How to get the "Join Game" link from Steam?

Question

Steam

The task is not trivial, in the Steam client there is such a thing as joining games that someone is already playing. If the profile is open, then the link looks like: steam://joinlobby/*game number*/*lobby number*/*profile id*
(example: steam://joinlobby/1234/10977524212345124125/76561194214123124).
But if the profile is closed, then you cannot get this link, although if the person is your friend, you can click on his nickname and the "Join Game" link will be available in the drop-down list, which does the same as the link from the profile. The task is to get this link in text form.