[SR-Users] RPC, XMLRPC or other
Carlos Ruiz Díaz
carlos.ruizdiaz at gmail.com
Tue Nov 13 13:51:45 CET 2012
If you write your own parser you will be writing your own implementation of
the xmlrpc decoder which I believe could be very complicated not even
mentioning that it's close to reinventing the wheel.
I think Carsten's solution is the best right now. I'll try his approach
myself.
Best Regards.
--
Carlos
http://caruizdiaz.com
+595981146623
On Tue, Nov 13, 2012 at 8:24 AM, Kristofer Signer <
kristofer.signer at gmail.com> wrote:
> Hello,
>
>
> On Tue, Nov 13, 2012 at 5:03 AM, Carlos Ruiz Díaz
> <carlos.ruizdiaz at gmail.com> wrote:
> > Hello,
> >
> > I've been through this problem a few weeks ago with my module that
> exports
> > nested structures through xmlrpc. Apparently, there's a limitation in the
> > technology itself that makes the nested structures to be overwritten
> > everytime the response XML is parsed, if you look closely, you will
> notice
> > that this makes sense since the structures are indexed by the name of the
> > field, which is the same for every record. That's the reason of only one
> row
> > being displayed even though the whole recordset was sent out.
>
> Yes, I have noticed this. And the problem is that a struct is just a
> key-value-pair datatype which in normal situation does not support
> multiple key with the same name.
>
> A more correct implementation would be to represent the AoRs in an array.
>
> I think I will also write a work around for this. just parsing the return
> xml.
>
>
>
>
> >
> > I tried with three different php libraries, even with xmlrpc_decode()
> that
> > is the official function for decoding xmlrpc responses in php.
> >
> > I didn't find a solution but I ended up using a workaround sending the
> > values using CSV format which was later parsed by the PHP in charge of
> > displaying the data.
> >
> > Regards.
> >
> > Carlos.
> >
> > On Mon, Nov 12, 2012 at 11:43 PM, Daniel-Constantin Mierla
> > <miconda at gmail.com> wrote:
> >>
> >> Hello,
> >>
> >> I am not a python parameter, but seems a limitation of the
> xmlrpc_test2.py
> >> tool, the tcp dump shows that the records are sent back in the xmlrpc
> >> response.
> >>
> >> You will have to look inside/troubleshoot the xmlrpc_test2.py and see
> why
> >> it fails.
> >>
> >> Cheers,
> >> Daniel
> >>
> >>
> >> On 11/12/12 9:58 AM, Kristofer Signer wrote:
> >>
> >> Hello,
> >>
> >> running kamailio 3.3.2.
> >>
> >> On Mon, Nov 12, 2012 at 1:48 PM, Daniel-Constantin Mierla
> >> <miconda at gmail.com> wrote:
> >>>
> >>> Hello,
> >>>
> >>>
> >>> On 11/12/12 10:02 AM, Kristofer Signer wrote:
> >>>>
> >>>> Hello,
> >>>>
> >>>> I'm trying to dig in to the kamailio XMLRPC interfaces and the
> >>>> limitations I read in
> >>>>
> http://www.kamailio.org/docs/modules/stable/modules/xmlrpc.html#xmlrpc.implementation.limitations
> >>>>
> >>>> is really a no go for us.
> >>>
> >>> which one is a 'no go'? Nested structures are supported in the last
> >>> version, iirc, the readme does not seem to be updated for this case.
> >>
> >> the 'no go' is the structure {AoR, HashID, Contact, AoR, HashID,
> Contacts,
> >> ...}
> >>>
> >>>
> >>>
> >>>>
> >>>> For example, when to retrieve user locations and list of dialogs we
> get
> >>>> a xml document which is not so well formatted and we can not
> successfully
> >>>> parse it in an xmlrpc-parser.
> >>>>
> >>>> Is there other options for xmlrpc module?
> >>>
> >>>
> >>> If the body is not successfully parsed, it is a bug. The limitation is
> >>> about not supporting all the data types, but when a reply is xmlrpc
> sent, it
> >>> should be valid. Can you test it with 1-2 location records that fail
> and
> >>> post the xmrpc here as well as the log error messages from the xml
> parser?
