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package HTTP::Request::FromTemplate;
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use strict;
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2737
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use HTTP::Request;
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3
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24181
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use Template;
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89528
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102
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use base 'Class::Accessor';
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1468
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3
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10460
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use vars qw($VERSION);
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3
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1444
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9
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$VERSION = '0.03';
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11
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=head1 NAME
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13
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HTTP::Request::FromTemplate - Create HTTP requests from templates
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15
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=head1 SYNOPSIS
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17
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use HTTP::Request::FromTemplate;
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use LWP::UserAgent;
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my $ua = LWP::UserAgent->new();
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# A request, snarfed from your network monitor logs:
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my $template = <
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POST http://[% host %][% path %][% query %] HTTP/1.1
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Host: [% host %]
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Connection: keep-alive
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Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
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Accept-Encoding: gzip,deflate
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Accept-Language: en-us,en;q=0.5
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User-Agent: QuickTime (qtver=5.0.2;os=Windows NT 5.1)
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Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
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Keep-Alive: 300
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Referer: http://[% host %][% path %][% query %]
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35
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TEMPLATE
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my $t = HTTP::Request::FromTemplate->new(template => $template);
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my $req = $t->process({ 'host' => 'apple.com',
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'path' => '/',
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'query' => '?',
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});
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my $response = $ua->request($request); # replay the request
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43
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=head1 ABSTRACT
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I wanted this for a long time already. It makes it very convenient
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to just paste a logged session from the
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L
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into a template file and be able to faithfully replay a request
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or to parametrize it without needing to manually compare what
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is sent against what I want.
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52
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=head1 PREDEFINED TEMPLATE PARAMETERS
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54
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There is one predefined/magic template parameter. C
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will be set to the length of the content (after the template has
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been filled out) unless it was passed in via the template
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parameters.
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59
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=head1 FEEDBACK
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61
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This is one of the modules that I created because the idea hit
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me as crazy but useful. So if you use the module, please tell
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63
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me what enhancements you'd like, or where it falls short
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64
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of your expectations.
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65
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66
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=head1 KNOWN BUGS
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67
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68
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=over 4
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70
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=item * While this module tries to faithfully replicate a HTTP request
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from a template, it uses L. This means that the order
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72
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of the headers will be as L thinks and not as your
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template prescribes.
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75
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=item * Only rudimentary testing has been done.
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77
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=item * The test suite uses L, which uses L. I
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know I will rot in hell for that, but it was so convenient at the time.
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80
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Patches are welcome.
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81
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82
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=back
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84
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=head1 REPORTING BUGS
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86
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If you find bugs, please report them via
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L
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88
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or, preferrably via mail to L.
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90
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=cut
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92
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__PACKAGE__->mk_accessors(qw(template tt));
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our $content_length_cookie = __PACKAGE__ . "_content_length_cookie_";
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94
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95
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sub new {
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96
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3
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3
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1
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8
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my $class = shift;
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97
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3
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7
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my %args;
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98
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3
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50
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13
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if (@_ == 1) {
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0
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0
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$args{template} = $_[0];
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100
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} else {
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3
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14
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%args = @_;
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102
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};
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103
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104
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3
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95
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$args{tt} ||= Template->new(delete $args{config} || {});
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33
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105
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106
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3
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147177
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return $class->SUPER::new(\%args);
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};
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108
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109
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sub process {
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3
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3
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0
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45
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my ($self,$data) = @_;
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112
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3
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28
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my $replace_content_length_cookie;
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3
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if (not exists $data->{content_length}) {
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3
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$data->{content_length} = $content_length_cookie;
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3
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$replace_content_length_cookie = 1;
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};
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118
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3
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$self->tt->process($self->template,$data, \(my $output));
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120
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# This should also set the Content-Length properly.
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3
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50
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166158
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if ($replace_content_length_cookie) {
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3
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157
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if ($output =~ m!^(.*?)(?:\r?\n\r?\n)(.*)\Z!sm) {
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# We have content, so we should set the content length
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3
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13
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my $content_length = length $2;
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3
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9
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my $header_len = length $1;
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3
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64
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substr($output,0,$header_len) =~ s!$content_length_cookie!$content_length!gms;
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};
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128
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};
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129
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130
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# This should also set/have a way for providing the Transfer-Encoding: chunked
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# in a proper fashion
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132
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133
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3
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46
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my $r = HTTP::Request->parse($output); # Wrong! This destroys the order of the headers :-(
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134
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135
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3
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45322
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$r
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136
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};
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137
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138
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1;
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139
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140
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__END__
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