Trying out a basic SIP application (CSIPExample code form Nokia SIP Plug-in 3.0 for Series 60 Programmer's Guide.pdf). REGISTER done, but have not able to do an INVITE. Used the EComPlugin packaged along with Chipflip by modifying the .rss file (which has the same name as dll UID). The .rss file entries default_data and opaque_data were customised for the project. default_data was given the sample application UID and application name value in opaque_data entry changed to reflect sample application name. Server logs recorded error 415 for an INVITE request issued. On comparing server logs of Chipflip with the sample application, observed that Content type, Content length info... was not being set for the INVITE message. Have listed
both the logs. What could be causing this problem?

SAMPLE APPLICATION INVITE
-------------------------
INVITE sip:arijit2@192.168.0.45 SIP/2.0
Route: <sip:192.168.0.79;lr>
Via: SIP/2.0/UDP 192.168.0.200:5060;branch=z9hG4bK_U9UDiSG2R26w
From: sip:original@192.168.0.79;tag=qHVUDpDsvB
To: sip:arijit2@192.168.0.45
Contact: sip:original@192.168.0.200
Supported: sec-agree
CSeq: 8304 INVITE
Call-ID: K-BUDv4NB5lqlJE1vRRS8J9NYy5hZZ
Max-Forwards: 70
Content-Length: 0

CHIPFLIP INVITE
---------------
INVITE sip:junk@realm SIP/2.0
Route: <sip:192.168.0.79;lr>
Via: SIP/2.0/UDP 192.168.0.200:5060;branch=z9hG4bKrfpISNp7Z6jqn
From: sip:original@192.168.0.79;tag=aEJISW8Nwm
To: sip:junk@realm
Supported: 100rel,sec-agree
Contact: sip:original@192.168.0.200
CSeq: 5714 INVITE
Call-ID: 34VISPImLSPTBk0OgCZ3lgbCyjup48
s: subject
Max-Forwards: 70
Content-Type: application/sdp
Content-Length: 157

v=0
o=original 3326093141 3326093142 IN IP4 192.168.0.200
s=SipSession
c=IN IP4 192.168.0.200
t=0 0
m=application 49152 TCP Chipflip
a=direction:both


Have also pasted EComPlugin ddl .rss file

#include <RegistryInfo.rh>

RESOURCE REGISTRY_INFO theInfo
{
// UID for the DLL
dll_uid = 0x1020691B;
// Declare array of interface info
interfaces =
{
INTERFACE_INFO
{
// UID of interface that is implemented
interface_uid = 0x102010DD;
implementations =
{
IMPLEMENTATION_INFO
{
implementation_uid = 0x1020691B;
version_no = 1;
// APPLICATION UID: Must match to the one passed to CSIP::NewL.
default_data = "0521184a";
opaque_data = "<SIP_CLIENT ALLOW_STARTING=\"YES\"><SIP_HEADERS><ACCEPT

value=\"application/sdp\"/></SIP_HEADERS><SDP_LINES><LINE name=\"m\" value=\"application 1025 tcp

Sippy\"/></SDP_LINES></SIP_CLIENT>";
}
};
}
};
}