Tvheadend

A question.
if i got to: Configuration -> DVB Inputs -> Network and setup an iptv network, an m3u file from enigma2 box and this url needs authentication, is it possible to convince tvheadend to login with something?
i don't see any field for this.
or will it accept url in the form of:

http://username:pw@hostname/something.m3u ?

using tvheadend: 4.3-1967~geb59284b8