@wkampich commented on this pull request.

In src/modules/lost/doc/lost_admin.xml:

> +			    </itemizedlist>
+			<para>
+			The return value is 200 on success, 400 if an internal error occured, or 500 if an
+            error code is returned in the HELD response.
+	    	</para>
+			<para>
+			This function can be used from REQUEST_ROUTE,
+			ONREPLY_ROUTE, FAILURE_ROUTE, and BRANCH_ROUTE.
+			</para>
+			<example>
+				<title><function>lost_held_dereference()</function> usage</title>
+				<programlisting format="linespecific">
+...
+# HELD location dereference
+if ($hdr(Geolocation)=~"^&lt;http.*$") {
+    $var(url) = $(hdr(Geolocation){s.select,0,;});

@sergey-safarov: you may use the following to dereference multiple header fields:

## response time in ms: 20000, or 'emergencyRouting' or 'emergencyDispatch' 
#!substdef "!MY_LOC_TIME!emergencyDispatch!g"
## location type: 'any', 'civic', 'geodetic', or 'civic geodetic'
#!substdef "!MY_LOC_TYPE!any!g"

...

if(is_present_hf("Geolocation")) {
        $var(count) = 0;
        while($var(count) < $hdrc(Geolocation)) {
                $var(geo) = $(hdr(Geolocation)[$var(count)]);
                if ($var(geo)=~"^<http.*$") {
                        $var(url) = $(var(geo){s.select,0,;});
                        xlog("L_INFO", "### HELD dereferencing location at: $(var(url){s.unbracket})\n");
                        $var(res) = lost_held_dereference("$(var(url){s.unbracket})", "MY_LOC_TIME", "MY_LOC_TYPE", "$var(pidf)", "$var(err)");
                        if ($var(res) == 200) {
                                xlog("L_INFO", "### HELD dereference request returned loc:\n$var(pidf)\n");
                        } else {
                                xlog("L_INFO", "###  held request failed with $var(err)\n");
                        }
                }
        }
}

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