[news.eclipse.technology.ecf] Re: Problem understand - "Discovery of Rem

[Scott Lewis <slewis@xxxxxxxxxxxxx>]

Hi Neeraj,

This can happen for a number of reasons (i.e. no IDiscoveryService 
instances are found), but a common reason is that no provider bundle is 
available/started.

Could this be the case with your configuration?  i.e. do you have either 
or both of the bundles:

org.eclipse.ecf.provider.jmdns (zeroconf)
org.eclipse.ecf.provider.jslp (slp)

installed in your target platform?  You need at least one of these, 
along with org.eclipse.ecf.discovery to have an IDiscoveryService 
available via the service tracker.

Thanks.  Do let us know if this solves your problem...if not we'll 
attempt to help in other ways.  BTW, you might be interested in the 
slides (available after) from the talk given tomorrow at ESE 2008: 
http://www.eclipsecon.org/summiteurope2008/sessions?id=89.

Thanks,

Scott

Neeraj wrote:
> Hello All,
> I am trying to understand the Discovery of Remote 
> Services(http://wiki.eclipse.org/Discovery_of_Remote_Services) example, 
> but I am facing a problem running the same. Problem mentioned below.
>
> Problem:On running the org.eclipse.ecf.remoteservices.server, the 
> service tracker returns a null value for the discovery service. 
> org.eclipse.core.runtime.AssertionFailedException: null argument:
> at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:86)
> at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:74)
> at 
> org.eclipse.ecf.internal.examples.remoteservices.server.DiscoverableServer.start(DiscoverableServer.java:94) 
>
> at 
> org.eclipse.ecf.internal.examples.remoteservices.server.DiscoverableServer.start(DiscoverableServer.java:112) 
>
> at 
> org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193) 
>
> at 
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) 
>
> at 
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) 
>
> at 
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382) 
>
> at 
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
> at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
> at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
>
> I am using Eclipse Ganymede and the latest ECF plugins.
>
> It would be nice if someone could point me in the right direction.
> Thanks in Advance.
>
> Regards,
> Neeraj Bhusare.