コード例 #1
0
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <remarks>主要用于发送封装数据</remarks>
        public DataFrame(string content)
        {
            _content = Encoding.UTF8.GetBytes(content);
            int length = _content.Length;

            if (length < 126)
            {
                _extend = new byte[0];
                _header = new DataFrameHeader(true, false, false, false, OpCode.Text, false, length);
            }
            else if (length < 65536)
            {
                _extend = new byte[2];
                _header = new DataFrameHeader(true, false, false, false, OpCode.Text, false, 126);
                _extend[0] = (byte)(length / 256);
                _extend[1] = (byte)(length % 256);
            }
            else
            {
                _extend = new byte[8];
                _header = new DataFrameHeader(true, false, false, false, OpCode.Text, false, 127);

                int left = length;
                int unit = 256;

                for (int i = 7; i > 1; i--)
                {
                    _extend[i] = (byte)(left % unit);
                    left = left / unit;

                    if (left == 0)
                        break;
                }
            }
        }
コード例 #2
0
 /// <summary>
 /// 构造函数
 /// </summary>
 /// <remarks>主要用于解析接收数据</remarks>
 public DataFrame(byte[] buffer)
 {
     //格式化帧头
     _header = new DataFrameHeader(buffer);
     //填充扩展长度字节
     if (_header.Length == 126)
     {
         _extend = new byte[2];
         Buffer.BlockCopy(buffer, 2, _extend, 0, 2);
     }
     else if (_header.Length == 127)
     {
         _extend = new byte[8];
         Buffer.BlockCopy(buffer, 2, _extend, 0, 8);
     }
     //是否有掩码
     if (_header.HasMask)
     {
         _mask = new byte[4];
         Buffer.BlockCopy(buffer, _extend.Length + 2, _mask, 0, 4);
     }
     //消息体
     if (_extend.Length == 0)
     {
         _content = new byte[_header.Length];
         Buffer.BlockCopy(buffer, _extend.Length + _mask.Length + 2 , _content, 0, _content.Length);
     }
     else if (_extend.Length == 2)
     {
         _content = new byte[Convert.ToUInt16(_extend)];
         Buffer.BlockCopy(buffer, _extend.Length + _mask.Length + 2, _content, 0, _content.Length);
     }
     else
     {
         _content = new byte[Convert.ToUInt64(Common.CopyArrayData(buffer, 2, 8))];
         Buffer.BlockCopy(buffer, _extend.Length + _mask.Length + 2, _content, 0, _content.Length);
     }
     //如果有掩码,则需要还原原始数据
     if (_header.HasMask) _content = Mask(_content, _mask);
 }