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Diffstat (limited to 'examples/hello_world.rs')
-rw-r--r-- | examples/hello_world.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/examples/hello_world.rs b/examples/hello_world.rs new file mode 100644 index 00000000..8ff40902 --- /dev/null +++ b/examples/hello_world.rs @@ -0,0 +1,33 @@ +//! 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(()) +} |