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<span class="siteTitle">NYTProf Performance Profile</span>
<span class="siteSubtitle">  <span>« <span class="mode_btn"><a href="HTTP-Headers-pm-block.html">block view</a></span> • <span class="mode_btn mode_btn_selected">line view</span> • <span class="mode_btn"><a href="HTTP-Headers-pm-sub.html">sub view</a></span> »</span><br />
For 01.HTTP.t
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<span class="siteSubtitle">Run on Tue May 4 15:25:55 2010<br />Reported on Tue May 4 15:26:16 2010</span>
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<table>
<tr>
<td class="h" align="right">File</td>
<td align="left">/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Headers.pm</td>
</tr>
<tr>
<td class="h" align="right">Statements Executed</td>
<td align="left">1255</td>
</tr>
<tr>
<td class="h" align="right">Statement Execution Time</td>
<td align="left">4.03ms</td>
</tr>
</table>
<table id="subs_table" border="1" cellpadding="0" class="tablesorter">
<caption>Subroutines — ordered by exclusive time</caption>
<thead>
<tr>
<th>Calls</th>
<th><span title="Number of Places sub is called from">P</span></th>
<th><span title="Number of Files sub is called from">F</span></th>
<th>Exclusive<br />Time</th>
<th>Inclusive<br />Time</th>
<th>Subroutine</th>
</tr>
</thead>
<tbody>
<tr><td class="c0">45</td><td class="c0">5</td><td class="c3">1</td><td class="c0"><span title="0.1%">675µs</span></td><td class="c0"><span title="0.1%">744µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::_header</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#146">_header</a></span></td></tr>
<tr><td class="c0">19</td><td class="c0">5</td><td class="c0">3</td><td class="c0"><span title="0.0%">225µs</span></td><td class="c0"><span title="0.1%">561µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::header</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#76">header</a></span></td></tr>
<tr><td class="c0">15</td><td class="c0">3</td><td class="c1">2</td><td class="c0"><span title="0.0%">165µs</span></td><td class="c0"><span title="0.0%">173µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_type</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#302">content_type</a></span></td></tr>
<tr><td class="c2">8</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">101µs</span></td><td class="c0"><span title="0.0%">361µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::push_header</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#99">push_header</a></span></td></tr>
<tr><td class="c3">3</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">97µs</span></td><td class="c0"><span title="0.0%">226µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::scan</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#218">scan</a></span></td></tr>
<tr><td class="c3">3</td><td class="c3">1</td><td class="c3">1</td><td class="c2"><span title="0.0%">50µs</span></td><td class="c3"><span title="0.0%">53µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::remove_header</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#116">remove_header</a></span></td></tr>
<tr><td class="c3">6</td><td class="c1">2</td><td class="c3">1</td><td class="c3"><span title="0.0%">46µs</span></td><td class="c3"><span title="0.0%">69µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::_sorted_field_names</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#200">_sorted_field_names</a></span></td></tr>
<tr><td class="c3">7</td><td class="c1">2</td><td class="c1">2</td><td class="c3"><span title="0.0%">44µs</span></td><td class="c3"><span title="0.0%">44µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::new</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#67">new</a></span></td></tr>
<tr><td class="c3">6</td><td class="c1">2</td><td class="c1">2</td><td class="c3"><span title="0.0%">41µs</span></td><td class="c2"><span title="0.0%">105µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_is_xhtml</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#352">content_is_xhtml</a></span></td></tr>
<tr><td class="c3">6</td><td class="c1">2</td><td class="c1">2</td><td class="c3"><span title="0.0%">40µs</span></td><td class="c1"><span title="0.0%">144µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::init_header</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#109">init_header</a></span></td></tr>
<tr><td class="c3">3</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">36µs</span></td><td class="c1"><span title="0.0%">126µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_is_html</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#347">content_is_html</a></span></td></tr>
<tr><td class="c0">57</td><td class="c0">3</td><td class="c1">2</td><td class="c3"><span title="0.0%">33µs</span></td><td class="c3"><span title="0.0%">33µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::CORE:match</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_match">CORE:match</a> (opcode)</span></td></tr>
<tr><td class="c0">14</td><td class="c3">1</td><td class="c1">2</td><td class="c3"><span title="0.0%">28µs</span></td><td class="c3"><span title="0.0%">28µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::CORE:substcont</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_substcont">CORE:substcont</a> (opcode)</span></td></tr>
<tr><td class="c3">3</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">27µs</span></td><td class="c3"><span title="0.0%">53µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::header_field_names</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#209">header_field_names</a></span></td></tr>
<tr><td class="c0">16</td><td class="c1">2</td><td class="c1">2</td><td class="c3"><span title="0.0%">24µs</span></td><td class="c3"><span title="0.0%">24µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::CORE:subst</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_subst">CORE:subst</a> (opcode)</span></td></tr>
<tr><td class="c3">6</td><td class="c3">1</td><td class="c1">2</td><td class="c3"><span title="0.0%">23µs</span></td><td class="c3"><span title="0.0%">23µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::CORE:sort</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_sort">CORE:sort</a> (opcode)</span></td></tr>
<tr><td class="c3">3</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">22µs</span></td><td class="c3"><span title="0.0%">66µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_length</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#387">content_length</a></span></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">15µs</span></td><td class="c3"><span title="0.0%">18µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::BEGIN@3</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#3">BEGIN@3</a></span></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">6µs</span></td><td class="c3"><span title="0.0%">44µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::BEGIN@6</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#6">BEGIN@6</a></span></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">3µs</span></td><td class="c3"><span title="0.0%">3µs</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::BEGIN@4</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#4">BEGIN@4</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::__ANON__[:254]</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#243">__ANON__[:254]</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::__ANON__[:266]</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#266">__ANON__[:266]</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::__ANON__[:268]</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#263">__ANON__[:268]</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::_basic_auth</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#404">_basic_auth</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::_date_header</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#273">_date_header</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::as_string</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#238">as_string</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::authorization</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#396">authorization</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::authorization_basic</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#401">authorization_basic</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::clear</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#92">clear</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::client_date</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#293">client_date</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_encoding</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#385">content_encoding</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_is_text</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#342">content_is_text</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_is_xml</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#358">content_is_xml</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_language</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#386">content_language</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::content_type_charset</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#316">content_type_charset</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::date</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#285">date</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::expires</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#286">expires</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::from</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#392">from</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::if_modified_since</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#287">if_modified_since</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::if_unmodified_since</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#288">if_unmodified_since</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::last_modified</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#289">last_modified</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::proxy_authenticate</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#398">proxy_authenticate</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::proxy_authorization</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#399">proxy_authorization</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::proxy_authorization_basic</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#402">proxy_authorization_basic</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::referer</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#366">referer</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::remove_content_headers</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#129">remove_content_headers</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::server</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#390">server</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::title</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#384">title</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::user_agent</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#389">user_agent</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::warning</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#393">warning</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">HTTP::Headers::::www_authenticate</span>HTTP::Headers::<a href="HTTP-Headers-pm-line.html#395">www_authenticate</a></span></td></tr>
</tbody>
</table>
Call graph for these subroutines as a <a href="http://en.wikipedia.org/wiki/Graphviz">Graphviz</a> <a href="usr-local-lib-perl5-site_perl-5-10-1-HTTP-Headers-pm.dot">dot language file</a>.
<table border="1" cellpadding="0">
<thead>
<tr><th>Line</th>
<th><span title="Number of statements executed">State<br />ments</span></th>
<th><span title="Time spend executing statements on the line,
excluding time spent executing statements in any called subroutines">Time<br />on line</span></th>
<th><span title="Number of subroutines calls">Calls</span></th>
<th><span title="Time spent in subroutines called">Time<br />in subs</span></th>
<th class="left_indent_header">Code</th>
</tr>
</thead>
<tbody>
<tr><td class="h"><a name="1"></a>1</td><td></td><td></td><td></td><td></td><td class="s">package HTTP::Headers;</td></tr>
<tr><td class="h"><a name="2"></a>2</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="3"></a>3</td><td class="c3">3</td><td class="c2"><span title="Avg 7µs">21µs</span></td><td class="c3">2</td><td class="c3">21µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 18µs (15+3) within HTTP::Headers::BEGIN@3 which was called
# once (15µs+3µs) by LWP::UserAgent::BEGIN@10 at <a href="HTTP-Headers-pm-line.html#3">line 3</a></div></div>use strict;<div class="calls"><div class="calls_out"># spent 18µs making 1 call to <a href="HTTP-Headers-pm-line.html#3">HTTP::Headers::BEGIN@3</a>
# spent 3µs making 1 call to <a href="strict-pm-line.html#34">strict::import</a></div></div></td></tr>
<tr><td class="h"><a name="4"></a>4</td><td class="c3">3</td><td class="c2"><span title="Avg 7µs">20µs</span></td><td class="c3">1</td><td class="c3">3µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 3µs within HTTP::Headers::BEGIN@4 which was called
# once (3µs+0s) by LWP::UserAgent::BEGIN@10 at <a href="HTTP-Headers-pm-line.html#4">line 4</a></div></div>use Carp ();<div class="calls"><div class="calls_out"># spent 3µs making 1 call to <a href="HTTP-Headers-pm-line.html#4">HTTP::Headers::BEGIN@4</a></div></div></td></tr>
<tr><td class="h"><a name="5"></a>5</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="6"></a>6</td><td class="c3">3</td><td class="c0"><span title="Avg 694µs">2.08ms</span></td><td class="c3">2</td><td class="c1">82µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 44µs (6+38) within HTTP::Headers::BEGIN@6 which was called
# once (6µs+38µs) by LWP::UserAgent::BEGIN@10 at <a href="HTTP-Headers-pm-line.html#6">line 6</a></div></div>use vars qw($VERSION $TRANSLATE_UNDERSCORE);<div class="calls"><div class="calls_out"># spent 44µs making 1 call to <a href="HTTP-Headers-pm-line.html#6">HTTP::Headers::BEGIN@6</a>
# spent 38µs making 1 call to <a href="vars-pm-line.html#10">vars::import</a></div></div></td></tr>
<tr><td class="h"><a name="7"></a>7</td><td class="c3">1</td><td class="c3"><span title="Avg 700ns">700ns</span></td><td></td><td></td><td class="s">$VERSION = "5.827";</td></tr>
<tr><td class="h"><a name="8"></a>8</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="9"></a>9</td><td></td><td></td><td></td><td></td><td class="s"># The $TRANSLATE_UNDERSCORE variable controls whether '_' can be used</td></tr>
<tr><td class="h"><a name="10"></a>10</td><td></td><td></td><td></td><td></td><td class="s"># as a replacement for '-' in header field names.</td></tr>
<tr><td class="h"><a name="11"></a>11</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td></td><td></td><td class="s">$TRANSLATE_UNDERSCORE = 1 unless defined $TRANSLATE_UNDERSCORE;</td></tr>
<tr><td class="h"><a name="12"></a>12</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="13"></a>13</td><td></td><td></td><td></td><td></td><td class="s"># "Good Practice" order of HTTP message headers:</td></tr>
<tr><td class="h"><a name="14"></a>14</td><td></td><td></td><td></td><td></td><td class="s"># - General-Headers</td></tr>
<tr><td class="h"><a name="15"></a>15</td><td></td><td></td><td></td><td></td><td class="s"># - Request-Headers</td></tr>
<tr><td class="h"><a name="16"></a>16</td><td></td><td></td><td></td><td></td><td class="s"># - Response-Headers</td></tr>
