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Impproved path re-discovery on Transport Instances when local nodes roam to other network segments

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This commit is contained in:
Mark Qvist 2023-09-21 13:46:28 +02:00
parent 1e6cd50f46
commit 9c823a038b
1 changed files with 31 additions and 2 deletions
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33
RNS/Transport.py
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@ -430,12 +430,41 @@ class Transport:
if link_entry[6] in Transport.path_requests:
last_path_request = Transport.path_requests[link_entry[6]]
lr_taken_hops = link_entry[5]
path_request_throttle = time.time() - last_path_request < Transport.PATH_REQUEST_MI
path_request_conditions = False
# If the path has been invalidated between the time of
# making the link request and now, try to rediscover it
if not Transport.has_path(link_entry[6]):
RNS.log("Trying to rediscover path for "+RNS.prettyhexrep(link_entry[6])+" since an attempted link was never established, and path is now missing", RNS.LOG_DEBUG)
path_request_conditions =True
# If this link request was originated from a local client
# attempt to rediscover a path to the destination, if this
# has not already happened recently.
lr_taken_hops = link_entry[5]
if lr_taken_hops == 0 and time.time() - last_path_request > Transport.PATH_REQUEST_MI:
elif not path_request_throttle and lr_taken_hops == 0:
RNS.log("Trying to rediscover path for "+RNS.prettyhexrep(link_entry[6])+" since an attempted local client link was never established", RNS.LOG_DEBUG)
path_request_conditions = True
# If the link destination was previously only 1 hop
# away, this likely means that it was local to one
# of our interfaces, and that it roamed somewhere else.
# In that case, try to discover a new path.
elif not path_request_throttle and Transport.hops_to(link_entry[6]) == 1:
RNS.log("Trying to rediscover path for "+RNS.prettyhexrep(link_entry[6])+" since an attempted link was never established, and destination was previously local to an interface on this instance", RNS.LOG_DEBUG)
path_request_conditions = True
# If the link destination was previously only 1 hop
# away, this likely means that it was local to one
# of our interfaces, and that it roamed somewhere else.
# In that case, try to discover a new path.
elif not path_request_throttle and lr_taken_hops == 1:
RNS.log("Trying to rediscover path for "+RNS.prettyhexrep(link_entry[6])+" since an attempted link was never established, and link initiator is local to an interface on this instance", RNS.LOG_DEBUG)
path_request_conditions = True
if path_request_conditions:
if not link_entry[6] in path_requests:
path_requests.append(link_entry[6])