SIP body is gone by Brekeke SIP server

1. Brekeke Product Name and version:
Brekeke SIP verser 2.4.8.6/286.3
2. Java version:
1.6.0_29
3. OS type and the version:
Windows7
4. UA (phone), gateway or other hardware/software involved:
Phone
5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/ ... terns.html :
Pattern1
6. Your problem:

structure: User A - Brekeke SIP server - User B
Descriptions:
1. User A send INVITE with SIP body for Instant Messenger(Content-length is 728)
2. Brekeke server receive the SIP message from User A
3. Brekeke server send the received SIP message to User B without SIP body. (Content-length is only 10 )
4. User B get SIP header only without SIP body.
Question: How to keep the SIP body without loss during transaction between two users??

I'm attaching some parts of SIP message for clear.

[ SIP message User A ]
INVITE sip:+12345678@test.test.aa;user=phone SIP/2.0
.
.
.
Contact: <sip+87654321@111.222.333.444:5060;transport=TCP>;+g.oma.sip-im
Via: SIP............
content-Type: multipart/mixed;boundry="++"
content-Length: 728

--++
content-type: application/sdp
content-Length: 268
v=0
0=haha-IMS-UE........
.
.
.

--++
content-Type: message/cpim
content-Length: 333
From:....
.
.
.
content-Type: message/cpim
content-Length: 4
hihi
--++

[ Brekeke SIP server is sending the received SIP message to User B ]
INVITE sip:+12345678@test.test.aa;user=phone SIP/2.0
.
.
.
Contact: <sip+87654321@444.333.222.111:50498;transport=TCP>;+g.oma.sip-im
Via: SIP............
content-Type: multipart/mixed;boundry="++"
content-Length: 10 << there is no SIP body ;(
--"++"

From the packet information you pasted, it seems your SIP client doesn't meet the RFC( 1341,2046) requirements.

This is the reason of the problem.

Follow the RFC correctly.
----------------------------
Each part starts with an encapsulation boundary, and then contains a body part
consisting of header area, a blank line, and a body area.
----------------------------

[ SIP message User A ]
INVITE sip:+12345678@test.test.aa;user=phone SIP/2.0
.
.
.
Contact: <sip+87654321@111.222.333.444:5060;transport=TCP>;+g.oma.sip-im
Via: SIP............
content-Type: multipart/mixed;boundry="++"
content-Length: 728

--++
content-type: application/sdp
content-Length: 268

v=0
0=haha-IMS-UE........
.
.
.

--++
content-Type: message/cpim
content-Length: 333

From:....
.
.
.
imdn.Disposition-Notification: positive-delivery, negative-delivery, display

content-Type: message/cpim
content-Length: 4

hihi
--++

[ Brekeke SIP server is sending the received SIP message to User B ]
INVITE sip:+12345678@test.test.aa;user=phone SIP/2.0
.
.
.
Contact: <sip+87654321@444.333.222.111:50498;transport=TCP>;+g.oma.sip-im
Via: SIP............
content-Type: multipart/mixed;boundry="++"
content-Length: 10 << there is no SIP body ;(

--"++"

Check the RFC again.

"boundry" must be "boundary".