I have no idea what are those payload_final2_size1 and payload_final2…

…_size2 are.

But it seems that if we set the payload size to a larger value than the frames size,
the trailer packet is also appended to the payload transfer. The trailer is expected
to be a separate transfer though. We set the maximum transfer size to the frame size
(which is effectively equal to the value of payload_final2_size1) - this guarantees
that the trailer will be always received in another separate bulk transfer.

cameleon/src/u3v/stream_handle.rs

@@ -552,9 +552,6 @@ fn read_payload(
         async_pool.submit(&mut buf[cursor..cursor + params.payload_final1_size])?;
         cursor += params.payload_final1_size;
     }
-    if params.payload_final2_size != 0 {
-        async_pool.submit(&mut buf[cursor..cursor + params.payload_final2_size])?;
-    }
 
     Ok(())
 }