Added subscribers filtering in topic broadcasting for taking into account exclude & eligible data

src/Ratchet/Wamp/Topic.php

@@ -32,10 +32,21 @@ class Topic implements \IteratorAggregate, \Countable {
     /**
       * Send a message to all the connections in this topic
       * @param string $msg
+      * @param array $exclude
+      * @param array $eligible
       * @return Topic
       */
-    public function broadcast($msg) {
+    public function broadcast($msg, array $exclude, array $eligible) {
+        $useEligible = count($eligible);
         foreach ($this->subscribers as $client) {
+            if(in_array($client->getSessionId(), $exclude)) {
+                continue;
+            }
+
+            if($useEligible && !in_array($client->getSessionId(), $eligible)) {
+                continue;
+            }
+
             $client->event($this->id, $msg);
         }
 

src/Ratchet/Wamp/WampConnection.php

@@ -99,4 +99,11 @@ class WampConnection extends AbstractConnectionDecorator {
     public function close($opt = null) {
         $this->getConnection()->close($opt);
     }
+
+	/**
+	 * Get session ID
+	 */
+	public function getSessionId() {
+		return $this->WAMP->sessionId;
+	}
 }