Tomcat can be setup in 2 modes = JSSE (Java) or APR (OpenSSL) If Java, turn Java debug log on and -Djavax.net.debug=ssl
> Sent: Wednesday, May 29, 2019 at 1:57 PM > From: "James H. H. Lampert" <jam...@touchtonecorp.com> > To: "Tomcat Users List" <users@tomcat.apache.org> > Subject: Outbound SSL? > > We have a customer that is running our Tomcat-based webapp, and it is > apparently having trouble accessing a Google web service. > > The error message they're getting is: > > > Unable to find acceptable protocols. isFallback=false, > > modes=[ConnectionSpec(cipherSuites=[TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, > > TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, > > TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, > > TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, > > TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, > > TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, > > TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, > > TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_128_GCM_SHA256, > > TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, > > TLS_RSA_WITH_3DES_EDE_CBC_SHA], tlsVersions=[TLS_1_2, TLS_1_1, > > TLS_1_0], supportsTlsExtensions=true), > > ConnectionSpec(cipherSuites=[TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, > > TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, > > TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, > > TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, > > TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, > > TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, > > TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, > > TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_128_GCM_SHA256, > > TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, > > TLS_RSA_WITH_3DES_EDE_CBC_SHA], tlsVersions=[TLS_1_0], > > supportsTlsExtensions=true), ConnectionSpec()], supported > > protocols=[TLSv1] > > Is this something that could be caused by a Tomcat configuration issue? > > -- > James H. H. Lampert > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
