BufferOverflowException

[nancy debruyne]

Hello all,

Having some problems with sending an packet (with an int).

This is my code: http://pastebin.com/UkRSK2zc
The problem is at line 12, where I'm getting following exception:

Exception in thread "Server" java.nio.BufferOverflowException
    at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:183)
    at com.esotericsoftware.kryo.io.ByteBufferOutputStream.write(ByteBufferOutputStream.java:42)
    at com.esotericsoftware.kryo.io.Output.flush(Output.java:154)
    at com.esotericsoftware.kryonet.KryoSerialization.write(KryoSerialization.java:51)
    at com.esotericsoftware.kryonet.TcpConnection.send(TcpConnection.java:192)
    at com.esotericsoftware.kryonet.Connection.sendTCP(Connection.java:59)
    at x.ServerHandler.sendTileData(ServerHandler.java:71)
    at x.ServerHandler.received(ServerHandler.java:33)
    at com.esotericsoftware.kryonet.Server$1.received(Server.java:61)
    at com.esotericsoftware.kryonet.Connection.notifyReceived(Connection.java:246)
    at com.esotericsoftware.kryonet.Server.update(Server.java:208)
    at com.esotericsoftware.kryonet.Server.run(Server.java:356)
    at java.lang.Thread.run(Thread.java:722)

I'm suspecting there is something going wrong with the x and y values. The buffer overflows are happening when the x value is > 70. I have no idea what is causing this.

The packet that is being sent is just int x, int y, String id.

Hope anyone can help.

Thanks

[Nate]

Turn on Kryo's debug or trace logging and see what is being serialized.

-Nate

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[nancy debruyne]

I tried that, but it is killing my console. And since it only happens after a certain x value, it is quite impossible to see the log when it crashes.
Is there a possibility to output to a file?

Op maandag 9 juni 2014 00:57:34 UTC+2 schreef Nate:

[Nate]

Direct stdout to a file.

[James Hooker]

You should be able to pipe it out to a file using '>'..i.e java -jar server.jar > output.msg 2> output.err. This will output stdout output to 'output.msg', and stderr output to 'output.err' for further inspection.

[nancy debruyne]

Okay, I tried it with the file. For some reason the server doesn't work properly when outputting to a file. Is it possible that it is because I'm sending way too much packets in one time? I'm sending 1024 packets all in once.

[nancy debruyne]

I think the problem is at the amount of packets being send. I decreased the packet size a lot (from 16 * 64 to 16 * 20) and the issue seems gone. I think I probably squeeze all tile data as an array in the chunk data packet. Not sure. I tried that before, but it was giving me errors of packet sizes being too big.