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FEP-8fcf rests for two weeks after a restore

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What a restore lost of either side is not the other server's to mend: for RestoreRecord.FollowersGrace (14 days)
deliveries carry no Collection-Synchronization header, and a follow only the remote remembers is adopted rather than
undone. Without a restore nothing changes; the interop sweep (gts, mastodon, misskey, sharkey, akkoma, pixelfed,
smithereen, followsync, pins, moves) passed, Smithereen's poll check on a second run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
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thepraandClaude Opus 5.5 committed 2026-10-07 12:16:35 +02:00
1 parent bc5f2beaf7
commit 9ad96f560d
3 files changed
+21 -4
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PrivaPub/Federation/Outbox/DeliveryService.cs
+3 -2
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@@ -188,10 +188,11 @@ namespace PrivaPub.Federation.Outbox
});
}
// FEP-8fcf: what a delivery to the persona's followers tells the receiving server of its followers there
// FEP-8fcf: what a delivery to the persona's followers tells the receiving server of its followers there; nothing for
// a while after a restore, whose losses are not the other server's to mend
static async Task<(string, string)[]> Synchronization(LocalActor signer, string body, Uri inbox, CancellationToken token)
{
if (!FollowersSynchronization.Synchronizes(signer) || JsonNode.Parse(body) is not JsonObject activity || !FollowersSynchronization.ForFollowers(activity, signer))
if (!FollowersSynchronization.Synchronizes(signer) || await Infrastructure.Backup.RestoreRecord.InFollowersGrace(token) || JsonNode.Parse(body) is not JsonObject activity || !FollowersSynchronization.ForFollowers(activity, signer))
return [];
var there = await FollowersSynchronization.On(signer, FollowersSynchronization.Origin(inbox.AbsoluteUri), token);
return [(FollowersSynchronization.Header, FollowersSynchronization.HeaderValue(signer, FollowersSynchronization.Digest(there)))];