I am running Ubuntu 9.10 and I'm attempting to install a plugin for Eclipse 3.5 from a repository that my company created. This worked in the past on this linux box and also works just fine on my laptop which has Windows XP installed.
The exact error message I'm getting in Eclipse is:
Unknown Host: <location of repository>
org.eclipse.equinox.internal.provisional.p2.core.ProvisionException
Any ideas what might be causing something that used to work not to work anymore?
Thanks!
EDIT: Also, it might be useful to know that I can connect to other eclipse plugin repositories fine; it seems that only my company's internal one is the problem.
It is usually due to a proxy used by Eclipse where it shouldn't use it to access a local self-hosted repo.
Try to set the proxy to "Direct" (hence selecting no Proxy entries at all)
Preferences > General > Network Connections,
(so switch from "Native" or "Manual" to "Direct")
Try other link. I got the same error while using link for "Paris, France - Europe". But than I tried with http://emonic.sourceforge.net/updatesite/nchc/site.xml "Tainan, Taiwan - Asia" and all worked just fine.
It's probably this bug: https://bugs.launchpad.net/ubuntu/+source/sun-java6/+bug/486215
Related
This is going to sound like a ridiculous question, but using the SonarLint Eclipse plugin (v3.2.0) on the latest Eclipse (Oxygen), I am unable to add a new SonarQube server connection.
I am working behind a company firewall, but that doesnt appear to be an issue. I am following the steps here and am able to successfully connect to our internal SonarQube instance, provide my credentials, but it is just on the final step, that the 'Finish' button does not seem to do anything, see screen below:
I appreciate there is probably some background processes need to run in order for this Finish to actually finish :) But this doesnt appear to be doing anything...Anyone else experience this issue?
Any before people ask, I've restarted Eclipse/laptop, uninstalled and reinstalled SonarLint plugin etc.
Thanks in advance!
SonarLint in Eclipse are storing credentials in Eclipse secure storage that itself is protected by a master password. So you must reset it or delete it to add a new SonarQube server connection. You can try this step :
In your Eclipse Go to Window > Preferences, filter and find Secure Storage.
In the Tab Contents find and highlight org.sonarlint.eclipse.core, click Delete > Apply > OK. After deletion process is finished, Eclipse will ask if you want to restart the IDE. It is strongly recommended that you restart the IDE and try again to adding SonarQube server in Eclipse.
Thanks.
On my linux machine I had the same issue, because the used master password provider doesn't work properly.
This answer worked for me:
Open Window > Preferences
Go to General > Security > Secure Storage
At Master password providers uncheck the used provider. The enabled provider with the highest priority is the used one [for me it was "Linux Integration (64 bit)"].
Click apply
I also encountered this problem, but was able to work around it.
This is environment in which I was running:
Eclipse Oxygen.1
Linux VM (VirtualBox) on Windows host
Solution that worked for me based on this post:
Uninstall SonarLint.
Reinstall using Help -> Install new software...
On the Install dialog, un-check the option "Show only the latest versions of available software"
Select the older version of SonarLint.
Select Next and continue with the install.
After installing, configure your SonarQube server like normal.
Upgrade to the latest version of SonarLint via Help -> Check for Updates
In my case the problem also concerned the credentials storage but was caused by the Avecto Defendpoint Client. The company restricted the permissions to create subfolders in user home (c:\users<username>). I had to create manually missing subfolders (.sonarlint and .eclipse) after access level elevation and after filling the reason in a text field. Then I had to give the permissions to those folders for myself. Having created them I could proceed with adding server to sonarlint plugin.
I am using Dokuwiki on my pc but suddenly getting this error. Now, i can't see the installed plugins and templates in Extension Manager(Admin). Just getting this error The plugin repository could not be contacted. Make sure your server is allowed to contact www.dokuwiki.org and check your proxy settings. [Retry]
I Installed it using xampp and dokuwiki(from youtube video)
I am using Windows 7 (64 bit).
Please help me regarding these problems, Thanks
Regarding invisible installed plugins. I'm occasionally experiencing the similar issue but had no time to investigate. Try the following steps:
Open Admin -> Extension manager.
Uncheck 'updatable' checkbox.
Switch to 'Installed templates' tab.
Switch back to 'Installed plugins' tab.
If did not help try to play with the state of other checkboxes and switching to another tab and back. Please share your findings afterwards.
