Cleanup

src/main.rs

@@ -1,4 +1,5 @@
-use rumqttc::{MqttOptions, Client, QoS};
+use rumqttc::{MqttOptions, Client, QoS, LastWill};
+use bytes::Bytes;
 use std::time::Duration;
 use std::thread;
 use std::collections::hash_map::HashMap;
@@ -258,24 +259,26 @@ fn main() {
     let mut callbacks: HashMap<tm::NoticeId, NoticeCallback> = HashMap::new();
     callbacks.insert(tm::NoticeId::NoticeRealtimeScoreChanged, on_score_change);
 
-    // Set client options
     let mut mqttoptions = MqttOptions::new("vex-bridge", "localhost", 1883);
     mqttoptions.set_keep_alive(Duration::from_secs(5));
+    mqttoptions.set_last_will(LastWill{
+        topic: String::from("bridge/status"),
+        message: Bytes::from("{\"online\": false}"),
+        qos: QoS::AtLeastOnce,
+        retain: true,
+    });
 
-    // Create a new client(10 is bounded channel capacity?)
     let (mut client, mut connection) = Client::new(mqttoptions, 10);
-    client.subscribe("bridge", QoS::AtMostOnce).unwrap();
+    client.subscribe("bridge", QoS::AtLeastOnce).unwrap();
+    client.publish("bridge/status", QoS::AtLeastOnce, true, "{\"online\": true}").unwrap();
 
-    client.publish("bridge/status", QoS::AtLeastOnce, false, "{\"status\": true}").unwrap();
-
-    // Create a thread to own connection and handle it's incoming messages
-    let running = true;
     let mqtt_thread = thread::spawn(move ||
         for message in connection.iter() {
             println!("Message = {:?}", message);
         }
     );
 
+    let running = true;
     while running {
         let notice = get_next_notice();
         let callback = callbacks.get(&notice.id());