diff options
author | Roman <humbug@deeptown.org> | 2018-02-07 01:41:31 +0400 |
---|---|---|
committer | Carl Lerche <me@carllerche.com> | 2018-02-06 13:41:31 -0800 |
commit | ad8338e4da63f659acce89284381d08a2474f85b (patch) | |
tree | e98a11f5aed7663c88956eb9635747389aae144e /examples/udp-codec.rs | |
parent | 73b763f69fe517fdbbb0360bd9c0a50db8f8f62c (diff) |
Remove UdpCodec (#109)
`UdpFramed` is updated to use the `Encoder` and
`Decoder` traits from `tokio-io`.
Diffstat (limited to 'examples/udp-codec.rs')
-rw-r--r-- | examples/udp-codec.rs | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/examples/udp-codec.rs b/examples/udp-codec.rs index c874ebd7..a2429e49 100644 --- a/examples/udp-codec.rs +++ b/examples/udp-codec.rs @@ -1,40 +1,24 @@ -//! This is a basic example of leveraging `UdpCodec` to create a simple UDP +//! This is a basic example of leveraging `BytesCodec` to create a simple UDP //! client and server which speak a custom protocol. //! -//! Here we're using the a custom codec to convert a UDP socket to a stream of +//! Here we're using the codec from tokio-io to convert a UDP socket to a stream of //! client messages. These messages are then processed and returned back as a //! new message with a new destination. Overall, we then use this to construct a //! "ping pong" pair where two sockets are sending messages back and forth. extern crate tokio; +extern crate tokio_io; extern crate env_logger; extern crate futures; extern crate futures_cpupool; -use std::io; use std::net::SocketAddr; use futures::{Future, Stream, Sink}; use futures::future::Executor; use futures_cpupool::CpuPool; -use tokio::net::{UdpSocket, UdpCodec}; - -pub struct LineCodec; - -impl UdpCodec for LineCodec { - type In = (SocketAddr, Vec<u8>); - type Out = (SocketAddr, Vec<u8>); - type Error = io::Error; - - fn decode(&mut self, addr: &SocketAddr, buf: &[u8]) -> io::Result<Self::In> { - Ok((*addr, buf.to_vec())) - } - - fn encode(&mut self, (addr, buf): Self::Out, into: &mut Vec<u8>) -> io::Result<SocketAddr> { - into.extend(buf); - Ok(addr) - } -} +use tokio::net::UdpSocket; +use tokio_io::codec::BytesCodec; fn main() { drop(env_logger::init()); @@ -50,27 +34,27 @@ fn main() { // We're parsing each socket with the `LineCodec` defined above, and then we // `split` each codec into the sink/stream halves. - let (a_sink, a_stream) = a.framed(LineCodec).split(); - let (b_sink, b_stream) = b.framed(LineCodec).split(); + let (a_sink, a_stream) = a.framed(BytesCodec::new()).split(); + let (b_sink, b_stream) = b.framed(BytesCodec::new()).split(); // Start off by sending a ping from a to b, afterwards we just print out // what they send us and continually send pings // let pings = stream::iter((0..5).map(Ok)); - let a = a_sink.send((b_addr, b"PING".to_vec())).and_then(|a_sink| { + let a = a_sink.send(("PING".into(), b_addr)).and_then(|a_sink| { let mut i = 0; - let a_stream = a_stream.take(4).map(move |(addr, msg)| { + let a_stream = a_stream.take(4).map(move |(msg, addr)| { i += 1; println!("[a] recv: {}", String::from_utf8_lossy(&msg)); - (addr, format!("PING {}", i).into_bytes()) + (format!("PING {}", i).into(), addr) }); a_sink.send_all(a_stream) }); // The second client we have will receive the pings from `a` and then send // back pongs. - let b_stream = b_stream.map(|(addr, msg)| { + let b_stream = b_stream.map(|(msg, addr)| { println!("[b] recv: {}", String::from_utf8_lossy(&msg)); - (addr, b"PONG".to_vec()) + ("PONG".into(), addr) }); let b = b_sink.send_all(b_stream); |