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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<section id="fline_parser" xmlns:xi="http://www.w3.org/2001/XInclude">
<sectioninfo>
<revhistory>
<revision>
<revnumber>$Revision$</revnumber>
<date>$Date$</date>
</revision>
</revhistory>
</sectioninfo>
<title>The First Line Parser</title>
<para>
Purpose of the parser is to parse the first line of a
<acronym>SIP</acronym> message. The first line is represented by
<structname>msg_start</structname> structure define in file
<filename>parse_fline.h</filename> under <filename>parser</filename>
subdirectory.
</para>
<para>
The main function of the first line parser is
<function>parse_first_line</function>, the function will fill in
<structname>msg_start</structname> structure.
</para>
<para>
Follow inline comments in the function if you want to add support for a
new message type.
</para>
</section>
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