Starts a Pigeon session: one empty upload, best effort — its answer carries
nothing this library reads, and a failed one does not stop the session. The
process records that the session was started, which is what lets the public
flush send its batches; a defect while building the upload starts nothing
and is re-raised.
Starts a Pigeon session: one empty upload, best effort — its answer carries nothing this library reads, and a failed one does not stop the session. The process records that the session was started, which is what lets the public flush send its batches; a defect while building the upload starts nothing and is re-raised.