Github user trixpan commented on the pull request:
https://github.com/apache/nifi/pull/233#issuecomment-189735776
@bbende
The protocol is proprietary
https://answers.splunk.com/answers/12543/splunk-data-format.html
so unless they suddenly decided to document it the ListenSplunk will
continue be a ListenTCP (hence my previous comments).
I am quite picky on this one as certain Splunk SE teams seem to have this
culture of demotivating the use of TCP forwarding as an "unfair" use of their
proprietary IP (technically speaking - legal is gray area - you can in fact
use splunk forwarder as a "miNiFi"-like agent and as long you don't send data
into tge indexers your licence will not be consumed).
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