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Re: [m2e-users] Connection refusal connecting to nexus from eclipse luna, while successful in kepler
No, I was using neither HTTPS nor a proxy authentication. It was an http connection to the corporate nexus.
I went to copy my settings.xml to this thread, but realized that it contained a lot of extra cruft that wasn't used anymore, extra repositories and plugin repositories. So I reverted to the company standard settings.xml for connection to our central nexus repository and this made the problem go away. Strange that the previous configuration would work under Kepler but not Luna. But it's probably better this way. And I'm not enough of a maven-head to possibly devise a test case for whatever condition might have caused this, sorry. 

Thanks for your help.  I have it working now.
.

On 01/18/2016 10:27 AM, Jason van Zyl wrote:

It’s most likely the switch to using the aether-connector-okhttp and it not covering a case for which we have no test. Someone submitted this today:

https://github.com/takari/aether-connector-okhttp/pull/7

You using HTTPS and proxy authentication? Knowing what your developer setup with settings.xml would be useful to see. Or take a look at the test cases in the aether-connector-okhttp code and see if your case is covered. If not see if you can make a test that fails for your case and we’ll try to get it fixed up.


On Jan 18, 2016, at 8:15 AM, Steve Cohen <scohen@xxxxxxxxxxxxxxx> wrote:

I don't see how this could possibly be the issue given my initial description of the problem:  Running from the same workspace on the same machine with Eclipse Kepler does NOT produce the problem, yet running it from Luna DOES produce the problem.

On 01/18/2016 10:08 AM, Matthew Piggott wrote:

Any chance you have a firewall or anti-virus scanner interfering with the connection?

On 18 January 2016 at 10:58, Steve Cohen <scohen@xxxxxxxxxxxxxxx> wrote:
further info:  Switching in Eclipse to use the command line installation of Maven on my system, rather than the Embedded version default also makes the problem go away.  So the question appears to be:
What is wrong with the embedded Maven included in Luna.  The working Kepler version also uses its own embedded Maven, which does not have the problem.


On 01/16/2016 12:08 PM, Steve Cohen wrote:

Okay, that way (command line or Run As Maven - install) these errors do not occur.  But errors shown in Eclipse Luna persist.

On 01/16/2016 11:18 AM, Manfred Moser wrote:

Just try for a full build. That essentially tests the download of dependencies.

So in the project directory run e.g.

mvn clean install -U

And as a next step you can try the same in the IDE with Run As - Maven - install

Steve Cohen wrote on 2016-01-16 08:11:


Please define "it".  I have no idea of what the command line equivalent is of whatever Eclipse is doing during its automatic build.

On 01/15/2016 05:40 PM, Manfred Moser wrote:

Does it work on the command line with -U ?

Steve Cohen wrote on 2016-01-15 15:34:


The same behavior is experienced with NEW Maven projects created with Luna.  They immediately show these errors.  If Luna is closed and Kepler opened on the same workspace, and Maven->Update run, the errors disappear.

On 01/15/2016 05:20 PM, Steve Cohen wrote:

I'd been working with Eclipse Kepler.  I had several Maven projects there.  I connected to Maven Central through a corporate Nexus repository.  Everything worked just fine.

Then I got Eclipse Luna and installed it.  Using the SAME workspace, with the same maven settings.xml that had the settings for the Nexus repository, I find that all Maven projects show errors that cannot be resolved by running Maven->Update.  All mention something about connections being refused by Maven Central.

I closed Eclipse Luna and restarted Kepler on the same workspace.  (I was never running them simultaneously).  The same errors appeared, but now Maven->Update was successful in resolving them.

I closed Kepler and restarted Luna on the same workspace.  Once again, the errors returned, and were not resolvable by Maven->Update.

Here is one of the errors:

CoreException: Could not get the value for parameter compilerId for plugin execution default-compile: PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.1 or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.apache.maven:maven-plugin-api:jar:2.0.9, org.apache.maven:maven-artifact:jar:2.0.9: Failure to transfer org.apache.maven:maven-plugin-api:jar:2.0.9 from http://mavencentral.it.whatever.com:8084/nexus/content/groups/whatever-public-group was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced. Original error: Could not transfer artifact org.apache.maven:maven-plugin-api:jar:2.0.9 from/to nexus (http://mavencentral.it.whatever.com:8084/nexus/content/groups/whatever-public-group): Connection refused: connect

What might the problem be?
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Thanks,

Jason

----------------------------------------------------------
Jason van Zyl
Founder, Takari and Apache Maven
http://twitter.com/jvanzyl
http://twitter.com/takari_io
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