TcpServer.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace Server
{
public class TcpServer
{
static ServerGUI serverGUI;
private const Int32 PORT = 13000;
private const String ADDRESS = "127.0.0.1";
private IPAddress localAddress;
public TcpListener tcpServer;
private static Byte[] bytes;
private static String data;
static DateTime localDate;
static String cultureName = "de-DE";
static CultureInfo cultureInfo;
private static int clientCount = 0;
private const char SEPERATOR = '|';
static NetworkStream stream;
public TcpServer()
{
serverGUI = new ServerGUI();
serverGUI.Show();
cultureInfo = new CultureInfo(cultureName);
BackgroundWorker worker1 = new BackgroundWorker();
worker1.DoWork += new DoWorkEventHandler(Worker1_DoWork);
worker1.RunWorkerAsync();
}
private void Worker1_DoWork(object sender, DoWorkEventArgs e)
{
try
{
serverGUI.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Background, (ThreadStart)(async delegate ()
{
localAddress = IPAddress.Parse(ADDRESS);
tcpServer = new TcpListener(localAddress, PORT);
localDate = DateTime.Now;
serverGUI.AddOutput("(" + localDate.ToString("g", cultureInfo) + ") chatserver has started.\n");
tcpServer.Start();
while (true)
{
TcpClient client = await tcpServer.AcceptTcpClientAsync();
ThreadPool.QueueUserWorkItem(ThreadProc, client);
}
}));
}
catch (SocketException socketEx)
{
serverGUI.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, (ThreadStart)(delegate ()
{
serverGUI.AddOutput(socketEx.Message + "\n");
}));
}
catch (Exception ex)
{
serverGUI.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, (ThreadStart)(delegate ()
{
serverGUI.AddOutput(ex.Message + "\n");
}));
}
finally
{
if (tcpServer != null)
{
tcpServer.Stop();
}
}
}
private static async void ThreadProc(object obj)
{
await serverGUI.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, (ThreadStart)(async delegate ()
{
var client = (TcpClient)obj;
bytes = new Byte[256];
data = null;
// Get a stream object for reading and writing
stream = client.GetStream();
int i = 0;
while (true)
{
if (stream.CanRead)
{
i = await stream.ReadAsync(bytes, 0, bytes.Length);
}
localDate = DateTime.Now;
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
string[] receivedStr = data.Split(SEPERATOR);
byte[] msg = null;
if (receivedStr != null && receivedStr[0] == "new")
{
clientCount++;
msg = System.Text.Encoding.ASCII.GetBytes("chatserver" + SEPERATOR + "Welcome, " + receivedStr[2] + "! - active users: " + clientCount);
if (stream.CanWrite)
{
await stream.WriteAsync(msg, 0, msg.Length);
}
serverGUI.AddOutput("(" + localDate.ToString("g", cultureInfo) + ") new client recognized!\n");
serverGUI.AddOutput(" " + receivedStr[1] + " - Nickname: " + receivedStr[2] + "\n");
serverGUI.AddOutput(" " + "active clients: " + clientCount + "\n\n");
}
else if (receivedStr != null && receivedStr[0] == "close")
{
clientCount--;
msg = System.Text.Encoding.ASCII.GetBytes("chatserver" + SEPERATOR + "Goodbye, " + receivedStr[2] + "! - active users: " + clientCount);
if (stream.CanWrite)
{
await stream.WriteAsync(msg, 0, msg.Length);
}
serverGUI.AddOutput("(" + localDate.ToString("g", cultureInfo) + ") client disconnected!\n");
serverGUI.AddOutput(" " + receivedStr[1] + " - Nickname: " + receivedStr[2] + "\n");
serverGUI.AddOutput(" " + "active clients: " + clientCount + "\n\n");
client.Close();
break;
}
else
{
msg = System.Text.Encoding.ASCII.GetBytes(data);
if (stream.CanWrite)
{
await stream.WriteAsync(msg, 0, msg.Length);
}
}
}
}));
}
}
}
（客户端）MainWindow.xaml.cs：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace Client
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
private Int32 port = 13000;
private String hostname = "127.0.0.1";
public TcpClient tcpClient;
DateTime localDate;
String cultureName = "de-DE";
CultureInfo cultureInfo;
BackgroundWorker worker1;
NetworkStream stream;
bool work = false;
private const char SEPERATOR = '|';
public MainWindow()
{
InitializeComponent();
buttonDisconnect.IsEnabled = false;
textBoxServerIP.Text = "127.0.0.1:13000";
textBoxNickname.Text = "User";
cultureInfo = new CultureInfo(cultureName);
worker1 = new BackgroundWorker();
worker1.DoWork += Worker1_DoWork;
}
private void Worker1_DoWork(object sender, DoWorkEventArgs e)
{
this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Background, (ThreadStart)(async delegate ()
{
try
{
while (work)
{
Byte[] data = System.Text.Encoding.ASCII.GetBytes("Hallo");
data = new Byte[256];
// String to store the response ASCII representation.
String responseData = String.Empty;
// Read the first batch of the TcpServer response bytes.
