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funding: during funding error fail before sending Error to peer 

In this commit, we modify the logic executed when we decide that we
need to fail a funding flow. Before this commit, if the remote party
disconnected while we were attempting to fail the funding flow with an
error. Then we'd never actually cancel the reservation. This meant that
any inputs selected for that transaction would be locked until a
restart.

We fix this issue by always cancelling the reservation first, and
ensuring that failure to cancel the reservation doesn't prevent us from
sending the error.

Partially addresses #710.
This commit is contained in:
Olaoluwa Osuntokun 2018-01-31 13:52:21 -08:00
parent b4e280eb15
commit c823aeafab
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GPG Key ID: 964EA263DD637C21
1 changed files with 4 additions and 1 deletions
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5
fundingmanager.go
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@ -676,13 +676,16 @@ func (f *fundingManager) failFundingFlow(peer *btcec.PublicKey,
fndgLog.Errorf("Failing funding flow: %v", spew.Sdump(errMsg))
if _, err := f.cancelReservationCtx(peer, tempChanID); err != nil {
fndgLog.Errorf("unable to cancel reservation: %v", err)
}
err := f.cfg.SendToPeer(peer, errMsg)
if err != nil {
fndgLog.Errorf("unable to send error message to peer %v", err)
return
}
f.cancelReservationCtx(peer, tempChanID)
return
}