Fixed missed clean session for ClientSession, issue #145

broker/src/main/java/io/moquette/spi/ClientSession.java

@@ -55,7 +55,7 @@ public class ClientSession {
 
     private Set<Subscription> subscriptions = new HashSet<>();
 
-    public final boolean cleanSession;
+    private volatile boolean cleanSession;
 
     private boolean active = false;
 
@@ -146,6 +146,11 @@ public class ClientSession {
         return this.cleanSession;
     }
 
+    public void cleanSession(boolean cleanSession) {
+        this.cleanSession = cleanSession;
+        this.m_sessionsStore.updateCleanStatus(this.clientID, cleanSession);
+    }
+
     public void activate() {
         this.active = true;
     }