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#ifndef LIGHTNING_GOSSIPD_GOSSIP_CONSTANTS_H
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#define LIGHTNING_GOSSIPD_GOSSIP_CONSTANTS_H
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/* BOLT #4:
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*
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* - Length: the maximum route length is limited to 20 hops.
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*...
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* 1. type: `onion_packet`
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* 2. data:
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* * [`1`:`version`]
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* * [`33`:`public_key`]
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* * [`20*65`:`hops_data`]
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*/
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#define ROUTING_MAX_HOPS 20
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/* BOLT #7:
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*
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* The `flags` bitfield...individual bits:
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*...
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* | 0 | `direction` | Direction this update refers to. |
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* | 1 | `disable` | Disable the channel. |
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*/
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#define ROUTING_FLAGS_DIRECTION (1 << 0)
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#define ROUTING_FLAGS_DISABLED (1 << 1)
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/* BOLT #7:
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*
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* The `message_flags` bitfield is used to indicate the presence of optional
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* fields in the `channel_update` message:
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* | Bit Position | Name | Field |
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* | ------------- | ------------------------- | -------------------- |
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* | 0 | `option_channel_htlc_max` | `htlc_maximum_msat` |
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*/
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#define ROUTING_OPT_HTLC_MAX_MSAT (1 << 0)
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/* BOLT #7:
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*
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* - MUST NOT send `announcement_signatures` messages until `funding_locked`
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* has been sent AND the funding transaction has at least six confirmations.
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*/
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#define ANNOUNCE_MIN_DEPTH 6
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/* Utility function that, given a source and a destination, gives us
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* the direction bit the matching channel should get */
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#define get_channel_direction(from, to) (pubkey_cmp(from, to) > 0)
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#endif /* LIGHTNING_GOSSIPD_GOSSIP_CONSTANTS_H */
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