这是个学习socket的好例子,大家下来看看(我想)
问题解决.把Data类改了点
class Data
{
//Default constructor
public Data()
{
this.cmdCommand = Command.Null;
this.strMessage = null;
this.strName = null;
}
//Converts the bytes into an object of type Data
public Data(byte[] data)
{
//The first four bytes are for the Command
this.cmdCommand = (Command)BitConverter.ToInt32(data, 0);
//The next four store the length of the name
int nameLen = BitConverter.ToInt32(data, 4);
//The next four store the length of the message
int msgLen = BitConverter.ToInt32(data, 8);
//This check makes sure that strName has been passed in the array of bytes
if (nameLen > 0)
this.strName = Encoding.BigEndianUnicode.GetString(data, 12, nameLen*2);
else
this.strName = null;
//This checks for a null message field
if (msgLen > 0)
this.strMessage = Encoding.BigEndianUnicode.GetString(data, 12 + nameLen*2, msgLen*2);
else
this.strMessage = null;
}
//Converts the Data structure into an array of bytes
public byte[] ToByte()
{
List<byte> result = new List<byte>();
//First four are for the Command
result.AddRange(BitConverter.GetBytes((int)cmdCommand));
//Add the length of the name
if (strName != null)
result.AddRange(BitConverter.GetBytes(strName.Length));
else
result.AddRange(BitConverter.GetBytes(0));
//Length of the message
if (strMessage != null)
result.AddRange(BitConverter.GetBytes(strMessage.Length));
else
result.AddRange(BitConverter.GetBytes(0));
//Add the name
if (strName != null)
result.AddRange(Encoding.BigEndianUnicode.GetBytes(strName));
//And, lastly we add the message text to our array of bytes
if (strMessage != null)
result.AddRange(Encoding.BigEndianUnicode.GetBytes(strMessage));
return result.ToArray();
}
public string strName; //Name by which the client logs into the room
public string strMessage; //Message text
public Command cmdCommand; //Command type (login, logout, send message, etcetera)
}
}