4a29fbdab2
The src/dest terminology for routing packets is kind of confusing because the source HTLC may not be the source of the packet for settles/fails traversing the circuit in the opposite direction. This changes the nomenclature to incoming/outgoing and always references the HTLCs themselves.
56 lines
1.7 KiB
Go
56 lines
1.7 KiB
Go
package htlcswitch
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import (
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"crypto/sha256"
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"github.com/lightningnetwork/lnd/lnwire"
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)
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// htlcPacket is a wrapper around htlc lnwire update, which adds additional
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// information which is needed by this package.
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type htlcPacket struct {
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// destNode is the first-hop destination of a local created HTLC add
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// message.
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destNode [33]byte
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// payHash is the payment hash of the HTLC which was modified by either
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// a settle or fail action.
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//
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// NOTE: This fields is initialized only in settle and fail packets.
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payHash [sha256.Size]byte
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// incomingChanID is the ID of the channel that we have received an incoming
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// HTLC on.
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incomingChanID lnwire.ShortChannelID
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// outgoingChanID is the ID of the channel that we have offered or will
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// offer an outgoing HTLC on.
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outgoingChanID lnwire.ShortChannelID
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// incomingHTLCID is the ID of the HTLC that we have received from the peer
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// on the incoming channel.
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incomingHTLCID uint64
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// outgoingHTLCID is the ID of the HTLC that we offered to the peer on the
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// outgoing channel.
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outgoingHTLCID uint64
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// amount is the value of the HTLC that is being created or modified.
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amount lnwire.MilliSatoshi
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// htlc lnwire message type of which depends on switch request type.
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htlc lnwire.Message
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// obfuscator contains the necessary state to allow the switch to wrap
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// any forwarded errors in an additional layer of encryption.
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obfuscator ErrorEncrypter
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// isObfuscated is set to true if an error occurs as soon as the switch
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// forwards a packet to the link. If so, and this is an error packet,
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// then this allows the switch to avoid doubly encrypting the error.
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//
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// TODO(andrew.shvv) revisit after refactoring the way of returning
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// errors inside the htlcswitch packet.
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isObfuscated bool
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}
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