I'm having this issue.

WEB->
          link1->
                 link1
                 link2
          link2->
                 link1
                 link2
          link3->
                 link1
                 link2
          link4->
                 link1
                 link2->
                        link1
                        link2

I want to download all the site, from link4 foward into it. Not link3 or 2
from the beggining...

Heres comes the problem... If I download the full site from there I will
download links like facebook completly and I don't care... I can reject that
link so it won't download it but I can't know all the links that I don't want
to download from the site... and the other problem is if in link4 there is a
link that link to link2 from the start of the site it will download the whole
site and I dont want link2 to be download, again I can't reject to download
that one but, what happens with the links I don't know about them yet?
So in resume I want to download the whole site starting from link4 and all
from in it but not to links outsite the site and not to link that goes
backwards in the site, how can I solve this? Thanks in advance.