In the routine add_call() in call.cpp there is a switch statement. Add your
own option to the list, for example:
case 'r':
count += snprintf(&call_id[count],
MAX_HEADER_LEN-count-1,"%u", (unsigned)rand());
break;
Would add %r to the functionality as a random number. It is a bit early to
look at the packet you are about to send, since we are setting up the class
at this point. However anything you are going to send is in theory available
because it is going to be based on other things. Substitute your function of
choice for rand() in my example or add some more - only the letters u, p and
s are currently used. If you want something a bit more cryptic use "%x"
instead of "%u" or use "%04x" etc.
Remember to make the complete Call-ID string (passed in the command line)
include the pid - so you get different Cal-ID on each run. Note there is
bound to be some trade off between Call-ID length and performance - the max
size used to be smaller but it looks like 2K characters now.
Have fun,
Peter
Peter Higginson
Newport Networks Ltd,
http://www.newport-networks.com/
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of William Quan
Sent: 17 September 2007 21:27
To: [email protected]
Subject: [Sipp-users] generating a random callid
Hi all,
I am new to SIPp, and I am wondering if there is a way to make the
call-id values more random.
Right now they appear sequential (or sorted) when using [call-id], which
tends to throw off my btree index in my DB.
Maybe md5 hash the current time and the from tag and to?
Any tips for a beginner to do this ?
Thanks,
Will
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