Open several connectable listen servers (probably in different ports) in debugger

Who knows how to do it? Adding “-port=…” to the “listen” option in the Open Level node does not work. Launching a separate process with server is not accepted, because on my computer it lasts near an hour. Are there other solutions?

Bump. The topic is actual.

Double bump.

Triple bump. The topic is actual again!

Quadruple bump.

Quintuple bump. If I am doing something wrong, write it directly, but do not ignore!

Sextuple bump.