PTL Trader > Suggestions & Feature Requests

Pair trading lab event bus

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Gil Berto:
Hi, i have install PLTRader, on configuration account with access key e secret key the connection failed.
I have this message on log
Unable to subscribe to Pair Trading Lab event bus - connection failed

admin:
Hello,

this is currently a known issue with certain versions of Java. Unfortunately there is no easy fix possible in our application at the moment, we will need to upgrade our infrastructure. We will, but for now the workaround is either to:


* downgrade Java to version older than 1.8.0_231, for instance 1.8.0_221 should work fine
* in Linux / Mac OS you can provide the following option to command line when running the app: -Djdk.tls.namedGroups=secp256k1  (then you can keep your current Java version)

Technical explanation:

The reason is that Java 1.8.0_231 (and other versions) removed some curves used for TLS. Luckily these can be re-enabled by providing extra options to Java in command line: -Djdk.tls.namedGroups=secp256k1

Tested with Oracle Java 1.8.0_231

https://www.oracle.com/technetwork/java/javase/8u231-relnotes-5592812.html

Gil Berto:
I Have installed  1.8.0_221 version, the problem its the same.
I have remove version 1.8.241
I'm using version on WIndows 10

admin:
Ouch...well OK, we will try to upgrade involved part of the infrastructure during this weekend...

Kind regards,
Karel

admin:
The infrastructure has been upgraded. Could you test it now please?

Karel

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