"Data streams v2": the client knows how to receive a single-packet data stream (a stream whose
entire payload is smuggled into the header packet, with no chunk/trailer packets). Senders only
use the single-packet optimization when the recipient advertises at least this protocol.
"Data streams v2": the client knows how to receive a single-packet data stream (a stream whose entire payload is smuggled into the header packet, with no chunk/trailer packets). Senders only use the single-packet optimization when the recipient advertises at least this protocol.