Need actual byte length for characters

src/main/java/com/github/manevolent/ts3j/protocol/packet/PacketBody2Command.java

@@ -48,6 +48,6 @@ public class PacketBody2Command extends PacketBody {
 
     @Override
     public int getSize() {
-        return text.length();
+        return text.getBytes(Charset.forName("UTF8")).length;
     }
 }

src/test/java/com/github/manevolent/ts3j/ServerConnectionTest.java

@@ -38,7 +38,9 @@ public class ServerConnectionTest  {
                     10000L
             );
 
-            assertEquals(client.getState(), ClientConnectionState.CONNECTED);
+            client.sendServerMessage("\u26D4");
+
+                    assertEquals(client.getState(), ClientConnectionState.CONNECTED);
 
             for (Client c : client.listClients()) {
                 client.getClientInfo(c.getId());