Answer by martyvis

As Jasper there is nothing particularly unusual or sinister here. There are a couple of things that probably threw you though:-

1. Wireshark tries to convert TCP and UDP ports to the names that were registered for these numbers with the IANA registry. So TCP port 80 became http and TCP port 1140 became autonoc.
2. While http is useful in this case (helping us know the server was probably a web server), autonoc is probably not. When a client establishes a connection to a server it usually chooses a "random" port with a high number (above 1024), called an ephemeral port, for the connection. In this case your client chose 1140. So converting it to autonoc really is incorrect, as it would only make sense if this TCP port was on the server side.
3. The "Dup ACK" is probably just the server wanting to see some more action from the client. The followup action from the client though is the RST (reset), which means it is done with that conversation. So all good and normal TCP.