add simple websocket example

examples/websocket/src/main.rs

@@ -0,0 +1,73 @@
+#![allow(unused_variables)]
+extern crate actix;
+extern crate actix_web;
+
+use actix::*;
+use actix_web::*;
+
+
+struct MyWebSocket;
+
+impl Actor for MyWebSocket {
+    type Context = HttpContext<Self>;
+}
+
+impl Route for MyWebSocket {
+    type State = ();
+
+    fn request(req: HttpRequest, payload: Payload, ctx: &mut HttpContext<Self>) -> Reply<Self>
+    {
+        match ws::handshake(&req) {
+            Ok(resp) => {
+                ctx.start(resp);
+                ctx.add_stream(ws::WsStream::new(payload));
+                Reply::async(MyWebSocket)
+            }
+            Err(err) => {
+                Reply::reply(err)
+            }
+        }
+    }
+}
+
+impl ResponseType<ws::Message> for MyWebSocket {
+    type Item = ();
+    type Error = ();
+}
+
+impl StreamHandler<ws::Message> for MyWebSocket {}
+
+impl Handler<ws::Message> for MyWebSocket {
+    fn handle(&mut self, msg: ws::Message, ctx: &mut HttpContext<Self>)
+              -> Response<Self, ws::Message>
+    {
+        println!("WS: {:?}", msg);
+        match msg {
+            ws::Message::Ping(msg) => ws::WsWriter::pong(ctx, msg),
+            ws::Message::Text(text) => ws::WsWriter::text(ctx, &text),
+            ws::Message::Binary(bin) => ws::WsWriter::binary(ctx, bin),
+            ws::Message::Closed | ws::Message::Error => {
+                ctx.stop();
+            }
+            _ => (),
+        }
+        Self::empty()
+    }
+}
+
+
+fn main() {
+    let sys = actix::System::new("ws-example");
+
+    HttpServer::new(
+        RoutingMap::default()
+            .resource("/ws/", |r| r.get::<MyWebSocket>())
+            .app("/", Application::default()
+                 .route_handler("/", StaticFiles::new("static/", true))
+                 .finish())
+            .finish())
+        .serve::<_, ()>("127.0.0.1:8080").unwrap();
+
+    println!("Started http server: 127.0.0.1:8080");
+    let _ = sys.run();
+}