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Provide analogus improvements to ssdp from slp

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Recent changes to try to make neigh table fresh and viable in slp
can also apply to ssdp.

Bring those changes forward.
This commit is contained in:
Jarrod Johnson 2021-10-05 10:03:28 -04:00
parent 1fda0e50d8
commit f50abd662a
2 changed files with 58 additions and 29 deletions
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5
confluent_server/confluent/discovery/protocols/slp.py
View File

@ -549,16 +549,19 @@ def active_scan(handler, protocol=None):
# Implement a warmup, inducing neighbor table activity
# by kernel and giving 2 seconds for a retry or two if
# needed
missingneigh = False
for scanned in scan():
toprocess.append(scanned)
for addr in scanned['addresses']:
macaddr = neighutil.get_hwaddr(addr[0])
if not macaddr:
missingneigh = True
if ':' in addr[0]:
net6.sendto(b'\x00', addr)
else:
net4.sendto(b'\x00', addr)
eventlet.sleep(2.2)
if missingneigh:
eventlet.sleep(2.2)
for scanned in toprocess:
for addr in scanned['addresses']:
if addr in known_peers:

82
confluent_server/confluent/discovery/protocols/ssdp.py
View File

@ -35,6 +35,7 @@ import confluent.noderange as noderange
import confluent.util as util
import confluent.log as log
import confluent.netutil as netutil
import eventlet
import eventlet.green.select as select
import eventlet.green.socket as socket
import eventlet.greenpool as gp
@ -66,6 +67,8 @@ def active_scan(handler, protocol=None):
hwaddr = neighutil.get_hwaddr(addr[0])
if not hwaddr:
continue
if not scanned.get('hwaddr', None):
scanned['hwaddr'] = hwaddr
known_peers.add(addr)
else:
scanned['protocol'] = protocol
@ -77,6 +80,32 @@ def scan(services, target=None):
yield rply
def _process_snoop(peer, rsp, mac, known_peers, newmacs, peerbymacaddress, byehandler, machandlers):
known_peers.add(peer)
newmacs.add(mac)
if mac in peerbymacaddress:
peerbymacaddress[mac]['addresses'].append(peer)
else:
peerbymacaddress[mac] = {
'hwaddr': mac,
'addresses': [peer],
}
peerdata = peerbymacaddress[mac]
for headline in rsp[1:]:
if not headline:
continue
headline = util.stringify(headline)
header, _, value = headline.partition(':')
header = header.strip()
value = value.strip()
if header == 'NT':
peerdata['service'] = value
elif header == 'NTS':
if value == 'ssdp:byebye':
machandlers[mac] = byehandler
elif value == 'ssdp:alive':
machandlers[mac] = None # handler
def snoop(handler, byehandler=None, protocol=None, uuidlookup=None):
"""Watch for SSDP notify messages
@ -119,6 +148,7 @@ def snoop(handler, byehandler=None, protocol=None, uuidlookup=None):
while True:
try:
newmacs = set([])
deferrednotifies = []
machandlers = {}
r, _, _ = select.select((net4, net6), (), (), 60)
while r:
@ -127,37 +157,18 @@ def snoop(handler, byehandler=None, protocol=None, uuidlookup=None):
if rsp[:4] == b'PING':
continue
rsp = rsp.split(b'\r\n')
method, _, _ = rsp[0].split(b' ', 2)
if b' ' not in rsp[0]:
continue
method, _ = rsp[0].split(b' ', 1)
if method == b'NOTIFY':
if peer in known_peers:
continue
mac = neighutil.get_hwaddr(peer[0])
if not mac:
s.sendto(b'\x00', peer)
deferrednotifies.append((peer, rsp))
continue
known_peers.add(peer)
newmacs.add(mac)
if mac in peerbymacaddress:
peerbymacaddress[mac]['addresses'].append(peer)
else:
peerbymacaddress[mac] = {
'hwaddr': mac,
'addresses': [peer],
}
peerdata = peerbymacaddress[mac]
for headline in rsp[1:]:
if not headline:
continue
headline = util.stringify(headline)
header, _, value = headline.partition(':')
header = header.strip()
value = value.strip()
if header == 'NT':
peerdata['service'] = value
elif header == 'NTS':
if value == 'ssdp:byebye':
machandlers[mac] = byehandler
elif value == 'ssdp:alive':
machandlers[mac] = None # handler
_process_snoop(peer, rsp, mac, known_peers, newmacs, peerbymacaddress, byehandler, machandlers)
elif method == b'M-SEARCH':
if not uuidlookup:
continue
@ -215,6 +226,12 @@ def snoop(handler, byehandler=None, protocol=None, uuidlookup=None):
reply = reply.encode('utf8')
s.sendto(reply, peer)
r, _, _ = select.select((net4, net6), (), (), 0.2)
if deferrednotifies:
eventlet.sleep(2.2)
mac = neighutil.get_hwaddr(peer[0])
if not mac:
continue
_process_snoop(peer, rsp, mac, known_peers, newmacs, peerbymacaddress, byehandler, machandlers)
for mac in newmacs:
thehandler = machandlers.get(mac, None)
if thehandler:
@ -276,14 +293,24 @@ def _find_service(service, target):
deadline = util.monotonic_time() + 4
r, _, _ = select.select((net4, net6), (), (), 4)
peerdata = {}
deferparse = []
while r:
for s in r:
(rsp, peer) = s.recvfrom(9000)
if not neighutil.get_hwaddr(peer[0]):
deferparse.append((rsp, peer))
s.sendto(b'\x00', peer)
continue
_parse_ssdp(peer, rsp, peerdata)
timeout = deadline - util.monotonic_time()
if timeout < 0:
timeout = 0
r, _, _ = select.select((net4, net6), (), (), timeout)
if deferparse:
eventlet.sleep(2.2)
for dp in deferparse:
rsp, peer = dp
_parse_ssdp(peer, rsp, peerdata)
querypool = gp.GreenPool()
pooltargs = []
for nid in peerdata:
@ -348,7 +375,6 @@ def _parse_ssdp(peer, rsp, peerdata):
if __name__ == '__main__':
for rsp in scan(['urn:dmtf-org:service:redfish-rest:1'], '10.240.52.189'):
def printit(rsp):
print(repr(rsp))
active_scan(printit)