I've tested release 5 on ArcGIS GeoEvent server 10.6.1, and it worked with the sample url.

Then I tried the Dutch realtime feed for public transportation: http://gtfs.ovapi.nl/nl/vehiclePositions.pb
The count on this connector stays 0.

Then I thought it might be some whitelist, proxy issue and tried another gtfs feed: http://rtu.york.ca/gtfsrealtime/VehiclePositions
This one works fine, so I compaired the two and noticed a difference in headers.

response for york.ca:
Content-Type: application/x-google-protobuf
Date: Wed, 09 Oct 2019 09:50:06 GMT
Server: Apache-Coyote/1.1
Transfer-Encoding: chunked

response for ovapi.nl
Content-Encoding: gzip
Date: Wed, 09 Oct 2019 09:40:04 GMT
ETag: "5d9daaf0=80ddb"
Last-Modified: Wed, 09 Oct 2019 09:40:00 GMT
Server: Cherokee/1.2.104 (UNIX)
Transfer-Encoding: chunked
Vary: Accept-Encoding

I cannot see anything in the code that looks at encoding, so I'm assuming the code assumes the content is raw instead of looking at the content-encoding.

Kind Regards,
Casper Span
Tensing - The Netherlands

Struggling to hunt down a compiled build for 10.9.1 Geoevent. Would anyone be able to point me to one?

I have, I assume, successfully installed the program. There is only one jar file, gtfsrealtime-adapter-10.6.0.jar, in the target folder. I have move this to the deploy folder. When I go to add a GTFS Realtime Feed, there are no options for configuration. It's all just blank. See attached image. I'm guessing there should be more jar files? Any help would be great. I am using 10.6.0 for both GeoEvent and my server installed on the same Windows 2012 R2 machine.