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[net_processing] Defer initializing m_addr_known

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Use SetupAddressRelay to only initialize `m_addr_known` as needed. For outbound
peers, we initialize the filter before sending our self announcement (not
applicable for block-relay-only connections). For inbound peers, we initialize
the filter when we get an addr related message (ADDR, ADDRV2, GETADDR).

These changes intend to mitigate address blackholes. Since an inbound peer has
to send us an addr related message to become eligible as a candidate for addr
relay, this should reduce our likelihood of sending them self-announcements.
This commit is contained in:
Amiti Uttarwar 2021-03-24 15:01:05 -07:00
parent 6653fa3328
commit 1d1ef2db7e
3 changed files with 22 additions and 11 deletions
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test/functional/test_framework/p2p.py
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@ -438,6 +438,7 @@ class P2PInterface(P2PConnection):
self.send_message(msg_sendaddrv2())
self.send_message(msg_verack())
self.nServices = message.nServices
self.send_message(msg_getaddr())
# Connection helper methods