How to solve the connection when install aws toolkit on eclipse Neon? - eclipse

Question

I am in a company, and need set proxy to connect to the Internet. The proxy setting is ok, because I can connect to other website, e.g. Neon - http://download.eclipse.org/releases/neon, but not for http://aws.amazon.com/eclipse.
The error message is:
Unable to read repository at
https://aws.amazon.com/eclipse/content.xml. Unable to read repository
at https://aws.amazon.com/eclipse/content.xml.
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target.
The specific stack is:
javax.net.ssl.SSLHandshakeException:
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
at sun.security.ssl.Handshaker.processLoop(Unknown Source)
at sun.security.ssl.Handshaker.process_record(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at org.apache.http.conn.ssl.SSLSocketFactory.createLayeredSocket(SSLSocketFactory.java:554)
at org.apache.http.conn.ssl.SSLSocketFactory.createLayeredSocket(SSLSocketFactory.java:435)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.updateSecureConnection(DefaultClientConnectionOperator.java:216)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.layerProtocol(ManagedClientConnectionImpl.java:394)
at org.apache.http.impl.client.DefaultRequestDirector.establishRoute(DefaultRequestDirector.java:814)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:615)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
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:55)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown
Source)
... 20 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown
Source)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown
Source)
at java.security.cert.CertPathBuilder.build(Unknown Source)
... 26 more

Answer 1

This is because java is not recognizing root certificate authority (CA) SSL certificate of https://aws.amazon.com.
Solution is to add that certificate to java cacerts file so that it got permanently accepted.
Step 1 : Get root certificate of https://aws.amazon.com
CHROME BROWSER
Open https://aws.amazon.com
Select Inspect from context menu(right clicking on page) and navigate to security tab
Click on view certificates
Click on top most certificate on hierarchy and confirm it is tailed with Root CA phrase.
drag and drop that image which you saw written certificate on desktop.
FIREFOX BROWSER
Open https://aws.amazon.com
click on the green lock button "show certificate"
tab "details", "export"
Thats it! you got your root certificate!
Step 2 : Get that certificate added to java cacerts file.
use keytool.exe inside your jre bin folder.
fire following command to place your certificate inside cacerts file
keytool –import –noprompt –trustcacerts –alias ALIASNAME -file
/PATH/TO/YOUR/DESKTOP/CertificateName.cer -keystore
/PATH/TO/YOUR/JDK/jre/lib/security/cacerts -storepass changeit
That is it! you got your problem resolved.
PLEASE NOTE
Do confirm that the jre which is giving you this PKIX error(JRE used by eclipse or your app after deployment) that is where you are performing STEP 2. If you would try with another jre problem would be as it is.

Answer 2

Go to Eclipse -> Window -> Preferences -> Network Settings
Change Active Provider to Direct
Save
Go back to Install Software
Try again to pull from AWS Repo
This time it will work

Answer 3

Just flow the below steps in eclipse,
1) go to windows -> preference - > search for network connections
2) Change the active provider to direct.
Then try install software in eclipse and search for http://aws.amazon.com/eclipse.
It will work.

Answer 4

Try changing the Window/Preferences/Network settings from Native to Direct.
Launch eclipse from CLI using "eclipse.exe -clean"
Retry the update