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e87110317b
Continue adding some complexity behind the BlindedPaymentPathSet. What we do here is add a new IntroNodeOnlyPath method. The assumption we make here is: If multiple blinded paths are provided to us in an invoice but one of those paths only includes an intro node, then there is no point in looking at any other path since we know that the intro node is the destination node. So in such a case, we would have discarded any other path in the `NewBlindedPaymentPathSet` constructor. So then we would only have a single blinded path made up of an introduction node only. In this specific case, in the `newRoute` function, no edge passed to the function would have a blindedPayment associated with it (since there are no blinded hops in this case). So we will have a case where `blindedPathSet` passed to `newRoute` is not nil but `blindedPayment` is nil since nonce was extacted from any edge. If this happens then we can assume that this is the Intro-Node-Only situation described above. And so we grabe the associated payment from the path set.
routing
The routing package implements authentication+validation of channel announcements, pruning of the channel graph, path finding within the network, sending outgoing payments into the network and synchronizing new peers to our channel graph state.
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/routing