#pragma once

// NOLINT(namespace-envoy)

// Some sensible limits to protect against excess resource use

/* Ref. RFC 6455 */

/*

    0                   1                   2                   3

    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

   +-+-+-+-+-------+-+-------------+-------------------------------+

   |F|R|R|R| opcode|M| Payload len |    Extended payload length    |

   |I|S|S|S|  (4)  |A|     (7)     |             (16/64)           |

   |N|V|V|V|       |S|             |   (if payload len==126/127)   |

   | |1|2|3|       |K|             |                               |

   +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - +

   |     Extended payload length continued, if payload len == 127  |

   + - - - - - - - - - - - - - - - +-------------------------------+

   |                               |Masking-key, if MASK set to 1  |

   +-------------------------------+-------------------------------+

   | Masking-key (continued)       |          Payload Data         |

   +-------------------------------- - - - - - - - - - - - - - - - +

   :                     Payload Data continued ... :

   + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +

   |                     Payload Data continued ... |

   +---------------------------------------------------------------+

*/

/*

 Opcode:  4 bits

    Defines the interpretation of the "Payload data". If an unknown

    opcode is received, the receiving endpoint MUST _Fail the

    WebSocket Connection_. The following values are defined.

    *  %x0 denotes a continuation frame

    *  %x1 denotes a text frame

    *  %x2 denotes a binary frame

    *  %x3-7 are reserved for further non-control frames

    *  %x8 denotes a connection close

    *  %x9 denotes a ping

    *  %xA denotes a pong

    *  %xB-F are reserved for further control frames

    */

#define OPCODE_CONTINUE 0

#define OPCODE_TEXT 1