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fix(federation): replace DNS hairpin self-POST with direct function call (FED-005)

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Extract processRelayEvents() from the relay HTTP handler and call it
directly in runInitialSyncForNewPeers(), eliminating the HTTP round-trip
through public DNS that failed on networks without hairpin NAT.
This commit is contained in:
Jannis Braun
2026-03-31 05:20:16 +02:00
parent 37fc52d85b
commit 2cac39a460
4 changed files with 88 additions and 99 deletions
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docs/systems/social.md
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@@ -373,8 +373,8 @@ When a new peer is established (`federation_peers.lastSyncedAt = 0`), the federa
**Flow (`federationWorker.ts:runInitialSyncForNewPeers`):**
1. Query all active peers with `lastSyncedAt = 0`
2. **First pass (DM events):** Paginates through `POST /federation/sync` with no `contextType` filter (defaults to DM events), relaying each batch through the local `/api/federation/relay` endpoint
3. **Second pass (friend events):** Paginates through `POST /federation/sync` with `contextType: 'friend'`, same relay-to-self pattern
2. **First pass (DM events):** Paginates through `POST /federation/sync` with no `contextType` filter (defaults to DM events), processing each batch via `processRelayEvents()` directly
3. **Second pass (friend events):** Paginates through `POST /federation/sync` with `contextType: 'friend'`, same direct processing
4. After both passes complete, updates `lastSyncedAt = Date.now()` so the sync doesn't repeat
The sync endpoint (`POST /api/federation/sync`) returns events from the `federation_mutation_log` table, which retains entries for 90 days. This means friend relationships established within the last 90 days are backfilled when a new peer connection is created.