Sockudo
Reference

Protocol Reference

WebSocket endpoint and key protocol events.

WebSocket Endpoint

Sockudo serves WebSocket upgrades on:

/app/{appKey}

Pusher-compatible clients usually append:

?protocol=7&client=js&version=<client-version>

Core Events

  • pusher:connection_established
  • pusher:error
  • pusher:ping
  • pusher:pong
  • pusher_internal:subscription_succeeded
  • pusher_internal:member_added
  • pusher_internal:member_removed

Sockudo Extension Events

  • pusher:enable_delta_compression
  • pusher:delta_compression_enabled
  • pusher:delta
  • pusher:delta_cache_sync
  • pusher:delta_sync_error

Subscribe Payload Extensions

Sockudo accepts extra subscription fields in pusher:subscribe data:

  • filter / tags_filter: filter tree for tag filtering.
  • delta: per-subscription delta settings.
Copyright © 2026