public WebSocketMessage CreateCloseMessage(string errorMessage, WebSocketCloseStatusCode closeStatusCode)
{
byte[] error = Encoding.UTF8.GetBytes(errorMessage.Trim());
if (error.Length > 123)
{
throw new Exception("close frame payload data length must be 0-125");
}
List <WebSocketFragment> fragments = new List <WebSocketFragment>();
List <byte> list = new List <byte>();
Byte firstByte = 0x88;
Byte secondByte = (Byte)error.Length;
list.Add(firstByte);
list.Add(secondByte);
for (int j = 0; j < 2; j++)
{
Byte b = (Byte)((int)closeStatusCode >> 8 * j);
list.Add(b);
}
for (int i = 0; i < error.Length; i++)
{
list.Add(error[i]);
}
WebSocketFragment fragment = new WebSocketFragment(list.ToArray());
fragments.Add(fragment);
return(new WebSocketMessage(fragments));
}
public void Close(string closeMessage, WebSocketCloseStatusCode closeStatusCode)
{
//关系close之前需要先发送关闭帧
WebSocketMessage message = messageHandler.CreateCloseMessage(closeMessage, closeStatusCode);
Send(message);
serverSocket.Shutdown(SocketShutdown.Both);
serverSocket.Close();
serverSocket.Dispose();
}