<tr><td class="h"><a name="17"></a>17</td><td></td><td></td><td></td><td></td><td class="s"># - Entity-Headers</td></tr>
<tr><td class="h"><a name="18"></a>18</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="19"></a>19</td><td class="c3">1</td><td class="c3"><span title="Avg 2µs">2µs</span></td><td></td><td></td><td class="s">my @general_headers = qw(</td></tr>
<tr><td class="h"><a name="20"></a>20</td><td></td><td></td><td></td><td></td><td class="s"> Cache-Control Connection Date Pragma Trailer Transfer-Encoding Upgrade</td></tr>
<tr><td class="h"><a name="21"></a>21</td><td></td><td></td><td></td><td></td><td class="s"> Via Warning</td></tr>
<tr><td class="h"><a name="22"></a>22</td><td></td><td></td><td></td><td></td><td class="s">);</td></tr>
<tr><td class="h"><a name="23"></a>23</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="24"></a>24</td><td class="c3">1</td><td class="c3"><span title="Avg 3µs">3µs</span></td><td></td><td></td><td class="s">my @request_headers = qw(</td></tr>
<tr><td class="h"><a name="25"></a>25</td><td></td><td></td><td></td><td></td><td class="s"> Accept Accept-Charset Accept-Encoding Accept-Language</td></tr>
<tr><td class="h"><a name="26"></a>26</td><td></td><td></td><td></td><td></td><td class="s"> Authorization Expect From Host</td></tr>
<tr><td class="h"><a name="27"></a>27</td><td></td><td></td><td></td><td></td><td class="s"> If-Match If-Modified-Since If-None-Match If-Range If-Unmodified-Since</td></tr>
<tr><td class="h"><a name="28"></a>28</td><td></td><td></td><td></td><td></td><td class="s"> Max-Forwards Proxy-Authorization Range Referer TE User-Agent</td></tr>
<tr><td class="h"><a name="29"></a>29</td><td></td><td></td><td></td><td></td><td class="s">);</td></tr>
<tr><td class="h"><a name="30"></a>30</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="31"></a>31</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">my @response_headers = qw(</td></tr>
<tr><td class="h"><a name="32"></a>32</td><td></td><td></td><td></td><td></td><td class="s"> Accept-Ranges Age ETag Location Proxy-Authenticate Retry-After Server</td></tr>
<tr><td class="h"><a name="33"></a>33</td><td></td><td></td><td></td><td></td><td class="s"> Vary WWW-Authenticate</td></tr>
<tr><td class="h"><a name="34"></a>34</td><td></td><td></td><td></td><td></td><td class="s">);</td></tr>
<tr><td class="h"><a name="35"></a>35</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="36"></a>36</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">my @entity_headers = qw(</td></tr>
<tr><td class="h"><a name="37"></a>37</td><td></td><td></td><td></td><td></td><td class="s"> Allow Content-Encoding Content-Language Content-Length Content-Location</td></tr>
<tr><td class="h"><a name="38"></a>38</td><td></td><td></td><td></td><td></td><td class="s"> Content-MD5 Content-Range Content-Type Expires Last-Modified</td></tr>
<tr><td class="h"><a name="39"></a>39</td><td></td><td></td><td></td><td></td><td class="s">);</td></tr>
<tr><td class="h"><a name="40"></a>40</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="41"></a>41</td><td class="c3">1</td><td class="c3"><span title="Avg 12µs">12µs</span></td><td></td><td></td><td class="s">my %entity_header = map { lc($_) => 1 } @entity_headers;</td></tr>
<tr><td class="h"><a name="42"></a>42</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="43"></a>43</td><td class="c3">1</td><td class="c3"><span title="Avg 11µs">11µs</span></td><td></td><td></td><td class="s">my @header_order = (</td></tr>
<tr><td class="h"><a name="44"></a>44</td><td></td><td></td><td></td><td></td><td class="s"> @general_headers,</td></tr>
<tr><td class="h"><a name="45"></a>45</td><td></td><td></td><td></td><td></td><td class="s"> @request_headers,</td></tr>
<tr><td class="h"><a name="46"></a>46</td><td></td><td></td><td></td><td></td><td class="s"> @response_headers,</td></tr>
<tr><td class="h"><a name="47"></a>47</td><td></td><td></td><td></td><td></td><td class="s"> @entity_headers,</td></tr>
<tr><td class="h"><a name="48"></a>48</td><td></td><td></td><td></td><td></td><td class="s">);</td></tr>
<tr><td class="h"><a name="49"></a>49</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="50"></a>50</td><td></td><td></td><td></td><td></td><td class="s"># Make alternative representations of @header_order. This is used</td></tr>
<tr><td class="h"><a name="51"></a>51</td><td></td><td></td><td></td><td></td><td class="s"># for sorting and case matching.</td></tr>
<tr><td class="h"><a name="52"></a>52</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">my %header_order;</td></tr>
<tr><td class="h"><a name="53"></a>53</td><td class="c3">1</td><td class="c3"><span title="Avg 0s">0s</span></td><td></td><td></td><td class="s">my %standard_case;</td></tr>
<tr><td class="h"><a name="54"></a>54</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="55"></a>55</td><td></td><td></td><td></td><td></td><td class="s">{</td></tr>
<tr><td class="h"><a name="56"></a>56</td><td class="c3">2</td><td class="c3"><span title="Avg 500ns">1µs</span></td><td></td><td></td><td class="s"> my $i = 0;</td></tr>
<tr><td class="h"><a name="57"></a>57</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s"> for (@header_order) {</td></tr>
<tr><td class="h"><a name="58"></a>58</td><td class="c0">47</td><td class="c3"><span title="Avg 119ns">6µs</span></td><td></td><td></td><td class="s"> my $lc = lc $_;</td></tr>
<tr><td class="h"><a name="59"></a>59</td><td class="c0">47</td><td class="c2"><span title="Avg 409ns">19µs</span></td><td></td><td></td><td class="s"> $header_order{$lc} = ++$i;</td></tr>
<tr><td class="h"><a name="60"></a>60</td><td class="c0">47</td><td class="c1"><span title="Avg 464ns">22µs</span></td><td></td><td></td><td class="s"> $standard_case{$lc} = $_;</td></tr>
<tr><td class="h"><a name="61"></a>61</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="62"></a>62</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="63"></a>63</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="64"></a>64</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="65"></a>65</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="66"></a>66</td><td></td><td></td><td></td><td></td><td class="s">sub new</td></tr>
<tr><td class="h"><a name="67"></a>67</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 44µs within HTTP::Headers::new which was called 7 times, avg 6µs/call:
# 6 times (35µs+0s) by HTTP::Message::new at <a href="HTTP-Message-pm-line.html#36">line 36 of HTTP/Message.pm</a>, avg 6µs/call
# once (10µs+0s) by LWP::UserAgent::default_headers at <a href="LWP-UserAgent-pm-line.html#643">line 643 of LWP/UserAgent.pm</a></div></div>{</td></tr>
<tr><td class="h"><a name="68"></a>68</td><td class="c3">7</td><td class="c3"><span title="Avg 886ns">6µs</span></td><td></td><td></td><td class="s"> my($class) = shift;</td></tr>
<tr><td class="h"><a name="69"></a>69</td><td class="c3">7</td><td class="c2"><span title="Avg 3µs">20µs</span></td><td></td><td></td><td class="s"> my $self = bless {}, $class;</td></tr>
<tr><td class="h"><a name="70"></a>70</td><td class="c3">7</td><td class="c3"><span title="Avg 443ns">3µs</span></td><td></td><td></td><td class="s"> $self->header(@_) if @_; # set up initial headers</td></tr>
<tr><td class="h"><a name="71"></a>71</td><td class="c3">7</td><td class="c1"><span title="Avg 4µs">28µs</span></td><td></td><td></td><td class="s"> $self;</td></tr>
<tr><td class="h"><a name="72"></a>72</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="73"></a>73</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="74"></a>74</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="75"></a>75</td><td></td><td></td><td></td><td></td><td class="s">sub header</td></tr>
<tr><td class="h"><a name="76"></a>76</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 561µs (225+336) within HTTP::Headers::header which was called 19 times, avg 30µs/call:
# 9 times (122µs+227µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 39µs/call
# 3 times (30µs+34µs) by LWP::UserAgent::prepare_request at <a href="LWP-UserAgent-pm-line.html#217">line 217 of LWP/UserAgent.pm</a>, avg 21µs/call
# 3 times (37µs+25µs) by LWP::Protocol::http::request at <a href="LWP-Protocol-http-pm-line.html#185">line 185 of LWP/Protocol/http.pm</a>, avg 21µs/call
# 3 times (21µs+23µs) by LWP::Protocol::http::request at <a href="LWP-Protocol-http-pm-line.html#203">line 203 of LWP/Protocol/http.pm</a>, avg 15µs/call
# once (15µs+26µs) by LWP::UserAgent::default_header at <a href="LWP-UserAgent-pm-line.html#654">line 654 of LWP/UserAgent.pm</a></div></div>{</td></tr>
<tr><td class="h"><a name="77"></a>77</td><td class="c0">19</td><td class="c3"><span title="Avg 358ns">7µs</span></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="78"></a>78</td><td class="c0">19</td><td class="c3"><span title="Avg 379ns">7µs</span></td><td></td><td></td><td class="s"> Carp::croak('Usage: $h->header($field, ...)') unless @_;</td></tr>
<tr><td class="h"><a name="79"></a>79</td><td class="c0">19</td><td class="c3"><span title="Avg 221ns">4µs</span></td><td></td><td></td><td class="s"> my(@old);</td></tr>
<tr><td class="h"><a name="80"></a>80</td><td class="c0">19</td><td class="c3"><span title="Avg 237ns">4µs</span></td><td></td><td></td><td class="s"> my %seen;</td></tr>
<tr><td class="h"><a name="81"></a>81</td><td class="c0">19</td><td class="c3"><span title="Avg 584ns">11µs</span></td><td></td><td></td><td class="s"> while (@_) {</td></tr>
<tr><td class="h"><a name="82"></a>82</td><td class="c0">19</td><td class="c3"><span title="Avg 416ns">8µs</span></td><td></td><td></td><td class="s"> my $field = shift;</td></tr>
<tr><td class="h"><a name="83"></a>83</td><td class="c0">19</td><td class="c1"><span title="Avg 1µs">28µs</span></td><td></td><td></td><td class="s"> my $op = @_ ? ($seen{lc($field)}++ ? 'PUSH' : 'SET') : 'GET';</td></tr>
<tr><td class="h"><a name="84"></a>84</td><td class="c0">19</td><td class="c0"><span title="Avg 3µs">52µs</span></td><td class="c0">19</td><td class="c0">336µs</td><td class="s"> @old = $self->_header($field, shift, $op);<div class="calls"><div class="calls_out"> # spent 336µs making 19 calls to <a href="HTTP-Headers-pm-line.html#146">HTTP::Headers::_header</a>, avg 18µs/call</div></div></td></tr>
<tr><td class="h"><a name="85"></a>85</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="86"></a>86</td><td class="c0">19</td><td class="c3"><span title="Avg 774ns">15µs</span></td><td></td><td></td><td class="s"> return @old if wantarray;</td></tr>
<tr><td class="h"><a name="87"></a>87</td><td class="c1">16</td><td class="c0"><span title="Avg 4µs">70µs</span></td><td></td><td></td><td class="s"> return $old[0] if @old <= 1;</td></tr>
<tr><td class="h"><a name="88"></a>88</td><td></td><td></td><td></td><td></td><td class="s"> join(", ", @old);</td></tr>
<tr><td class="h"><a name="89"></a>89</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="90"></a>90</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="91"></a>91</td><td></td><td></td><td></td><td></td><td class="s">sub clear</td></tr>
<tr><td class="h"><a name="92"></a>92</td><td></td><td></td><td></td><td></td><td class="s">{</td></tr>
<tr><td class="h"><a name="93"></a>93</td><td></td><td></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="94"></a>94</td><td></td><td></td><td></td><td></td><td class="s"> %$self = ();</td></tr>
<tr><td class="h"><a name="95"></a>95</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="96"></a>96</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="97"></a>97</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="98"></a>98</td><td></td><td></td><td></td><td></td><td class="s">sub push_header</td></tr>
<tr><td class="h"><a name="99"></a>99</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 361µs (101+261) within HTTP::Headers::push_header which was called 8 times, avg 45µs/call:
# 8 times (101µs+261µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 45µs/call</div></div>{</td></tr>
<tr><td class="h"><a name="100"></a>100</td><td class="c3">8</td><td class="c3"><span title="Avg 400ns">3µs</span></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="101"></a>101</td><td class="c3">8</td><td class="c1"><span title="Avg 3µs">27µs</span></td><td class="c3">5</td><td class="c1">110µs</td><td class="s"> return $self->_header(@_, 'PUSH_H') if @_ == 2;<div class="calls"><div class="calls_out"> # spent 110µs making 5 calls to <a href="HTTP-Headers-pm-line.html#146">HTTP::Headers::_header</a>, avg 22µs/call</div></div></td></tr>
<tr><td class="h"><a name="102"></a>102</td><td class="c3">3</td><td class="c3"><span title="Avg 5µs">15µs</span></td><td></td><td></td><td class="s"> while (@_) {</td></tr>
<tr><td class="h"><a name="103"></a>103</td><td class="c2">12</td><td class="c0"><span title="Avg 3µs">35µs</span></td><td class="c0">12</td><td class="c0">152µs</td><td class="s"> $self->_header(splice(@_, 0, 2), 'PUSH_H');<div class="calls"><div class="calls_out"> # spent 152µs making 12 calls to <a href="HTTP-Headers-pm-line.html#146">HTTP::Headers::_header</a>, avg 13µs/call</div></div></td></tr>
<tr><td class="h"><a name="104"></a>104</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="105"></a>105</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="106"></a>106</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="107"></a>107</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="108"></a>108</td><td></td><td></td><td></td><td></td><td class="s">sub init_header</td></tr>
<tr><td class="h"><a name="109"></a>109</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 144µs (40+103) within HTTP::Headers::init_header which was called 6 times, avg 24µs/call:
# 3 times (20µs+61µs) by LWP::Protocol::http::_fixup_header at <a href="LWP-Protocol-http-pm-line.html#98">line 98 of LWP/Protocol/http.pm</a>, avg 27µs/call
# 3 times (20µs+43µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 21µs/call</div></div>{</td></tr>
<tr><td class="h"><a name="110"></a>110</td><td class="c3">6</td><td class="c3"><span title="Avg 1µs">6µs</span></td><td></td><td></td><td class="s"> Carp::croak('Usage: $h->init_header($field, $val)') if @_ != 3;</td></tr>
<tr><td class="h"><a name="111"></a>111</td><td class="c3">6</td><td class="c0"><span title="Avg 5µs">31µs</span></td><td class="c3">6</td><td class="c1">103µs</td><td class="s"> shift->_header(@_, 'INIT');<div class="calls"><div class="calls_out"> # spent 103µs making 6 calls to <a href="HTTP-Headers-pm-line.html#146">HTTP::Headers::_header</a>, avg 17µs/call</div></div></td></tr>
<tr><td class="h"><a name="112"></a>112</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="113"></a>113</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="114"></a>114</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="115"></a>115</td><td></td><td></td><td></td><td></td><td class="s">sub remove_header</td></tr>
<tr><td class="h"><a name="116"></a>116</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 53µs (50+3) within HTTP::Headers::remove_header which was called 3 times, avg 18µs/call:
# 3 times (50µs+3µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 18µs/call</div></div>{</td></tr>
<tr><td class="h"><a name="117"></a>117</td><td class="c3">3</td><td class="c3"><span title="Avg 2µs">6µs</span></td><td></td><td></td><td class="s"> my($self, @fields) = @_;</td></tr>
<tr><td class="h"><a name="118"></a>118</td><td class="c3">3</td><td class="c3"><span title="Avg 267ns">800ns</span></td><td></td><td></td><td class="s"> my $field;</td></tr>
<tr><td class="h"><a name="119"></a>119</td><td class="c3">3</td><td class="c3"><span title="Avg 267ns">800ns</span></td><td></td><td></td><td class="s"> my @values;</td></tr>
<tr><td class="h"><a name="120"></a>120</td><td class="c3">3</td><td class="c3"><span title="Avg 2µs">6µs</span></td><td></td><td></td><td class="s"> foreach $field (@fields) {</td></tr>
