def find_node(start: Node, node_name: str) -> Optional[Intf]:
"""
:param start: The starting node of the search
:param node_name: The name of the node to find
:return: The interface of the node connected to start with node_name as name
"""
if start.name == node_name:
return start.intf()
visited = set() # type: Set[IPIntf]
to_visit = realIntfList(start)
# Explore all interfaces recursively, until we find one
# connected to the node
while to_visit:
i = to_visit.pop()
if i in visited:
continue
visited.add(i)
for n in i.broadcast_domain.interfaces:
if n.node.name == node_name:
return n
if L3Router.is_l3router_intf(n):
to_visit.extend(realIntfList(n.node))
return None
class testHwintf(unittest.TestCase):
prompt = 'mininet>'
def setUp(self):
self.h3 = Node('t0', ip='10.0.0.3/8')
self.n0 = Node('t1', inNamespace=False)
Link(self.h3, self.n0)
self.h3.configDefault()
def testLocalPing(self):
"Verify connectivity between virtual hosts using pingall"
p = pexpect.spawn('python -m mininet.examples.hwintf %s' %
self.n0.intf())
p.expect(self.prompt)
p.sendline('pingall')
p.expect('(\d+)% dropped')
percent = int(p.match.group(1)) if p.match else -1
self.assertEqual(percent, 0)
p.expect(self.prompt)
p.sendline('exit')
p.wait()
def testExternalPing(self):
"Verify connnectivity between virtual host and virtual-physical 'external' host "
p = pexpect.spawn('python -m mininet.examples.hwintf %s' %
self.n0.intf())
p.expect(self.prompt)
# test ping external to internal
expectStr = '(\d+) packets transmitted, (\d+) received'
m = re.search(expectStr, self.h3.cmd('ping -v -c 1 10.0.0.1'))
tx = m.group(1)
rx = m.group(2)
self.assertEqual(tx, rx)
# test ping internal to external
p.sendline('h1 ping -c 1 10.0.0.3')
p.expect(expectStr)
tx = p.match.group(1)
rx = p.match.group(2)
self.assertEqual(tx, rx)
p.expect(self.prompt)
p.sendline('exit')
p.wait()
def tearDown(self):
self.h3.stop(deleteIntfs=True)
self.n0.stop(deleteIntfs=True)
class testHwintf( unittest.TestCase ):
prompt = 'mininet>'
def setUp( self ):
self.h3 = Node( 't0', ip='10.0.0.3/8' )
self.n0 = Node( 't1', inNamespace=False )
Link( self.h3, self.n0 )
self.h3.configDefault()
def testLocalPing( self ):
"Verify connectivity between virtual hosts using pingall"
p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % self.n0.intf() )
p.expect( self.prompt )
p.sendline( 'pingall' )
p.expect ( '(\d+)% dropped' )
percent = int( p.match.group( 1 ) ) if p.match else -1
self.assertEqual( percent, 0 )
p.expect( self.prompt )
p.sendline( 'exit' )
p.wait()
def testExternalPing( self ):
"Verify connnectivity between virtual host and virtual-physical 'external' host "
p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % self.n0.intf() )
p.expect( self.prompt )
# test ping external to internal
expectStr = '(\d+) packets transmitted, (\d+) received'
m = re.search( expectStr, self.h3.cmd( 'ping -v -c 1 10.0.0.1' ) )
tx = m.group( 1 )
rx = m.group( 2 )
self.assertEqual( tx, rx )
# test ping internal to external
p.sendline( 'h1 ping -c 1 10.0.0.3')
p.expect( expectStr )
tx = p.match.group( 1 )
rx = p.match.group( 2 )
self.assertEqual( tx, rx )
p.expect( self.prompt )
p.sendline( 'exit' )
p.wait()
def tearDown( self ):
self.h3.stop( deleteIntfs=True )
self.n0.stop( deleteIntfs=True )