本文實現一個簡單的多線程客戶/服務器即時通訊應用程序，它將使用TCP連接。允許客戶之間及客戶 和服務器之間，個人消息與會議通信。最終目標是實現象雅虎/msn這樣的即時通訊工具。
[庫]
我創建一個ChatLibrary，它包含命令及可以著色的消息。public enum Command
{
Login = 0,
PersonalMessage = 1,
ClIEntList = 2,
Conference = 3,
Logout = 4
};
public class Message
{
string strSender;
string strReceiver;
Command cmdMessageCommand;
string strMessageDetail;
public Message ()
{
}
public Message (byte [] rawMessage)
{
string strRawStringMessage = System.Text.Encoding.ASCII.GetString (rawMessage);
string [] strRawStringMessageArray = strRawStringMessage.Split(new char []{'|'});
this.strSender = strRawStringMessageArray[1];
this.strReceiver = strRawStringMessageArray[2];
this.cmdMessageCommand = (Command) Convert.ToInt32(strRawStringMessageArray[3]);
this.MessageDetail = strRawStringMessageArray[4];
}
...
public byte [] GetRawMessage ()
{
System.Text.StringBuilder sbMessage = new System.Text.StringBuilder ("John");
sbMessage.Append("|");
sbMessage.Append(strSender);
sbMessage.Append("|");
sbMessage.Append(strReceiver);
sbMessage.Append("|");
sbMessage.Append((int)cmdMessageCommand);
sbMessage.Append("|");
sbMessage.Append(strMessageDetail);
sbMessage.Append("|");
return System.Text.Encoding.ASCII.GetBytes(sbMessage.ToString());
}
...
