Callback Object

Interface for ensuring a roundtrip to the client implementation. This interface is identical to ei_callback but is intended for the EIS implementation to enforce a roundtrip to the client.

Note that for a client to receive objects of this type, it must announce support for this interface in ei_handshake.interface_version.



Since Version1 Request Opcode0

Argument Type Summary
callback_data uint64 request-specific data for the callback

Immediately after sending this request, the object is considered destroyed by the EIS implementation. It must no longer be used by the client.

Notify the EIS implementation when the related event is done. Immediately after this request the ei_pingpong object is destroyed by the client and as such must not be used any further.