WPF uses sockets for simple chat software

Company network restrictions can not transfer files, first paste part of the code

Project structure:

1. Solution

1.1. Client

1.2. Server

Client:

<Windowx:class= "Csharpsocketexample.mainwindow"xmlns= "Http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x= "Http://schemas.microsoft.com/winfx/2006/xaml"Title= "MainWindow"Height= "375"Width= "524">    <GridMargin= "0,0,2,-20">        <ButtonName= "Btn_connection"Content= "Send"HorizontalAlignment= "Left"Margin= "292,288,0,0"VerticalAlignment= "Top"Width= " the"Click= "Btn_connection_click"/>        <TextBlockName= "Tblock_message"HorizontalAlignment= "Left"Margin= "34,10,0,0"textwrapping= "Wrap"VerticalAlignment= "Top"Height= "208"Width= "464"/>        <ButtonName= "Btn_refresh"Content= "Refresh"HorizontalAlignment= "Left"Margin= "292,244,0,0"VerticalAlignment= "Top"Width= " the"Click= "Btn_refresh_click"/>        <LabelContent= "nickname"HorizontalAlignment= "Left"Margin= "34,244,0,0"VerticalAlignment= "Top"/>        <TextBoxx:name= "Tb_username"HorizontalAlignment= "Left"Height= "All"Margin= "92,247,0,0"textwrapping= "Wrap"VerticalAlignment= "Top"Width= "136"/>        <LabelContent= "message"HorizontalAlignment= "Left"Margin= "34,284,0,0"VerticalAlignment= "Top"/>        <ButtonName= "Btn_clear"Content= "Clear Screen"HorizontalAlignment= "Left"Margin= "401,244,0,0"VerticalAlignment= "Top"Width= " the"Click= "Btn_clear_click"/>

Private voidBtn_connection_click (Objectsender, RoutedEventArgs e) {            intPort =6000; stringHost ="127.0.0.1"; IPAddress IP=Ipaddress.parse (host); IPEndPoint Ipe=Newipendpoint (IP, port); Socket Clientsocket=Newsockets (AddressFamily.InterNetwork, SocketType.Stream, protocoltype.tcp); Clientsocket.connect (IPE);//Send Message            stringSendstr =tb_username. Text +": "+Tb_message.            Text; byte[] Sendbytes =Encoding.UTF8.GetBytes (SENDSTR);            Clientsocket.send (sendbytes); //Receive Message            stringRecstr =""; byte[] Recbytes =New byte[4096]; intbytes = Clientsocket.receive (recbytes, Recbytes.length,0); Recstr+ = Encoding.UTF8.GetString (Recbytes,0, bytes); Tblock_message. Text=Recstr;clientsocket.close (); }        Private voidBtn_refresh_click (Objectsender, RoutedEventArgs e) {            intPort =6000; stringHost ="127.0.0.1"; IPAddress IP =Ipaddress.parse (host); IPEndPoint Ipe=Newipendpoint (IP, port); Socket Clientsocket=Newsockets (AddressFamily.InterNetwork, SocketType.Stream, protocoltype.tcp);            Clientsocket.connect (IPE); //Send Message            stringSendstr ="Refresh"; byte[] Sendbytes =Encoding.UTF8.GetBytes (SENDSTR); Clientsocket.send (sendbytes);//Receive Message            stringRecstr =""; byte[] Recbytes =New byte[4096]; intbytes = Clientsocket.receive (recbytes, Recbytes.length,0); Recstr+ = Encoding.UTF8.GetString (Recbytes,0, bytes); Tblock_message. Text=Recstr;        Clientsocket.close (); }

Server:

namespaceserver{classProgram {Static voidMain (string[] args) {            intPort =6000; stringHost ="127.0.0.1"; IPAddress IP=Ipaddress.parse (host); IPEndPoint Ipe=Newipendpoint (IP, port); Socket Socket=Newsockets (AddressFamily.InterNetwork, SocketType.Stream, protocoltype.tcp); Socket.            Bind (IPE); Socket. Listen (0); Console.WriteLine ("Listen Server Open."); stringHistory ="";  while(true)            {                //Receive MessageSocket ServerSocket =socket.                Accept (); Console.WriteLine ("Connection successful."); history+="\ r"; stringHistory ="";  while(true)            {                //Receive MessageSocket ServerSocket =socket.                Accept (); Console.WriteLine ("Connection successful."); history+="\ r"; stringRecstr =""; byte[] RecByte =New byte[4096]; intbytes = Serversocket.receive (RecByte, Recbyte.length,0); Recstr+ = Encoding.UTF8.GetString (RecByte,0, bytes); if(Recstr! ="Refresh") { history+=Recstr; }                //Send MessageConsole.WriteLine ("Receive message:{0}", RECSTR); stringSendstr =History .                ToString (); byte[] Sendbyte =Encoding.UTF8.GetBytes (SENDSTR); Serversocket.send (Sendbyte, Sendbyte.length,0);                Serversocket.close (); //socket. Close ();

WPF uses sockets for simple chat software