<tr><td class="h"><a name="121"></a>121</td><td class="c3">3</td><td class="c3"><span title="Avg 5µs">15µs</span></td><td class="c3">3</td><td class="c3">3µs</td><td class="s"> $field =~ tr/_/-/ if $field !~ /^:/ && $TRANSLATE_UNDERSCORE;<div class="calls"><div class="calls_out"> # spent 3µs making 3 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_match">HTTP::Headers::CORE:match</a>, avg 867ns/call</div></div></td></tr>
<tr><td class="h"><a name="122"></a>122</td><td class="c3">3</td><td class="c3"><span title="Avg 2µs">6µs</span></td><td></td><td></td><td class="s"> my $v = delete $self->{lc $field};</td></tr>
<tr><td class="h"><a name="123"></a>123</td><td class="c3">3</td><td class="c3"><span title="Avg 2µs">7µs</span></td><td></td><td></td><td class="s"> push(@values, ref($v) eq 'ARRAY' ? @$v : $v) if defined $v;</td></tr>
<tr><td class="h"><a name="124"></a>124</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="125"></a>125</td><td class="c3">3</td><td class="c3"><span title="Avg 5µs">15µs</span></td><td></td><td></td><td class="s"> return @values;</td></tr>
<tr><td class="h"><a name="126"></a>126</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="127"></a>127</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="128"></a>128</td><td></td><td></td><td></td><td></td><td class="s">sub remove_content_headers</td></tr>
<tr><td class="h"><a name="129"></a>129</td><td></td><td></td><td></td><td></td><td class="s">{</td></tr>
<tr><td class="h"><a name="130"></a>130</td><td></td><td></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="131"></a>131</td><td></td><td></td><td></td><td></td><td class="s"> unless (defined(wantarray)) {</td></tr>
<tr><td class="h"><a name="132"></a>132</td><td></td><td></td><td></td><td></td><td class="s"> # fast branch that does not create return object</td></tr>
<tr><td class="h"><a name="133"></a>133</td><td></td><td></td><td></td><td></td><td class="s"> delete @$self{grep $entity_header{$_} || /^content-/, keys %$self};</td></tr>
<tr><td class="h"><a name="134"></a>134</td><td></td><td></td><td></td><td></td><td class="s"> return;</td></tr>
<tr><td class="h"><a name="135"></a>135</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="136"></a>136</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="137"></a>137</td><td></td><td></td><td></td><td></td><td class="s"> my $c = ref($self)->new;</td></tr>
<tr><td class="h"><a name="138"></a>138</td><td></td><td></td><td></td><td></td><td class="s"> for my $f (grep $entity_header{$_} || /^content-/, keys %$self) {</td></tr>
<tr><td class="h"><a name="139"></a>139</td><td></td><td></td><td></td><td></td><td class="s"> $c->{$f} = delete $self->{$f};</td></tr>
<tr><td class="h"><a name="140"></a>140</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="141"></a>141</td><td></td><td></td><td></td><td></td><td class="s"> $c;</td></tr>
<tr><td class="h"><a name="142"></a>142</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="143"></a>143</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="144"></a>144</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="145"></a>145</td><td></td><td></td><td></td><td></td><td class="s">sub _header</td></tr>
<tr><td class="h"><a name="146"></a>146</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 744µs (675+69) within HTTP::Headers::_header which was called 45 times, avg 17µs/call:
# 19 times (305µs+31µs) by HTTP::Headers::header at <a href="HTTP-Headers-pm-line.html#84">line 84</a>, avg 18µs/call
# 12 times (145µs+7µs) by HTTP::Headers::push_header at <a href="HTTP-Headers-pm-line.html#103">line 103</a>, avg 13µs/call
# 6 times (100µs+4µs) by HTTP::Headers::init_header at <a href="HTTP-Headers-pm-line.html#111">line 111</a>, avg 17µs/call
# 5 times (84µs+26µs) by HTTP::Headers::push_header at <a href="HTTP-Headers-pm-line.html#101">line 101</a>, avg 22µs/call
# 3 times (42µs+2µs) by HTTP::Headers::content_length at <a href="HTTP-Headers-pm-line.html#387">line 387</a>, avg 15µs/call</div></div>{</td></tr>
<tr><td class="h"><a name="147"></a>147</td><td class="c0">45</td><td class="c0"><span title="Avg 993ns">45µs</span></td><td></td><td></td><td class="s"> my($self, $field, $val, $op) = @_;</td></tr>
<tr><td class="h"><a name="148"></a>148</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="149"></a>149</td><td class="c0">45</td><td class="c0"><span title="Avg 3µs">152µs</span></td><td class="c0">45</td><td class="c3">26µs</td><td class="s"> unless ($field =~ /^:/) {<div class="calls"><div class="calls_out"> # spent 26µs making 45 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_match">HTTP::Headers::CORE:match</a>, avg 589ns/call</div></div></td></tr>
<tr><td class="h"><a name="150"></a>150</td><td class="c0">45</td><td class="c0"><span title="Avg 727ns">33µs</span></td><td></td><td></td><td class="s"> $field =~ tr/_/-/ if $TRANSLATE_UNDERSCORE;</td></tr>
<tr><td class="h"><a name="151"></a>151</td><td class="c0">45</td><td class="c2"><span title="Avg 398ns">18µs</span></td><td></td><td></td><td class="s"> my $old = $field;</td></tr>
<tr><td class="h"><a name="152"></a>152</td><td class="c0">45</td><td class="c2"><span title="Avg 391ns">18µs</span></td><td></td><td></td><td class="s"> $field = lc $field;</td></tr>
<tr><td class="h"><a name="153"></a>153</td><td class="c0">45</td><td class="c0"><span title="Avg 964ns">43µs</span></td><td></td><td></td><td class="s"> unless(defined $standard_case{$field}) {</td></tr>
<tr><td class="h"><a name="154"></a>154</td><td></td><td></td><td></td><td></td><td class="s"> # generate a %standard_case entry for this field</td></tr>
<tr><td class="h"><a name="155"></a>155</td><td class="c3">4</td><td class="c0"><span title="Avg 24µs">96µs</span></td><td class="c0">18</td><td class="c3">43µs</td><td class="s"> $old =~ s/\b(\w)/\u$1/g;<div class="calls"><div class="calls_out"> # spent 28µs making 14 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_substcont">HTTP::Headers::CORE:substcont</a>, avg 2µs/call
# spent 15µs making 4 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_subst">HTTP::Headers::CORE:subst</a>, avg 4µs/call</div></div></td></tr>
<tr><td class="h"><a name="156"></a>156</td><td class="c3">4</td><td class="c3"><span title="Avg 2µs">7µs</span></td><td></td><td></td><td class="s"> $standard_case{$field} = $old;</td></tr>
<tr><td class="h"><a name="157"></a>157</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="158"></a>158</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="159"></a>159</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="160"></a>160</td><td class="c0">45</td><td class="c3"><span title="Avg 231ns">10µs</span></td><td></td><td></td><td class="s"> $op ||= defined($val) ? 'SET' : 'GET';</td></tr>
<tr><td class="h"><a name="161"></a>161</td><td class="c0">45</td><td class="c2"><span title="Avg 447ns">20µs</span></td><td></td><td></td><td class="s"> if ($op eq 'PUSH_H') {</td></tr>
<tr><td class="h"><a name="162"></a>162</td><td></td><td></td><td></td><td></td><td class="s"> # Like PUSH but where we don't care about the return value</td></tr>
<tr><td class="h"><a name="163"></a>163</td><td class="c1">17</td><td class="c3"><span title="Avg 506ns">9µs</span></td><td></td><td></td><td class="s"> if (exists $self->{$field}) {</td></tr>
<tr><td class="h"><a name="164"></a>164</td><td></td><td></td><td></td><td></td><td class="s"> my $h = $self->{$field};</td></tr>
<tr><td class="h"><a name="165"></a>165</td><td></td><td></td><td></td><td></td><td class="s"> if (ref($h) eq 'ARRAY') {</td></tr>
<tr><td class="h"><a name="166"></a>166</td><td></td><td></td><td></td><td></td><td class="s"> push(@$h, ref($val) eq "ARRAY" ? @$val : $val);</td></tr>
<tr><td class="h"><a name="167"></a>167</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="168"></a>168</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="169"></a>169</td><td></td><td></td><td></td><td></td><td class="s"> $self->{$field} = [$h, ref($val) eq "ARRAY" ? @$val : $val]</td></tr>
<tr><td class="h"><a name="170"></a>170</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="171"></a>171</td><td></td><td></td><td></td><td></td><td class="s"> return;</td></tr>
<tr><td class="h"><a name="172"></a>172</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="173"></a>173</td><td class="c1">17</td><td class="c1"><span title="Avg 1µs">24µs</span></td><td></td><td></td><td class="s"> $self->{$field} = $val;</td></tr>
<tr><td class="h"><a name="174"></a>174</td><td class="c1">17</td><td class="c0"><span title="Avg 3µs">53µs</span></td><td></td><td></td><td class="s"> return;</td></tr>
<tr><td class="h"><a name="175"></a>175</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="176"></a>176</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="177"></a>177</td><td class="c0">28</td><td class="c2"><span title="Avg 625ns">18µs</span></td><td></td><td></td><td class="s"> my $h = $self->{$field};</td></tr>
<tr><td class="h"><a name="178"></a>178</td><td class="c0">28</td><td class="c1"><span title="Avg 982ns">27µs</span></td><td></td><td></td><td class="s"> my @old = ref($h) eq 'ARRAY' ? @$h : (defined($h) ? ($h) : ());</td></tr>
<tr><td class="h"><a name="179"></a>179</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="180"></a>180</td><td class="c0">28</td><td class="c2"><span title="Avg 607ns">17µs</span></td><td></td><td></td><td class="s"> unless ($op eq 'GET' || ($op eq 'INIT' && @old)) {</td></tr>
<tr><td class="h"><a name="181"></a>181</td><td class="c1">13</td><td class="c3"><span title="Avg 531ns">7µs</span></td><td></td><td></td><td class="s"> if (defined($val)) {</td></tr>
<tr><td class="h"><a name="182"></a>182</td><td class="c1">13</td><td class="c3"><span title="Avg 715ns">9µs</span></td><td></td><td></td><td class="s"> my @new = ($op eq 'PUSH') ? @old : ();</td></tr>
<tr><td class="h"><a name="183"></a>183</td><td class="c1">13</td><td class="c3"><span title="Avg 1µs">17µs</span></td><td></td><td></td><td class="s"> if (ref($val) ne 'ARRAY') {</td></tr>
<tr><td class="h"><a name="184"></a>184</td><td></td><td></td><td></td><td></td><td class="s"> push(@new, $val);</td></tr>
<tr><td class="h"><a name="185"></a>185</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="186"></a>186</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="187"></a>187</td><td class="c3">3</td><td class="c3"><span title="Avg 1µs">3µs</span></td><td></td><td></td><td class="s"> push(@new, @$val);</td></tr>
<tr><td class="h"><a name="188"></a>188</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="189"></a>189</td><td class="c1">13</td><td class="c0"><span title="Avg 3µs">35µs</span></td><td></td><td></td><td class="s"> $self->{$field} = @new > 1 ? \@new : $new[0];</td></tr>
<tr><td class="h"><a name="190"></a>190</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="191"></a>191</td><td></td><td></td><td></td><td></td><td class="s"> elsif ($op ne 'PUSH') {</td></tr>
<tr><td class="h"><a name="192"></a>192</td><td></td><td></td><td></td><td></td><td class="s"> delete $self->{$field};</td></tr>
<tr><td class="h"><a name="193"></a>193</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="194"></a>194</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="195"></a>195</td><td class="c0">28</td><td class="c0"><span title="Avg 3µs">87µs</span></td><td></td><td></td><td class="s"> @old;</td></tr>
<tr><td class="h"><a name="196"></a>196</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="197"></a>197</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="198"></a>198</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="199"></a>199</td><td></td><td></td><td></td><td></td><td class="s">sub _sorted_field_names</td></tr>
<tr><td class="h"><a name="200"></a>200</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 69µs (46+23) within HTTP::Headers::_sorted_field_names which was called 6 times, avg 12µs/call:
# 3 times (22µs+20µs) by HTTP::Headers::scan at <a href="HTTP-Headers-pm-line.html#221">line 221</a>, avg 14µs/call
# 3 times (24µs+3µs) by HTTP::Headers::header_field_names at <a href="HTTP-Headers-pm-line.html#211">line 211</a>, avg 9µs/call</div></div>{</td></tr>
<tr><td class="h"><a name="201"></a>201</td><td class="c3">6</td><td class="c3"><span title="Avg 483ns">3µs</span></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="202"></a>202</td><td></td><td></td><td></td><td></td><td class="s"> return sort {</td></tr>
<tr><td class="h"><a name="203"></a>203</td><td class="c3">6</td><td class="c0"><span title="Avg 12µs">73µs</span></td><td class="c3">6</td><td class="c3">23µs</td><td class="s"> ($header_order{$a} || 999) <=> ($header_order{$b} || 999) ||<div class="calls"><div class="calls_out"> # spent 23µs making 6 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_sort">HTTP::Headers::CORE:sort</a>, avg 4µs/call</div></div></td></tr>
<tr><td class="h"><a name="204"></a>204</td><td></td><td></td><td></td><td></td><td class="s"> $a cmp $b</td></tr>
<tr><td class="h"><a name="205"></a>205</td><td></td><td></td><td></td><td></td><td class="s"> } keys %$self</td></tr>
<tr><td class="h"><a name="206"></a>206</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="207"></a>207</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="208"></a>208</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="209"></a>209</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 53µs (27+26) within HTTP::Headers::header_field_names which was called 3 times, avg 18µs/call:
# 3 times (27µs+26µs) by LWP::UserAgent::prepare_request at <a href="LWP-UserAgent-pm-line.html#215">line 215 of LWP/UserAgent.pm</a>, avg 18µs/call</div></div>sub header_field_names {</td></tr>
<tr><td class="h"><a name="210"></a>210</td><td class="c3">3</td><td class="c3"><span title="Avg 633ns">2µs</span></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="211"></a>211</td><td class="c3">3</td><td class="c1"><span title="Avg 8µs">23µs</span></td><td class="c3">3</td><td class="c3">26µs</td><td class="s"> return map $standard_case{$_} || $_, $self->_sorted_field_names<div class="calls"><div class="calls_out"> # spent 26µs making 3 calls to <a href="HTTP-Headers-pm-line.html#200">HTTP::Headers::_sorted_field_names</a>, avg 9µs/call</div></div></td></tr>
<tr><td class="h"><a name="212"></a>212</td><td></td><td></td><td></td><td></td><td class="s"> if wantarray;</td></tr>
<tr><td class="h"><a name="213"></a>213</td><td></td><td></td><td></td><td></td><td class="s"> return keys %$self;</td></tr>
<tr><td class="h"><a name="214"></a>214</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="215"></a>215</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="216"></a>216</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="217"></a>217</td><td></td><td></td><td></td><td></td><td class="s">sub scan</td></tr>
<tr><td class="h"><a name="218"></a>218</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 226µs (97+129) within HTTP::Headers::scan which was called 3 times, avg 75µs/call:
# 3 times (97µs+129µs) by LWP::Protocol::http::request at <a href="LWP-Protocol-http-pm-line.html#167">line 167 of LWP/Protocol/http.pm</a>, avg 75µs/call</div></div>{</td></tr>
<tr><td class="h"><a name="219"></a>219</td><td class="c3">3</td><td class="c3"><span title="Avg 1µs">3µs</span></td><td></td><td></td><td class="s"> my($self, $sub) = @_;</td></tr>
<tr><td class="h"><a name="220"></a>220</td><td class="c3">3</td><td class="c3"><span title="Avg 333ns">1µs</span></td><td></td><td></td><td class="s"> my $key;</td></tr>
<tr><td class="h"><a name="221"></a>221</td><td class="c3">3</td><td class="c1"><span title="Avg 8µs">23µs</span></td><td class="c3">3</td><td class="c3">43µs</td><td class="s"> foreach $key ($self->_sorted_field_names) {<div class="calls"><div class="calls_out"> # spent 43µs making 3 calls to <a href="HTTP-Headers-pm-line.html#200">HTTP::Headers::_sorted_field_names</a>, avg 14µs/call</div></div></td></tr>
