So does this mean that the content-length header value is no longer used?
I can't tell from the LWP docs if it handles that for you, but you can still set it yourself, for example with my $length = -s $filename; and then adding the appropriate header.

Regarding your code, I read the docs slightly differently: 

    my $request = HTTP::Request->new('POST', $url, $headers);
    $request->protocol('HTTP/1.1');
    my $browser = LWP::UserAgent->new();
    my $response = $browser->request($request, \&sendthis);

[download]
That is, you pass the callback to the LWP->request method, not the HTTP::Request constructor.

In reply to Re^3: sending a large file via http by rhesa
in thread sending a large file via http by mifflin

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