fix: header encoding silently truncate-casts iproto types

Author: Кирилл Безуглый

CHANGELOG.md

@@ -13,6 +13,8 @@
 
 ### Fixed
 - `network::client::tcp::TcpStream` does not close underlying fd anymore. Now fd will be closed only when the last copy of tcp stream is dropped.
+- `network::protocol::codec::Header::encode` will not truncate to `u8` an
+  `network::protocol::codec::IProtoType` integer from an outside stream at decoding.
 
 ### Deprecated
 - `network::client::tcp::UnsafeSendSyncTcpStream` is now deprected. `network::client::tcp::TcpStream` should be used instead.

tarantool/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "tarantool"
 description = "Tarantool rust bindings"
-version = "6.1.0"
+version = "6.1.1"
 authors = [
     "Dmitriy Koltsov <dkoltsov@picodata.io>",
     "Georgy Moshkin <gmoshkin@picodata.io>",

tarantool/src/network/protocol/codec.rs

@@ -405,7 +405,7 @@ impl Header {
     pub fn encode(&self, stream: &mut impl Write) -> Result<(), Error> {
         rmp::encode::write_map_len(stream, 2)?;
         rmp::encode::write_pfix(stream, REQUEST_TYPE)?;
-        rmp::encode::write_pfix(stream, self.iproto_type as u8)?;
+        rmp::encode::write_uint(stream, self.iproto_type as _)?;
         rmp::encode::write_pfix(stream, SYNC)?;
         rmp::encode::write_uint(stream, self.sync.0)?;
         Ok(())