<tr><td class="h"><a name="222"></a>222</td><td class="c3">9</td><td class="c2"><span title="Avg 2µs">20µs</span></td><td class="c1">9</td><td class="c3">4µs</td><td class="s"> next if $key =~ /^_/;<div class="calls"><div class="calls_out"> # spent 4µs making 9 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_match">HTTP::Headers::CORE:match</a>, avg 389ns/call</div></div></td></tr>
<tr><td class="h"><a name="223"></a>223</td><td class="c3">9</td><td class="c3"><span title="Avg 656ns">6µs</span></td><td></td><td></td><td class="s"> my $vals = $self->{$key};</td></tr>
<tr><td class="h"><a name="224"></a>224</td><td class="c3">9</td><td class="c3"><span title="Avg 1µs">11µs</span></td><td></td><td></td><td class="s"> if (ref($vals) eq 'ARRAY') {</td></tr>
<tr><td class="h"><a name="225"></a>225</td><td></td><td></td><td></td><td></td><td class="s"> my $val;</td></tr>
<tr><td class="h"><a name="226"></a>226</td><td></td><td></td><td></td><td></td><td class="s"> for $val (@$vals) {</td></tr>
<tr><td class="h"><a name="227"></a>227</td><td></td><td></td><td></td><td></td><td class="s"> &$sub($standard_case{$key} || $key, $val);</td></tr>
<tr><td class="h"><a name="228"></a>228</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="229"></a>229</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="230"></a>230</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="231"></a>231</td><td class="c3">9</td><td class="c2"><span title="Avg 2µs">19µs</span></td><td class="c1">9</td><td class="c1">82µs</td><td class="s"> &$sub($standard_case{$key} || $key, $vals);<div class="calls"><div class="calls_out"> # spent 82µs making 9 calls to <a href="LWP-Protocol-http-pm-line.html#162">LWP::Protocol::http::__ANON__[LWP/Protocol/http.pm:167]</a>, avg 9µs/call</div></div></td></tr>
<tr><td class="h"><a name="232"></a>232</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="233"></a>233</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="234"></a>234</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="235"></a>235</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="236"></a>236</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="237"></a>237</td><td></td><td></td><td></td><td></td><td class="s">sub as_string</td></tr>
<tr><td class="h"><a name="238"></a>238</td><td></td><td></td><td></td><td></td><td class="s">{</td></tr>
<tr><td class="h"><a name="239"></a>239</td><td></td><td></td><td></td><td></td><td class="s"> my($self, $endl) = @_;</td></tr>
<tr><td class="h"><a name="240"></a>240</td><td></td><td></td><td></td><td></td><td class="s"> $endl = "\n" unless defined $endl;</td></tr>
<tr><td class="h"><a name="241"></a>241</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="242"></a>242</td><td></td><td></td><td></td><td></td><td class="s"> my @result = ();</td></tr>
<tr><td class="h"><a name="243"></a>243</td><td></td><td></td><td></td><td></td><td class="s"> $self->scan(sub {</td></tr>
<tr><td class="h"><a name="244"></a>244</td><td></td><td></td><td></td><td></td><td class="s"> my($field, $val) = @_;</td></tr>
<tr><td class="h"><a name="245"></a>245</td><td></td><td></td><td></td><td></td><td class="s"> $field =~ s/^://;</td></tr>
<tr><td class="h"><a name="246"></a>246</td><td></td><td></td><td></td><td></td><td class="s"> if ($val =~ /\n/) {</td></tr>
<tr><td class="h"><a name="247"></a>247</td><td></td><td></td><td></td><td></td><td class="s"> # must handle header values with embedded newlines with care</td></tr>
<tr><td class="h"><a name="248"></a>248</td><td></td><td></td><td></td><td></td><td class="s"> $val =~ s/\s+$//; # trailing newlines and space must go</td></tr>
<tr><td class="h"><a name="249"></a>249</td><td></td><td></td><td></td><td></td><td class="s"> $val =~ s/\n\n+/\n/g; # no empty lines</td></tr>
<tr><td class="h"><a name="250"></a>250</td><td></td><td></td><td></td><td></td><td class="s"> $val =~ s/\n([^\040\t])/\n $1/g; # intial space for continuation</td></tr>
<tr><td class="h"><a name="251"></a>251</td><td></td><td></td><td></td><td></td><td class="s"> $val =~ s/\n/$endl/g; # substitute with requested line ending</td></tr>
<tr><td class="h"><a name="252"></a>252</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="253"></a>253</td><td></td><td></td><td></td><td></td><td class="s"> push(@result, "$field: $val");</td></tr>
<tr><td class="h"><a name="254"></a>254</td><td></td><td></td><td></td><td></td><td class="s"> });</td></tr>
<tr><td class="h"><a name="255"></a>255</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="256"></a>256</td><td></td><td></td><td></td><td></td><td class="s"> join($endl, @result, '');</td></tr>
<tr><td class="h"><a name="257"></a>257</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="258"></a>258</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="259"></a>259</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="260"></a>260</td><td class="c3">3</td><td class="c0"><span title="Avg 38µs">115µs</span></td><td></td><td></td><td class="s">if (eval { require Storable; 1 }) {</td></tr>
<tr><td class="h"><a name="261"></a>261</td><td></td><td></td><td></td><td></td><td class="s"> *clone = \&Storable::dclone;</td></tr>
<tr><td class="h"><a name="262"></a>262</td><td></td><td></td><td></td><td></td><td class="s">} else {</td></tr>
<tr><td class="h"><a name="263"></a>263</td><td></td><td></td><td></td><td></td><td class="s"> *clone = sub {</td></tr>
<tr><td class="h"><a name="264"></a>264</td><td></td><td></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="265"></a>265</td><td></td><td></td><td></td><td></td><td class="s"> my $clone = new HTTP::Headers;</td></tr>
<tr><td class="h"><a name="266"></a>266</td><td></td><td></td><td></td><td></td><td class="s"> $self->scan(sub { $clone->push_header(@_);} );</td></tr>
<tr><td class="h"><a name="267"></a>267</td><td></td><td></td><td></td><td></td><td class="s"> $clone;</td></tr>
<tr><td class="h"><a name="268"></a>268</td><td></td><td></td><td></td><td></td><td class="s"> };</td></tr>
<tr><td class="h"><a name="269"></a>269</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="270"></a>270</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="271"></a>271</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="272"></a>272</td><td></td><td></td><td></td><td></td><td class="s">sub _date_header</td></tr>
<tr><td class="h"><a name="273"></a>273</td><td></td><td></td><td></td><td></td><td class="s">{</td></tr>
<tr><td class="h"><a name="274"></a>274</td><td></td><td></td><td></td><td></td><td class="s"> require HTTP::Date;</td></tr>
<tr><td class="h"><a name="275"></a>275</td><td></td><td></td><td></td><td></td><td class="s"> my($self, $header, $time) = @_;</td></tr>
<tr><td class="h"><a name="276"></a>276</td><td></td><td></td><td></td><td></td><td class="s"> my($old) = $self->_header($header);</td></tr>
<tr><td class="h"><a name="277"></a>277</td><td></td><td></td><td></td><td></td><td class="s"> if (defined $time) {</td></tr>
<tr><td class="h"><a name="278"></a>278</td><td></td><td></td><td></td><td></td><td class="s"> $self->_header($header, HTTP::Date::time2str($time));</td></tr>
<tr><td class="h"><a name="279"></a>279</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="280"></a>280</td><td></td><td></td><td></td><td></td><td class="s"> $old =~ s/;.*// if defined($old);</td></tr>
<tr><td class="h"><a name="281"></a>281</td><td></td><td></td><td></td><td></td><td class="s"> HTTP::Date::str2time($old);</td></tr>
<tr><td class="h"><a name="282"></a>282</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="283"></a>283</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="284"></a>284</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="285"></a>285</td><td></td><td></td><td></td><td></td><td class="s">sub date { shift->_date_header('Date', @_); }</td></tr>
<tr><td class="h"><a name="286"></a>286</td><td></td><td></td><td></td><td></td><td class="s">sub expires { shift->_date_header('Expires', @_); }</td></tr>
<tr><td class="h"><a name="287"></a>287</td><td></td><td></td><td></td><td></td><td class="s">sub if_modified_since { shift->_date_header('If-Modified-Since', @_); }</td></tr>
<tr><td class="h"><a name="288"></a>288</td><td></td><td></td><td></td><td></td><td class="s">sub if_unmodified_since { shift->_date_header('If-Unmodified-Since', @_); }</td></tr>
<tr><td class="h"><a name="289"></a>289</td><td></td><td></td><td></td><td></td><td class="s">sub last_modified { shift->_date_header('Last-Modified', @_); }</td></tr>
<tr><td class="h"><a name="290"></a>290</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="291"></a>291</td><td></td><td></td><td></td><td></td><td class="s"># This is used as a private LWP extension. The Client-Date header is</td></tr>
<tr><td class="h"><a name="292"></a>292</td><td></td><td></td><td></td><td></td><td class="s"># added as a timestamp to a response when it has been received.</td></tr>
<tr><td class="h"><a name="293"></a>293</td><td></td><td></td><td></td><td></td><td class="s">sub client_date { shift->_date_header('Client-Date', @_); }</td></tr>
<tr><td class="h"><a name="294"></a>294</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="295"></a>295</td><td></td><td></td><td></td><td></td><td class="s"># The retry_after field is dual format (can also be a expressed as</td></tr>
<tr><td class="h"><a name="296"></a>296</td><td></td><td></td><td></td><td></td><td class="s"># number of seconds from now), so we don't provide an easy way to</td></tr>
<tr><td class="h"><a name="297"></a>297</td><td></td><td></td><td></td><td></td><td class="s"># access it until we have know how both these interfaces can be</td></tr>
<tr><td class="h"><a name="298"></a>298</td><td></td><td></td><td></td><td></td><td class="s"># addressed. One possibility is to return a negative value for</td></tr>
<tr><td class="h"><a name="299"></a>299</td><td></td><td></td><td></td><td></td><td class="s"># relative seconds and a positive value for epoch based time values.</td></tr>
<tr><td class="h"><a name="300"></a>300</td><td></td><td></td><td></td><td></td><td class="s">#sub retry_after { shift->_date_header('Retry-After', @_); }</td></tr>
<tr><td class="h"><a name="301"></a>301</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="302"></a>302</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 173µs (165+9) within HTTP::Headers::content_type which was called 15 times, avg 12µs/call:
# 6 times (71µs+3µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 12µs/call
# 6 times (61µs+4µs) by HTTP::Headers::content_is_xhtml at <a href="HTTP-Headers-pm-line.html#353">line 353</a>, avg 11µs/call
# 3 times (33µs+2µs) by HTTP::Headers::content_is_html at <a href="HTTP-Headers-pm-line.html#349">line 349</a>, avg 12µs/call</div></div>sub content_type {</td></tr>
<tr><td class="h"><a name="303"></a>303</td><td class="c1">15</td><td class="c3"><span title="Avg 347ns">5µs</span></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="304"></a>304</td><td class="c1">15</td><td class="c3"><span title="Avg 587ns">9µs</span></td><td></td><td></td><td class="s"> my $ct = $self->{'content-type'};</td></tr>
<tr><td class="h"><a name="305"></a>305</td><td class="c1">15</td><td class="c3"><span title="Avg 593ns">9µs</span></td><td></td><td></td><td class="s"> $self->{'content-type'} = shift if @_;</td></tr>
<tr><td class="h"><a name="306"></a>306</td><td class="c1">15</td><td class="c3"><span title="Avg 407ns">6µs</span></td><td></td><td></td><td class="s"> $ct = $ct->[0] if ref($ct) eq 'ARRAY';</td></tr>
<tr><td class="h"><a name="307"></a>307</td><td class="c1">15</td><td class="c3"><span title="Avg 1µs">15µs</span></td><td></td><td></td><td class="s"> return '' unless defined($ct) && length($ct);</td></tr>
<tr><td class="h"><a name="308"></a>308</td><td class="c2">12</td><td class="c1"><span title="Avg 2µs">27µs</span></td><td></td><td></td><td class="s"> my @ct = split(/;\s*/, $ct, 2);</td></tr>
<tr><td class="h"><a name="309"></a>309</td><td class="c2">12</td><td class="c3"><span title="Avg 917ns">11µs</span></td><td></td><td></td><td class="s"> for ($ct[0]) {</td></tr>
<tr><td class="h"><a name="310"></a>310</td><td class="c2">12</td><td class="c0"><span title="Avg 3µs">41µs</span></td><td class="c0">12</td><td class="c3">9µs</td><td class="s"> s/\s+//g;<div class="calls"><div class="calls_out"> # spent 9µs making 12 calls to <a href="HTTP-Headers-pm-line.html#HTTP__Headers__CORE_subst">HTTP::Headers::CORE:subst</a>, avg 725ns/call</div></div></td></tr>
<tr><td class="h"><a name="311"></a>311</td><td class="c2">12</td><td class="c2"><span title="Avg 1µs">17µs</span></td><td></td><td></td><td class="s"> $_ = lc($_);</td></tr>
<tr><td class="h"><a name="312"></a>312</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="313"></a>313</td><td class="c2">12</td><td class="c0"><span title="Avg 4µs">44µs</span></td><td></td><td></td><td class="s"> wantarray ? @ct : $ct[0];</td></tr>
<tr><td class="h"><a name="314"></a>314</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="315"></a>315</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="316"></a>316</td><td></td><td></td><td></td><td></td><td class="s">sub content_type_charset {</td></tr>
<tr><td class="h"><a name="317"></a>317</td><td></td><td></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="318"></a>318</td><td></td><td></td><td></td><td></td><td class="s"> require HTTP::Headers::Util;</td></tr>
<tr><td class="h"><a name="319"></a>319</td><td></td><td></td><td></td><td></td><td class="s"> my $h = $self->{'content-type'};</td></tr>
<tr><td class="h"><a name="320"></a>320</td><td></td><td></td><td></td><td></td><td class="s"> $h = $h->[0] if ref($h);</td></tr>
<tr><td class="h"><a name="321"></a>321</td><td></td><td></td><td></td><td></td><td class="s"> $h = "" unless defined $h;</td></tr>
<tr><td class="h"><a name="322"></a>322</td><td></td><td></td><td></td><td></td><td class="s"> my @v = HTTP::Headers::Util::split_header_words($h);</td></tr>
<tr><td class="h"><a name="323"></a>323</td><td></td><td></td><td></td><td></td><td class="s"> if (@v) {</td></tr>
<tr><td class="h"><a name="324"></a>324</td><td></td><td></td><td></td><td></td><td class="s"> my($ct, undef, %ct_param) = @{$v[0]};</td></tr>
<tr><td class="h"><a name="325"></a>325</td><td></td><td></td><td></td><td></td><td class="s"> my $charset = $ct_param{charset};</td></tr>
<tr><td class="h"><a name="326"></a>326</td><td></td><td></td><td></td><td></td><td class="s"> if ($ct) {</td></tr>
<tr><td class="h"><a name="327"></a>327</td><td></td><td></td><td></td><td></td><td class="s"> $ct = lc($ct);</td></tr>
<tr><td class="h"><a name="328"></a>328</td><td></td><td></td><td></td><td></td><td class="s"> $ct =~ s/\s+//;</td></tr>
<tr><td class="h"><a name="329"></a>329</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="330"></a>330</td><td></td><td></td><td></td><td></td><td class="s"> if ($charset) {</td></tr>
<tr><td class="h"><a name="331"></a>331</td><td></td><td></td><td></td><td></td><td class="s"> $charset = uc($charset);</td></tr>
<tr><td class="h"><a name="332"></a>332</td><td></td><td></td><td></td><td></td><td class="s"> $charset =~ s/^\s+//; $charset =~ s/\s+\z//;</td></tr>
<tr><td class="h"><a name="333"></a>333</td><td></td><td></td><td></td><td></td><td class="s"> undef($charset) if $charset eq "";</td></tr>
<tr><td class="h"><a name="334"></a>334</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="335"></a>335</td><td></td><td></td><td></td><td></td><td class="s"> return $ct, $charset if wantarray;</td></tr>
<tr><td class="h"><a name="336"></a>336</td><td></td><td></td><td></td><td></td><td class="s"> return $charset;</td></tr>
<tr><td class="h"><a name="337"></a>337</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="338"></a>338</td><td></td><td></td><td></td><td></td><td class="s"> return undef, undef if wantarray;</td></tr>