> >>
> >>
> >> Actually, I don't get any errors. I'm using the python example provided
> in
> >> kamailio src and that example will only parse out one record.
> >>
> >>
> >> [krsi at vera examples]$ python xmlrpc_test2.py ul.dump foo
> >> {'Domain': 'location', 'Stats': {'Records': 2, 'Max-Slots': 1}, 'AoRs':
> >> {'HashID': 1731621673, 'AoR': 'jkp-01', 'Contacts': {'Contact': {'Ruid':
> >> 'uloc-50a0ea3c-124bf-1', 'Received': '[not set]', 'Path': '[not set]',
> >> 'Reg-Id': 0, 'Expires': 99, 'Flags': 0, 'User-Agent': 'Jitsi1.0-Linux',
> 'Q':
> >> 0.0, 'Instance': '[not set]', 'State': 'CS_SYNC', 'CSeq': 11, 'Methods':
> >> 18446744073709551615L, 'CFlags': 0, 'Address':
> >> 'sip:jkp-01 at 192.168.0.214:25060
> ;transport=udp;registering_acc=foo_bar_com',
> >> 'Call-ID': '61ac73a44826f3887a5db2371b044275 at 0:0:0:0:0:0:0:0',
> 'Socket':
> >> 'udp:192.168.0.82:5060'}}}, 'Size': 512}
> >>
> >> As you can see,. there should be two records but only one is parsed.
> >>
> >>
> >> Here is the response body from tcpdump
> >>
> >> <?xml version="1.0"?>
> >> <methodResponse>
> >> <params>
> >> <param>
> >> <value><struct>
> >>
> >>
> <member><name>Domain</name><value><string>location</string></value></member>
> >> <member><name>Size</name><value><int>512</int></value></member>
> >> <member>
> >> <name>AoRs</name>
> >> <value><struct>
> >>
> >> <member><name>AoR</name><value><string>jkp-02</string></value></member>
> >>
> >> <member><name>HashID</name><value><int>1731621670</int></value></member>
> >> <member>
> >> <name>Contacts</name>
> >> <value><struct>
> >> <member>
> >> <name>Contact</name>
> >> <value><struct>
> >>
> >> <member><name>Address</name><value><string>
> sip:jkp-02 at 192.168.0.214:35060</string></value></member>
> >>
> >> <member><name>Expires</name><value><int>768</int></value></member>
> >>
> >> <member><name>Q</name><value><double>0.000000</double></value></member>
> >>
> >> <member><name>Call-ID</name><value><string>rcilzqsjfpnuihl at vera.foo.com
> </string></value></member>
> >>
> >> <member><name>CSeq</name><value><int>383</int></value></member>
> >>
> >>
> <member><name>User-Agent</name><value><string>Twinkle/1.4.2</string></value></member>
> >> <member><name>Received</name><value><string>[not
> >> set]</string></value></member>
> >> <member><name>Path</name><value><string>[not
> >> set]</string></value></member>
> >>
> >>
> <member><name>State</name><value><string>CS_SYNC</string></value></member>
> >>
> >> <member><name>Flags</name><value><int>0</int></value></member>
> >>
> >> <member><name>CFlags</name><value><int>0</int></value></member>
> >>
> >> <member><name>Socket</name><value><string>udp:192.168.0.82:5060
> </string></value></member>
> >>
> >> <member><name>Methods</name><value><int>6111</int></value></member>
> >>
> >>
> <member><name>Ruid</name><value><string>uloc-50a0ea3c-124c0-1</string></value></member>
> >> <member><name>Instance</name><value><string>[not
> >> set]</string></value></member>
> >>
> >> <member><name>Reg-Id</name><value><int>0</int></value></member>
> >> </struct></value>
> >> </member>
> >> </struct></value>
> >> </member>
> >> <member>
> >> <name>AoR</name><value><string>jkp-01</string></value></member>
> >>
> >> <member><name>HashID</name><value><int>1731621673</int></value></member>
> >> <member>
> >> <name>Contacts</name>
> >> <value><struct>
> >> <member>
> >> <name>Contact</name>
> >> <value><struct>
> >>
> >> <member><name>Address</name><value><string>
