java – Received fatal alert: protocol_version

java – Received fatal alert: protocol_version

On Java 1.8 default TLS protocol is v1.2. On Java 1.6 and 1.7 default is obsoleted TLS1.0. I get this error on Java 1.8, because url use old TLS1.0 (like Your – You see ClientHello, TLSv1). To resolve this error You need to use override defaults for Java 1.8.

System.setProperty(https.protocols, TLSv1);

More info on the Oracle blog:Diagnosing TLS, SSL, and HTTPS.

mariooshs answer seems to on the right track. It didnt work for me.
So I found:

Problems connecting via HTTPS/SSL through own Java client

which uses:

java.lang.System.setProperty(https.protocols, TLSv1,TLSv1.1,TLSv1.2);

Which seems to be necessary with Java 7 and a TLSv1.2 site.

I checked the site with:

openssl s_client -connect


openssl version
OpenSSL 1.0.2l  25 May 2017

and got the result:

   Protocol  : TLSv1.2
   Cipher    : ECDHE-RSA-AES256-GCM-SHA384

Please note that and older openssl version on my mac did not work and I had to use the macports one.

java – Received fatal alert: protocol_version

I ran into this issue while trying to install a PySpark package. I got around the issue by changing the TLS version with an environment variable:

echo export JAVA_TOOL_OPTIONS=-Dhttps.protocols=TLSv1.2 >> ~/.bashrc
source ~/.bashrc

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