monad-raptorcast: switch to round robin ordering

Author: dshulyak

monad-raptorcast/src/packet/assembler.rs

@@ -36,15 +36,15 @@ use crate::{util::Redundancy, SIGNATURE_SIZE};
 pub enum AssembleMode {
     // Compatible with existing build_messages logic, does not support
     // streaming per merkle batch
-    #[default]
+    #[expect(unused)]
     GsoFull,
 
     // Gso concatenated chunks only within a merkle batch.
     #[expect(unused)]
     GsoBestEffort,
 
     // Each recipient gets its own packet in round-robin order.
-    #[expect(unused)]
+    #[default]
     RoundRobin,
 }
 

monad-raptorcast/src/udp.rs

@@ -933,7 +933,6 @@ mod tests {
 
         let mut used_ids: HashMap<SocketAddr, HashSet<_>> = HashMap::new();
 
-        let messages_len = messages.len();
         for (to, mut aggregate_message) in messages {
             while !aggregate_message.is_empty() {
                 let message = aggregate_message.split_to(DEFAULT_SEGMENT_SIZE.into());
@@ -948,7 +947,6 @@ mod tests {
             }
         }
 
-        assert_eq!(used_ids.len(), messages_len);
         let ids = used_ids.values().next().unwrap().clone();
         assert!(used_ids.values().all(|x| x == &ids)); // check that all recipients are sent same ids
         assert!(ids.contains(&0)); // check that starts from idx 0