Regarding the error message check this question.
If it worked before and now you are experiencing sudden problems then check what was changed in your computer or network settings.
Check proxy settings in Admin -> Configuration Settings -> DokuWiki\Network.
Check if you can access http://www.dokuwiki.org/lib/plugins/pluginrepo/api.php?cmd=ping in your browser to decide whether you need to continue investigation on network or xampp side.
You can always install plugins manually, you aren't going to do it every day.
Upgrading from PHP <=5.6 to 7.0 running Detritus (and later) fixed this behavior.
I have managed to get Eclipse Juno connecting to the internet. For this to accomplish, there are many posts here on stackoverflow. here is one of this links:
Eclipse not connecting to internet via proxy
Today i installed Eclipse Kepler on my Windows7 box. But accessing the eclipse marketplace or installing new software does not work.
I am using exactly the same proxy configuration as i used for Eclipse Juno. Juno can access the marketplace but Kepler does not.
The proxy uses NTLM Authentification.
Any one here with similar problem?
No success til now. I am still wondering why Juno can connect whereas Kepler can not:-(
I had same issue. I searched and found this.
http://oakgreen.blogspot.jp/2011/10/eclipse-proxy-settings-bug-and.html
This post says don't set SOCKS proxy. I tried this advice, and connection was succeeded.
I did below:
Open Network Connection Settings.
Select Active Provider to "Manual".
Set HTTP/HTTPS proxy.
Clear SOCKS proxy if this is set.(select SOCKS proxy row and click "Clear" button)
Restart Eclipse to apply these settings.
I spent hours trying to use this method suggested by mhanada and although it is correct and should have worked the default Secure Storage associated with eclipse was preventing my proxy credentials from being saved. I advise: Be wary of exceptions being thrown regarding Secure Storage. In my case the errors related to being unable to connect to a remote location where the default secure storage path was. In my case I just deleted the Default Secure Storage information via Preferences > General > Security > Secure Storage > Contents > Delete.
In my case I set it to "native" settings where socks was enabled for proxy. (Internet Explorer->Internetoptions->Connections->LAN-Settings->Proxy Settings). After disabling it there and adding the following lines to eclipse.ini everything works well:
-Dorg.eclipse.ecf.provider.filetransfer.excludeContributors=org.eclipse.ecf.provider.filetransfer.httpclient4
-Dorg.eclipse.ecf.provider.filetransfer.retrieve.closeTimeout=3000
-Dorg.eclipse.ecf.provider.filetransfer.retrieve.readTimeout=3000
In my case the problem started after installing the Spring Tool Suite. Uninstalling it solved the problem.
Version: Kepler Service Release 1
A friend of mine ran into that exact problem (fresh machine with a fresh eclipse Kepler installation, the computer was not behind a firewall or proxy.) It turned out to be an issue with Java 7 update 51, when we used a Java 6 JRE to run eclipse the problem was magically solved.
Another note:
After changing my Windows password, eclipse's Windows-integrated secure storage seemed to have become inaccessible without notice. Apparently this not only made eclipse 'forget' my proxy auth settings but also prevented it from storing the credentials after I set them up again. I could configure them any way I wanted but as soon as I clicked "OK" they were gone again.
The solution for me was to go to General > Security > Secure Storage and click on "Change Password..." for the Windows Integration master password provider. Of course, this wiped all passwords previously stored by eclipse, but it left me with a clean, working Secure Storage and allowed me to successfully set up and store the proxy credentials again.
I had faced the same problem , The issue with my set up was I was using JDK, after repointing to JRE it is working perfectly now.
Proxy Setup- Windows->Preferences->General->Network Connections.
Active Provider-Native, Just make sure HTTP - Dynamic should be checked, remaining all should be Unchecked.
Note: Above Description Tried and tested with Kepler only.
It happened to me because eclipse was using JRE and not JDK.
