--- Log opened Tue Jun 09 00:00:45 2020
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01:05 < zmnscpxj_> niftynei: are you online?
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02:31 < zmnscpxj_> Need help with anyone who actually understands fundchannel_complete and fundchannel_cancel.
02:31 < zmnscpxj_> It looks to me, that because of the function funding_success in lightningd/opening_channel.c, if I run fundchannel_cancel while a fundchannel_complete is running, fundchannel_cancel can fail
02:32 < zmnscpxj_> and fundchannel_complete will finish successfully
02:32 < zmnscpxj_> but my understanding of the fundchannel_cancel semantics was that it should definitely cancel the funding attempt, no questions asked, no special cases
02:32 < zmnscpxj_> meaning it should actually error the channel in that case
02:33 < zmnscpxj_> instead of saying "Try fundchannel_cancel again."
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03:22 < darosior> zmnscpxj_: It's actually racy, see test_funding_cancel_race() in tests/test_connection.py which descrbes well the behavior
03:22  * zmnscpxj_ groans
03:24 < zmnscpxj_> so workaround is to wait for all `fundchannel_complete` to definitely succeed or definitely fail first before doing cleanup?
03:24 < zmnscpxj_> that works...?
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04:40 < darosior> I think so, anyway (assuming you're talking about fundmulti) you need to wait for all to succeed either or you'd not have the commitment tx signed for an output ?
04:41 < zmnscpxj_> yes but if one of them fails you could just fail at that point
04:41 < zmnscpxj_> except doing fundchannel_cancel while other sparks are doing fundchannel_complete runs into the race condition
04:41 < zmnscpxj_> oh well
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08:20 < darosior> Ah ok I understand (didn't checked the message)
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19:21 < zmnscpxj_> do we have a command to tell a peer "no, this channel_id will never confirm" that isn't fundchannel_cancel?
19:22 < zmnscpxj_> fundchannel_cancel fails if we locally think we are not funding
19:22 < zmnscpxj_> but failing fundchannel_complete automatically makes us think we are not funding anymore
19:22 < zmnscpxj_> so future fundchannel_cancels do not send this "no, this channel_id will never confirm" error message
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--- Log closed Wed Jun 10 00:00:46 2020