tungstenite-rs/examples/server.rs

extern crate tungstenite;

use std::thread::spawn;
use std::net::TcpListener;

use tungstenite::accept;
use tungstenite::handshake::server::Request;

fn main() {
    let server = TcpListener::bind("127.0.0.1:3012").unwrap();
    for stream in server.incoming() {
        spawn(move || {
            let callback = |req: &Request| {
                println!("Received a new ws handshake");
                println!("The request's path is: {}", req.path);
                println!("The request's headers are:");
                for &(ref header, _ /* value */) in req.headers.iter() {
                    println!("* {}", header);
                }

                // Let's add an additional header to our response to the client.
                let extra_headers = vec![
                    (String::from("MyCustomHeader"), String::from(":)")),
                    (String::from("SOME_TUNGSTENITE_HEADER"), String::from("header_value")),
                ];
                Ok(Some(extra_headers))
            };
            let mut websocket = accept(stream.unwrap(), Some(Box::new(callback))).unwrap();

            loop {
                let msg = websocket.read_message().unwrap();
                if msg.is_binary() || msg.is_text() {
                    websocket.write_message(msg).unwrap();
                }
            }
        });
    }
}