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io: bring back split utility (#1521)

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Bring back `split` utility as a free fn instead of a method on
`AsyncRead`. This utility wraps the `stream` in an `Arc` and uses mutual
exclusion to ensure correct access.

Additionally, the specialized `split_mut` fn on TcpStream and UdsStream
is promoted to `split`.
This commit is contained in:
Carl Lerche
2019-08-30 20:46:07 -07:00
committed by GitHub
parent 951827229a
commit 2f91c85ad8
14 changed files with 284 additions and 325 deletions
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tokio-net/tests/tcp_split.rs
+1 -25
View File
@@ -1,25 +1 @@
use tokio_net::tcp::{TcpListener, TcpStream};
#[tokio::test]
async fn split_reunite() -> std::io::Result<()> {
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr()?;
let stream = TcpStream::connect(&addr).await?;
let (r, w) = stream.split();
assert!(r.reunite(w).is_ok());
Ok(())
}
#[tokio::test]
async fn split_reunite_error() -> std::io::Result<()> {
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr()?;
let stream = TcpStream::connect(&addr).await?;
let stream1 = TcpStream::connect(&addr).await?;
let (r, _) = stream.split();
let (_, w) = stream1.split();
assert!(r.reunite(w).is_err());
Ok(())
}
// TODO: write tests using TcpStream::split()