<tr><td class="h"><a name="339"></a>339</td><td></td><td></td><td></td><td></td><td class="s"> return undef;</td></tr>
<tr><td class="h"><a name="340"></a>340</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="341"></a>341</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="342"></a>342</td><td></td><td></td><td></td><td></td><td class="s">sub content_is_text {</td></tr>
<tr><td class="h"><a name="343"></a>343</td><td></td><td></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="344"></a>344</td><td></td><td></td><td></td><td></td><td class="s"> return $self->content_type =~ m,^text/,;</td></tr>
<tr><td class="h"><a name="345"></a>345</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="346"></a>346</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="347"></a>347</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 126µs (36+90) within HTTP::Headers::content_is_html which was called 3 times, avg 42µs/call:
# 3 times (36µs+90µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 42µs/call</div></div>sub content_is_html {</td></tr>
<tr><td class="h"><a name="348"></a>348</td><td class="c3">3</td><td class="c3"><span title="Avg 633ns">2µs</span></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="349"></a>349</td><td class="c3">3</td><td class="c1"><span title="Avg 8µs">25µs</span></td><td class="c3">6</td><td class="c1">90µs</td><td class="s"> return $self->content_type eq 'text/html' || $self->content_is_xhtml;<div class="calls"><div class="calls_out"> # spent 56µs making 3 calls to <a href="HTTP-Headers-pm-line.html#352">HTTP::Headers::content_is_xhtml</a>, avg 19µs/call
# spent 35µs making 3 calls to <a href="HTTP-Headers-pm-line.html#302">HTTP::Headers::content_type</a>, avg 12µs/call</div></div></td></tr>
<tr><td class="h"><a name="350"></a>350</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="351"></a>351</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="352"></a>352</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 105µs (41+64) within HTTP::Headers::content_is_xhtml which was called 6 times, avg 17µs/call:
# 3 times (25µs+31µs) by HTTP::Headers::content_is_html at <a href="HTTP-Headers-pm-line.html#349">line 349</a>, avg 19µs/call
# 3 times (16µs+33µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 16µs/call</div></div>sub content_is_xhtml {</td></tr>
<tr><td class="h"><a name="353"></a>353</td><td class="c3">6</td><td class="c3"><span title="Avg 2µs">11µs</span></td><td class="c3">6</td><td class="c2">64µs</td><td class="s"> my $ct = shift->content_type;<div class="calls"><div class="calls_out"> # spent 64µs making 6 calls to <a href="HTTP-Headers-pm-line.html#302">HTTP::Headers::content_type</a>, avg 11µs/call</div></div></td></tr>
<tr><td class="h"><a name="354"></a>354</td><td class="c3">6</td><td class="c1"><span title="Avg 5µs">28µs</span></td><td></td><td></td><td class="s"> return $ct eq "application/xhtml+xml" ||</td></tr>
<tr><td class="h"><a name="355"></a>355</td><td></td><td></td><td></td><td></td><td class="s"> $ct eq "application/vnd.wap.xhtml+xml";</td></tr>
<tr><td class="h"><a name="356"></a>356</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="357"></a>357</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="358"></a>358</td><td></td><td></td><td></td><td></td><td class="s">sub content_is_xml {</td></tr>
<tr><td class="h"><a name="359"></a>359</td><td></td><td></td><td></td><td></td><td class="s"> my $ct = shift->content_type;</td></tr>
<tr><td class="h"><a name="360"></a>360</td><td></td><td></td><td></td><td></td><td class="s"> return 1 if $ct eq "text/xml";</td></tr>
<tr><td class="h"><a name="361"></a>361</td><td></td><td></td><td></td><td></td><td class="s"> return 1 if $ct eq "application/xml";</td></tr>
<tr><td class="h"><a name="362"></a>362</td><td></td><td></td><td></td><td></td><td class="s"> return 1 if $ct =~ /\+xml$/;</td></tr>
<tr><td class="h"><a name="363"></a>363</td><td></td><td></td><td></td><td></td><td class="s"> return 0;</td></tr>
<tr><td class="h"><a name="364"></a>364</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="365"></a>365</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="366"></a>366</td><td></td><td></td><td></td><td></td><td class="s">sub referer {</td></tr>
<tr><td class="h"><a name="367"></a>367</td><td></td><td></td><td></td><td></td><td class="s"> my $self = shift;</td></tr>
<tr><td class="h"><a name="368"></a>368</td><td></td><td></td><td></td><td></td><td class="s"> if (@_ && $_[0] =~ /#/) {</td></tr>
<tr><td class="h"><a name="369"></a>369</td><td></td><td></td><td></td><td></td><td class="s"> # Strip fragment per RFC 2616, section 14.36.</td></tr>
<tr><td class="h"><a name="370"></a>370</td><td></td><td></td><td></td><td></td><td class="s"> my $uri = shift;</td></tr>
<tr><td class="h"><a name="371"></a>371</td><td></td><td></td><td></td><td></td><td class="s"> if (ref($uri)) {</td></tr>
<tr><td class="h"><a name="372"></a>372</td><td></td><td></td><td></td><td></td><td class="s"> $uri = $uri->clone;</td></tr>
<tr><td class="h"><a name="373"></a>373</td><td></td><td></td><td></td><td></td><td class="s"> $uri->fragment(undef);</td></tr>
<tr><td class="h"><a name="374"></a>374</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="375"></a>375</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="376"></a>376</td><td></td><td></td><td></td><td></td><td class="s"> $uri =~ s/\#.*//;</td></tr>
<tr><td class="h"><a name="377"></a>377</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="378"></a>378</td><td></td><td></td><td></td><td></td><td class="s"> unshift @_, $uri;</td></tr>
<tr><td class="h"><a name="379"></a>379</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="380"></a>380</td><td></td><td></td><td></td><td></td><td class="s"> ($self->_header('Referer', @_))[0];</td></tr>
<tr><td class="h"><a name="381"></a>381</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="382"></a>382</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">*referrer = \&referer; # on tchrist's request</td></tr>
<tr><td class="h"><a name="383"></a>383</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="384"></a>384</td><td></td><td></td><td></td><td></td><td class="s">sub title { (shift->_header('Title', @_))[0] }</td></tr>
<tr><td class="h"><a name="385"></a>385</td><td></td><td></td><td></td><td></td><td class="s">sub content_encoding { (shift->_header('Content-Encoding', @_))[0] }</td></tr>
<tr><td class="h"><a name="386"></a>386</td><td></td><td></td><td></td><td></td><td class="s">sub content_language { (shift->_header('Content-Language', @_))[0] }</td></tr>
<tr><td class="h"><a name="387"></a>387</td><td class="c3">3</td><td class="c1"><span title="Avg 9µs">26µs</span></td><td class="c3">3</td><td class="c3">44µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 66µs (22+44) within HTTP::Headers::content_length which was called 3 times, avg 22µs/call:
# 3 times (22µs+44µs) by HTTP::Message::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/HTTP/Message.pm:622] at <a href="HTTP-Message-pm-line.html#622">line 622 of HTTP/Message.pm</a>, avg 22µs/call</div></div>sub content_length { (shift->_header('Content-Length', @_))[0] }<div class="calls"><div class="calls_out"># spent 44µs making 3 calls to <a href="HTTP-Headers-pm-line.html#146">HTTP::Headers::_header</a>, avg 15µs/call</div></div></td></tr>
<tr><td class="h"><a name="388"></a>388</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="389"></a>389</td><td></td><td></td><td></td><td></td><td class="s">sub user_agent { (shift->_header('User-Agent', @_))[0] }</td></tr>
<tr><td class="h"><a name="390"></a>390</td><td></td><td></td><td></td><td></td><td class="s">sub server { (shift->_header('Server', @_))[0] }</td></tr>
<tr><td class="h"><a name="391"></a>391</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="392"></a>392</td><td></td><td></td><td></td><td></td><td class="s">sub from { (shift->_header('From', @_))[0] }</td></tr>
<tr><td class="h"><a name="393"></a>393</td><td></td><td></td><td></td><td></td><td class="s">sub warning { (shift->_header('Warning', @_))[0] }</td></tr>
<tr><td class="h"><a name="394"></a>394</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="395"></a>395</td><td></td><td></td><td></td><td></td><td class="s">sub www_authenticate { (shift->_header('WWW-Authenticate', @_))[0] }</td></tr>
<tr><td class="h"><a name="396"></a>396</td><td></td><td></td><td></td><td></td><td class="s">sub authorization { (shift->_header('Authorization', @_))[0] }</td></tr>
<tr><td class="h"><a name="397"></a>397</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="398"></a>398</td><td></td><td></td><td></td><td></td><td class="s">sub proxy_authenticate { (shift->_header('Proxy-Authenticate', @_))[0] }</td></tr>
<tr><td class="h"><a name="399"></a>399</td><td></td><td></td><td></td><td></td><td class="s">sub proxy_authorization { (shift->_header('Proxy-Authorization', @_))[0] }</td></tr>
<tr><td class="h"><a name="400"></a>400</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="401"></a>401</td><td></td><td></td><td></td><td></td><td class="s">sub authorization_basic { shift->_basic_auth("Authorization", @_) }</td></tr>
<tr><td class="h"><a name="402"></a>402</td><td></td><td></td><td></td><td></td><td class="s">sub proxy_authorization_basic { shift->_basic_auth("Proxy-Authorization", @_) }</td></tr>
<tr><td class="h"><a name="403"></a>403</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="404"></a>404</td><td></td><td></td><td></td><td></td><td class="s">sub _basic_auth {</td></tr>
<tr><td class="h"><a name="405"></a>405</td><td></td><td></td><td></td><td></td><td class="s"> require MIME::Base64;</td></tr>
<tr><td class="h"><a name="406"></a>406</td><td></td><td></td><td></td><td></td><td class="s"> my($self, $h, $user, $passwd) = @_;</td></tr>
<tr><td class="h"><a name="407"></a>407</td><td></td><td></td><td></td><td></td><td class="s"> my($old) = $self->_header($h);</td></tr>
<tr><td class="h"><a name="408"></a>408</td><td></td><td></td><td></td><td></td><td class="s"> if (defined $user) {</td></tr>
<tr><td class="h"><a name="409"></a>409</td><td></td><td></td><td></td><td></td><td class="s"> Carp::croak("Basic authorization user name can't contain ':'")</td></tr>
<tr><td class="h"><a name="410"></a>410</td><td></td><td></td><td></td><td></td><td class="s"> if $user =~ /:/;</td></tr>
<tr><td class="h"><a name="411"></a>411</td><td></td><td></td><td></td><td></td><td class="s"> $passwd = '' unless defined $passwd;</td></tr>
<tr><td class="h"><a name="412"></a>412</td><td></td><td></td><td></td><td></td><td class="s"> $self->_header($h => 'Basic ' .</td></tr>
<tr><td class="h"><a name="413"></a>413</td><td></td><td></td><td></td><td></td><td class="s"> MIME::Base64::encode("$user:$passwd", ''));</td></tr>
<tr><td class="h"><a name="414"></a>414</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="415"></a>415</td><td></td><td></td><td></td><td></td><td class="s"> if (defined $old && $old =~ s/^\s*Basic\s+//) {</td></tr>
<tr><td class="h"><a name="416"></a>416</td><td></td><td></td><td></td><td></td><td class="s"> my $val = MIME::Base64::decode($old);</td></tr>
<tr><td class="h"><a name="417"></a>417</td><td></td><td></td><td></td><td></td><td class="s"> return $val unless wantarray;</td></tr>
<tr><td class="h"><a name="418"></a>418</td><td></td><td></td><td></td><td></td><td class="s"> return split(/:/, $val, 2);</td></tr>
<tr><td class="h"><a name="419"></a>419</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="420"></a>420</td><td></td><td></td><td></td><td></td><td class="s"> return;</td></tr>
<tr><td class="h"><a name="421"></a>421</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="422"></a>422</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="423"></a>423</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="424"></a>424</td><td class="c3">1</td><td class="c0"><span title="Avg 67µs">67µs</span></td><td></td><td></td><td class="s">1;</td></tr>
<tr><td class="h"><a name="425"></a>425</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="426"></a>426</td><td></td><td></td><td></td><td></td><td class="s">__END__</td></tr>
<tr><td class="h"><a name="427"></a>427</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="428"></a>428</td><td></td><td></td><td></td><td></td><td class="s">=head1 NAME</td></tr>
<tr><td class="h"><a name="429"></a>429</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="430"></a>430</td><td></td><td></td><td></td><td></td><td class="s">HTTP::Headers - Class encapsulating HTTP Message headers</td></tr>
<tr><td class="h"><a name="431"></a>431</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="432"></a>432</td><td></td><td></td><td></td><td></td><td class="s">=head1 SYNOPSIS</td></tr>
<tr><td class="h"><a name="433"></a>433</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="434"></a>434</td><td></td><td></td><td></td><td></td><td class="s"> require HTTP::Headers;</td></tr>
<tr><td class="h"><a name="435"></a>435</td><td></td><td></td><td></td><td></td><td class="s"> $h = HTTP::Headers->new;</td></tr>
<tr><td class="h"><a name="436"></a>436</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="437"></a>437</td><td></td><td></td><td></td><td></td><td class="s"> $h->header('Content-Type' => 'text/plain'); # set</td></tr>
<tr><td class="h"><a name="438"></a>438</td><td></td><td></td><td></td><td></td><td class="s"> $ct = $h->header('Content-Type'); # get</td></tr>
<tr><td class="h"><a name="439"></a>439</td><td></td><td></td><td></td><td></td><td class="s"> $h->remove_header('Content-Type'); # delete</td></tr>
<tr><td class="h"><a name="440"></a>440</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="441"></a>441</td><td></td><td></td><td></td><td></td><td class="s">=head1 DESCRIPTION</td></tr>
<tr><td class="h"><a name="442"></a>442</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="443"></a>443</td><td></td><td></td><td></td><td></td><td class="s">The C<HTTP::Headers> class encapsulates HTTP-style message headers.</td></tr>
<tr><td class="h"><a name="444"></a>444</td><td></td><td></td><td></td><td></td><td class="s">The headers consist of attribute-value pairs also called fields, which</td></tr>
<tr><td class="h"><a name="445"></a>445</td><td></td><td></td><td></td><td></td><td class="s">may be repeated, and which are printed in a particular order. The</td></tr>
<tr><td class="h"><a name="446"></a>446</td><td></td><td></td><td></td><td></td><td class="s">field names are cases insensitive.</td></tr>
<tr><td class="h"><a name="447"></a>447</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="448"></a>448</td><td></td><td></td><td></td><td></td><td class="s">Instances of this class are usually created as member variables of the</td></tr>
<tr><td class="h"><a name="449"></a>449</td><td></td><td></td><td></td><td></td><td class="s">C<HTTP::Request> and C<HTTP::Response> classes, internal to the</td></tr>
<tr><td class="h"><a name="450"></a>450</td><td></td><td></td><td></td><td></td><td class="s">library.</td></tr>
<tr><td class="h"><a name="451"></a>451</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="452"></a>452</td><td></td><td></td><td></td><td></td><td class="s">The following methods are available:</td></tr>
<tr><td class="h"><a name="453"></a>453</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="454"></a>454</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
<tr><td class="h"><a name="455"></a>455</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="456"></a>456</td><td></td><td></td><td></td><td></td><td class="s">=item $h = HTTP::Headers->new</td></tr>
<tr><td class="h"><a name="457"></a>457</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="458"></a>458</td><td></td><td></td><td></td><td></td><td class="s">Constructs a new C<HTTP::Headers> object. You might pass some initial</td></tr>
