Telnet connection failed with Failed to parse IBObject. Invalid beginning character of object. ... about arcadia HOT 3 CLOSED

Just to clarify, IIUC, port 3722 is for nrepl whereas port 37220 is for a socket repl (by default).

IIUC, an nrepl connection doesn't typically give you a prompt and it's not the kind of thing one typically manually interacts with. The expected messages are not the sort of thing one would be typing, nor would the results be things one would read as they use bencode. At least I think this is the case in the context of Arcadia and most other Clojure setups.

from arcadia.

Thank You

from arcadia.

The manual has the next example of connection

$ telnet localhost 37220
Trying ::1...
Connected to localhost.
Escape character is '^]'.
user=>

On my PC it looks different

v@win:~$ telnet localhost 3722
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

There is not last line with prompt

from arcadia.