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浅析C#中的套接字编程(5)

2005-01-05 23:47 316 查看

浅析C#中的套接字编程(5)

作者：王凯明 www.ASPCool.com 时间:2002-4-10 21:24:07 阅读次数:4688

     在此之后，当然就是用户之间的聊天了，由ReceiveChat（）函数来完成。该函数是一个独立的线程，它处理所有用户获得的消息和用户发送的消息。它主要处理了CHAT、PRIV、JOIN、GONE、QUIT等命令，处理的方法和服务器端的类似。具体函数实现如下：


  private void ReceiveChat()


  {


  bool keepalive = true;


  while (keepalive)


  {


  try


  {


  Byte[] buffer = new Byte[2048];


  ns.Read(buffer,0,buffer.Length);


  string chatter = System.Text.Encoding.ASCII.GetString(buffer);




  string[] tokens = chatter.Split(new Char[]{'|'});




  if (tokens[0] == "CHAT")


  {


  rtbChatIn.AppendText(tokens[1]);


  if(logging)


  logwriter.WriteLine(tokens[1]);


  }


  if (tokens[0] == "PRIV")


  {


  rtbChatIn.AppendText("Private from ");


  rtbChatIn.AppendText(tokens[1].Trim() );


  rtbChatIn.AppendText(tokens[2] + "/r/n");


  if(logging)


  {


  logwriter.Write("Private from ");


  logwriter.Write(tokens[1].Trim() );


  logwriter.WriteLine(tokens[2] + "/r/n");


  }


  }


  if (tokens[0] == "JOIN")


  {


  rtbChatIn.AppendText(tokens[1].Trim() );


  rtbChatIn.AppendText(" has joined the Chat/r/n");


  if(logging)


  {


  logwriter.WriteLine(tokens[1]+" has joined the Chat");


  }


  string newguy = tokens[1].Trim(new char[]{'/r','/n'});


  lbChatters.Items.Add(newguy);


  }


  if (tokens[0] == "GONE")


  {


  rtbChatIn.AppendText(tokens[1].Trim() );


  rtbChatIn.AppendText(" has left the Chat/r/n");


  if(logging)


  {


  logwriter.WriteLine(tokens[1]+" has left the Chat");


  }


  lbChatters.Items.Remove(tokens[1].Trim(new char[]{'/r','/n'}));


  }


  if (tokens[0] == "QUIT")


  {


  ns.Close();


  clientsocket.Close();


  keepalive = false;


  statusBar1.Text = "服务器端已停止";


  connected= false;


  btnSend.Enabled = false;


  btnDisconnect.Enabled = false;


  }


  }


  catch(Exception){}


  }


  }

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标签： 编程 c# logging buffer string exception

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