With ser-0.8.14_linux_i386.tar.gz verion and cfg file as bellow.

The callee recieve error messages:

RECEIVE TIME: 16626717
RECEIVE << 210.22.131.228:5060
INVITE sip:7776@210.22.131.226:5060 SIP/2.0
Record-Route: <sip:7776@210.22.131.228;ftag=3498;lr=on>
Via: SIP/2.0/UDP 210.22.131.228;branch=z9hG4bK262e.c0776712.0
Via: SIP/2.0/UDP 192.168.0.120:5060;rport=15060;received=210.22.131.226;branch=z9hG4bK16045
From: <sip:8000@210.22.131.228>;tag=3498
To: <sip:7776@210.22.131.228>
Call-ID: 16927@192.168.0.120
CSeq: 20 INVITE
Contact: <sip:8000@210.22.131.226:15060>
Max-Forwards: 4
User-Agent: eXosip/0.1
Subject: test subject
Expires: 120
Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, REFER, SUBSCRIBE, NOTIFY, MESSAGE
Content-Type: application/sdp
Content-Length: 225
Alex-hint: NAThelper
Alex-hint: SDP rewritten
P-hint: usrloc applied
NAT: ...

v=0
o=userX 20000001 20000001 IN IP4 192.168.0.120
s=A call
c=IN IP4 210.22.131.226210.22.131.228

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/*210.22.131.226 is my nat's ip and 210.22.131.228 is my ser ip RTP proxy is run at this server.*?
t=4 3604
m=audio 35058 RTP/AVP 8
a=rtpmap:8 pcma/8000
a=direction:active
a=oldmediaip:192.168.0.120
a=nortpproxy:yes

log message show the follow error:

Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10986]: ERROR: extract_body: message body has lenght zero
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10986]: ERROR: fix_nated_sdp: cannot extract body from msg!
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10986]: ERROR: extract_body: message body has lenght zero
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10986]: ERROR: force_rtp_proxy2: can't extract body from the message
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10987]: ERROR: extract_body: message body has lenght zero
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10987]: ERROR: fix_nated_sdp: cannot extract body from msg!
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10987]: ERROR: extract_body: message body has lenght zero
Aug 28 17:34:33 sipod-sh /usr/local/sbin/ser[10987]: ERROR: force_rtp_proxy2: can't extract body from the message
Aug 28 17:34:42 sipod-sh /usr/local/sbin/ser[10990]: ERROR: extract_body: message body has lenght zero
Aug 28 17:34:42 sipod-sh /usr/local/sbin/ser[10990]: ERROR: fix_nated_sdp: cannot extract body from msg!
Aug 28 17:34:42 sipod-sh /usr/local/sbin/ser[10990]: ERROR: extract_body: message body has lenght zero
Aug 28 17:34:42 sipod-sh /usr/local/sbin/ser[10990]: ERROR: force_rtp_proxy2: can't extract body from the message

----- Original Message -----

From: Jiang zhou

Sent: Saturday, August 28, 2004 4:56 PM

Subject: [Serusers] rtpproxy problem

Does someone run ser-8.14 version with nathelper and rtpproxy successful?

Or does someone can run the latest cvs verion ser and rtpproxy successful?

In cvs version I have gotten the follow errors:

ug 28 16:32:00 sipod-sh /usr/local/sbin/ser[10654]: WARNING: no fifo_db_url given - fifo DB commands disabled!
Aug 28 16:32:05 sipod-sh /usr/local/sbin/ser[10659]: NOTICE:maxfwd:process_maxfwd_header: value 70 decreased to 16
Aug 28 16:32:16 sipod-sh /usr/local/sbin/ser[10660]: NOTICE:maxfwd:process_maxfwd_header: value 70 decreased to 16
Aug 28 16:32:19 sipod-sh /usr/local/sbin/ser[10662]: NOTICE:maxfwd:process_maxfwd_header: value 70 decreased to 16
Aug 28 16:32:19 sipod-sh /usr/local/sbin/ser[10662]: ERROR: alter_mediaip: you can't rewrite the same SDP twice, check your config!
Aug 28 16:32:19 sipod-sh /usr/local/sbin/ser[10662]: ERROR: fix_nated_sdp: can't alter media IP
Aug 28 16:32:19 sipod-sh /usr/local/sbin/ser[10662]: ERROR: alter_mediaip: you can't rewrite the same SDP twice, check your config!
Aug 28 16:32:20 sipod-sh /usr/local/sbin/ser[10660]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:32:20 sipod-sh /usr/local/sbin/ser[10659]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:32:20 sipod-sh /usr/local/sbin/ser[10662]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:32:25 sipod-sh /usr/local/sbin/ser[10659]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:32:25 sipod-sh /usr/local/sbin/ser[10660]: NOTICE:maxfwd:process_maxfwd_header: value 70 decreased to 16
Aug 28 16:32:26 sipod-sh /usr/local/sbin/ser[10661]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:34:39 sipod-sh /usr/local/sbin/ser[10660]: NOTICE:maxfwd:process_maxfwd_header: value 70 decreased to 16

In 8.14 version I have gotten follow errors:

ug 28 16:53:41 sipod-sh /usr/local/sbin/ser[10779]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:53:41 sipod-sh /usr/local/sbin/ser[10776]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:53:41 sipod-sh /usr/local/sbin/ser[10777]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:53:44 sipod-sh /usr/local/sbin/ser[10776]: WARNING: run_actions: null action list (rec_level=1)
Aug 28 16:53:46 sipod-sh /usr/local/sbin/ser[10777]: WARNING: run_actions: null action list (rec_level=1)

Can some give me a successful configure file and verion infromation?