<tr><td class="h"><a name="459"></a>459</td><td></td><td></td><td></td><td></td><td class="s">attribute-value pairs as parameters to the constructor. I<E.g.>:</td></tr>
<tr><td class="h"><a name="460"></a>460</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="461"></a>461</td><td></td><td></td><td></td><td></td><td class="s"> $h = HTTP::Headers->new(</td></tr>
<tr><td class="h"><a name="462"></a>462</td><td></td><td></td><td></td><td></td><td class="s"> Date => 'Thu, 03 Feb 1994 00:00:00 GMT',</td></tr>
<tr><td class="h"><a name="463"></a>463</td><td></td><td></td><td></td><td></td><td class="s"> Content_Type => 'text/html; version=3.2',</td></tr>
<tr><td class="h"><a name="464"></a>464</td><td></td><td></td><td></td><td></td><td class="s"> Content_Base => 'http://www.perl.org/');</td></tr>
<tr><td class="h"><a name="465"></a>465</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="466"></a>466</td><td></td><td></td><td></td><td></td><td class="s">The constructor arguments are passed to the C<header> method which is</td></tr>
<tr><td class="h"><a name="467"></a>467</td><td></td><td></td><td></td><td></td><td class="s">described below.</td></tr>
<tr><td class="h"><a name="468"></a>468</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="469"></a>469</td><td></td><td></td><td></td><td></td><td class="s">=item $h->clone</td></tr>
<tr><td class="h"><a name="470"></a>470</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="471"></a>471</td><td></td><td></td><td></td><td></td><td class="s">Returns a copy of this C<HTTP::Headers> object.</td></tr>
<tr><td class="h"><a name="472"></a>472</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="473"></a>473</td><td></td><td></td><td></td><td></td><td class="s">=item $h->header( $field )</td></tr>
<tr><td class="h"><a name="474"></a>474</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="475"></a>475</td><td></td><td></td><td></td><td></td><td class="s">=item $h->header( $field => $value )</td></tr>
<tr><td class="h"><a name="476"></a>476</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="477"></a>477</td><td></td><td></td><td></td><td></td><td class="s">=item $h->header( $f1 => $v1, $f2 => $v2, ... )</td></tr>
<tr><td class="h"><a name="478"></a>478</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="479"></a>479</td><td></td><td></td><td></td><td></td><td class="s">Get or set the value of one or more header fields. The header field</td></tr>
<tr><td class="h"><a name="480"></a>480</td><td></td><td></td><td></td><td></td><td class="s">name ($field) is not case sensitive. To make the life easier for perl</td></tr>
<tr><td class="h"><a name="481"></a>481</td><td></td><td></td><td></td><td></td><td class="s">users who wants to avoid quoting before the => operator, you can use</td></tr>
<tr><td class="h"><a name="482"></a>482</td><td></td><td></td><td></td><td></td><td class="s">'_' as a replacement for '-' in header names.</td></tr>
<tr><td class="h"><a name="483"></a>483</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="484"></a>484</td><td></td><td></td><td></td><td></td><td class="s">The header() method accepts multiple ($field => $value) pairs, which</td></tr>
<tr><td class="h"><a name="485"></a>485</td><td></td><td></td><td></td><td></td><td class="s">means that you can update several fields with a single invocation.</td></tr>
<tr><td class="h"><a name="486"></a>486</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="487"></a>487</td><td></td><td></td><td></td><td></td><td class="s">The $value argument may be a plain string or a reference to an array</td></tr>
<tr><td class="h"><a name="488"></a>488</td><td></td><td></td><td></td><td></td><td class="s">of strings for a multi-valued field. If the $value is provided as</td></tr>
<tr><td class="h"><a name="489"></a>489</td><td></td><td></td><td></td><td></td><td class="s">C<undef> then the field is removed. If the $value is not given, then</td></tr>
<tr><td class="h"><a name="490"></a>490</td><td></td><td></td><td></td><td></td><td class="s">that header field will remain unchanged.</td></tr>
<tr><td class="h"><a name="491"></a>491</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="492"></a>492</td><td></td><td></td><td></td><td></td><td class="s">The old value (or values) of the last of the header fields is returned.</td></tr>
<tr><td class="h"><a name="493"></a>493</td><td></td><td></td><td></td><td></td><td class="s">If no such field exists C<undef> will be returned.</td></tr>
<tr><td class="h"><a name="494"></a>494</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="495"></a>495</td><td></td><td></td><td></td><td></td><td class="s">A multi-valued field will be returned as separate values in list</td></tr>
<tr><td class="h"><a name="496"></a>496</td><td></td><td></td><td></td><td></td><td class="s">context and will be concatenated with ", " as separator in scalar</td></tr>
<tr><td class="h"><a name="497"></a>497</td><td></td><td></td><td></td><td></td><td class="s">context. The HTTP spec (RFC 2616) promise that joining multiple</td></tr>
<tr><td class="h"><a name="498"></a>498</td><td></td><td></td><td></td><td></td><td class="s">values in this way will not change the semantic of a header field, but</td></tr>
<tr><td class="h"><a name="499"></a>499</td><td></td><td></td><td></td><td></td><td class="s">in practice there are cases like old-style Netscape cookies (see</td></tr>
<tr><td class="h"><a name="500"></a>500</td><td></td><td></td><td></td><td></td><td class="s">L<HTTP::Cookies>) where "," is used as part of the syntax of a single</td></tr>
<tr><td class="h"><a name="501"></a>501</td><td></td><td></td><td></td><td></td><td class="s">field value.</td></tr>
<tr><td class="h"><a name="502"></a>502</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="503"></a>503</td><td></td><td></td><td></td><td></td><td class="s">Examples:</td></tr>
<tr><td class="h"><a name="504"></a>504</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="505"></a>505</td><td></td><td></td><td></td><td></td><td class="s"> $header->header(MIME_Version => '1.0',</td></tr>
<tr><td class="h"><a name="506"></a>506</td><td></td><td></td><td></td><td></td><td class="s"> User_Agent => 'My-Web-Client/0.01');</td></tr>
<tr><td class="h"><a name="507"></a>507</td><td></td><td></td><td></td><td></td><td class="s"> $header->header(Accept => "text/html, text/plain, image/*");</td></tr>
<tr><td class="h"><a name="508"></a>508</td><td></td><td></td><td></td><td></td><td class="s"> $header->header(Accept => [qw(text/html text/plain image/*)]);</td></tr>
<tr><td class="h"><a name="509"></a>509</td><td></td><td></td><td></td><td></td><td class="s"> @accepts = $header->header('Accept'); # get multiple values</td></tr>
<tr><td class="h"><a name="510"></a>510</td><td></td><td></td><td></td><td></td><td class="s"> $accepts = $header->header('Accept'); # get values as a single string</td></tr>
<tr><td class="h"><a name="511"></a>511</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="512"></a>512</td><td></td><td></td><td></td><td></td><td class="s">=item $h->push_header( $field => $value )</td></tr>
<tr><td class="h"><a name="513"></a>513</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="514"></a>514</td><td></td><td></td><td></td><td></td><td class="s">=item $h->push_header( $f1 => $v1, $f2 => $v2, ... )</td></tr>
<tr><td class="h"><a name="515"></a>515</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="516"></a>516</td><td></td><td></td><td></td><td></td><td class="s">Add a new field value for the specified header field. Previous values</td></tr>
<tr><td class="h"><a name="517"></a>517</td><td></td><td></td><td></td><td></td><td class="s">for the same field are retained.</td></tr>
<tr><td class="h"><a name="518"></a>518</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="519"></a>519</td><td></td><td></td><td></td><td></td><td class="s">As for the header() method, the field name ($field) is not case</td></tr>
<tr><td class="h"><a name="520"></a>520</td><td></td><td></td><td></td><td></td><td class="s">sensitive and '_' can be used as a replacement for '-'.</td></tr>
<tr><td class="h"><a name="521"></a>521</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="522"></a>522</td><td></td><td></td><td></td><td></td><td class="s">The $value argument may be a scalar or a reference to a list of</td></tr>
<tr><td class="h"><a name="523"></a>523</td><td></td><td></td><td></td><td></td><td class="s">scalars.</td></tr>
<tr><td class="h"><a name="524"></a>524</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="525"></a>525</td><td></td><td></td><td></td><td></td><td class="s"> $header->push_header(Accept => 'image/jpeg');</td></tr>
<tr><td class="h"><a name="526"></a>526</td><td></td><td></td><td></td><td></td><td class="s"> $header->push_header(Accept => [map "image/$_", qw(gif png tiff)]);</td></tr>
<tr><td class="h"><a name="527"></a>527</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="528"></a>528</td><td></td><td></td><td></td><td></td><td class="s">=item $h->init_header( $field => $value )</td></tr>
<tr><td class="h"><a name="529"></a>529</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="530"></a>530</td><td></td><td></td><td></td><td></td><td class="s">Set the specified header to the given value, but only if no previous</td></tr>
<tr><td class="h"><a name="531"></a>531</td><td></td><td></td><td></td><td></td><td class="s">value for that field is set.</td></tr>
<tr><td class="h"><a name="532"></a>532</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="533"></a>533</td><td></td><td></td><td></td><td></td><td class="s">The header field name ($field) is not case sensitive and '_'</td></tr>
<tr><td class="h"><a name="534"></a>534</td><td></td><td></td><td></td><td></td><td class="s">can be used as a replacement for '-'.</td></tr>
<tr><td class="h"><a name="535"></a>535</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="536"></a>536</td><td></td><td></td><td></td><td></td><td class="s">The $value argument may be a scalar or a reference to a list of</td></tr>
<tr><td class="h"><a name="537"></a>537</td><td></td><td></td><td></td><td></td><td class="s">scalars.</td></tr>
<tr><td class="h"><a name="538"></a>538</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="539"></a>539</td><td></td><td></td><td></td><td></td><td class="s">=item $h->remove_header( $field, ... )</td></tr>
<tr><td class="h"><a name="540"></a>540</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="541"></a>541</td><td></td><td></td><td></td><td></td><td class="s">This function removes the header fields with the specified names.</td></tr>
<tr><td class="h"><a name="542"></a>542</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="543"></a>543</td><td></td><td></td><td></td><td></td><td class="s">The header field names ($field) are not case sensitive and '_'</td></tr>
<tr><td class="h"><a name="544"></a>544</td><td></td><td></td><td></td><td></td><td class="s">can be used as a replacement for '-'.</td></tr>
<tr><td class="h"><a name="545"></a>545</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="546"></a>546</td><td></td><td></td><td></td><td></td><td class="s">The return value is the values of the fields removed. In scalar</td></tr>
<tr><td class="h"><a name="547"></a>547</td><td></td><td></td><td></td><td></td><td class="s">context the number of fields removed is returned.</td></tr>
<tr><td class="h"><a name="548"></a>548</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="549"></a>549</td><td></td><td></td><td></td><td></td><td class="s">Note that if you pass in multiple field names then it is generally not</td></tr>
<tr><td class="h"><a name="550"></a>550</td><td></td><td></td><td></td><td></td><td class="s">possible to tell which of the returned values belonged to which field.</td></tr>
<tr><td class="h"><a name="551"></a>551</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="552"></a>552</td><td></td><td></td><td></td><td></td><td class="s">=item $h->remove_content_headers</td></tr>
<tr><td class="h"><a name="553"></a>553</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="554"></a>554</td><td></td><td></td><td></td><td></td><td class="s">This will remove all the header fields used to describe the content of</td></tr>
<tr><td class="h"><a name="555"></a>555</td><td></td><td></td><td></td><td></td><td class="s">a message. All header field names prefixed with C<Content-> falls</td></tr>
<tr><td class="h"><a name="556"></a>556</td><td></td><td></td><td></td><td></td><td class="s">into this category, as well as C<Allow>, C<Expires> and</td></tr>
<tr><td class="h"><a name="557"></a>557</td><td></td><td></td><td></td><td></td><td class="s">C<Last-Modified>. RFC 2616 denote these fields as I<Entity Header</td></tr>
<tr><td class="h"><a name="558"></a>558</td><td></td><td></td><td></td><td></td><td class="s">Fields>.</td></tr>
<tr><td class="h"><a name="559"></a>559</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="560"></a>560</td><td></td><td></td><td></td><td></td><td class="s">The return value is a new C<HTTP::Headers> object that contains the</td></tr>
<tr><td class="h"><a name="561"></a>561</td><td></td><td></td><td></td><td></td><td class="s">removed headers only.</td></tr>
<tr><td class="h"><a name="562"></a>562</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="563"></a>563</td><td></td><td></td><td></td><td></td><td class="s">=item $h->clear</td></tr>
<tr><td class="h"><a name="564"></a>564</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="565"></a>565</td><td></td><td></td><td></td><td></td><td class="s">This will remove all header fields.</td></tr>
<tr><td class="h"><a name="566"></a>566</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="567"></a>567</td><td></td><td></td><td></td><td></td><td class="s">=item $h->header_field_names</td></tr>
<tr><td class="h"><a name="568"></a>568</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="569"></a>569</td><td></td><td></td><td></td><td></td><td class="s">Returns the list of distinct names for the fields present in the</td></tr>
<tr><td class="h"><a name="570"></a>570</td><td></td><td></td><td></td><td></td><td class="s">header. The field names have case as suggested by HTTP spec, and the</td></tr>
<tr><td class="h"><a name="571"></a>571</td><td></td><td></td><td></td><td></td><td class="s">names are returned in the recommended "Good Practice" order.</td></tr>
<tr><td class="h"><a name="572"></a>572</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="573"></a>573</td><td></td><td></td><td></td><td></td><td class="s">In scalar context return the number of distinct field names.</td></tr>
<tr><td class="h"><a name="574"></a>574</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="575"></a>575</td><td></td><td></td><td></td><td></td><td class="s">=item $h->scan( \&process_header_field )</td></tr>
<tr><td class="h"><a name="576"></a>576</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="577"></a>577</td><td></td><td></td><td></td><td></td><td class="s">Apply a subroutine to each header field in turn. The callback routine</td></tr>
<tr><td class="h"><a name="578"></a>578</td><td></td><td></td><td></td><td></td><td class="s">is called with two parameters; the name of the field and a single</td></tr>
<tr><td class="h"><a name="579"></a>579</td><td></td><td></td><td></td><td></td><td class="s">value (a string). If a header field is multi-valued, then the</td></tr>
<tr><td class="h"><a name="580"></a>580</td><td></td><td></td><td></td><td></td><td class="s">routine is called once for each value. The field name passed to the</td></tr>
<tr><td class="h"><a name="581"></a>581</td><td></td><td></td><td></td><td></td><td class="s">callback routine has case as suggested by HTTP spec, and the headers</td></tr>
<tr><td class="h"><a name="582"></a>582</td><td></td><td></td><td></td><td></td><td class="s">will be visited in the recommended "Good Practice" order.</td></tr>
