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#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
use std::io::Read;
use std::io::Result;
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::net::TcpListener;
use tokio::net::TcpStream;
#[tokio::test]
async fn tcp_into_std() -> Result<()> {
let mut data = [0u8; 12];
let listener = TcpListener::bind("127.0.0.1:0").await?;
let addr = listener.local_addr().unwrap().to_string();
let handle = tokio::spawn(async {
let stream: TcpStream = TcpStream::connect(addr).await.unwrap();
stream
});
let (tokio_tcp_stream, _) = listener.accept().await?;
let mut std_tcp_stream = tokio_tcp_stream.into_std()?;
std_tcp_stream
.set_nonblocking(false)
.expect("set_nonblocking call failed");
let mut client = handle.await.expect("The task being joined has panicked");
client.write_all(b"Hello world!").await?;
std_tcp_stream
.read_exact(&mut data)
.expect("std TcpStream read failed!");
assert_eq!(b"Hello world!", &data);
// test back to tokio stream
std_tcp_stream
.set_nonblocking(true)
.expect("set_nonblocking call failed");
let mut tokio_tcp_stream = TcpStream::from_std(std_tcp_stream)?;
client.write_all(b"Hello tokio!").await?;
let _size = tokio_tcp_stream.read_exact(&mut data).await?;
assert_eq!(b"Hello tokio!", &data);
Ok(())
}
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