TsgcWSPClient_Presence › Properties › Acknowledgment
Enables per-message acknowledgments for Presence traffic and configures retry behavior.
property Acknowledgment: TsgcWSAckClient_Options read FAcknowledgment write SetAcknowledgment;
—
When Enabled is True, every outbound Subscribe, UnSubscribe, Publish, Invite and member message is tagged with an id and kept in an internal acknowledgment queue until the server confirms delivery. Undelivered messages can be replayed after a reconnect. Leave Enabled as False for fire-and-forget behavior.
oPresence.Acknowledgment.Enabled := True;