Luasocket custom headers, 404 turns to 301

Question

My previous question was about fetching page title in lua using the socket.http module. The question lies here. Previously, youtube pages led me to

Answer 1

I believe this line should be changed:

 header = { host= "youtube.com" }

To:

 header = { host= "www.youtube.com" }

After that, works for me.