address PR comments:

* chagne the comment
* remove allow async_fn_in_trait since there is no async fun
* move import above child module

Author: boquan-fang

dc/s2n-quic-dc/src/stream/client/tokio.rs

@@ -276,14 +276,20 @@ impl Builder {
     /// Sets the send buffer for the OS socket handle.
     ///
     /// See `SO_SNDBUF` for more information.
+    ///
+    /// Note that this only applies to sockets that are created by s2n-quic-dc. Any sockets
+    /// provided by the application will not inherit this value.
     pub fn with_send_buffer(mut self, bytes: usize) -> Self {
         self.send_buffer = Some(bytes);
         self
     }
 
     /// Sets the recv buffer for the OS socket handle.
     ///
-    /// See `SO_RCVBUF` for more information..
+    /// See `SO_RCVBUF` for more information.
+    ///
+    /// Note that this only applies to sockets that are created by s2n-quic-dc. Any sockets
+    /// provided by the application will not inherit this value.
     pub fn with_recv_buffer(mut self, bytes: usize) -> Self {
         self.recv_buffer = Some(bytes);
         self

dc/s2n-quic-dc/src/stream/server/tokio.rs

@@ -1,9 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-pub mod tcp;
-pub mod udp;
-
 use crate::{
     event,
     path::secret,
@@ -25,8 +22,10 @@ use std::{io, net::SocketAddr, time::Duration};
 use tokio::io::unix::AsyncFd;
 use tracing::{trace, Instrument as _};
 
+pub mod tcp;
+pub mod udp;
+
 // This trait is a temporary solution to abstract local_addr() method until we implement the handshake provider
-#[allow(async_fn_in_trait)]
 pub trait Handshake: AsRef<secret::Map> + Clone {
     fn local_addr(&self) -> SocketAddr;
 }