Network Kit and question

I am working on a Twitter client for Haiku (I know - one already exists - but that’s my choice of learning Be API) and I am a little bit confused with missing library on my Haiku r35914 GCC4 installation. To put it simply - I am not able to compile my source files since they started to use classes existing in Network Kit (BNetAddress, BNetEndpoint, etc.). I would appreciate any help - I got stuck because of this.

I think you should ask here

You were right. The answer came in minutes. Thank you for your suggestion.
BTW - classes are in on Haiku now.