> sip:jkp-01 at 192.168.0.214:25060</string></value></member>
> >>
> >> <member><name>Expires</name><value><int>185</int></value></member>
> >>
> >> <member><name>Q</name><value><double>0.000000</double></value></member>
> >>
> >>
> <member><name>Call-ID</name><value><string>61ac73a44826f3887a5db2371b044275 at 0
> :0:0:0:0:0:0:0</string></value></member>
> >>
> >> <member><name>CSeq</name><value><int>12</int></value></member>
> >>
> >>
> <member><name>User-Agent</name><value><string>Jitsi1.0-Linux</string></value></member>
> >> <member><name>Received</name><value><string>[not
> >> set]</string></value></member>
> >> <member><name>Path</name><value><string>[not
> >> set]</string></value></member>
> >>
> >>
> <member><name>State</name><value><string>CS_SYNC</string></value></member>
> >>
> >> <member><name>Flags</name><value><int>0</int></value></member>
> >>
> >> <member><name>CFlags</name><value><int>0</int></value></member>
> >>
> >> <member><name>Socket</name><value><string>udp:192.168.0.82:5060
> </string></value></member>
> >>
> >>
> <member><name>Methods</name><value><int>18446744073709551615</int></value></member>
> >>
> >>
> <member><name>Ruid</name><value><string>uloc-50a0ea3c-124bf-1</string></value></member>
> >> <member><name>Instance</name><value><string>[not
> >> set]</string></value></member>
> >>
> >> <member><name>Reg-Id</name><value><int>0</int></value></member>
> >> </struct></value>
> >> </member>
> >> </struct></value>
> >> </member>
> >> </struct></value>
> >> </member>
> >> <member>
> >> <name>Stats</name>
> >> <value><struct>
> >> <member><name>Records</name><value><int>2</int></value></member>
> >>
> <member><name>Max-Slots</name><value><int>1</int></value></member>
> >> </struct></value>
> >> </member>
> >> </struct></value>
> >> </param>
> >> </params>
> >> </methodResponse>
> >>
> >>
> >>
> >> and for reference, the same command from kamctl:
> >>
> >> [krsi at sipproxy1 ~]$ kamctl mi ul_dump
> >> Domain:: location table=512 records=2 max_slot=1
> >> AOR:: jkp-02
> >> Contact:: sip:jkp-02 at 192.168.0.214:35060 Q=
> >> Expires:: 1961
> >> Callid:: rcilzqsjfpnuihl at vera.foo.se
> >> Cseq:: 383
> >> User-agent:: Twinkle/1.4.2
> >> State:: CS_SYNC
> >> Flags:: 0
> >> Cflag:: 0
> >> Socket:: udp:192.168.0.82:5060
> >> Methods:: 6111
> >> Ruid:: uloc-50a0ea3c-124c0-1
> >> Reg-Id:: 0
> >> AOR:: jkp-01
> >> Contact:: sip:jkp-01 at 192.168.0.214:25060 Q=
> >> Expires:: 298
> >> Callid::
> >> 61ac73a44826f3887a5db2371b044275 at 0:0:0:0:0:0:0:0
> >> Cseq:: 10
> >> User-agent:: Jitsi1.0-Linux
> >> State:: CS_SYNC
> >> Flags:: 0
> >> Cflag:: 0
> >> Socket:: udp:192.168.0.82:5060
> >> Methods:: 4294967295
> >> Ruid:: uloc-50a0ea3c-124bf-1
> >> Reg-Id:: 0
> >>
> >>
> >> Thanks
> >> ./Kristofer
> >>
> >>>
> >>> For example, siremis uses the xmlrpc interface and all is ok with
> >>> handling the replies. It uses a library from php pear.
> >>>
> >>> Cheers,
> >>> Daniel
> >>>
> >>> --
> >>> Daniel-Constantin Mierla - http://www.asipto.com
> >>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> >>>
> >>
> >>
> >> --
> >> Daniel-Constantin Mierla - http://www.asipto.com
> >> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> >>
> >>
> >> _______________________________________________
> >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> >> sr-users at lists.sip-router.org
> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >>
> >
>
--
Carlos
http://caruizdiaz.com
+595981146623
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