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author | Carl Lerche <me@carllerche.com> | 2019-11-15 22:11:13 -0800 |
---|---|---|
committer | GitHub <noreply@github.com> | 2019-11-15 22:11:13 -0800 |
commit | 8a7e57786a5dca139f5b4261685e22991ded0859 (patch) | |
tree | b69d1c48f8a760a58fc7ccfe0376d9812a88d303 /examples/udp-codec.rs | |
parent | 930679587ae42e4df3113159ccf33fb5923dd73a (diff) |
Limit `futures` dependency to `Stream` via feature flag (#1774)
In an effort to reach API stability, the `tokio` crate is shedding its
_public_ dependencies on crates that are either a) do not provide a
stable (1.0+) release with longevity guarantees or b) match the `tokio`
release cadence. Of course, implementing `std` traits fits the
requirements.
The on exception, for now, is the `Stream` trait found in `futures_core`.
It is expected that this trait will not change much and be moved into `std.
Since Tokio is not yet going reaching 1.0, I feel that it is acceptable to maintain
a dependency on this trait given how foundational it is.
Since the `Stream` implementation is optional, types that are logically
streams provide `async fn next_*` functions to obtain the next value.
Avoiding the `next()` name prevents fn conflicts with `StreamExt::next()`.
Additionally, some misc cleanup is also done:
- `tokio::io::io` -> `tokio::io::util`.
- `delay` -> `delay_until`.
- `Timeout::new` -> `timeout(...)`.
- `signal::ctrl_c()` returns a future instead of a stream.
- `{tcp,unix}::Incoming` is removed (due to lack of `Stream` trait).
- `time::Throttle` is removed (due to lack of `Stream` trait).
- Fix: `mpsc::UnboundedSender::send(&self)` (no more conflict with `Sink` fns).
Diffstat (limited to 'examples/udp-codec.rs')
-rw-r--r-- | examples/udp-codec.rs | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/examples/udp-codec.rs b/examples/udp-codec.rs index baf64886..0c9dbf76 100644 --- a/examples/udp-codec.rs +++ b/examples/udp-codec.rs @@ -8,9 +8,8 @@ #![warn(rust_2018_idioms)] -use tokio::future::FutureExt as TokioFutureExt; -use tokio::io; use tokio::net::UdpSocket; +use tokio::{io, time}; use tokio_util::codec::BytesCodec; use tokio_util::udp::UdpFramed; @@ -68,7 +67,7 @@ async fn ping(socket: &mut UdpFramed<BytesCodec>, b_addr: SocketAddr) -> Result< async fn pong(socket: &mut UdpFramed<BytesCodec>) -> Result<(), io::Error> { let timeout = Duration::from_millis(200); - while let Ok(Some(Ok((bytes, addr)))) = socket.next().timeout(timeout).await { + while let Ok(Some(Ok((bytes, addr)))) = time::timeout(timeout, socket.next()).await { println!("[b] recv: {}", String::from_utf8_lossy(&bytes)); socket.send((Bytes::from(&b"PONG"[..]), addr)).await?; |