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<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" 
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">

<section id="xlog" xmlns:xi="http://www.w3.org/2001/XInclude">
    <sectioninfo>
	<authorgroup>
	    <author>
		<firstname>Elena-Ramona</firstname>
		<surname>Modroiu</surname>
		<affiliation><orgname>Voice Sistem</orgname></affiliation>
		<address>
		<email>ramona@voice-system.ro</email>
		<otheraddr>
		<ulink url="http://www.voice-system.ro">http://www.voice-system.ro</ulink>
		</otheraddr>
		</address>
	    </author>
	</authorgroup>
	<copyright>
	    <year>2003</year>
	    <holder>FhG FOKUS</holder>
	</copyright>
	<revhistory>
	    <revision>
		<revnumber>$Revision: 1.4 $</revnumber>
		<date>$Date: 2006/05/11 13:44:13 $</date>
	    </revision>
	</revhistory>

    </sectioninfo>

    <title>Xlog Module</title>

    <section id="xlog.overview">
	<title>Overview</title>
	<para>
	    This module provides the possibility to print user formatted log or
	    debug messages from SER scripts, similar to printf function but now
	    a specifier is replaced with a part of the SIP request. <xref
	    linkend="implemented_specifiers"/> shows what can be printed out.
	</para>
    </section>

    <section id="implemented_specifiers">
	<title>Implemented Specifiers</title>
	<itemizedlist>
	    <listitem>
		<para>
		    %% : '%'
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %br : request's first branch
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %bR : request's all branches
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ci : call-id
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %cs : cseq
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ct : contact header
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Cxy : color printing based on escape sequences (x - foreground
			color, y - background color). The values for colors: x - default
			color of the terminal; s - Black; r - Red; g - Green; y - Yellow;
			b - Blue; p - Purple; c - Cyan; w - White 
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ds : destination set
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %fu : 'From' uri
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ft : 'From' tag
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Hn : host's hostname (if system hostname is FQDN, part before first .)
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Hd : host's domain (if system hosntame is FQDN, part behind first .)
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Hf : host's FQDN hostname
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Hi : host's IP address
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %mb : whole SIP message buffer
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %mf : flags set for current SIP request
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %mi : SIP message id
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ml : SIP message length
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %mx : SIP message id (in hex notation)
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %nh : message's next hop
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %pp : process id (pid)
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %px : process id (pid) (in hex notation)
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %rm : request's method
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ru : request's r-uri
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %rr : reply's reason
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %rs : reply's status
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %rt : 'Refer-To' uri
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Ri : IP address of the interface where the request
		    has been received
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Rp : received port
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %si : IP source address 
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %sp : source port
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %tu : 'To' uri
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %tt : 'To' tag
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Ts : unix time stamp
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Tf : string formatted time
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %Tx : unix time stamp (in hex notation)
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %ua : User agent header field
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %uq : unique id (per SER's process) - to make really unique id use
			%uq-%px-%mx or %uq-%px-%Tx
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %{name[N]} : print the body of the Nth header identified by
		    'name'. If [N] is omitted then the body of the first header
		    is printed. The first header is got when N=0, for the
		    second N=1, a.s.o. To print the last header of that type,
		    use -1, no other negative values are supported now. No
		    white spaces are allowed inside the specifier (before },
		    before or after {, [, ] symbols). When N='*', all headers
		    of that type are printed.
		</para>
		<para>
		    The module should identify most of compact header names
		    (the ones recognized by ser which should be all at this
		    moment), if not, the compact form has to be specified
		    explicitely. It is recommended to use dedicated specifiers
		    for headers (e.g., %ua for user agent header), if they are
		    available -- they are faster.
		</para>
	    </listitem>
	    <listitem>
		<para>
			%&lt;name[N]&gt; : print the value of AVP optionally
			%indexed by the [N] value
			It uses AVPs subindexing, e.g. if you don't specify
			subindex and there are more AVPs with the same name, the
			result is NULL. To specify first AVP use [1], negative
			values are indexes counted backward through the list.
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %@select.framework[N].value : print the value of select
			framework call. For detailed info what calls are available
			see select framework documentation (and modules
			documentation, as modules can extend select framework
			calls).
		</para>
	    </listitem>
	    <listitem>
		<para>
		    %| or %(space) : end of %@select.framework identifier.
			If you need to concatenate select framework call and
			another non-whitespace literal, you need to explicitelly
			set the end of the select framework identifier.
		</para>
		<para>
			E.g. %@ruri.user%|@%@ruri.host converts all featured request
			uri into user@host form only.
		</para>
	    </listitem>
	</itemizedlist>
    </section>

    <xi:include href="params.xml"/>
    <xi:include href="functions.xml"/>

</section>
