好吧,我正在嘗試通過TCP/IP爲我的一羣在線玩DnD的朋友創建一個簡單的聊天應用程序。最終我想添加更多功能,但現在我只想聊天工作!爲什麼我的閱讀器和書寫器突然停止工作?
這裏是我對主服務器
class MainServer
{
IPAddress m_address = IPAddress.Parse("127.0.0.1");
Int32 m_port = 5550;
public static Hashtable userNicknames = new Hashtable(50);
public static Hashtable connectionToNick = new Hashtable(50);
public MainServer()
{
TcpListener listener = new TcpListener(m_address, m_port);
Thread listenThread = new Thread(new ParameterizedThreadStart(StartListening));
listenThread.Start(listener);
Console.WriteLine("Listening for incoming connection requests...");
}
private void StartListening(Object listener)
{
TcpListener server = (TcpListener)listener;
ClientCommCenter commC;
server.Start();
while (true)
{
if (server.Pending())
{
TcpClient client = server.AcceptTcpClient();
Console.WriteLine("Client has connected...");
commC = new ClientCommCenter(client);
}
}
}
public static void SendSystemMessage(string msg)
{
StreamWriter writer;
TcpClient[] connectedClients = new TcpClient[MainServer.userNicknames.Count];
MainServer.userNicknames.Values.CopyTo(connectedClients, 0);
for (int ii = 0; ii < connectedClients.Length; ii++)
{
try
{
if (msg.Trim().Equals(String.Empty))
continue;
writer = new StreamWriter(connectedClients[ii].GetStream());
writer.WriteLine("Message from server: " + msg);
writer.Flush();
writer = null;
}
catch (Exception e)
{
MainServer.userNicknames.Remove(MainServer.connectionToNick[connectedClients[ii]]);
MainServer.connectionToNick.Remove(connectedClients[ii]);
}
}
}
public static void SendMessageToAll(string nickname, string msg)
{
StreamWriter writer;
TcpClient[] connectedClients = new TcpClient[MainServer.userNicknames.Count];
MainServer.userNicknames.Values.CopyTo(connectedClients, 0);
for (int ii = 0; ii < connectedClients.Length; ii++)
{
try
{
if (msg.Trim().Equals(String.Empty))
continue;
writer = new StreamWriter(connectedClients[ii].GetStream());
writer.WriteLine(nickname + ": " + msg);
writer.Flush();
writer = null;
}
catch (Exception e)
{
String user = (string)MainServer.connectionToNick[connectedClients[ii]];
SendSystemMessage("ATTENTION: " + user + " has disconnected from chat");
MainServer.userNicknames.Remove(user);
MainServer.connectionToNick.Remove(connectedClients[ii]);
}
}
}
}
這裏是主要的通信類,
class ClientCommCenter
{
TcpClient m_client;
StreamReader m_reader;
StreamWriter m_writer;
String m_nickname;
public ClientCommCenter(TcpClient client)
{
m_client = client;
Thread chatThread = new Thread(new ThreadStart(StartChat));
chatThread.Start();
}
private String GetNick()
{
m_writer.WriteLine("Enter a nickname to begin.");
m_writer.Flush();
return m_reader.ReadLine();
}
private void StartChat()
{
m_reader = new StreamReader(m_client.GetStream());
m_writer = new StreamWriter(m_client.GetStream());
m_writer.WriteLine("Connected to DnD Chat!!");
m_nickname = GetNick();
while (MainServer.userNicknames.Contains(m_nickname))
{
m_writer.WriteLine("ERROR!!! Username already in use");
m_nickname = GetNick();
}
MainServer.userNicknames.Add(m_nickname, m_client);
MainServer.connectionToNick.Add(m_client, m_nickname);
MainServer.SendSystemMessage("****** " + m_nickname + " ****** has joined the chat!");
m_writer.WriteLine("Now connected....");
m_writer.Flush();
Thread startChatting = new Thread(new ThreadStart(runChat));
startChatting.Start();
}
private void runChat()
{
try
{
String clientMessage = String.Empty;
while(true){
clientMessage = m_reader.ReadLine();
MainServer.SendMessageToAll(m_nickname, clientMessage);
}
}
catch(Exception e)
{
Console.WriteLine(e);
}
}
}
,最後由每個客戶單獨使用的代碼,在這裏是Client類的代碼:
public partial class MainForm : Form
{
[DllImport("kernel32.dll")]
private static extern void ExitProcess(int a);
TcpClient client;
StreamReader m_reader;
StreamWriter m_writer;
public MainForm()
{
InitializeComponent();
}
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
e.Cancel = false;
Application.Exit();
if (m_reader != null)
{
m_reader.Dispose();
}
ExitProcess(0);
}
private void MainForm_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
SendChat();
}
}
private void SendChat()
{
TextBox txtChat = (TextBox)chatEntry;
if (chatEntry.Lines.Length >= 1)
{
m_writer.WriteLine(txtChat.Text);
m_writer.Flush();
chatEntry.Text = String.Empty;
chatEntry.Lines = null;
}
}
private void RunChat()
{
StreamReader reader = new StreamReader(client.GetStream());
while (true)
{
Application.DoEvents();
if (this.InvokeRequired)
{
this.Invoke(new MethodInvoker(delegate{
RunChat();
}));
}
if (reader.Peek() > 0)
{
chatDisplay.AppendText(reader.ReadLine() + "\r\n");
chatDisplay.SelectionStart = chatDisplay.Text.Length;
}
}
}
private void toolstripConnectButton_Click(object sender, EventArgs e)
{
client = new TcpClient("127.0.0.1", 5550);
m_writer = new StreamWriter(client.GetStream());
m_reader = new StreamReader(client.GetStream());
Thread chatThread = new Thread(new ThreadStart(RunChat));
chatThread.Start();
while (true)
{
Application.DoEvents();
}
}
private void sendButton_Click(object sender, EventArgs e)
{
SendChat();
}
}
我對上述代碼的問題是這樣的:我可以很好地連接到正在運行的服務器,並且我已正確提示服務器已連接,然後提示我輸入暱稱。
我在文本框中鍵入暱稱,然後按發送。但是,在發生這種情況後,我不再一起接收來自服務器的消息。毫無意義。我什至垃圾的連接按鈕,並不斷地顯示了兩個相同的消息:
「已連接」 「輸入一個綽號」
我一直在努力,現在摸不着頭腦了近5個小時,而我根本不知道發生了什麼。我覺得這是非常簡單的事情,因爲解決方案總是很簡單。
所以,慷慨的人,你能解決我的問題嗎?爲什麼我的StreamReader和Streamwriter突然停止工作?!?!?!
您是否收到任何錯誤或僅收到沒有數據? –
它看起來像你正在閱讀從TCP連接暱稱而不是客戶端控制檯/文本框 – mao47
我的壞 - 我誤解了代碼的一部分。您是否曾嘗試在客戶端和/或服務器上進行調試,以檢查代碼是否正在發送暱稱並接收暱稱?您是否使用wireshark或fiddler來檢查網絡流量,看看您是否實際上正在發送數據包? – mao47