawing.Color.Azure;
this.newText.Location = new System.Drawing.Point(16, 24);
this.newText.Name = "newText";
this.newText.ReadOnly = true;
this.newText.Size = new System.Drawing.Size(304, 20);
this.newText.TabIndex = 1;
this.newText.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.newText_KeyPress);
this.results.BackColor = System.Drawing.Color.LightCyan;
this.results.Location = new System.Drawing.Point(16, 56);
this.results.Name = "results";
this.results.Size = new System.Drawing.Size(304, 95);
this.results.TabIndex = 2;
this.results.SelectedIndexChanged += new System.EventHandler(this.results_SelectedIndexChanged);
this.button2.Enabled = false;
this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
this.button2.Location = new System.Drawing.Point(328, 128);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(75, 24);
this.button2.TabIndex = 3;
this.button2.Text = "Disconnect";
this.button2.Click += new System.EventHandler(this.button2_Click);
this.button3.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
this.button3.Location = new System.Drawing.Point(328, 160);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(75, 24);
this.button3.TabIndex = 4;
this.button3.Text = "Connect";
this.button3.Click += new System.EventHandler(this.button3_Click);
this.conStatus.BackColor = System.Drawing.SystemColors.InactiveBorder;
this.conStatus.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.conStatus.Dock = System.Windows.Forms.DockStyle.Bottom;
this.conStatus.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Italic, System.Drawing.GraphicsUnit.Point, ((byte)(178)));
this.conStatus.Location = new System.Drawing.Point(0, 187);
this.conStatus.Name = "conStatus";
this.conStatus.Size = new System.Drawing.Size(408, 21);
this.conStatus.TabIndex = 5;
this.conStatus.Text = "Disconnected";
this.textBox1.BackColor = System.Drawing.Color.Azure;
this.textBox1.Location = new System.Drawing.Point(16, 160);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(304, 20);
this.textBox1.TabIndex = 6;
this.textBox1.Text = "127.0.0.1";
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.BackColor = System.Drawing.SystemColors.Control;
this.ClientSize = new System.Drawing.Size(408, 208);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.conStatus);
this.Controls.Add(this.newText);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.results);
this.Controls.Add(this.button1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.MaximizeBox = false;
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Asynchronous Client";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
void ReceiveData(IAsyncResult iar)
{
try
{
Socket remote = (Socket)iar.AsyncState;
int recv = remote.EndReceive(iar);
string stringData = Encoding.ASCII.GetString(data, 0, recv);
results.Items.Add(stringData);
}
catch(Exception ex){MessageBox.Show(ex.Message);}
}
void SendData(IAsyncResult iar)
{
try
{
Socket remote = (Socket)iar.AsyncState;
int sent = remote.EndSend(iar);
remote.BeginReceive(data, 0, size, SocketFlags.None,
new AsyncCallback(ReceiveData), remote);
}
catch(Exception ex){MessageBox.Show(ex.Message);}
}
void Connected(IAsyncResult iar)
{
client = (Socket)iar.AsyncState;
try
{
client.EndConnect(iar);
conStatus.Text = "Connected to: " + client.RemoteEndPoint.ToString();
client.BeginReceive(data, 0, size, SocketFlags.None,
new AsyncCallback(ReceiveData), client);
}
catch (SocketException)
{
conStatus.Text = "Error connecting";
}
}
private void Form1_Load(object sender, System.EventArgs e)
{
}
private void button1_Click(object sender, System.EventArgs e)
{
try
{
byte[] message = Encoding.ASCII.GetBytes(newText.Text);
newText.Clear();
client.BeginSend(message, 0, message.Length, SocketFlags.None,new AsyncCallback(SendData), client);
newText.Focus();
}
catch(Exception ex){MessageBox.Show(ex.Message);}
}
private void button3_Click(object sender, System.EventArgs e)
{
try
{
conStatus.Text = "Connecting...";
Socket newsock = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
IPEndPoint iep = new IPEndPoint(IPAddress.Parse(textBox1.Text), 5020);
newsock.BeginConnect(iep, new AsyncCallback(Connected), newsock);
newText.Focus();
button1.Enabled = true;
button2.Enabled = true;
newText.ReadOnly = false;
}
catch(Exception ex){MessageBox.Show(ex.Message);}
}
private void button2_Click(object sender, System.EventArgs e)
{
client.Close();
button1.Enabled = false;
button2.Enabled = false;
newText.ReadOnly = true;
conStatus.Text = "Disconnected";
}
private void newText_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if (button1.Enabled == true)
if(e.KeyChar == '\r')
{
button1_Click(sender,e);
}
}
private void results_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
}
when run and connect client with server i have problem in
conStatus.Text = "Connected to: " + client.RemoteEndPoint.ToString();
what are i can do ?
when do connect give me this error and out from client program
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