While working on MDL-76055 it was detected that the automated testing coverage of that whole MNet subsystem was really poor. Both PHPUnit and Behat.

Because of that, I've created this as a bug, though maybe it only can be an improvement / new feature in practice (continue reading).

So this issue is about to try to cover more there, maybe (why not) using some mock "server/peer" or some other technique allowing us to simulate the requests and responses...

Maybe that will also encourage us to make some changes in codebase, towards better separation of logic and transport... so maybe this is something to consider only of future versions, not for stable ones (some basic tests have been suggested to be added as QA tests so we have the basic functionality manually covered).

Ciao