Int32 bytes = 0;
if (stream.CanRead)
{
bytes = await stream.ReadAsync(data, 0, data.Length);
}
responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);
string[] receivedStr = responseData.Split(SEPERATOR);
if (receivedStr != null && receivedStr[0] == "chatserver")
{
textBoxChatRoom.Text += receivedStr[0] + " (" + localDate.ToString("g", cultureInfo) + "): " + receivedStr[1] + "\n\n";
}
else if (receivedStr != null && receivedStr[0] == "msg")
{
textBoxChatRoom.Text += receivedStr[1] + " (" + localDate.ToString("g", cultureInfo) + "): " + receivedStr[2] + "\n";
}
else
{
textBoxChatRoom.Text += responseData + "\n\n";
}
}
}
catch (ArgumentNullException argumentNullEx)
{
textBoxChatRoom.Text += argumentNullEx.Message + "\n";
}
catch (SocketException socketEx)
{
textBoxChatRoom.Text += socketEx.Message + "\n";
}
catch (InvalidOperationException invalidOperationEx)
{
textBoxChatRoom.Text += invalidOperationEx.Message + "\n";
}
catch (Exception ex)
{
textBoxChatRoom.Text += ex.Message + "\n";
}
}));
}
private async void buttonConnect_Click(object sender, RoutedEventArgs e)
{
string[] connectionStr = { "" };
if (!textBoxServerIP.Text.Equals(null) && textBoxServerIP.Text != "")
{
connectionStr = textBoxServerIP.Text.Split(':');
try
{
hostname = connectionStr[0];
port = Int32.Parse(connectionStr[1]);
tcpClient = new TcpClient(connectionStr[0], Int32.Parse(connectionStr[1]));
//localDate = DateTime.Now;
textBoxChatRoom.Text += "Connecting to server " + connectionStr[0] + "...\n";
if (tcpClient.Connected)
{
textBoxChatRoom.Text += "Connected!\n";
textBoxServerIP.IsEnabled = false;
textBoxNickname.IsEnabled = false;
buttonConnect.IsEnabled = false;
buttonDisconnect.IsEnabled = true;
localDate = DateTime.Now;
stream = tcpClient.GetStream();
// Send the message to the connected TcpServer.
byte[] msg = System.Text.Encoding.ASCII.GetBytes("new" + SEPERATOR + textBoxServerIP.Text.ToString() + SEPERATOR + textBoxNickname.Text.ToString());
if (stream.CanWrite)
{
await stream.WriteAsync(msg, 0, msg.Length);
}
work = true;
worker1.RunWorkerAsync();
}
else
{
textBoxChatRoom.Text += "not connected!\n";
}
}
catch (ArgumentNullException argumentNullExceptionEx)
{
textBoxChatRoom.Text += argumentNullExceptionEx.Message + "\n";
}
catch (ArgumentOutOfRangeException argumentOutOfRangeEx)
{
textBoxChatRoom.Text += argumentOutOfRangeEx.Message + "\n";
}
catch (SocketException socketEx)
{
textBoxChatRoom.Text += socketEx.Message + "\n";
}
catch (FormatException formatEx)
{
textBoxChatRoom.Text += formatEx.Message + "\n";
}
catch (OverflowException overflowEx)
{
textBoxChatRoom.Text += overflowEx.Message + "\n";
}
catch (CultureNotFoundException cultureNotFoundEx)
{
textBoxChatRoom.Text += cultureNotFoundEx.Message + "\n";
}
catch (Exception ex)
{
textBoxChatRoom.Text += ex.Message + "\n";
}
}
else
{
textBoxChatRoom.Text += "Please enter serverip!\n";
}
}
private async void buttonDisconnect_Click(object sender, RoutedEventArgs e)
{
work = false;
buttonConnect.IsEnabled = true;
textBoxServerIP.IsEnabled = true;
textBoxNickname.IsEnabled = true;
buttonDisconnect.IsEnabled = false;
byte[] msg = System.Text.Encoding.ASCII.GetBytes("close" + SEPERATOR + textBoxServerIP.Text.ToString() + SEPERATOR + textBoxNickname.Text.ToString());
if (stream.CanWrite)
{
await stream.WriteAsync(msg, 0, msg.Length);
}
}
private void buttonExit_Click(object sender, RoutedEventArgs e)
{
Environment.Exit(0);
}
private async void buttonSend_Click(object sender, RoutedEventArgs e)
{
try
{
// Send the message to the connected TcpServer.
byte[] msg = System.Text.Encoding.ASCII.GetBytes("msg" + SEPERATOR + textBoxNickname.Text.ToString() + SEPERATOR + textBoxSend.Text);
stream = tcpClient.GetStream();
if (stream.CanWrite)
{
await stream.WriteAsync(msg, 0, msg.Length);
}
}
catch (ArgumentNullException argumentNullEx)
{
textBoxChatRoom.Text += argumentNullEx.Message + "\n";
}
catch (SocketException socketEx)
{
textBoxChatRoom.Text += socketEx.Message + "\n";
}
catch (InvalidOperationException invalidOperationEx)
{
textBoxChatRoom.Text += invalidOperationEx.Message + "\n";
}
catch (Exception ex)
{
textBoxChatRoom.Text += ex.Message + "\n";
}
}
}
}
服务器和客户端之间的连接功能，但如果我使用一个客户端向网络流发送内容，则其他客户端不会收到任何内容。这应该是一个小聊天室-WPF应用程序 我有一个问题，我无法接收和发送多个客户端，我不知道我做错了什么... 请有人帮忙......