I cannot answer as I have no registrar (i.e. authentication server)
handy which would send the |qop| directive which is necessary to make
the client send the |nc| value. The answer may be found in the SIPp code
or by just trying. To avoid wasting time on the |ereg| handling of the
200 response before knowing whether it is worth it, it should be
sufficient to send three REGISTERs, the first one without the
[authetication ...] field (so you'd get the auth challenge in the 401),
the second one with the [authentication ...] field (to which you should
get a 200), and right after getting the 200 the third one with the
[authentication ...] field again to see in a pcap whether the |nc| value
is incremented or not (and not be surprised if the server responds with
"401 nonce has changed") to the last one.
P.
Dne 9.3.2017 v 23:40 William Shiau napsal(a):
Hi Pavel,
Thanks a lot for the info...
I am looking for the "Re-registration" script...
If the same [authentication username="12345...@private.ims.net"
password="test456"] is used
for re-registration, would the "nc" be incremented ???
Bill
On Thursday, March 9, 2017 4:19 PM, sindelka <sinde...@ttc.cz> wrote:
Hi Bill,
I'm not sure I understand the relationship between the |nc| value in
the |auth| header and the right time for re-registration...?
The information about remaining registration lifetime is normally
found in the |expires| parameter of the Contact uri in the |200|
response to the |REGISTER| request.
You can extract this value from there using |ereg |into a variable,
multiply it by 500 and store the result into another variable which
you then use in the pause statement ( |<pause variable=re_reg_timer/>|
). 500 because the value extracted from the Contact parameter is in
seconds and pause expects milliseconds, but the re-registration
request is usually sent at 1/2 of the remaining registration lifetime.
Pavel
Dne 9.3.2017 v 21:33 William Shiau napsal(a):
Hi,
Does anyone have the "Re-registration by SIPp" script using MD5 ???
I.e. How will SIPp generate the "Re-registration" after certain time
period (nc=0000002 in the Auth header)...
Bill
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