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Fixed AutoInterface roaming on Android devices that rotate Ethernet/WiFi MAC addresses on reconnect

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This commit is contained in:
Mark Qvist 2022-11-24 17:19:01 +01:00
parent 28e43b52f9
commit f692e81b8e
1 changed files with 33 additions and 7 deletions
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40
RNS/Interfaces/AutoInterface.py
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@ -48,6 +48,11 @@ class AutoInterface(Interface):
BITRATE_GUESS = 10*1000*1000
def handler_factory(self, callback):
def create_handler(*args, **keys):
return AutoInterfaceHandler(callback, *args, **keys)
return create_handler
def __init__(self, owner, name, group_id=None, discovery_scope=None, discovery_port=None, data_port=None, allowed_interfaces=None, ignored_interfaces=None, configured_bitrate=None):
import importlib
if importlib.util.find_spec('netifaces') != None:
@ -70,6 +75,7 @@ class AutoInterface(Interface):
self.peers = {}
self.link_local_addresses = []
self.adopted_interfaces = {}
self.interface_servers = {}
self.multicast_echoes = {}
self.timed_out_interfaces = {}
@ -199,11 +205,6 @@ class AutoInterface(Interface):
peering_wait = self.announce_interval*1.2
RNS.log(str(self)+" discovering peers for "+str(round(peering_wait, 2))+" seconds...", RNS.LOG_VERBOSE)
def handlerFactory(callback):
def createHandler(*args, **keys):
return AutoInterfaceHandler(callback, *args, **keys)
return createHandler
self.owner = owner
socketserver.UDPServer.address_family = socket.AF_INET6
@ -212,9 +213,10 @@ class AutoInterface(Interface):
addr_info = socket.getaddrinfo(local_addr, self.data_port, socket.AF_INET6, socket.SOCK_DGRAM)
address = addr_info[0][4]
self.server = socketserver.UDPServer(address, handlerFactory(self.processIncoming))
udp_server = socketserver.UDPServer(address, self.handler_factory(self.processIncoming))
self.interface_servers[ifname] = udp_server
thread = threading.Thread(target=self.server.serve_forever)
thread = threading.Thread(target=udp_server.serve_forever)
thread.daemon = True
thread.start()
@ -277,8 +279,32 @@ class AutoInterface(Interface):
if address["addr"].startswith("fe80:"):
link_local_addr = address["addr"].split("%")[0]
if link_local_addr != self.adopted_interfaces[ifname]:
# TODO: Remove
# RNS.log("Replacing link-local address for "+str(ifname), RNS.LOG_DEBUG)
self.adopted_interfaces[ifname] = link_local_addr
local_addr = link_local_addr+"%"+ifname
addr_info = socket.getaddrinfo(local_addr, self.data_port, socket.AF_INET6, socket.SOCK_DGRAM)
listen_address = addr_info[0][4]
if ifname in self.interface_servers:
# TODO: Remove
# RNS.log("Shutting down previous UDP socket server for "+str(ifname), RNS.LOG_DEBUG)
previous_server = self.interface_servers[ifname]
def shutdown_server():
previous_server.shutdown()
threading.Thread(target=shutdown_server, daemon=True).start()
# TODO: Remove
# RNS.log("Starting new UDP socket server for "+str(ifname), RNS.LOG_DEBUG)
udp_server = socketserver.UDPServer(listen_address, self.handler_factory(self.processIncoming))
self.interface_servers[ifname] = udp_server
thread = threading.Thread(target=udp_server.serve_forever)
thread.daemon = True
thread.start()
except Exception as e:
RNS.log("Could not get device information while updating link-local addresses for "+str(self)+". The contained exception was: "+str(e), RNS.LOG_ERROR)