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[posix-sim] use multicast to simulate radio (#3993)

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This commit uses multicast to simulate radio transmissions. This
avoids sending a frame multiple times and avoids duplicated packets in
captures.

This implementation uses two separate sockets for tx and rx. The
current implementation of thread-cert requires the sniffer to report
the sender of each packet. This issue can be addressed by stateful
tracking state of each node, but left for future work.
This commit is contained in:
Yakun Xu
2019-07-16 09:03:42 -07:00
committed by Jonathan Hui
parent b289c94122
commit e80f46a993
7 changed files with 143 additions and 84 deletions
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tests/scripts/thread-cert/config.py
+2 -2
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@@ -459,8 +459,8 @@ def create_default_thread_message_factory(master_key=DEFAULT_MASTER_KEY):
return message.MessageFactory(lowpan_parser=lowpan_parser)
def create_default_thread_sniffer(nodeid=SNIFFER_ID):
return sniffer.Sniffer(nodeid, create_default_thread_message_factory())
def create_default_thread_sniffer():
return sniffer.Sniffer(create_default_thread_message_factory())
def create_default_simulator():