Github user bbende commented on the issue: https://github.com/apache/nifi/pull/1307 Thanks for pointing that out, let me give it a try with minif-cpp and see if I can reproduce. I was hoping that by putting the attributes in AbstractFlowFileServerProtocol it would automatically work since SocketFlowFileServerProtocol extends that, but let me give it a try. I'll let you know what I find out.
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