Function pamoja_lorawan_relay_send 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_lorawan_relay_send(
    relay: *mut PamojaLorawanRelay,
    port: u8,
    payload: *const u8,
    payload_len: usize,
    confirmed: u8,
    now_us: u64,
    out_frame: *mut *mut PamojaBuffer,
    out_transmission: *mut PamojaLorawanTransmission,
) -> PamojaStatus

Sends one of the relay’s own uplinks, which also carries what it owes its network.

Arguments

• relay - the relay.
• port - the application port, or 0 for a frame with no payload.
• payload - the payload, which may be null when port is 0.
• payload_len - its length.
• confirmed - 1 to ask the network to acknowledge it.
• now_us - the time, in microseconds.
• out_frame - receives the frame to transmit.
• out_transmission - receives where and how to transmit it, and its windows.

Returns

PamojaStatus::Ok on success, with *out_frame set to a buffer the caller must release with pamoja_buffer_free.

Errors

Returns a failing status, with the reason on pamoja_lorawan_relay_error.

Safety

relay must be a live handle, payload must point to payload_len readable bytes when that is non-zero, and the out pointers must be writable.