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