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BOLT 7: Added flag for optional initial routing sync dump

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Opening a lot of connections results in getting this information a
whole lot of times, so let's add an opt-in flag for the initial dump.
This commit is contained in:
Christian Decker 2017-02-07 17:14:35 +01:00
parent fba22970c6
commit 6dda9560a6
2 changed files with 9 additions and 0 deletions
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8
07-routing-gossip.md
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@ -294,6 +294,14 @@ channels associated with it. Otherwise the receiving node SHOULD
queue the message for rebroadcasting, but MAY choose not to for
messages longer than the minimum expected length.
## Initial Sync
Upon establishing a connection, the two endpoints negotiate whether to perform an initial sync by setting the `initial_routing_sync` flags in the `init` message.
The endpoint SHOULD set the `initial_routing_sync` flag if it requires a full copy of the other endpoint's routing state.
Upon receiving an `init` message with the `initial_routing_sync` flag set the node sends `channel_announcement`s, `channel_update`s and `node_announcement`s for all known channels and nodes as if they were just received.
If the `initial_routing_sync` flag is not set, or initial sync was completed, then the node resumes normal operation, see the _Rebroadcasting_ section for details.
## Rebroadcasting
Nodes receiving a new `channel_announcement` or a `channel_update` or

1
09-features.md
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@ -15,5 +15,6 @@ Flags begin at bit 0 (ie. 0x1), and odd-numbered flags (eg. 0x2) are optional.
| Bits | Name |Description | Link |
|------|------------------|------------------------------------------------|---------------------------------------------------------------------|
| 0/1 | `channel_public` | The sending node wishes to announce the channel | [BOLT #7](07-routing-gossip.md#the-announcement_signatures-message) |
| 2/3 | `initial_routing_sync` | The sending node needs a complete routing information dump | [BOLT #7](07-routing-gossip.md#initial-sync) |
## Assigned `globalfeatures` flags