/// <summary>
        /// 设置SocketAsyncEventArgs缓存区
        /// </summary>
        /// <param name="arg">SocketAsyncEventArgs对象</param>
        public static void SetBuffer(SocketAsyncEventArgs arg)
        {
            var buffer = BufferManager.GetBuffer();

            arg.SetBuffer(buffer.Array, buffer.Offset, buffer.Count);
        }