we need more info. I guess you POST data to a site. The easiest way is to use HTTP::Request::Common. 
use HTTP::Request::Common; 
my $request = POST "http://somesite/page", [foo => "bar", name => "fre
+d"]; 
print $request->as_string;

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Boris

In reply to Re: Forcing Content-Length Value in LWP by borisz
in thread Forcing Content-Length Value in LWP by Anonymous Monk

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