<tr><td class="h"><a name="583"></a>583</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="584"></a>584</td><td></td><td></td><td></td><td></td><td class="s">Any return values of the callback routine are ignored. The loop can</td></tr>
<tr><td class="h"><a name="585"></a>585</td><td></td><td></td><td></td><td></td><td class="s">be broken by raising an exception (C<die>), but the caller of scan()</td></tr>
<tr><td class="h"><a name="586"></a>586</td><td></td><td></td><td></td><td></td><td class="s">would have to trap the exception itself.</td></tr>
<tr><td class="h"><a name="587"></a>587</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="588"></a>588</td><td></td><td></td><td></td><td></td><td class="s">=item $h->as_string</td></tr>
<tr><td class="h"><a name="589"></a>589</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="590"></a>590</td><td></td><td></td><td></td><td></td><td class="s">=item $h->as_string( $eol )</td></tr>
<tr><td class="h"><a name="591"></a>591</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="592"></a>592</td><td></td><td></td><td></td><td></td><td class="s">Return the header fields as a formatted MIME header. Since it</td></tr>
<tr><td class="h"><a name="593"></a>593</td><td></td><td></td><td></td><td></td><td class="s">internally uses the C<scan> method to build the string, the result</td></tr>
<tr><td class="h"><a name="594"></a>594</td><td></td><td></td><td></td><td></td><td class="s">will use case as suggested by HTTP spec, and it will follow</td></tr>
<tr><td class="h"><a name="595"></a>595</td><td></td><td></td><td></td><td></td><td class="s">recommended "Good Practice" of ordering the header fields. Long header</td></tr>
<tr><td class="h"><a name="596"></a>596</td><td></td><td></td><td></td><td></td><td class="s">values are not folded.</td></tr>
<tr><td class="h"><a name="597"></a>597</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="598"></a>598</td><td></td><td></td><td></td><td></td><td class="s">The optional $eol parameter specifies the line ending sequence to</td></tr>
<tr><td class="h"><a name="599"></a>599</td><td></td><td></td><td></td><td></td><td class="s">use. The default is "\n". Embedded "\n" characters in header field</td></tr>
<tr><td class="h"><a name="600"></a>600</td><td></td><td></td><td></td><td></td><td class="s">values will be substituted with this line ending sequence.</td></tr>
<tr><td class="h"><a name="601"></a>601</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="602"></a>602</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="603"></a>603</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="604"></a>604</td><td></td><td></td><td></td><td></td><td class="s">=head1 CONVENIENCE METHODS</td></tr>
<tr><td class="h"><a name="605"></a>605</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="606"></a>606</td><td></td><td></td><td></td><td></td><td class="s">The most frequently used headers can also be accessed through the</td></tr>
<tr><td class="h"><a name="607"></a>607</td><td></td><td></td><td></td><td></td><td class="s">following convenience Methods. Most of these methods can both be used to read</td></tr>
<tr><td class="h"><a name="608"></a>608</td><td></td><td></td><td></td><td></td><td class="s">and to set the value of a header. The header value is set if you pass</td></tr>
<tr><td class="h"><a name="609"></a>609</td><td></td><td></td><td></td><td></td><td class="s">an argument to the method. The old header value is always returned.</td></tr>
<tr><td class="h"><a name="610"></a>610</td><td></td><td></td><td></td><td></td><td class="s">If the given header did not exist then C<undef> is returned.</td></tr>
<tr><td class="h"><a name="611"></a>611</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="612"></a>612</td><td></td><td></td><td></td><td></td><td class="s">Methods that deal with dates/times always convert their value to system</td></tr>
<tr><td class="h"><a name="613"></a>613</td><td></td><td></td><td></td><td></td><td class="s">time (seconds since Jan 1, 1970) and they also expect this kind of</td></tr>
<tr><td class="h"><a name="614"></a>614</td><td></td><td></td><td></td><td></td><td class="s">value when the header value is set.</td></tr>
<tr><td class="h"><a name="615"></a>615</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="616"></a>616</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
<tr><td class="h"><a name="617"></a>617</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="618"></a>618</td><td></td><td></td><td></td><td></td><td class="s">=item $h->date</td></tr>
<tr><td class="h"><a name="619"></a>619</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="620"></a>620</td><td></td><td></td><td></td><td></td><td class="s">This header represents the date and time at which the message was</td></tr>
<tr><td class="h"><a name="621"></a>621</td><td></td><td></td><td></td><td></td><td class="s">originated. I<E.g.>:</td></tr>
<tr><td class="h"><a name="622"></a>622</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="623"></a>623</td><td></td><td></td><td></td><td></td><td class="s"> $h->date(time); # set current date</td></tr>
<tr><td class="h"><a name="624"></a>624</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="625"></a>625</td><td></td><td></td><td></td><td></td><td class="s">=item $h->expires</td></tr>
<tr><td class="h"><a name="626"></a>626</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="627"></a>627</td><td></td><td></td><td></td><td></td><td class="s">This header gives the date and time after which the entity should be</td></tr>
<tr><td class="h"><a name="628"></a>628</td><td></td><td></td><td></td><td></td><td class="s">considered stale.</td></tr>
<tr><td class="h"><a name="629"></a>629</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="630"></a>630</td><td></td><td></td><td></td><td></td><td class="s">=item $h->if_modified_since</td></tr>
<tr><td class="h"><a name="631"></a>631</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="632"></a>632</td><td></td><td></td><td></td><td></td><td class="s">=item $h->if_unmodified_since</td></tr>
<tr><td class="h"><a name="633"></a>633</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="634"></a>634</td><td></td><td></td><td></td><td></td><td class="s">These header fields are used to make a request conditional. If the requested</td></tr>
<tr><td class="h"><a name="635"></a>635</td><td></td><td></td><td></td><td></td><td class="s">resource has (or has not) been modified since the time specified in this field,</td></tr>
<tr><td class="h"><a name="636"></a>636</td><td></td><td></td><td></td><td></td><td class="s">then the server will return a C<304 Not Modified> response instead of</td></tr>
<tr><td class="h"><a name="637"></a>637</td><td></td><td></td><td></td><td></td><td class="s">the document itself.</td></tr>
<tr><td class="h"><a name="638"></a>638</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="639"></a>639</td><td></td><td></td><td></td><td></td><td class="s">=item $h->last_modified</td></tr>
<tr><td class="h"><a name="640"></a>640</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="641"></a>641</td><td></td><td></td><td></td><td></td><td class="s">This header indicates the date and time at which the resource was last</td></tr>
<tr><td class="h"><a name="642"></a>642</td><td></td><td></td><td></td><td></td><td class="s">modified. I<E.g.>:</td></tr>
<tr><td class="h"><a name="643"></a>643</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="644"></a>644</td><td></td><td></td><td></td><td></td><td class="s"> # check if document is more than 1 hour old</td></tr>
<tr><td class="h"><a name="645"></a>645</td><td></td><td></td><td></td><td></td><td class="s"> if (my $last_mod = $h->last_modified) {</td></tr>
<tr><td class="h"><a name="646"></a>646</td><td></td><td></td><td></td><td></td><td class="s"> if ($last_mod < time - 60*60) {</td></tr>
<tr><td class="h"><a name="647"></a>647</td><td></td><td></td><td></td><td></td><td class="s"> ...</td></tr>
<tr><td class="h"><a name="648"></a>648</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="649"></a>649</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="650"></a>650</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="651"></a>651</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_type</td></tr>
<tr><td class="h"><a name="652"></a>652</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="653"></a>653</td><td></td><td></td><td></td><td></td><td class="s">The Content-Type header field indicates the media type of the message</td></tr>
<tr><td class="h"><a name="654"></a>654</td><td></td><td></td><td></td><td></td><td class="s">content. I<E.g.>:</td></tr>
<tr><td class="h"><a name="655"></a>655</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="656"></a>656</td><td></td><td></td><td></td><td></td><td class="s"> $h->content_type('text/html');</td></tr>
<tr><td class="h"><a name="657"></a>657</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="658"></a>658</td><td></td><td></td><td></td><td></td><td class="s">The value returned will be converted to lower case, and potential</td></tr>
<tr><td class="h"><a name="659"></a>659</td><td></td><td></td><td></td><td></td><td class="s">parameters will be chopped off and returned as a separate value if in</td></tr>
<tr><td class="h"><a name="660"></a>660</td><td></td><td></td><td></td><td></td><td class="s">an array context. If there is no such header field, then the empty</td></tr>
<tr><td class="h"><a name="661"></a>661</td><td></td><td></td><td></td><td></td><td class="s">string is returned. This makes it safe to do the following:</td></tr>
<tr><td class="h"><a name="662"></a>662</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="663"></a>663</td><td></td><td></td><td></td><td></td><td class="s"> if ($h->content_type eq 'text/html') {</td></tr>
<tr><td class="h"><a name="664"></a>664</td><td></td><td></td><td></td><td></td><td class="s"> # we enter this place even if the real header value happens to</td></tr>
<tr><td class="h"><a name="665"></a>665</td><td></td><td></td><td></td><td></td><td class="s"> # be 'TEXT/HTML; version=3.0'</td></tr>
<tr><td class="h"><a name="666"></a>666</td><td></td><td></td><td></td><td></td><td class="s"> ...</td></tr>
<tr><td class="h"><a name="667"></a>667</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="668"></a>668</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="669"></a>669</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_type_charset</td></tr>
<tr><td class="h"><a name="670"></a>670</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="671"></a>671</td><td></td><td></td><td></td><td></td><td class="s">Returns the upper-cased charset specified in the Content-Type header. In list</td></tr>
<tr><td class="h"><a name="672"></a>672</td><td></td><td></td><td></td><td></td><td class="s">context return the lower-cased bare content type followed by the upper-cased</td></tr>
<tr><td class="h"><a name="673"></a>673</td><td></td><td></td><td></td><td></td><td class="s">charset. Both values will be C<undef> if not specified in the header.</td></tr>
<tr><td class="h"><a name="674"></a>674</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="675"></a>675</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_is_text</td></tr>
<tr><td class="h"><a name="676"></a>676</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="677"></a>677</td><td></td><td></td><td></td><td></td><td class="s">Returns TRUE if the Content-Type header field indicate that the</td></tr>
<tr><td class="h"><a name="678"></a>678</td><td></td><td></td><td></td><td></td><td class="s">content is textual.</td></tr>
<tr><td class="h"><a name="679"></a>679</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="680"></a>680</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_is_html</td></tr>
<tr><td class="h"><a name="681"></a>681</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="682"></a>682</td><td></td><td></td><td></td><td></td><td class="s">Returns TRUE if the Content-Type header field indicate that the</td></tr>
<tr><td class="h"><a name="683"></a>683</td><td></td><td></td><td></td><td></td><td class="s">content is some kind of HTML (including XHTML). This method can't be</td></tr>
<tr><td class="h"><a name="684"></a>684</td><td></td><td></td><td></td><td></td><td class="s">used to set Content-Type.</td></tr>
<tr><td class="h"><a name="685"></a>685</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="686"></a>686</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_is_xhtml</td></tr>
<tr><td class="h"><a name="687"></a>687</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="688"></a>688</td><td></td><td></td><td></td><td></td><td class="s">Returns TRUE if the Content-Type header field indicate that the</td></tr>
<tr><td class="h"><a name="689"></a>689</td><td></td><td></td><td></td><td></td><td class="s">content is XHTML. This method can't be used to set Content-Type.</td></tr>
<tr><td class="h"><a name="690"></a>690</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="691"></a>691</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_is_xml</td></tr>
<tr><td class="h"><a name="692"></a>692</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="693"></a>693</td><td></td><td></td><td></td><td></td><td class="s">Returns TRUE if the Content-Type header field indicate that the</td></tr>
<tr><td class="h"><a name="694"></a>694</td><td></td><td></td><td></td><td></td><td class="s">content is XML. This method can't be used to set Content-Type.</td></tr>
<tr><td class="h"><a name="695"></a>695</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="696"></a>696</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_encoding</td></tr>
<tr><td class="h"><a name="697"></a>697</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="698"></a>698</td><td></td><td></td><td></td><td></td><td class="s">The Content-Encoding header field is used as a modifier to the</td></tr>
<tr><td class="h"><a name="699"></a>699</td><td></td><td></td><td></td><td></td><td class="s">media type. When present, its value indicates what additional</td></tr>
<tr><td class="h"><a name="700"></a>700</td><td></td><td></td><td></td><td></td><td class="s">encoding mechanism has been applied to the resource.</td></tr>
<tr><td class="h"><a name="701"></a>701</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="702"></a>702</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_length</td></tr>
<tr><td class="h"><a name="703"></a>703</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="704"></a>704</td><td></td><td></td><td></td><td></td><td class="s">A decimal number indicating the size in bytes of the message content.</td></tr>
<tr><td class="h"><a name="705"></a>705</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="706"></a>706</td><td></td><td></td><td></td><td></td><td class="s">=item $h->content_language</td></tr>
<tr><td class="h"><a name="707"></a>707</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="708"></a>708</td><td></td><td></td><td></td><td></td><td class="s">The natural language(s) of the intended audience for the message</td></tr>
<tr><td class="h"><a name="709"></a>709</td><td></td><td></td><td></td><td></td><td class="s">content. The value is one or more language tags as defined by RFC</td></tr>
<tr><td class="h"><a name="710"></a>710</td><td></td><td></td><td></td><td></td><td class="s">1766. Eg. "no" for some kind of Norwegian and "en-US" for English the</td></tr>
<tr><td class="h"><a name="711"></a>711</td><td></td><td></td><td></td><td></td><td class="s">way it is written in the US.</td></tr>
<tr><td class="h"><a name="712"></a>712</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="713"></a>713</td><td></td><td></td><td></td><td></td><td class="s">=item $h->title</td></tr>
<tr><td class="h"><a name="714"></a>714</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="715"></a>715</td><td></td><td></td><td></td><td></td><td class="s">The title of the document. In libwww-perl this header will be</td></tr>
