initial work on associated stream

still require testing, and fixing a few kinks:
- sending packets > 16k truncate them
- send one more packet than it could at eos
- probably update documentation

/!\ contains breaking changes

1 files changed, 12 insertions, 5 deletions

diff --git a/src/util.rs b/src/util.rs
index f4dfac7..4333080 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,7 +1,10 @@
+use crate::endpoint::SerializeMessage;
+
 use std::net::SocketAddr;
 use std::net::ToSocketAddrs;
+use std::pin::Pin;
 
-use serde::Serialize;
+use futures::Stream;
 
 use log::info;
 
@@ -14,21 +17,25 @@ pub type NodeKey = sodiumoxide::crypto::sign::ed25519::SecretKey;
 /// A network key
 pub type NetworkKey = sodiumoxide::crypto::auth::Key;
 
+pub type AssociatedStream = Pin<Box<dyn Stream<Item = Vec<u8>> + Send>>;
+
 /// Utility function: encodes any serializable value in MessagePack binary format
 /// using the RMP library.
 ///
 /// Field names and variant names are included in the serialization.
 /// This is used internally by the netapp communication protocol.
-pub fn rmp_to_vec_all_named<T>(val: &T) -> Result<Vec<u8>, rmp_serde::encode::Error>
+pub fn rmp_to_vec_all_named<T>(
+	val: &T,
+) -> Result<(Vec<u8>, Option<AssociatedStream>), rmp_serde::encode::Error>
 where
-	T: Serialize + ?Sized,
+	T: SerializeMessage + ?Sized,
 {
 	let mut wr = Vec::with_capacity(128);
 	let mut se = rmp_serde::Serializer::new(&mut wr)
 		.with_struct_map()
 		.with_string_variants();
-	val.serialize(&mut se)?;
-	Ok(wr)
+	let (_, stream) = val.serialize_msg(&mut se)?;
+	Ok((wr, stream))
 }
 
 /// This async function returns only when a true signal was received