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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.
34 lines
813 B
Rust
34 lines
813 B
Rust
//! Hello world server.
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//!
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//! A simple client that opens a TCP stream, writes "hello world\n", and closes
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//! the connection.
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//!
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//! You can test this out by running:
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//!
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//! ncat -l 6142
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//!
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//! And then in another terminal run:
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//!
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//! cargo run --example hello_world
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#![warn(rust_2018_idioms)]
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use tokio::io::AsyncWriteExt;
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use tokio::net::TcpStream;
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use std::error::Error;
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#[tokio::main]
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pub async fn main() -> Result<(), Box<dyn Error>> {
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// Open a TCP stream to the socket address.
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//
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// Note that this is the Tokio TcpStream, which is fully async.
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let mut stream = TcpStream::connect("127.0.0.1:6142").await?;
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println!("created stream");
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let result = stream.write(b"hello world\n").await;
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println!("wrote to stream; success={:?}", result.is_ok());
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Ok(())
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}
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