feat: accept 0-conf for non RBF swap outputs #118
Merged
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This PR prepares the backend for accepting 0-conf swaps. In order to accept 0-conf transactions in a safely manner, one has to verify that the transaction does not signal BIP-125 RBF. I added that logic to the
SwapNursery
and added an additional condition to accepting 0-conf transactions: the middleware has to explicitly allow 0-conf for that specific swap when creating it. This allows for accepting 0-conf for low amounts but forcing the user to wait for bigger swaps.