def HandlePing(self, sPing, sOrigin):
"""Handle incoming Ping
Called by CRPCRequestHandler.
Parse params-string into DOM
Pass Ping to cOwlManager.Distribute()
Generate Answer-Pong.
Pass Pong to cOwlManager.Answer()
"""
try:
# create cDOM from ascii-Ping
domPing = cDOM.cDOM()
domPing.ParseString(sPing)
# create cNetPackage from DOM-Ping
cPing = cNetPackage.cNetPackage('ping')
cPing.ParseDOM(domPing)
# set originator ip
cPing.SetOriginatorIP(sOrigin)
# log incoming ping
pManager.manager.DebugStr('cNetManager '+ __version__ +': Incoming Ping from %s:%s.' %(str(cPing.GetOriginator()[0]), str(cPing.GetOriginator()[1])), 2)
# pass ping to cOwlManager. If cOwlManager accepts ping, answer with pong
pManager.manager.DebugStr('cNetManager '+ __version__ +': Distributing Ping.', 3)
if self.cOwlManager.Distribute(cPing) == 'okay':
# generate Pong
try:
cPong = self.GeneratePong(cPing)
except:
# Could not generate Pong
pManager.manager.DebugStr('cNetManager '+ __version__ +': Could not generate Pong.', 2)
return
# pass Pong to cOlwManager
pManager.manager.DebugStr('cNetManager '+ __version__ +': Answering with Pong.', 3)
self.cOwlManager.Answer(cPong)
else:
# something was wrong with that Ping...
pass
except:
# unknown error. log and forget.
# get exception
eType, eValue, eTraceback = sys.exc_info()
# build stacktrace string
tb = ''
for line in traceback.format_tb(eTraceback, 15):
tb = tb + line
pManager.manager.DebugStr('pNetwork '+ __version__ +': Unhandled error in thread HandlePing(): Type: '+str(eType)+', value: '+str(eValue), 2)
pManager.manager.DebugStr('pNetwork '+ __version__ +': Traceback:\n'+str(tb), 2)
def GeneratePing(self):
"""Generate and return a cNetPackage object"""
# generate ping
cPing = cNetPackage.cNetPackage('ping')
# set unique id
cPing.SetID(pManager.manager.GetUniqueNumber())
# set originator
cPing.SetOriginatorPort(self.cNetServer.GetListenPort())
# set iOwl-Version
cPing.SetOwlVersion(pManager.manager.GetVersion())
# set network protocol version
cPing.SetProtocolVersion(self.sProtocol)
# set ttl
cPing.SetTTL(self.iTTL)
return cPing
