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Multi-hop blinded paths in Offers #2690

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jkczyz opened this issue Oct 26, 2023 · 0 comments · Fixed by #2781
Closed

Multi-hop blinded paths in Offers #2690

jkczyz opened this issue Oct 26, 2023 · 0 comments · Fixed by #2781
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jkczyz commented Oct 26, 2023

Currently, ChannelManager will create blinded paths with ourselves as the introduction node (i.e., one-hop blinded paths) for:

  • Offer::paths and Refund::paths
  • Onion message reply paths for InvoiceRequest and Bolt12Invoice
  • Bolt12Invoice::payment_paths

To support multi-hop blinded paths, we could either

  • trivially use "two" hops using a peer as the other hop, or
  • use more than two by looking at the NetworkGraph
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Multi-hop BlindedPath creation interface jkczyz/rust-lightning
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