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#!/usr/bin/env python
#
# Copyright 2008,2010,2013 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
from gnuradio import gr, gr_unittest, blocks
import numpy
import os
import socket
import time
from threading import Timer, Thread
def recv_data(sock, result):
while True:
data = sock.recv(4*1000)
if len(data) == 0:
break
real_data = numpy.frombuffer(data, dtype=numpy.float32)
result.extend(list(real_data))
class test_udp_sink_source(gr_unittest.TestCase):
def setUp(self):
os.environ['GR_CONF_CONTROLPORT_ON'] = 'False'
self.tb_snd = gr.top_block()
self.tb_rcv = gr.top_block()
def tearDown(self):
self.tb_rcv = None
self.tb_snd = None
def test_001(self):
# Tests calling disconnect/reconnect.
port = 65510
n_data = 16
src_data = [x for x in range(n_data)]
expected_result = src_data
src = blocks.vector_source_s(src_data, False)
udp_snd = blocks.udp_sink(gr.sizeof_short, 'localhost', port)
self.tb_snd.connect(src, udp_snd)
self.tb_snd.run()
udp_snd.disconnect()
udp_snd.connect('localhost', port+1)
src.rewind()
self.tb_snd.run()
def test_sink_001(self):
port = 65520
n_data = 100
src_data = [float(x) for x in range(n_data)]
expected_result = src_data
recvsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
recvsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
recvsock.bind(('127.0.0.1', port))
result = []
t = Thread(target=recv_data, args=(recvsock, result))
t.start()
src = blocks.vector_source_f(src_data, False)
udp_snd = blocks.udp_sink(gr.sizeof_float, '127.0.0.1', port)
self.tb_snd.connect(src, udp_snd)
self.tb_snd.run()
udp_snd.disconnect()
t.join()
recvsock.close()
self.assertEqual(expected_result, result)
def test_source_001(self):
port = 65520
n_data = 100
src_data = [float(x) for x in range(n_data)]
expected_result = src_data
send_data = numpy.array(src_data, dtype=numpy.float32)
send_data = send_data.tobytes()
udp_rcv = blocks.udp_source(gr.sizeof_float, '127.0.0.1', port)
dst = blocks.vector_sink_f()
self.tb_rcv.connect(udp_rcv, dst)
self.tb_rcv.start()
time.sleep(1.0)
sendsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sendsock.sendto(send_data, ('127.0.0.1', port))
time.sleep(1.0)
sendsock.sendto(b'', ('127.0.0.1', port))
sendsock.sendto(b'', ('127.0.0.1', port))
sendsock.sendto(b'', ('127.0.0.1', port))
self.tb_rcv.wait()
sendsock.close()
recv_data = dst.data()
self.assertEqual(expected_result, recv_data)
def test_003(self):
port = 65530
udp_rcv = blocks.udp_source(gr.sizeof_float, '0.0.0.0', 0, eof=False)
rcv_port = udp_rcv.get_port()
udp_snd = blocks.udp_sink(gr.sizeof_float, '127.0.0.1', port)
udp_snd.connect('127.0.0.1', rcv_port)
n_data = 16
src_data = [float(x) for x in range(n_data)]
expected_result = src_data
src = blocks.vector_source_f(src_data)
dst = blocks.vector_sink_f()
self.tb_snd.connect(src, udp_snd)
self.tb_rcv.connect(udp_rcv, dst)
self.tb_rcv.start()
time.sleep(0.1)
self.tb_snd.run()
udp_snd.disconnect()
self.timeout = False
q = Timer(2.0,self.stop_rcv)
q.start()
self.tb_rcv.wait()
q.cancel()
result_data = dst.data()
self.assertEqual(expected_result, result_data)
self.assertTrue(self.timeout) # source ignores EOF?
def stop_rcv(self):
self.timeout = True
self.tb_rcv.stop()
#print "tb_rcv stopped by Timer"
if __name__ == '__main__':
gr_unittest.run(test_udp_sink_source, "test_udp_sink_source.xml")
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