OptionalchunkPayload bytes per chunk (excluding the frame header).
OptionalhighData-channel bufferedAmount (bytes) at which the sender pauses to apply backpressure.
OptionallowbufferedAmountLowThreshold (bytes) at which the paused sender resumes.
OptionalofferMilliseconds a sender waits for the receiver to accept an offer before the
transfer fails (releasing its open channels). 0 disables the timeout.
OptionalparallelNumber of parallel binary data channels opened per transfer; chunks are striped across them.
Performance knobs shared by the manager and per-send options. All fields fall back to module defaults.