Eclipse Community Forums: EMF » [CDO] Connect to example standalone server Server.java

Home » Modeling » EMF » [CDO] Connect to example standalone server Server.java(Unable to connect to standalone server using example client)

Show: Today's Messages :: Show Polls :: Message Navigator

[CDO] Connect to example standalone server Server.java [message #1826741]

Wed, 29 April 2020 17:09

Christoph Mack

Messages: 4
Registered: November 2019

Junior Member

Hi,

I am trying to connect to the standalone example server org.eclipse.emf.cdo.examples/src/org/eclipse/emf/cdo/examples/server/Server.java using the example "Eclipse Application Client 1" launch configuration. The server seems to start up normally, but I can't connect the client to it.
When I start the client and then choose to add a new repository via the "CDO Repositories" view, selecting "Connect to an existing remote repository" and entering the host and port, once I enter the repository name (see attached screenshot) I start to see error messages like the following in the server's log:

[ERROR] Buffer@1[READING_HEADER]: New limit -1 is < 0
java.lang.IllegalArgumentException: Buffer@1[READING_HEADER]: New limit -1 is < 0
    at org.eclipse.internal.net4j.buffer.Buffer.startGetting(Buffer.java:245)
    at org.eclipse.net4j.internal.tcp.TCPConnector.handleRead(TCPConnector.java:221)
    at org.eclipse.net4j.internal.tcp.TCPSelector.handleSelection(TCPSelector.java:265)
    at org.eclipse.net4j.internal.tcp.TCPSelector.run(TCPSelector.java:190)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException
    at java.nio.Buffer.limit(Buffer.java:275)
    at org.eclipse.internal.net4j.buffer.Buffer.startGetting(Buffer.java:239)
    ... 4 more

I can still click 'Finish' and add the repository, but after ten seconds I get a popup with a TimeoutRuntimeException: "Channel registration timeout after 10000 milliseconds".

I'd be grateful for any advice on how to get started with a standalone server.

Thanks,

Christoph

Attachment: client-add-repository.png
(Size: 52.85KB, Downloaded 79 times)
Attachment: timeout-runtime-exception.png
(Size: 56.49KB, Downloaded 77 times)

Report message to a moderator

Re: [CDO] Connect to example standalone server Server.java [message #1826756 is a reply to message #1826741]

Thu, 30 April 2020 05:34

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Just recently I changed the low-level details of the network buffers (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=561532 ). Is it possible that your server and the client use slightly different Net4j versions? What versions do the plugins have on either side?

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Report message to a moderator

Re: [CDO] Connect to example standalone server Server.java [message #1826812 is a reply to message #1826756]

Fri, 01 May 2020 08:26

Christoph Mack

Messages: 4
Registered: November 2019

Junior Member

Hello Eike,

thank you for your quick response. I think you nailed it. I had used org.eclipse.net4j at version 4.10.0 on the client and 4.9.0 on the server. Using 4.10.0 or 4.9.0 on both client and server the connection works just fine.

Thank you very much
Christoph

Report message to a moderator

Re: [CDO] Connect to example standalone server Server.java [message #1826817 is a reply to message #1826812]

Fri, 01 May 2020 09:46

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

I'm glad to hear that it works. The new versions are much more reliable and even perform better.

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Report message to a moderator

Previous Topic:	EMF + Multiple inheritance with Interfaces
Next Topic:	[CDO] Possibility to implement custom (de-)serialization for ObjectType JAVA_OBJECT?

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 25 03:44:29 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter