def test_tcpdump_noblock(self):
"""Check tcpdump uses nonblocking next_line"""
self.ping_all_when_learned()
from_host = self.net.hosts[0]
to_host = self.net.hosts[1]
tcpdump_filter = ('icmp')
tcpdump_helper = TcpdumpHelper(
to_host, tcpdump_filter,
[lambda: from_host.cmd('ping -c10 %s' % to_host.IP())],
blocking=False, packets=None)
count = 0
while tcpdump_helper.next_line():
count = count + 1
self.assertTrue(count < 10, 'Too many ping results before noblock')
self._terminate_with_nonzero(tcpdump_helper)
def test_tcpdump_noblock(self):
"""Check tcpdump uses nonblocking next_line"""
self.ping_all_when_learned()
from_host = self.net.hosts[0]
to_host = self.net.hosts[1]
tcpdump_filter = ('icmp')
tcpdump_helper = TcpdumpHelper(
to_host, tcpdump_filter,
[lambda: from_host.cmd('ping -c10 %s' % to_host.IP())],
blocking=False, packets=None)
count = 0
while tcpdump_helper.next_line():
count = count + 1
self.assertTrue(count < 10, 'Too many ping results before noblock')
self._terminate_with_nonzero(tcpdump_helper)
def test_tcpdump_nextline(self):
"""Check tcpdump filter monitors ping using next_line"""
self.ping_all_when_learned()
from_host = self.net.hosts[0]
to_host = self.net.hosts[1]
tcpdump_filter = ('icmp')
tcpdump_helper = TcpdumpHelper(to_host, tcpdump_filter, [
lambda: from_host.cmd('ping -c5 -i2 %s' % to_host.IP())])
self.assertTrue(re.search('proto ICMP', tcpdump_helper.next_line()))
next_line = tcpdump_helper.next_line()
self.assertTrue(re.search('%s: ICMP echo request' % to_host.IP(), next_line), next_line)
self.assertTrue(re.search('proto ICMP', tcpdump_helper.next_line()))
next_line = tcpdump_helper.next_line()
self.assertTrue(re.search('%s: ICMP echo reply' % from_host.IP(), next_line), next_line)
self.assertFalse(re.search('ICMP', tcpdump_helper.next_line()))
while tcpdump_helper.next_line():
pass
self._terminate_with_zero(tcpdump_helper)
def test_tcpdump_nextline(self):
"""Check tcpdump filter monitors ping using next_line"""
self.ping_all_when_learned()
from_host = self.net.hosts[0]
to_host = self.net.hosts[1]
tcpdump_filter = ('icmp')
tcpdump_helper = TcpdumpHelper(to_host, tcpdump_filter, [
lambda: from_host.cmd('ping -c5 -i2 %s' % to_host.IP())])
self.assertTrue(re.search('proto ICMP', tcpdump_helper.next_line()))
next_line = tcpdump_helper.next_line()
self.assertTrue(re.search('%s: ICMP echo request' % to_host.IP(), next_line), next_line)
self.assertTrue(re.search('proto ICMP', tcpdump_helper.next_line()))
next_line = tcpdump_helper.next_line()
self.assertTrue(re.search('%s: ICMP echo reply' % from_host.IP(), next_line), next_line)
self.assertFalse(re.search('ICMP', tcpdump_helper.next_line()))
while tcpdump_helper.next_line():
pass
self._terminate_with_zero(tcpdump_helper)