14 Apr
2004
14 Apr
'04
10:28 p.m.
On 14-04 15:17, Chris Bookholt wrote:
After much head scratching and experimentation I found
a light at the end of the tunnel. The problem is I'm stuck in the tunnel and
don't seem to be getting anywhere near the light.
Stay away from the light ! It's not that bad on this side :-).
I've got SER running on a RH7.3 box (IP 10.3.5.1)
with pretty much default config (see ser.cfg below). There are two clients running MSN
Messenger 4.6. One client is running WinXP (IP 10.3.5.2) and the other is running Win2k
(IP 10.3.5.3). The builds of Messenger are 4.6.0073 (for XP) and 4.6.0083 (for 2k). Both
MSN clients are pointed at 10.3.5.1 for their "Communication Service."
When logging in, the XP client gets a password prompt as it should and can login using
the proper password.
However, when logging in from the Win2k client, as soon as I click to sign in, an error
message appears saying "Signing in to Communications Service failed because the
service is temporarily unavailable. Please try again later."
Here's the ngrep output:
-------------------------
]root(a)10.3.5.1]# ngrep -qd eth0 src 10.3.5.1 or src 10.3.5.3 or dst 10.3.5.1 or dst
10.3.5.3
U 10.3.5.3:1133 -> 10.3.5.1:5060
REGISTER sip:team3 SIP/2.0..Via: SIP/2.0/UDP 10.3.5.3:10829..Max-Forwards:
70..From: <sip:admin@team3>;tag=ff832bee93744680bca56666ad7c9e0a;epid=0d50f
b3ca3..To: <sip:admin@team3>..Call-ID: e85f11868c82477da20e852a4cb223d9@10.
3.5.3..CSeq: 1 REGISTER..Contact: <sip:10.3.5.3:10829>;methods="INVITE, MES
SAGE, INFO, SUBSCRIBE, OPTIONS, BYE, CANCEL, NOTIFY, ACK, REFER"..User-Agen
t: RTC/1.2.4949..Event: registration..Allow-Events: presence..Content-Lengt
h: 0....
U 10.3.5.1:5060 -> 10.3.5.3:10829
SIP/2.0 401 Unauthorized..Via: SIP/2.0/UDP 10.3.5.3:10829..From: <sip:admin
@team3>;tag=ff832bee93744680bca56666ad7c9e0a;epid=0d50fb3ca3..To: <sip:admi
n@team3>;tag=b27e1a1d33761e85846fc98f5f3a7e58.6d83..Call-ID: e85f11868c8247
7da20e852a4cb223d9@10.3.5.3..CSeq: 1 REGISTER..WWW-Authenticate: Digest rea
lm="team3",
nonce="407d8acfa56dbcb713c69e56e85c6a8280e2d02d"..Server: Sip E
Xpress router (0.8.12 (i386/linux))..Content-Length: 0..Warning: 392 10.3.5
.1:5060 "Noisy feedback tells: pid=15189 req_src_ip=10.3.5.3 req_src_port=
1133 in_uri=sip:team3 out_uri=sip:team3 via_cnt==1"....
-------------------------
My interpretation is that SER is just saying "Access denied," but I never got a
chance to input a password.
The messages are correct -- Windows messenger sends a REGISTER message
without digest credentials and SER says 401 Unauthorized (because the
credentials are missing). As the next step Windows Messenger is
supposed to ask you for username and password and re-send the
REGISTER, this time including digest credentials.
The real mystery is that it works properly from my
WinXP client. I've matched all the settings that I can find. I even tried changing
the IP address of the Win2k client to that of the WinXP client and trying to login with
the same username that worked on the XP client. Still I get the same service temp.
unavailable message. I've also tried uninstalling/reinstalling Messenger 4.6 on the
Win2k clients, but that didn't change anything either.
Windows messenger does not like when the digest realm is different from
To/From domain, this does not seem to be the case here, but I would
recommend you to try some real domain -- with dot inside, for example
team3.com.
If this does not help, then try to uninstall Windows Messenger and make
sure that you also uninstall all libraries (RTC ?) it is using, then
try to install exactly the same version as on WinXP (if possible).
I remember that some time ago somebody (Juha ?) told me that it is
possible to change some value in the register to disable the realm
validation, maybe this would be worth trying (I do not know more
details).
Jan.