Avoid negative on-the-fly funding fee #3189
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Since we don't have access to channel params in the `Peer` actor, we don't know the remote `htlc_minimum` when receiving a splice. This may lead to cases where we later fail because we end up with a negative funding fee, which doesn't make any sense. To avoid those failures, we hard-code the `htlc_minimum` value used by Phoenix (which is the only consumer of this protocol so far) and use the max with our local `htlc_minimum`.
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Since we don't have access to channel params in the
Peeractor, we don't know the remotehtlc_minimumwhen receiving a splice. This may lead to cases where we later fail because we end up with a negative funding fee, which doesn't make any sense.To avoid those failures, we hard-code the
htlc_minimumvalue used by Phoenix (which is the only consumer of this protocol so far) and use the max with our localhtlc_minimum.