gstreamer/libs/gst/net/gstnetutils.c

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/* GStreamer
* Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
* Copyright (C) 2017 Robert Rosengren <robertr@axis.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstnetutils
* @title: GstNetUtils
* @short_description: Network utility functions.
*
* GstNetUtils gathers network utility functions, enabling use for all
* gstreamer plugins.
*
* Since: 1.18
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstnetutils.h"
#include <gst/gstinfo.h>
#include <errno.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifndef G_OS_WIN32
#include <netinet/in.h>
#endif
/**
* gst_net_utils_set_socket_tos:
* @socket: Socket to configure
* @qos_dscp: QoS DSCP value
*
* Configures IP_TOS value of socket, i.e. sets QoS DSCP.
*
* Returns: TRUE if successful, FALSE in case an error occurred.
*
* Since: 1.18
*/
gboolean
gst_net_utils_set_socket_tos (GSocket * socket, gint qos_dscp)
{
gboolean ret = FALSE;
#ifdef IP_TOS
gint tos, fd;
fd = g_socket_get_fd (socket);
/* Extract and shift 6 bits of DSFIELD */
tos = (qos_dscp & 0x3f) << 2;
if (setsockopt (fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)) < 0) {
GST_ERROR ("could not set TOS: %s", g_strerror (errno));
} else {
ret = TRUE;
}
#ifdef IPV6_TCLASS
if (g_socket_get_family (socket) == G_SOCKET_FAMILY_IPV6) {
if (setsockopt (fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof (tos)) < 0) {
GST_ERROR ("could not set TCLASS: %s", g_strerror (errno));
} else {
ret = TRUE;
}
}
#endif
#endif
return ret;
}