m.Http.Backend.Tcp.WebSocketSession.SendClose C# (CSharp) Method

        public void SendClose(ushort statusCode=0, string reason=null)
        {
            lock (stateLock)
            {
                if (sentClose)
                {
                    return;
                }

                sentClose = true;
            }

            Write(OpCode.Close, FrameEncoder.GetClosePayload(statusCode, reason));
        }