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VILLASnode/include/villas/webmsg.h

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1.6 KiB
C

/** Message related functions
*
* @file
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************************/
#pragma once
/* Forward declarations. */
struct webmsg;
/** Swaps the byte-order of the message.
*
* Message are always transmitted in network (big endian) byte order.
*
* @param m A pointer to the message
*/
void webmsg_hdr_ntoh(struct webmsg *m);
void webmsg_hdr_hton(struct webmsg *m);
void webmsg_ntoh(struct webmsg *m);
void webmsg_hton(struct webmsg *m);
/** Check the consistency of a message.
*
* The functions checks the header fields of a message.
*
* @param m A pointer to the message
* @retval 0 The message header is valid.
* @retval <0 The message header is invalid.
*/
int msg_verify(struct webmsg *m);