uaCap:Robustness Core

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  • Handle error conditions including violations of resource limits and return status information as specified.
  • Recover from communication failures.
  • Limit the number of client connections, subscriptions and service calls as appropriate for the target platform.
  • Use continuation points if a request cannot be fully answered with a single response.
  • Maintain lifetime of Sessions and Subscriptions based on their configured timer and independent from transport connections.
  • Auto-close the Session based on session timeout and client inactivity.


  • Handle connection failures and perform automatic reconnects.
  • Check and handle all failure codes in service responses.
  • Periodically send requests to keep session alive and verify the server is still alive.