[SR-Users] RPC, XMLRPC or other
Kristofer Signer
kristofer.signer at gmail.com
Tue Nov 13 12:24:30 CET 2012
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
>>
>>
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