lib: add a component connection method

examples/echo_component.rs

@@ -0,0 +1,103 @@
+extern crate futures;
+extern crate tokio_core;
+extern crate tokio_xmpp;
+extern crate jid;
+extern crate minidom;
+extern crate xmpp_parsers;
+extern crate try_from;
+
+use std::env::args;
+use std::process::exit;
+use std::str::FromStr;
+use try_from::TryFrom;
+use tokio_core::reactor::Core;
+use futures::{Future, Stream, Sink, future};
+use tokio_xmpp::Component;
+use minidom::Element;
+use xmpp_parsers::presence::{Presence, Type as PresenceType, Show as PresenceShow};
+use xmpp_parsers::message::{Message, MessageType};
+use jid::Jid;
+
+fn main() {
+    let args: Vec<String> = args().collect();
+    if args.len() < 3 || args.len() > 5 {
+        println!("Usage: {} <jid> <password> [server] [port]", args[0]);
+        exit(1);
+    }
+    let jid = &args[1];
+    let password = &args[2];
+    let server = &args.get(3).unwrap().parse().unwrap_or("127.0.0.1".to_owned());
+    let port: u16 = args.get(4).unwrap().parse().unwrap_or(5347u16);
+
+    // tokio_core context
+    let mut core = Core::new().unwrap();
+    // Component instance
+    println!("{} {} {} {} {:?}", jid, password, server, port, core.handle());
+    let component = Component::new(jid, password, server, port, core.handle()).unwrap();
+
+    // Make the two interfaces for sending and receiving independent
+    // of each other so we can move one into a closure.
+    println!("Got it: {}", component.jid);
+    let (sink, stream) = component.split();
+    // Wrap sink in Option so that we can take() it for the send(self)
+    // to consume and return it back when ready.
+    let mut sink = Some(sink);
+    let mut send = move |stanza| {
+        sink = Some(
+            sink.take().
+                expect("sink")
+                .send(stanza)
+                .wait()
+                .expect("sink.send")
+        );
+    };
+    // Main loop, processes events
+    let done = stream.for_each(|event| {
+        if event.is_online() {
+            println!("Online!");
+
+            let presence = make_presence(Jid::from_str("test@component.linkmauve.fr/coucou").unwrap(), Jid::from_str("linkmauve@linkmauve.fr").unwrap());
+            send(presence);
+        } else if let Some(message) = event.into_stanza()
+            .and_then(|stanza| Message::try_from(stanza).ok())
+        {
+            // This is a message we'll echo
+            match (message.from, message.bodies.get("")) {
+                (Some(from), Some(body)) =>
+                    if message.type_ != MessageType::Error {
+                        let reply = make_reply(from, body);
+                        send(reply);
+                    },
+                _ => (),
+            }
+        }
+
+        Box::new(future::ok(()))
+    });
+
+    // Start polling `done`
+    match core.run(done) {
+        Ok(_) => (),
+        Err(e) => {
+            println!("Fatal: {}", e);
+            ()
+        }
+    }
+}
+
+// Construct a <presence/>
+fn make_presence(from: Jid, to: Jid) -> Element {
+    let mut presence = Presence::new(PresenceType::None);
+    presence.from = Some(from);
+    presence.to = Some(to);
+    presence.show = PresenceShow::Chat;
+    presence.statuses.insert(String::from("en"), String::from("Echoing messages."));
+    presence.into()
+}
+
+// Construct a chat <message/>
+fn make_reply(to: Jid, body: &str) -> Element {
+    let mut message = Message::new(Some(to));
+    message.bodies.insert(String::new(), body.to_owned());
+    message.into()
+}