mirror of
https://github.com/tokio-rs/tokio.git
synced 2026-08-07 00:00:09 +02:00
Carl LercheandGitHub
cfc15617a5
Related to #1318, Tokio APIs that are "less stable" are moved into a new `tokio-util` crate. This crate will mirror `tokio` and provide additional APIs that may require a greater rate of breaking changes. As examples require `tokio-util`, they are moved into a separate crate (`examples`). This has the added advantage of being able to avoid example only dependencies in the `tokio` crate.
80 lines
2.0 KiB
Rust
80 lines
2.0 KiB
Rust
use tokio::net::UdpSocket;
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use tokio_util::codec::{Decoder, Encoder};
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use tokio_util::udp::UdpFramed;
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use bytes::{BufMut, BytesMut};
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use futures_util::future::FutureExt;
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use futures_util::sink::SinkExt;
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use futures_util::stream::StreamExt;
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use futures_util::try_future::try_join;
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use std::io;
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#[tokio::test]
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async fn send_framed() -> std::io::Result<()> {
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let mut a_soc = UdpSocket::bind("127.0.0.1:0").await?;
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let mut b_soc = UdpSocket::bind("127.0.0.1:0").await?;
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let a_addr = a_soc.local_addr()?;
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let b_addr = b_soc.local_addr()?;
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// test sending & receiving bytes
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{
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let mut a = UdpFramed::new(a_soc, ByteCodec);
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let mut b = UdpFramed::new(b_soc, ByteCodec);
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let msg = b"4567".to_vec();
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let send = a.send((msg.clone(), b_addr));
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let recv = b.next().map(|e| e.unwrap());
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let (_, received) = try_join(send, recv).await.unwrap();
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let (data, addr) = received;
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assert_eq!(msg, data);
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assert_eq!(a_addr, addr);
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a_soc = a.into_inner();
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b_soc = b.into_inner();
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}
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// test sending & receiving an empty message
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{
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let mut a = UdpFramed::new(a_soc, ByteCodec);
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let mut b = UdpFramed::new(b_soc, ByteCodec);
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let msg = b"".to_vec();
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let send = a.send((msg.clone(), b_addr));
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let recv = b.next().map(|e| e.unwrap());
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let (_, received) = try_join(send, recv).await.unwrap();
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let (data, addr) = received;
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assert_eq!(msg, data);
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assert_eq!(a_addr, addr);
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}
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Ok(())
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}
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pub struct ByteCodec;
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impl Decoder for ByteCodec {
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type Item = Vec<u8>;
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type Error = io::Error;
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fn decode(&mut self, buf: &mut BytesMut) -> Result<Option<Vec<u8>>, io::Error> {
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let len = buf.len();
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Ok(Some(buf.split_to(len).to_vec()))
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}
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}
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impl Encoder for ByteCodec {
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type Item = Vec<u8>;
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type Error = io::Error;
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fn encode(&mut self, data: Vec<u8>, buf: &mut BytesMut) -> Result<(), io::Error> {
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buf.reserve(data.len());
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buf.put(data);
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Ok(())
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}
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}
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