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"""Notification Receiver Application (TRAP PDU)"""
from pysnmp.carrier.asynsock.dispatch import AsynsockDispatcher
from pysnmp.carrier.asynsock.dgram import udp
from pyasn1.codec.ber import decoder
from pysnmp.proto import api
def cbFun(transportDispatcher, transportDomain, transportAddress, wholeMsg):
while wholeMsg:
msgVer = int(api.decodeMessageVersion(wholeMsg))
pMod = api.protoModules[msgVer]
reqMsg, wholeMsg = decoder.decode(
wholeMsg, asn1Spec=pMod.Message(),
)
print 'Notification message from %s:%s: ' % (
transportDomain, transportAddress
)
reqPDU = pMod.apiMessage.getPDU(reqMsg)
if reqPDU.isSameTypeWith(pMod.TrapPDU()):
if msgVer == api.protoVersion1:
print 'Enterprise: %s' % (
pMod.apiTrapPDU.getEnterprise(reqPDU)
)
print 'Agent Address: %s' % (
repr(pMod.apiTrapPDU.getAgentAddr(reqPDU))
)
print 'Generic Trap: %s' % (
pMod.apiTrapPDU.getGenericTrap(reqPDU)
)
print 'Specific Trap: %s' % (
pMod.apiTrapPDU.getSpecificTrap(reqPDU)
)
print 'Uptime: %s' % (
pMod.apiTrapPDU.getTimeStamp(reqPDU)
)
print 'Var-binds:'
for varBind in pMod.apiTrapPDU.getVarBindList(reqPDU):
print pMod.apiVarBind.getOIDVal(varBind)
else:
print 'Var-binds:'
for varBind in pMod.apiPDU.getVarBindList(reqPDU):
print pMod.apiVarBind.getOIDVal(varBind)
return wholeMsg
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(('localhost', 162))
)
transportDispatcher.registerRecvCbFun(cbFun)
transportDispatcher.jobStarted(1) # this job would never finish
transportDispatcher.runDispatcher()
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