JMeter plugin Manager Custom Thread group throwing error message

userbzYl1 0
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I am executing JMeter script from behind company firewall. I had initial issues loading the JMeter Plugin Manager, but I over came it with a line of code (jmeter -Jjpgc.repo.address=http://jmeter-plugins.org/repo/) added to the properties file, provide as a solution in a group thread. Currently, when I choose Custom Thread Group and click on apply changes, I am getting the following error in the logs. Any solution to this is really appreciated.

2022-09-16 12:06:50,587 INFO o.j.r.JARSourceHTTP: Downloading: http://search.maven.org/remotecontent?filepath=net/sf/json-lib/json-lib/2.4/json-lib-2.4-jdk15.jar
2022-09-16 12:06:50,677 ERROR o.j.r.PluginManager: Failed to download json-lib
javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.ssl.Alert.createSSLException(Alert.java:131) ~[?:?]
    at sun.security.ssl.TransportContext.fatal(TransportContext.java:369) ~[?:?]
    at sun.security.ssl.TransportContext.fatal(TransportContext.java:312) ~[?:?]
    at sun.security.ssl.TransportContext.fatal(TransportContext.java:307) ~[?:?]
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:654) ~[?:?]
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(CertificateMessage.java:473) ~[?:?]
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(CertificateMessage.java:369) ~[?:?]
    at sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392) ~[?:?]
    at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:478) ~[?:?]
    at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:456) ~[?:?]
    at sun.security.ssl.TransportContext.dispatch(TransportContext.java:199) ~[?:?]
    at sun.security.ssl.SSLTransport.decode(SSLTransport.java:172) ~[?:?]
    at sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1382) ~[?:?]
    at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1295) ~[?:?]
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:416) ~[?:?]
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:388) ~[?:?]
    at org.apache.http.conn.ssl.SSLSocketFactory.createLayeredSocket(SSLSocketFactory.java:570) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:554) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:415) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:326) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:605) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:440) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.12.jar:4.5.12]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.12.jar:4.5.12]
    at org.jmeterplugins.repository.JARSourceHTTP.execute(JARSourceHTTP.java:499) ~[jmeter-plugins-manager-1.7.jar:?]
    at org.jmeterplugins.repository.JARSourceHTTP.getJAR(JARSourceHTTP.java:389) ~[jmeter-plugins-manager-1.7.jar:?]
    at org.jmeterplugins.repository.PluginManager.applyChanges(PluginManager.java:167) [jmeter-plugins-manager-1.7.jar:?]
    at org.jmeterplugins.repository.PluginManagerDialog$4.run(PluginManagerDialog.java:212) [jmeter-plugins-manager-1.7.jar:?]
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:439) ~[?:?]
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:306) ~[?:?]
    at sun.security.validator.Validator.validate(Validator.java:264) ~[?:?]
    at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:313) ~[?:?]
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:222) ~[?:?]
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129) ~[?:?]
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:638) ~[?:?]
    ... 25 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141) ~[?:?]
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126) ~[?:?]
    at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:297) ~[?:?]
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:434) ~[?:?]
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:306) ~[?:?]
    at sun.security.validator.Validator.validate(Validator.java:264) ~[?:?]
    at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:313) ~[?:?]
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:222) ~[?:?]
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129) ~[?:?]
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:638) ~[?:?]
    ... 25 more
java jmeter
1 Answers

The URL you're trying to access:

http://search.maven.org/remotecontent?filepath=net/sf/json-lib/json-lib/2.4/json-lib-2.4-jdk15.jar

is being translated to this one:

https://repo1.maven.org/maven2/net/sf/json-lib/json-lib/2.4/json-lib-2.4-jdk15.jar

    ^ - ka-boom

It looks like you're being a corporate proxy and your employer is monitoring your HTTPS traffic via MITM certificate

Java detects inconsistency in the certificate chain and doesn't allow JMeter to make HTTPS request having this MITM certificate.

The solution is:

  1. Obtain the certificate (you can get it using even your browser) (it's better to fetch everything from the root, including intermediate CAs and ending up with client certificates if any

  2. Put the certificates into Java Truststore

  3. Make JMeter aware of this Truststore by setting the following system properties:

    javax.net.ssl.trustStore
javax.net.ssl.trustStorePassword

More information: PKIX path building failed: SunCertPathBuilderException: unable to find valid certification path to requested target

Dmitri T0
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