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Subclass from LWP::UserAgent and implement the method progress. Then I think you can do pretty much whatever you want. The following snippet only prints out available response header names, but you can extend it to also print the header values, and for request headers as well.
$ cat lwp-headers.pl #!/usr/bin/perl package MyLWP; use base 'LWP::UserAgent'; sub progress { my($self, $status, $resp) = @_; if ($resp) { my @headers = $resp->header_field_names; print "response headers: @headers\n"; } } package main; my $ua = MyLWP->new; my $url = shift || 'http://gmail.google.com'; my $rp = $ua->get($url); print $rp->status_line, "\n"; $ ./lwp-headers.pl http://www.google.com response headers: Cache-Control Connection Date Location Content-Lengt +h Content-Type Client-Peer Client-Response-Num Set-Cookie Title X-Cac +he X-Cache-Lookup response headers: Cache-Control Connection Date Location Content-Lengt +h Content-Type Client-Date Client-Peer Client-Response-Num Set-Cookie + Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Pe +er Client-Response-Num Set-Cookie Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Pe +er Client-Response-Num Set-Cookie Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Pe +er Client-Response-Num Set-Cookie Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Pe +er Client-Response-Num Set-Cookie Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Pe +er Client-Response-Num Set-Cookie Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Pe +er Client-Response-Num Set-Cookie Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Content-Type Client-Da +te Client-Peer Client-Response-Num Set-Cookie Title X-Cache X-Cache-L +ookup 200 OK $ ./lwp-headers.pl response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Peer Client-Response-Num Title X-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Date Client-Peer Client-Response-Num Title X-Cache X-Ca +che-Lookup response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Peer Client-Response-Num Set-Cookie Title X-Cache X-Cac +he-Lookup response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Date Client-Peer Client-Response-Num Set-Cookie Title X +-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Peer Client-Response-Num Set-Cookie Title X-Cache X-Cac +he-Lookup response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Peer Client-Response-Num Set-Cookie Title X-Cache X-Cac +he-Lookup response headers: Cache-Control Connection Date Pragma Location Conten +t-Type Client-Date Client-Peer Client-Response-Num Set-Cookie Title X +-Cache X-Cache-Lookup response headers: Cache-Control Connection Date Pragma Server Content- +Length Content-Type Client-Peer Client-Response-Num Client-SSL-Cert-I +ssuer Client-SSL-Cert-Subject Client-SSL-Cipher Client-SSL-Warning Se +t-Cookie ..... response headers: Cache-Control Connection Date Pragma Server Content- +Length Content-Type Client-Date Client-Peer Client-Response-Num Clien +t-SSL-Cert-Issuer Client-SSL-Cert-Subject Client-SSL-Cipher Client-SS +L-Warning Set-Cookie Title 200 OK

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In reply to Re: Getting all Headers by naikonta
in thread Getting all Headers by Yappo

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