OK, I see, from SIP msg is a single body part, the `message/cpim`, which
has a more complex structure - and the XML is just a bit of that cpim
https://datatracker.ietf.org/doc/html/rfc3862
I'm afaid right now there is no way to do the CPIM paring is OpenSIPS,
in order to extract the XML. - maybe you can find the third element if
you split by a double "\r\n" ? using a s.select transformation...
Regards
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 5/13/26 17:33, Robert Dyck wrote:
See attached files.
On Wednesday, May 13, 2026 1:29:26 a.m. Pacific Daylight Time you wrote:
Could you send me the SIP message as pcap?
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 5/12/26 17:52, Robert Dyck wrote:
Experimenting - Try to expose for example state.
$xml(bla) = $rb(application/im-iscomposing+xml);
xlog("$xml(bla/isComposing/state)\n");
*NOTICE:If content-type is message/cpim don't store it*
DBG:core:parse_headers_aux: flags=ffffffffffffffff
DBG:core:decode_mime_type: Decoding MIME type
for:[message/cpim]DBG:core:pv_get_msg_body: --------mime is <196863>,
idx=0DBG:core:pv_get_msg_body: Index too big [0],
body_part=(nil)*ERROR:xml:pv_set_xml: Uninitialized xml object:
bla**ERROR:core:do_assign: setting PV failed**ERROR:core:do_assign:
error at /usr/local/etc/opensips/opensips.cfg:670*
DBG:xml:pv_get_xml: Unknown object <bla>
*NOTICE:<null>*
The second content-type is invisible to opensips.
I don't think opensips knows about mime message/cpim.
Some functions, for instance handle_publish assume that the start of
the body is also the start of xml. With message/cpim that is not the case.
Here is the part of MESSAGE that is of interest.
Content-Encoding: deflate
Content-Type: message/cpim
Content-Length: 249
Priority: non-urgent
Expires: 0
User-Agent: Linphone-Desktop/6.2.0-beta.19+1d6910749 (silver.mylan)
fedora/44 Qt/6.9.1 LinphoneSDK/5.5.0-beta-84-g7a481f7e71
Message Body
From: <sip:[email protected]>\r\n
To: <sip:[email protected]>\r\n
DateTime: 2026-05-04T16:46:24Z\r\n
\r\n
Content-Type: application/im-iscomposing+xml\r\n
Content-Length: 207\r\n
\r\n
<?xml version="1.0" encoding="UTF-8" standalone="no" ?><isComposing
xmlns="urn:ietf:params:xml:ns:im-iscomposing"><state>active</state><conten
ttype>text/plain</contenttype><refresh>60</refresh></isComposing>
message/cpim enforces this format for the body.
On Tuesday, May 12, 2026 2:49:49 a.m. Pacific Daylight Time you wrote:
IF you have a multi-part body, shouldn't this do the trick:
$xml(bla) = $rb(application/im-iscomposing+xml);
[1] https://opensips.org/Documentation/Script-CoreVar-3-6#rb
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 5/11/26 18:40, Robert Dyck wrote:
I don't think that $xml() can be made to work. The first parameter for
$xml() is the name of an xml object. This would work for the xml we
create ourself with xml module. How would we extract an xml and
name it.
I thought about using the content type as a filter. This was
problematic
because MESSAGE ( RFC 3248 page mode ) allows SIP headers in the
body. We
receive two Content-Type headers. I tried using $cT[index] but the
second
Content-Type is never found. Using any index always just returns
the first
instance.
I tried using sipmsgops has_body_part( mime ). This doesn't work
for the
same reason filtering the content type didn't work. This function uses
the content type as the first step in its filter. It will never find
"Content-Type: application/im-iscomposing+xml".
I can keep the xml from being stored in the silo by filtering on
"Content-Type message/cpim" but I am not happy with it. It is not
specific enough and may cause issues.
On Thursday, May 7, 2026 1:36:49 a.m. Pacific Daylight Time you wrote:
if you have $xml(bla) = "....some xml....";
Try like $xml(bla/isComposing.attr/xmlns)
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 5/6/26 22:19, Robert Dyck wrote:
I am trying to understand $xml() and added some logging to the
script.
I know the contents of the xml doc.
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<isComposing xmlns="urn:ietf:params:xml:ns:im-iscomposing">
<state>active</state>
<contenttype>text/plain</contenttype>
<refresh>60</refresh>
</isComposing>'
Using statements such as "xlog("xlm is $xml(?xml/isComposing)\n");"
I get DBG:xml:pv_get_xml: Unknown object <?xml>
The same if I ignore the version element and try "isComposing".
It says Unknown object <isComposing>
Printing the entire $xml doesn't work.
BG:core:parse_headers_aux: flags=ffffffffffffffff
[266B blob data]
On Wednesday, May 6, 2026 1:08:11 a.m. Pacific Daylight Time you
wrote:
According to the grammar [1], you have access to the attributes:
access = .val | .attr/string | .attr/$var
An example:
$xml(my_doc/doc/list.attr/sort) = "asc"; # add
attribute "sort"
to list node
[1] https://opensips.org/docs/modules/3.6.x/xml.html#pv_xml
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 5/4/26 17:31, Robert Dyck wrote:
Yes.
Or perhaps just detect the the presence of xlm. It should not go
into the
silo.
On Monday, May 4, 2026 6:48:50 a.m. Pacific Daylight Time you
wrote:
You mean the xmlns attribute of the isComposing node ?
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 4/27/26 19:21, Robert Dyck wrote:
I have looked at the module and it is not clear to me how
one would
extract the name space from the xml.
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<isComposing xmlns="urn:ietf:params:xml:ns:im-iscomposing">
<state>active</state>
<contenttype>text/plain</contenttype>
<refresh>60</refresh>
</isComposing>'
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On Monday, April 27, 2026 7:31:14 a.m. Pacific Daylight Time you
wrote:
Robert,
Check thishttps://opensips.org/docs/modules/3.6.x/xml.html
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
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