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Implemented bandwidth cap for recursive path requests

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This commit is contained in:
Mark Qvist 2022-05-23 19:49:48 +02:00
parent c0fbde5ad1
commit c24233845e
1 changed files with 29 additions and 2 deletions
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31
RNS/Transport.py
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@ -1767,7 +1767,7 @@ class Transport:
return False
@staticmethod
def request_path(destination_hash, on_interface=None, tag=None):
def request_path(destination_hash, on_interface=None, tag=None, recursive=False):
"""
Requests a path to the destination from the network. If
another reachable peer on the network knows a path, it
@ -1788,6 +1788,33 @@ class Transport:
path_request_dst = RNS.Destination(None, RNS.Destination.OUT, RNS.Destination.PLAIN, Transport.APP_NAME, "path", "request")
packet = RNS.Packet(path_request_dst, path_request_data, packet_type = RNS.Packet.DATA, transport_type = RNS.Transport.BROADCAST, header_type = RNS.Packet.HEADER_1, attached_interface = on_interface)
if on_interface != None and recursive:
if not hasattr(on_interface, "announce_cap"):
on_interface.announce_cap = RNS.Reticulum.ANNOUNCE_CAP
if not hasattr(on_interface, "announce_allowed_at"):
on_interface.announce_allowed_at = 0
if not hasattr(on_interface, "announce_queue"):
on_interface.announce_queue = []
queued_announces = True if len(on_interface.announce_queue) > 0 else False
if queued_announces:
# TODO: Reset to extra level, probably
RNS.log("Blocking recursive path request on "+str(on_interface)+" due to queued announces", RNS.LOG_DEBUG)
return
else:
now = time.time()
if now < on_interface.announce_allowed_at:
# TODO: Reset to extra level, probably
RNS.log("Blocking recursive path request on "+str(on_interface)+" due to active announce cap", RNS.LOG_DEBUG)
return
else:
tx_time = ((len(path_request_data)+RNS.Reticulum.HEADER_MINSIZE)*8) / on_interface.bitrate
wait_time = (tx_time / on_interface.announce_cap)
on_interface.announce_allowed_at = now + wait_time
packet.send()
@staticmethod
@ -1933,7 +1960,7 @@ class Transport:
if not interface == attached_interface:
# Use the previously extracted tag from this path request
# on the new path requests as well, to avoid potential loops
Transport.request_path(destination_hash, on_interface=interface, tag=tag)
Transport.request_path(destination_hash, on_interface=interface, tag=tag, recursive=True)
elif not is_from_local_client and len(Transport.local_client_interfaces) > 0:
# Forward the path request on all local