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  Fix directory spider tag loss: size limits and validation

  mleku released this 2025-11-27 13:49:33 +00:00 | 45 commits to main since this release

  • Increase WebSocket message size limit from 500KB to 10MB to prevent
    truncation of large kind 3 follow list events (8000+ follows)
  • Add validation in SaveEvent to reject kind 3 events without p tags
    before storage, preventing malformed events from buggy relays
  • Implement CleanupKind3WithoutPTags() to remove existing malformed
    kind 3 events at startup
  • Add enhanced logging showing tag count and event ID when rejecting
    invalid kind 3 events for better observability
  • Create round-trip test proving binary tag encoding preserves p tags
    correctly through JSON→binary→JSON cycle
  • Root cause: 500KB limit was truncating large follow lists during
    WebSocket receive, causing tags to be lost or incomplete
  • Three-layer defense: prevent at gate (size), validate (save time),
    and cleanup (startup)

  Files modified:

  • app/handle-websocket.go: Increase DefaultMaxMessageSize to 10MB
  • pkg/database/save-event.go: Add kind 3 validation with logging
  • pkg/database/cleanup-kind3.go: New cleanup function
  • pkg/database/cleanup-kind3_test.go: Round-trip test
  • app/main.go: Invoke cleanup at startup

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