add an #include about wsserver HOT 4 CLOSED

/* Frame types. */
#define WS_FR_OP_TXT  1
#define WS_FR_OP_BINARY 2
#define WS_FR_OP_CLSE 8

/**
 * Creates and send an WebSocket frame
 * with some binary message.
 * @param fd  Target to be send.
 * @param msg Message to be send.
 */
int ws_sendframe_binary(int fd, unsigned char *msg, uint64_t length)
{
	unsigned char *response;  /* Response data.  */
	unsigned char frame[10];  /* Frame.          */
	uint8_t idx_first_rData;  /* Index data.     */
	int idx_response;      /* Index response. */
	int output;               /* Bytes sent.     */

	/* Binary data. */
	frame[0] = (WS_FIN | WS_FR_OP_BINARY);

	/* Split the size between octects. */
	if (length <= 125)
	{
		frame[1] = length & 0x7F;
		idx_first_rData = 2;
	}

	/* Size between 126 and 65535 bytes. */
	else if (length >= 126 && length <= 65535)
	{
		frame[1] = 126;
		frame[2] = (length >> 8) & 255;
		frame[3] = length & 255;
		idx_first_rData = 4;
	}

	/* More than 65535 bytes. */
	else
	{
		frame[1] = 127;
		frame[2] = (unsigned char) ((length >> 56) & 255);
		frame[3] = (unsigned char) ((length >> 48) & 255);
		frame[4] = (unsigned char) ((length >> 40) & 255);
		frame[5] = (unsigned char) ((length >> 32) & 255);
		frame[6] = (unsigned char) ((length >> 24) & 255);
		frame[7] = (unsigned char) ((length >> 16) & 255);
		frame[8] = (unsigned char) ((length >> 8) & 255);
		frame[9] = (unsigned char) (length & 255);
		idx_first_rData = 10;
	}

	/* Add frame bytes. */
	idx_response = 0;
	response = malloc( sizeof(unsigned char) * (idx_first_rData + length + 1) );
	for (int i = 0; i < idx_first_rData; i++)
	{
		response[i] = frame[i];
		idx_response++;
	}

	/* Add data bytes. */
	for (int i = 0; i < length; i++)
	{
		response[idx_response] = msg[i];
		idx_response++;
	}

	output = write(fd, response, idx_response);
	free(response);
	return (output);
}