websocket.h
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websocket.h
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	#ifndef ANT_HTTP_WEBSOCKET_H
	#define ANT_HTTP_WEBSOCKET_H

	#include <stdbool.h>
	#include <stddef.h>
	#include <stdint.h>
	#include "modules/http.h"

	#define ANT_WS_GUID "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"

	typedef uint8_t ant_ws_opcode_t;
	enum {
	ANT_WS_OPCODE_CONTINUATION = 0x0,
	ANT_WS_OPCODE_TEXT = 0x1,
	ANT_WS_OPCODE_BINARY = 0x2,
	ANT_WS_OPCODE_CLOSE = 0x8,
	ANT_WS_OPCODE_PING = 0x9,
	ANT_WS_OPCODE_PONG = 0xA,
	};

	typedef enum {
	ANT_WS_FRAME_INCOMPLETE = 0,
	ANT_WS_FRAME_OK,
	ANT_WS_FRAME_PROTOCOL_ERROR,
	} ant_ws_frame_result_t;

	typedef struct {
	uint8_t *payload;
	size_t payload_len;
	size_t consumed_len;
	ant_ws_opcode_t opcode;
	uint8_t mask[4];
	bool fin;
	bool masked;
	} ant_ws_frame_t;

	bool ant_ws_header_contains_token(const char value, const char token);
	bool ant_ws_validate_client_handshake(const ant_http_header_t headers, const char *key_out);
	const char ant_ws_find_header(const ant_http_header_t headers, const char *name);

	char ant_ws_accept_key(const char client_key);
	void ant_ws_frame_clear(ant_ws_frame_t *frame);

	ant_ws_frame_result_t ant_ws_parse_frame(
	const uint8_t *data,
	size_t len,
	bool require_mask,
	ant_ws_frame_t *out
	);

	uint8_t *ant_ws_encode_frame(
	ant_ws_opcode_t opcode,
	const uint8_t *payload,
	size_t payload_len,
	bool mask,
	size_t *out_len
	);

	uint8_t *ant_ws_encode_close_frame(
	uint16_t code,
	const char *reason,
	bool mask,
	size_t *out_len
	);

	#endif