Hi!

I think, supports of multiple host components is an important feature. Because database may be connected to master and slaves servers.

https://www.postgresql.org/docs/12/libpq-connect.html#LIBPQ-CONNSTRING

It is possible to specify multiple host components, each with an optional port component, in a single URI. A URI of the form postgresql://host1:port1,host2:port2,host3:port3/ is equivalent to a connection string of the form host=host1,host2,host3 port=port1,port2,port3. Each host will be tried in turn until a connection is successfully established.

In future I'll maybe create a Pull Request, but for now issue should be created as reminder :)