Hello,
There are no such requests for the PullStream API, however, since the lazy pull functionality is very much similar to the pullStream API command minus the localstreamname and keepAlive parameters, you can explore other parameters of PullStream API too.
In your case, I can think of the rangeStart and rangeEnd parameters of pullStream as seen from the pullStream API in this documentation. You can try exploring those 2 parameters to see if it can least cover your needs.
https://evostream.com/wordpress/wp-cont … nition.pdf see page 11