Java – smack 4 throws “sslhandshakeexception: validatorexception: suncertpathbuilderexception” on the connection

For the integration test of my XMPP stack, I set up a vysper server (0.7) on localhost

Question:

Caused by: 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

Since the smack 4 API has changed a lot, the examples found so far can no longer be used Has anyone tried before?

Solution

Sslhandashkeexception tells us that the SSL / TLS handshake failed because a validatorexception tells us "PKIX path construction failed", because suncertpathbuilderexception is thrown, because the Java API "cannot find a valid certificate path" requires the target "

The Java API (that is, this is not done by smack) cannot use the active sslcontext to build a valid certificate chain for server SSL / TLS certificates This is why this exception is thrown You need to provide a valid certificate (but defined by the sslcontext you are currently using) or tell smack to use the sslcontext (connectionconfiguration. Setcustomsslcontext (sslcontext)) that accepts the current server certificate