Hallo Torsten @tmarkwardt,
Hi … i’m received on my log :
2019-08-15 16:41:29.523 [ERROR] [.internal.engine.KLFCommandProcessor] - Unable to connect to KLF200 host 192.168.1.25 on port 51200. Reason: SSL V2.0 servers are not supported. 2019-08-15 16:41:29.526 [ERROR] [.internal.engine.KLFCommandProcessor] - Unable to setup a connection to the KLF200 unit at 192.168.1.25 on port 51200
why am i getting a SSL V2.0 error?
Has your an idea?
Regards
JDK 1.8.0_211 / 1.8.0_221 on raspberry pi 4 … but with a java version 1.8.0_201 under windows 10 also i have this problem … i think, the problem is the klf-200 on slip communication. current i had downgrade the firmware to 1.0.44 and can test slip and http json access parallely …
thanks for the details. It seems to be a strange issue. I’ve got the same hardware with a linux
Linux home-pi06 4.19.50-v7l+ #895 SMP Thu Jun 20 16:03:42 BST 2019 armv7l GNU/Linux
and no problem regarding the SSL libraries. It might be an issue with the installed packages. Currently with a standard installation procedure of Raspberrian I came to the following list of installed packages:
ca-certificates-java install
java-common install
javascript-common install
libactivation-java install
libaopalliance-java install
libapache-poi-java install
libapache-pom-java install
libargs4j-java install
libasm-java install
libatinject-jsr330-api-java install
libatk-wrapper-java install
libatk-wrapper-java-jni:armhf install
libbase-java install
libbcmail-java install
libbcpkix-java install
libbcprov-java install
libbsh-java install
libcdi-api-java install
libcglib-java install
libcodemodel-java install
libcommons-cli-java install
libcommons-codec-java install
libcommons-collections3-java install
libcommons-collections4-java install
libcommons-compress-java install
libcommons-io-java install
libcommons-lang3-java install
libcommons-logging-java install
libcommons-math3-java install
libcommons-parent-java install
libcurvesapi-java install
libdom4j-java install
libdtd-parser-java install
libehcache-java install
libel-api-java install
libfastinfoset-java install
libflute-java install
libfonts-java install
libformula-java install
libgeronimo-annotation-1.3-spec-java install
libgeronimo-interceptor-3.0-spec-java install
libguava-java install
libguice-java install
libhawtjni-runtime-java install
libhsqldb1.8.0-java install
libhttpclient-java install
libhttpcore-java install
libicu4j-java install
libintellij-annotations-java install
libistack-commons-java install
libitext-java install
libjansi-java install
libjansi-native-java install
libjavascriptcoregtk-4.0-18:armhf install
libjaxb-api-java install
libjaxb-java install
libjaxen-java install
libjcommon-java install
libjdom1-java install
libjetbrains-annotations-java install
libjsoup-java install
libjsp-api-java install
libjsr305-java install
liblayout-java install
libloader-java install
liblog4j1.2-java install
libmail-java install
libmaven-file-management-java install
libmaven-parent-java install
libmaven-resolver-java install
libmaven-shared-io-java install
libmaven-shared-utils-java install
libmaven3-core-java install
libopenjfx-java install
libpentaho-reporting-flow-engine-java install
libpixie-java install
libplexus-archiver-java install
libplexus-cipher-java install
libplexus-classworlds-java install
libplexus-component-annotations-java install
libplexus-interpolation-java install
libplexus-io-java install
libplexus-sec-dispatcher-java install
libplexus-utils2-java install
librelaxng-datatype-java install
libreoffice-java-common install
librepository-java install
librngom-java install
libsac-java install
libsaxonhe-java install
libserializer-java install
libservlet-api-java install
libservlet3.1-java install
libsisu-guice-java install
libsisu-inject-java install
libsisu-ioc-java install
libsisu-plexus-java install
libslf4j-java install
libsnappy-java install
libstax-ex-java install
libstreambuffer-java install
libtxw2-java install
libwagon-http-java install
libwagon-provider-api-java install
libwebsocket-api-java install
libxerces2-java install
libxml-commons-external-java install
libxml-commons-resolver1.1-java install
libxml-java install
libxmlbeans-java install
libxom-java install
libxsom-java install
libxz-java install
libssl1.1:armhf install
openssl install
python-openssl install
python3-openssl install
ssl-cert install
The Java itself looks like (output of java --version):
openjdk 11.0.3 2019-04-16
OpenJDK Runtime Environment (build 11.0.3+7-post-Raspbian-5)
OpenJDK Server VM (build 11.0.3+7-post-Raspbian-5, mixed mode)
with the preinstalled libraries (output of java --list-modules)::
java.base@11.0.3
java.compiler@11.0.3
java.datatransfer@11.0.3
java.desktop@11.0.3
java.instrument@11.0.3
java.logging@11.0.3
java.management@11.0.3
java.management.rmi@11.0.3
java.naming@11.0.3
java.net.http@11.0.3
java.prefs@11.0.3
java.rmi@11.0.3
java.scripting@11.0.3
java.se@11.0.3
java.security.jgss@11.0.3
java.security.sasl@11.0.3
java.smartcardio@11.0.3
java.sql@11.0.3
java.sql.rowset@11.0.3
java.transaction.xa@11.0.3
java.xml@11.0.3
java.xml.crypto@11.0.3
jdk.accessibility@11.0.3
jdk.attach@11.0.3
jdk.charsets@11.0.3
jdk.compiler@11.0.3
jdk.crypto.cryptoki@11.0.3
jdk.crypto.ec@11.0.3
jdk.dynalink@11.0.3
jdk.editpad@11.0.3
jdk.hotspot.agent@11.0.3
jdk.httpserver@11.0.3
jdk.internal.ed@11.0.3
jdk.internal.jvmstat@11.0.3
jdk.internal.le@11.0.3
jdk.internal.opt@11.0.3
jdk.jartool@11.0.3
jdk.javadoc@11.0.3
jdk.jcmd@11.0.3
jdk.jconsole@11.0.3
jdk.jdeps@11.0.3
jdk.jdi@11.0.3
jdk.jdwp.agent@11.0.3
jdk.jfr@11.0.3
jdk.jlink@11.0.3
jdk.jshell@11.0.3
jdk.jsobject@11.0.3
jdk.jstatd@11.0.3
jdk.localedata@11.0.3
jdk.management@11.0.3
jdk.management.agent@11.0.3
jdk.management.jfr@11.0.3
jdk.naming.dns@11.0.3
jdk.naming.rmi@11.0.3
jdk.net@11.0.3
jdk.pack@11.0.3
jdk.rmic@11.0.3
jdk.scripting.nashorn@11.0.3
jdk.scripting.nashorn.shell@11.0.3
jdk.sctp@11.0.3
jdk.security.auth@11.0.3
jdk.security.jgss@11.0.3
jdk.unsupported@11.0.3
jdk.unsupported.desktop@11.0.3
jdk.xml.dom@11.0.3
jdk.zipfs@11.0.3
Could you please check whether there are other libraries on your system preinstalled? Currently I have no clue what’s going wrong 
Best regards,
Guenther