def _action_TXCON(self):
# log
log.debug('_action_TXCON()')
# flag error if max number of CON transmits reached
if self.numTxCON > self.maxRetransmit + 1:
# this is an error case
self.coapError = e.coapTimeout(
'No ACK received after {0} tries (max {1})'.format(
self.numTxCON,
self.maxRetransmit + 1,
))
return
# build message
message = m.buildMessage(
msgtype=d.TYPE_CON,
token=self.token,
code=self.code,
messageId=self.messageId,
options=self.options,
payload=self.payload,
securityContext=self.securityContext,
partialIV=self.requestSeq,
)
# send
self.sendFunc(
destIp=self.destIp,
destPort=self.destPort,
msg=message,
)
# increment number of transmitted messages
self.numTxCON += 1
# update FSM state
self._setState(self.STATE_WAITFORACK)
# kick FSM
self._kickFsm()
def _action_WAITFORRESP(self):
# log
log.debug('_action_WAITFORRESP()')
startTime = time.time()
while True:
waitTimeLeft = startTime+self.respTimeout-time.time()
if self.rxMsgEvent.wait(timeout=waitTimeLeft):
# I got message
with self.dataLock:
(timestamp,srcIp,srcPort,message) = self.LastRxPacket
if isinstance(message,e.coapRc):
with self.dataLock:
self.coapError = message
return
elif (
(
message['type']==d.TYPE_CON or
message['type']==d.TYPE_NON
) and
message['token']==self.token
):
# store response
with self.dataLock:
self.receivedResp = (timestamp,srcIp,srcPort,message)
# update FSM state
self._setState(self.STATE_RESPRX)
# kick FSM
self._kickFsm()
return
else:
# this is an error case
self.coapError = e.coapTimeout('No Response received after {0}s'.format(
self.respTimeout,
)
)
return
def _action_TXCON(self):
# log
log.debug('_action_TXCON()')
# flag error if max number of CON transmits reached
if self.numTxCON>self.maxRetransmit+1:
# this is an error case
self.coapError = e.coapTimeout('No ACK received after {0} tries (max {1})'.format(
self.numTxCON,
self.maxRetransmit+1,
)
)
return
# build message
message = m.buildMessage(
type = d.TYPE_CON,
token = self.token,
code = self.code,
messageId = self.messageId,
options = self.options,
payload = self.payload,
)
# send
self.sendFunc(
destIp = self.destIp,
destPort = self.destPort,
msg = message,
)
# increment number of transmitted messages
self.numTxCON += 1
# update FSM state
self._setState(self.STATE_WAITFORACK)
# kick FSM
self._kickFsm()
def _action_WAITFORRESP(self):
# log
log.debug('_action_WAITFORRESP()')
startTime = time.time()
while True:
waitTimeLeft = startTime + self.respTimeout - time.time()
if self.rxMsgEvent.wait(timeout=waitTimeLeft):
# I got message
with self.dataLock:
(timestamp, srcIp, srcPort, message) = self.LastRxPacket
if isinstance(message, e.coapRc):
with self.dataLock:
self.coapError = message
return
elif ((message['type'] == d.TYPE_CON
or message['type'] == d.TYPE_NON)
and message['token'] == self.token):
# store response
with self.dataLock:
self.receivedResp = (timestamp, srcIp, srcPort,
message)
# update FSM state
self._setState(self.STATE_RESPRX)
# kick FSM
self._kickFsm()
return
else:
# this is an error case
self.coapError = e.coapTimeout(
'No Response received after {0}s'.format(
self.respTimeout, ))
return
