#!/bin/bash
#
# Integration loopback test for villas-pipe.
#
# @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/>.
##################################################################################

CONFIG_FILE=$(mktemp)
INPUT_FILE=$(mktemp)
OUTPUT_FILE=$(mktemp)

NUM_SAMPLES=${NUM_SAMPLES:-10}

cat > ${CONFIG_FILE} << EOF
nodes = {
	node1 = {
		type = "socket";
		layer = "udp";

		local = "*:12000";
		remote = "224.1.2.3:12000";
		
		multicast = {				# IGMP multicast is only support for layer = (ip|udp)
			enabled		= true,	
			
			group		= "224.1.2.3",	# The multicast group. Must be within 224.0.0.0/4
			loop		= true		# Whether or not to loopback outgoing multicast packets to the local host.
		}
	}
}
EOF

# Generate test data
villas-signal random -l ${NUM_SAMPLES} -n > ${INPUT_FILE}

# We delay EOF of the INPUT_FILE by 1 second in order to wait for incoming data to be received
villas-pipe -l ${NUM_SAMPLES} ${CONFIG_FILE} node1 > ${OUTPUT_FILE} < ${INPUT_FILE}

# Comapre data
villas-test-cmp ${INPUT_FILE} ${OUTPUT_FILE}
RC=$?

rm ${OUTPUT_FILE} ${INPUT_FILE} ${CONFIG_FILE}

exit $RC