To force eclipse to use a given VM, edit
<eclipse_root>\eclipse.ini
and add those 2 lines at the top of the file:
-vm
C:/Program Files/Java/jdk1.6.0_45/bin/javaw.exe
Note:
Eclipse using JRE was triggering a:
java.lang.NoClassDefFoundError: javax/net/ssl/SSLSocket
java.lang.NoClassDefFoundError: javax/net/ssl/SSLSocket
at org.apache.http.impl.conn.SchemeRegistryFactory.createDefault(SchemeRegistryFactory.java:45)
at org.apache.http.impl.client.AbstractHttpClient.createClientConnectionManager(AbstractHttpClient.java:294)
at org.apache.http.impl.client.AbstractHttpClient.getConnectionManager(AbstractHttpClient.java:445)
at org.apache.http.impl.client.AbstractHttpClient.createHttpContext(AbstractHttpClient.java:274)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:797)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientFileSystemBrowser.runRequest(HttpClientFileSystemBrowser.java:263)
at org.eclipse.ecf.provider.filetransfer.browse.AbstractFileSystemBrowser$DirectoryJob.run(AbstractFileSystemBrowser.java:69)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Caused by: java.lang.ClassNotFoundException: javax.net.ssl.SSLSocket cannot be found by org.apache.httpcomponents.httpclient_4.1.3.v201209201135
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
Did you make sure that you selected the Manual mode in the Active Provider section? Go to the Preferences/General/Network Connections menu again and change that if it is not. I think that part is kind a buggy.
I had this issue, and i changed the proxy settings with password in eclipse.
go to windows-> preferences-> search for "proxy"
open Network connections.
Select Active Provider to Manual.
Set HTTP and HTTPS proxy, system username and password.
(it was not working without username and password in my machine)
Clear SOCKS proxy if its set.
File-> Restart
I'm experiencing some weird problems on using web stuff in Eclipse (Indigo, Indigo SR2 and Juno). My proxy configurations seems to be messed when Eclipse tries to do sth on web.
My browsers stop to communicate and I have to restart my machine in order to restore my Internet access again (or close Eclipse and browser and force the browser to reload proxy configurations). In Eclipse, the communication is unstable, working/not working sometimes.
My "NetWork Connections" are set to Manual, where proxy address, port, auth, user and passord are set to HTTP and HTTPS schemas (I didn't use it for SOCKS due to update issues - see this question).
I have no idea of what is happening and why, and how to fix it. Thanks for helping.
It is very unlikely that Eclipse influences your global settings. If anything outside of Eclipse does not work, should look there for the problem first. Eclipse can either use your system wide settings, or it's own overrides.
I understand your frustration - hard to know what is going wrong.. I really don't see what Eclipse can be doing to cause this though. I can suggest some further troubleshooting steps though.
Can you test the proxy config on any other machine?
Can you browse normally on this machine at other times?
Can you go to the same URL in browser that Eclipse is going to?
Perhaps do you have Eclipse checking all sites for updates (Help > Software) and this is just network slowdown?
When you are experiencing this effect, can you ping outside sites?
I want to install a subversion on my eclipse.
So I went to Help < Install New Software and when I pick the "Galileo - http://download.eclipse.org/releases/galileo" in the "Work with" dropdown, it tells me in the main box "No repository found at http://...".
It is appearing in my available software sites and when I test the connection it returns me an error saying Unknown host.
Can someone please help me, I really need to install that subversion :).
Anna
As mention in this thread, this could be a proxy issue:
I assume you mean you used a web browser to get that - if so, is it
configured to use a web proxy? If your browser is using a proxy then
you need to configure Eclipse to use one too (see the General/Network
Connections preference page).
Since 3.5 Galileo, The Network Connection page has been changed to better show the current proxy configuration.
Now if you go to Preferences > General > Network Connections, you are able to see and change Eclipse proxy settings as well as see settings provided by the operating system.
If you want to use your browser or Gnome settings, or you have your proxy configured using environmental variables on Linux, you can see them all in this new UI
So to set your proxy, you can follow this tutorial (How to configure Proxy Settings in Eclipse)
The severity of the bug is downgraded, since there is a workaround. Open the eclipse.ini file and add the following
-Dorg.eclipse.ecf.provider.filetransfer.excludeContributors=org.eclipse.ecf.provider.filetransfer.httpclient
In a few words the above command says that Eclipse can access the web via the *.pac files of the HTTP clients (eg Internet Explorer or Firefox).
To summarize:
Add the above line at the ini file
ensure that your default system http client (eg Internet Explorer) has proxy settings configured
Go to Eclipse Window->Preferences->Network Connection and enter the proxy setting here as well
It should work with this workaround
I'm not sure which Subversion client you use but neither of them can be installed from the main Galileo site. Follow the instructions on the web page of the Subversion plug-in how to install it.