[Kryonet] SerializationException

Networking & Multiplayer
#1

Ok,
I’ve got a Kryonet server and Kryonet client that runs in a applet (the client is also using jMonkeyEngine, if that makes a difference).

I’m getting this error when trying to connect to the server with Kryonet:

00:00 INFO: Connecting: localhost/127.0.0.1:1345
00:00 ERROR: [kryonet] Error updating connection.
com.esotericsoftware.kryo.SerializationException: Incorrect number of bytes (1 remaining) used to deserialize object: com.esotericsoftware.kryonet.FrameworkMessage$RegisterTCP@1911540
at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:148)
at com.esotericsoftware.kryonet.Client.update(Client.java:254)
at com.esotericsoftware.kryonet.Client.run(Client.java:332)
at java.lang.Thread.run(Unknown Source)
Exception in thread “Client” com.esotericsoftware.kryo.SerializationException: Incorrect number of bytes (1 remaining) used to deserialize object: com.esotericsoftware.kryonet.FrameworkMessage$RegisterTCP@1911540
at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:148)
at com.esotericsoftware.kryonet.Client.update(Client.java:254)
at com.esotericsoftware.kryonet.Client.run(Client.java:332)
at java.lang.Thread.run(Unknown Source)

I’m using the exact same version of Kryonet on both the client and server (1.04, the latest)
Any ideas why it’s doing this? If I have a client inside the server, it connects just fine.

#2

Make sure you are registering your network classes in the same order, on both client and server side.

#3

what kalkitus said, and don’t forget to restart your server after you change anything regarding registering objects on kryo

#4

Anyway I think this was happening to me once because I was modifying classes that were registered on kryo.

For example I have a class A which is registered on the client and server obviously, then I start the server and leave it running. After this I added a field in the class A (an integer or whatever) and I tried to connect the client to server, that’s when I got the error because the client and the server have different versions of A.