Get rid of async-trait

Cargo.lock

@@ -75,17 +75,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "async-trait"
-version = "0.1.81"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e0c28dcc82d7c8ead5cb13beb15405b57b8546e93215673ff8ca0349a028107"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -848,7 +837,6 @@ dependencies = [
 name = "rkvm-net"
 version = "0.1.0"
 dependencies = [
- "async-trait",
  "bincode",
  "hmac",
  "rand",

rkvm-net/Cargo.toml

@@ -11,7 +11,6 @@ rkvm-input = { path = "../rkvm-input" }
 serde = { version = "1.0.117", features = ["derive"] }
 bincode = "1.3.3"
 tokio = { version = "1.0.1", features = ["io-util"] }
-async-trait = "0.1.68"
 thiserror = "1.0.40"
 hmac = "0.12.1"
 sha2 = "0.10.6"

rkvm-net/src/lib.rs

@@ -1,3 +1,6 @@
+// This is not really public API.
+#![allow(async_fn_in_trait)]
+
 pub mod auth;
 pub mod message;
 pub mod version;

rkvm-net/src/message.rs

@@ -4,14 +4,12 @@ use serde::Serialize;
 use std::io::{Error, ErrorKind};
 use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
 
-#[async_trait::async_trait]
 pub trait Message: Sized {
     async fn decode<R: AsyncRead + Send + Unpin>(stream: &mut R) -> Result<Self, Error>;
 
     async fn encode<W: AsyncWrite + Send + Unpin>(&self, stream: &mut W) -> Result<(), Error>;
 }
 
-#[async_trait::async_trait]
 impl<T: DeserializeOwned + Serialize + Sync> Message for T {
     async fn decode<R: AsyncRead + Send + Unpin>(stream: &mut R) -> Result<Self, Error> {
         let length = stream.read_u16().await?;

rkvm-net/src/version.rs

@@ -17,7 +17,6 @@ impl Display for Version {
     }
 }
 
-#[async_trait::async_trait]
 impl Message for Version {
     async fn decode<R: AsyncRead + Send + Unpin>(stream: &mut R) -> Result<Self, Error> {
         stream.read_u16_le().await.map(Self)