<tr><td class="h"><a name="716"></a>716</td><td></td><td></td><td></td><td></td><td class="s">initialized automatically from the E<lt>TITLE>...E<lt>/TITLE> element</td></tr>
<tr><td class="h"><a name="717"></a>717</td><td></td><td></td><td></td><td></td><td class="s">of HTML documents. I<This header is no longer part of the HTTP</td></tr>
<tr><td class="h"><a name="718"></a>718</td><td></td><td></td><td></td><td></td><td class="s">standard.></td></tr>
<tr><td class="h"><a name="719"></a>719</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="720"></a>720</td><td></td><td></td><td></td><td></td><td class="s">=item $h->user_agent</td></tr>
<tr><td class="h"><a name="721"></a>721</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="722"></a>722</td><td></td><td></td><td></td><td></td><td class="s">This header field is used in request messages and contains information</td></tr>
<tr><td class="h"><a name="723"></a>723</td><td></td><td></td><td></td><td></td><td class="s">about the user agent originating the request. I<E.g.>:</td></tr>
<tr><td class="h"><a name="724"></a>724</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="725"></a>725</td><td></td><td></td><td></td><td></td><td class="s"> $h->user_agent('Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 6.0)');</td></tr>
<tr><td class="h"><a name="726"></a>726</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="727"></a>727</td><td></td><td></td><td></td><td></td><td class="s">=item $h->server</td></tr>
<tr><td class="h"><a name="728"></a>728</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="729"></a>729</td><td></td><td></td><td></td><td></td><td class="s">The server header field contains information about the software being</td></tr>
<tr><td class="h"><a name="730"></a>730</td><td></td><td></td><td></td><td></td><td class="s">used by the originating server program handling the request.</td></tr>
<tr><td class="h"><a name="731"></a>731</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="732"></a>732</td><td></td><td></td><td></td><td></td><td class="s">=item $h->from</td></tr>
<tr><td class="h"><a name="733"></a>733</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="734"></a>734</td><td></td><td></td><td></td><td></td><td class="s">This header should contain an Internet e-mail address for the human</td></tr>
<tr><td class="h"><a name="735"></a>735</td><td></td><td></td><td></td><td></td><td class="s">user who controls the requesting user agent. The address should be</td></tr>
<tr><td class="h"><a name="736"></a>736</td><td></td><td></td><td></td><td></td><td class="s">machine-usable, as defined by RFC822. E.g.:</td></tr>
<tr><td class="h"><a name="737"></a>737</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="738"></a>738</td><td></td><td></td><td></td><td></td><td class="s"> $h->from('King Kong <king@kong.com>');</td></tr>
<tr><td class="h"><a name="739"></a>739</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="740"></a>740</td><td></td><td></td><td></td><td></td><td class="s">I<This header is no longer part of the HTTP standard.></td></tr>
<tr><td class="h"><a name="741"></a>741</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="742"></a>742</td><td></td><td></td><td></td><td></td><td class="s">=item $h->referer</td></tr>
<tr><td class="h"><a name="743"></a>743</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="744"></a>744</td><td></td><td></td><td></td><td></td><td class="s">Used to specify the address (URI) of the document from which the</td></tr>
<tr><td class="h"><a name="745"></a>745</td><td></td><td></td><td></td><td></td><td class="s">requested resource address was obtained.</td></tr>
<tr><td class="h"><a name="746"></a>746</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="747"></a>747</td><td></td><td></td><td></td><td></td><td class="s">The "Free On-line Dictionary of Computing" as this to say about the</td></tr>
<tr><td class="h"><a name="748"></a>748</td><td></td><td></td><td></td><td></td><td class="s">word I<referer>:</td></tr>
<tr><td class="h"><a name="749"></a>749</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="750"></a>750</td><td></td><td></td><td></td><td></td><td class="s"> <World-Wide Web> A misspelling of "referrer" which</td></tr>
<tr><td class="h"><a name="751"></a>751</td><td></td><td></td><td></td><td></td><td class="s"> somehow made it into the {HTTP} standard. A given {web</td></tr>
<tr><td class="h"><a name="752"></a>752</td><td></td><td></td><td></td><td></td><td class="s"> page}'s referer (sic) is the {URL} of whatever web page</td></tr>
<tr><td class="h"><a name="753"></a>753</td><td></td><td></td><td></td><td></td><td class="s"> contains the link that the user followed to the current</td></tr>
<tr><td class="h"><a name="754"></a>754</td><td></td><td></td><td></td><td></td><td class="s"> page. Most browsers pass this information as part of a</td></tr>
<tr><td class="h"><a name="755"></a>755</td><td></td><td></td><td></td><td></td><td class="s"> request.</td></tr>
<tr><td class="h"><a name="756"></a>756</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="757"></a>757</td><td></td><td></td><td></td><td></td><td class="s"> (1998-10-19)</td></tr>
<tr><td class="h"><a name="758"></a>758</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="759"></a>759</td><td></td><td></td><td></td><td></td><td class="s">By popular demand C<referrer> exists as an alias for this method so you</td></tr>
<tr><td class="h"><a name="760"></a>760</td><td></td><td></td><td></td><td></td><td class="s">can avoid this misspelling in your programs and still send the right</td></tr>
<tr><td class="h"><a name="761"></a>761</td><td></td><td></td><td></td><td></td><td class="s">thing on the wire.</td></tr>
<tr><td class="h"><a name="762"></a>762</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="763"></a>763</td><td></td><td></td><td></td><td></td><td class="s">When setting the referrer, this method removes the fragment from the</td></tr>
<tr><td class="h"><a name="764"></a>764</td><td></td><td></td><td></td><td></td><td class="s">given URI if it is present, as mandated by RFC2616. Note that</td></tr>
<tr><td class="h"><a name="765"></a>765</td><td></td><td></td><td></td><td></td><td class="s">the removal does I<not> happen automatically if using the header(),</td></tr>
<tr><td class="h"><a name="766"></a>766</td><td></td><td></td><td></td><td></td><td class="s">push_header() or init_header() methods to set the referrer.</td></tr>
<tr><td class="h"><a name="767"></a>767</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="768"></a>768</td><td></td><td></td><td></td><td></td><td class="s">=item $h->www_authenticate</td></tr>
<tr><td class="h"><a name="769"></a>769</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="770"></a>770</td><td></td><td></td><td></td><td></td><td class="s">This header must be included as part of a C<401 Unauthorized> response.</td></tr>
<tr><td class="h"><a name="771"></a>771</td><td></td><td></td><td></td><td></td><td class="s">The field value consist of a challenge that indicates the</td></tr>
<tr><td class="h"><a name="772"></a>772</td><td></td><td></td><td></td><td></td><td class="s">authentication scheme and parameters applicable to the requested URI.</td></tr>
<tr><td class="h"><a name="773"></a>773</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="774"></a>774</td><td></td><td></td><td></td><td></td><td class="s">=item $h->proxy_authenticate</td></tr>
<tr><td class="h"><a name="775"></a>775</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="776"></a>776</td><td></td><td></td><td></td><td></td><td class="s">This header must be included in a C<407 Proxy Authentication Required></td></tr>
<tr><td class="h"><a name="777"></a>777</td><td></td><td></td><td></td><td></td><td class="s">response.</td></tr>
<tr><td class="h"><a name="778"></a>778</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="779"></a>779</td><td></td><td></td><td></td><td></td><td class="s">=item $h->authorization</td></tr>
<tr><td class="h"><a name="780"></a>780</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="781"></a>781</td><td></td><td></td><td></td><td></td><td class="s">=item $h->proxy_authorization</td></tr>
<tr><td class="h"><a name="782"></a>782</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="783"></a>783</td><td></td><td></td><td></td><td></td><td class="s">A user agent that wishes to authenticate itself with a server or a</td></tr>
<tr><td class="h"><a name="784"></a>784</td><td></td><td></td><td></td><td></td><td class="s">proxy, may do so by including these headers.</td></tr>
<tr><td class="h"><a name="785"></a>785</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="786"></a>786</td><td></td><td></td><td></td><td></td><td class="s">=item $h->authorization_basic</td></tr>
<tr><td class="h"><a name="787"></a>787</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="788"></a>788</td><td></td><td></td><td></td><td></td><td class="s">This method is used to get or set an authorization header that use the</td></tr>
<tr><td class="h"><a name="789"></a>789</td><td></td><td></td><td></td><td></td><td class="s">"Basic Authentication Scheme". In array context it will return two</td></tr>
<tr><td class="h"><a name="790"></a>790</td><td></td><td></td><td></td><td></td><td class="s">values; the user name and the password. In scalar context it will</td></tr>
<tr><td class="h"><a name="791"></a>791</td><td></td><td></td><td></td><td></td><td class="s">return I<"uname:password"> as a single string value.</td></tr>
<tr><td class="h"><a name="792"></a>792</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="793"></a>793</td><td></td><td></td><td></td><td></td><td class="s">When used to set the header value, it expects two arguments. I<E.g.>:</td></tr>
<tr><td class="h"><a name="794"></a>794</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="795"></a>795</td><td></td><td></td><td></td><td></td><td class="s"> $h->authorization_basic($uname, $password);</td></tr>
<tr><td class="h"><a name="796"></a>796</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="797"></a>797</td><td></td><td></td><td></td><td></td><td class="s">The method will croak if the $uname contains a colon ':'.</td></tr>
<tr><td class="h"><a name="798"></a>798</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="799"></a>799</td><td></td><td></td><td></td><td></td><td class="s">=item $h->proxy_authorization_basic</td></tr>
<tr><td class="h"><a name="800"></a>800</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="801"></a>801</td><td></td><td></td><td></td><td></td><td class="s">Same as authorization_basic() but will set the "Proxy-Authorization"</td></tr>
<tr><td class="h"><a name="802"></a>802</td><td></td><td></td><td></td><td></td><td class="s">header instead.</td></tr>
<tr><td class="h"><a name="803"></a>803</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="804"></a>804</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="805"></a>805</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="806"></a>806</td><td></td><td></td><td></td><td></td><td class="s">=head1 NON-CANONICALIZED FIELD NAMES</td></tr>
<tr><td class="h"><a name="807"></a>807</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="808"></a>808</td><td></td><td></td><td></td><td></td><td class="s">The header field name spelling is normally canonicalized including the</td></tr>
<tr><td class="h"><a name="809"></a>809</td><td></td><td></td><td></td><td></td><td class="s">'_' to '-' translation. There are some application where this is not</td></tr>
<tr><td class="h"><a name="810"></a>810</td><td></td><td></td><td></td><td></td><td class="s">appropriate. Prefixing field names with ':' allow you to force a</td></tr>
<tr><td class="h"><a name="811"></a>811</td><td></td><td></td><td></td><td></td><td class="s">specific spelling. For example if you really want a header field name</td></tr>
<tr><td class="h"><a name="812"></a>812</td><td></td><td></td><td></td><td></td><td class="s">to show up as C<foo_bar> instead of "Foo-Bar", you might set it like</td></tr>
<tr><td class="h"><a name="813"></a>813</td><td></td><td></td><td></td><td></td><td class="s">this:</td></tr>
<tr><td class="h"><a name="814"></a>814</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="815"></a>815</td><td></td><td></td><td></td><td></td><td class="s"> $h->header(":foo_bar" => 1);</td></tr>
<tr><td class="h"><a name="816"></a>816</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="817"></a>817</td><td></td><td></td><td></td><td></td><td class="s">These field names are returned with the ':' intact for</td></tr>
<tr><td class="h"><a name="818"></a>818</td><td></td><td></td><td></td><td></td><td class="s">$h->header_field_names and the $h->scan callback, but the colons do</td></tr>
<tr><td class="h"><a name="819"></a>819</td><td></td><td></td><td></td><td></td><td class="s">not show in $h->as_string.</td></tr>
<tr><td class="h"><a name="820"></a>820</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="821"></a>821</td><td></td><td></td><td></td><td></td><td class="s">=head1 COPYRIGHT</td></tr>
<tr><td class="h"><a name="822"></a>822</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="823"></a>823</td><td></td><td></td><td></td><td></td><td class="s">Copyright 1995-2005 Gisle Aas.</td></tr>
<tr><td class="h"><a name="824"></a>824</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="825"></a>825</td><td></td><td></td><td></td><td></td><td class="s">This library is free software; you can redistribute it and/or</td></tr>
<tr><td class="h"><a name="826"></a>826</td><td></td><td></td><td></td><td></td><td class="s">modify it under the same terms as Perl itself.</td></tr>
<tr><td class="h"><a name="827"></a>827</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="HTTP__Headers__CORE_match"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 33µs within HTTP::Headers::CORE:match which was called 57 times, avg 572ns/call:
# 45 times (26µs+0s) by HTTP::Headers::_header at <a href="HTTP-Headers-pm-line.html#149">line 149 of HTTP/Headers.pm</a>, avg 589ns/call
# 9 times (4µs+0s) by HTTP::Headers::scan at <a href="HTTP-Headers-pm-line.html#222">line 222 of HTTP/Headers.pm</a>, avg 389ns/call
# 3 times (3µs+0s) by HTTP::Headers::remove_header at <a href="HTTP-Headers-pm-line.html#121">line 121 of HTTP/Headers.pm</a>, avg 867ns/call</div></div>sub HTTP::Headers::CORE:match; # xsub<br /> </td></tr>
<tr><td class="h"><a name="HTTP__Headers__CORE_sort"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 23µs within HTTP::Headers::CORE:sort which was called 6 times, avg 4µs/call:
# 6 times (23µs+0s) by HTTP::Headers::_sorted_field_names at <a href="HTTP-Headers-pm-line.html#203">line 203 of HTTP/Headers.pm</a>, avg 4µs/call</div></div>sub HTTP::Headers::CORE:sort; # xsub<br /> </td></tr>
<tr><td class="h"><a name="HTTP__Headers__CORE_subst"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 24µs within HTTP::Headers::CORE:subst which was called 16 times, avg 1µs/call:
# 12 times (9µs+0s) by HTTP::Headers::content_type at <a href="HTTP-Headers-pm-line.html#310">line 310 of HTTP/Headers.pm</a>, avg 725ns/call
# 4 times (15µs+0s) by HTTP::Headers::_header at <a href="HTTP-Headers-pm-line.html#155">line 155 of HTTP/Headers.pm</a>, avg 4µs/call</div></div>sub HTTP::Headers::CORE:subst; # xsub<br /> </td></tr>
<tr><td class="h"><a name="HTTP__Headers__CORE_substcont"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 28µs within HTTP::Headers::CORE:substcont which was called 14 times, avg 2µs/call:
# 14 times (28µs+0s) by HTTP::Headers::_header at <a href="HTTP-Headers-pm-line.html#155">line 155 of HTTP/Headers.pm</a>, avg 2µs/call</div></div>sub HTTP::Headers::CORE:substcont; # xsub<br /> </td></tr>
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