Youtube API: Resume Upload *User Authentication Required* - perl

Question

Im very tired, three days without sleep and Im stuck at 1 thing,
this youtube upload thing.
this very simple POST procedure always leads to : "User Authentication Required"
this is what Im emulating:
POST /resumable/feeds/api/users/default/uploads HTTP/1.1
Host: uploads.gdata.youtube.com
Authorization: Bearer ACCESS_TOKEN
GData-Version: 2
X-GData-Key: key=adf15ee97731bca89da876c...a8dc
Content-Length: 0
Slug: my_file.mp4
so far this is what ive done:
#!/usr/bin/perl
use 5.010;
use strict;
use warnings;
use LWP::Simple;
my $r = LWP::UserAgent->new()->post(
"https://uploads.gdata.youtube.com/resumable/feeds/api/users/default/uploads",
Content_Type => "application/atom+xml; charset=UTF-8",
[
'POST /resumable/feeds/api/users/default/uploads HTTP/1.1',
Host => "uploads.gdata.youtube.com",
'Authentication' => "Bearer xxxxxx",
'GData-Version' => "2",
'X-GData-Key' => "key=xxxxx",
Content_Length => "0",
'Slug' => "C:/YouTube.wmv",
]
);
say $r->content;
I tried every Authentication, Oath2, clientLogin,
I can login and get access_token, problem is I can't upload,
I love perl and i hate the fact that there are no support libraries for youtube using perl (there is, but its extremely outdated and direct upload function is not clearly documented or maybe non at all)
please help me, i need this badly and Im really stuck at this, I don't know if the problem is in my part, or youtube's.
Thank you for taking the time to read this, really appreciate it.

Answer 1

Looks to me like you're using the wrong syntax for your call to post().
The documentation isn't really clear, but I think you want something like this:
my $r = LWP::UserAgent->new()->post(
'https://uploads.gdata.youtube.com/resumable/feeds/api/users/default/uploads',
Content_Type => "application/atom+xml; charset=UTF-8",
[
Host => "uploads.gdata.youtube.com",
'Authentication' => "Bearer xxxxxx",
'GData-Version' => "2",
'X-GData-Key' => "key=xxxxx",
Content_Length => "0",
'Slug' => "C:/YouTube.wmv",
]
);
You don't need that line which explicitly calls POST(). The post() method does that does that for you.