Ahhh... This is a Splunk-specific class. I thought this was supposed to be some generic HTTP POST based mechanism. OK, in this case it might indeed be inserting the proper REST endpoint on its own. Anyway, I'd try debugging by just launching tcpdump/wireshark and verifying if there is any connectivity between your app and your HEC input (and if there is - what is going on there). You use unencrypted HTTP so you should see the traffic
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You're trying do dig out a thread from some 8 years ago. Most probably most of the participants are no longer actively following Answers. Your best bet would be to create a new thread and desciribe your problem there (possibly providing a link to this one if your case is similar.
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