[Serusers] xmlrpc calls

[zkeatts]

I am currently trying to do an xml-rpc call to usrloc.show_contacts.  
The xml packet I am sending is the following

POST /RPC2 HTTP/1.0
User-Agent: Radio UserLand/7.1b7 (WinNT)
Host: localhost:5060
Content-Type: text/xml
Content-length: 131

<?xml version=\"1.0\"?>
<methodCall>
<methodName>usrloc.show_contacts</methodName>
<params>
</params>
</methodCall>

As a return packet I am getting

HTTP/1.0 200 OK
Via: SIP/2.0/UDP 127.0.0.1:32769
Server: Sip EXpress router (0.10.99-janakj_experimental (i386/linux))
Content-Length: 303
Warning: 392 127.0.0.1:5060 "Noisy feedback tells:  pid=5820 
req_src_ip=127.0.0.1 req_src_port=32769 in_uri=/RPC2 out_uri=/RPC2 
via_cnt==1"

<?xml version="1.0" encoding="UTF-8"?>
<methodResponse>
<fault>
<value><struct>
<member><name>faultCode</name>
<value><i4>400</i4></value></member>
<member><name>faultString</name>
<value><string>More Parameters Expected</string></value></member>
</struct></value>
</fault>
</methodResponse>

This tells me that I am not entering the correct information, but I am 
at a loss to exactly what else I should be inserting.

I did a search for rpc_show_contacts and found in 
./sip_router/modules/usrloc/ul_rpc.c

static void rpc_show_contacts(rpc_t* rpc)

After searching some more I could not find the rpc_t structure.  Does 
anyone know what values I should be passing via XML?

Thanks,

Zach Keatts
Software Engineer
Nuvio.com