[Haggle-arch] Crash problem with more than 2 machines

[Mirco M. <m.m...@cs...>]

Hi all,

I am testing the implementation of CAR with 4 machines and unfortunately 
I discovered that Haggle crashes with more than 2 machines. I have no 
problems in running Haggle with 2 machines.

This is not related to the implementation of the protocol -- I disabled 
it for test the platform.

The problem happens when I disconnect the radio interface of one machine 
to simulate intermittent connectivity.

I follow the instructions that Jing gave me about the fact that you need 
to disable and re-enable the WiFi interface when you start again Haggle 
due to the implementation of the WiFi driver.

So I follow this procedure:

1. I stop Haggle in Eclipse
2. I disable and re-enable the WiFi interface
3. I start again Haggle

And then unfortunately I get the following error:

ResourceManager run thread EXITING due to error 
java.lang.ClassCastException: haggle.connectivity.wifi.AdHocNeighbour @ 
haggle.manager.defaults.DefaultResourceManager.run(DefaultResourceManager.java:240)

java.lang.ClassCastException
haggle.connectivity.wifi.AdHocNeighbour
haggle.connectivity.wifi.WiFiConnectivity.idle(WifiConnectivity.java:244), 
haggle.manager.defaults.DefaultResourceManager.run(DefaultResourceManager.java:228), 
java.lang.Thread.run(Unknown Source)

So it seems that the problem is in the Resource Manager and/or in one 
the class that it relies on.

Do you have any suggestion? Do you have any experience about problems 
with more than 2 machines?

I really appreciate your help and suggestions.

Thanks,
Mirco


-- 
Mirco Musolesi
Dept. of Computer Science, University College London
Gower Street London WC1E 6BT United Kingdom
Phone: +44 20 7679 0391 Fax: +44 20 7387 1397
Web: http://www.cs.ucl.ac.uk/staff/m.musolesi