[sr-dev] [kamailio/kamailio] to tags generation (#1164)

Dmitri Savolainen notifications at github.com
Fri Jun 23 18:40:27 CEST 2017


### Description
Not shure is this relevant issue.
according to rfc3261:

> When a tag is generated by a UA for insertion into a request or
>    response, it MUST be globally unique and cryptographically random
>    with at least 32 bits of randomness.

Kamailio has 16 instead and distribution is not good.
I look at tags for 419485 sip flows (different callid) and table below (top keys ordered by count): 
tag suffix; count for different flows with this suffix
ed54 6258
d118 5988
56ce 5923
a7a5 5220
de51 2150
82d8 1143
cf52 890
af92 740
7b5f 534
85f7 307
e553 163
7f7e 138
1d55 130
1afe 62
5a69 43
7caa 18
8474 18
9db2 18
11d3 18
f9ff 18
5420 17
dae6 17
908d 17
ede4 17
09ee 17
96be 17
25dc 17
af6d 16
2506 16
3da0 16
f161 16
1c29 16

#### SIP Traffic
To: <sip:039*101 at host:5071>;tag=555d2c3eafafcba8ac92b676e91bb6ed.58eb


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