[Users] Difference between Alias and Listen

[Max Gregorian]

Hi there,

Could someone please explain to me the actual difference between *Alias=*and
*Listen=*. I have read the documentation (
http://www.openser.org/dokuwiki/doku.php?id=openser_core_cookbook#alias and
http://www.openser.org/dokuwiki/doku.php?id=openser_core_cookbook#listen)
but still cannot distinguish between what the two functions are doing
differently.
Do I *need* to use both Alias and Listen at the same time in the config?

For example, if I have an openser server responsible for multiple domains *
sip1.foobar.com*, *sip2.foobar.com*, etc and also listening in on multiple
ports (*5060*, *5061*, *5062*), would I have to add the following to my
openser.cfg?

listen=udp:localhost:5060     /* Loopback */
listen=udp:localhost:5061
listen=udp:localhost:5062

listen=udp:192.168.1.101:5060  /* LAN IP of the server */
listen=udp:192.168.1.101:5061
listen=udp:192.168.1.101:5062

listen=udp:sip1.foobar.com:5060  /* Domain 1 */
listen=tcp:sip1.foobar.com:5060
listen=udp:sip1.foobar.com:5061
listen=tcp:sip1.foobar.com:5061
listen=udp:sip1.foobar.com:5062
listen=tcp:sip1.foobar.com:5062

listen=udp:sip2.foobar.com:5060  /* Domain 2 */
listen=tcp:sip2.foobar.com:5060
listen=udp:sip2.foobar.com:5061
listen=tcp:sip2.foobar.com:5061
listen=udp:sip2.foobar.com:5062
listen=tcp:sip2.foobar.com:5062


alias="sip1.foobar.com:5060"  /* Aliases for Domain 1 */
alias="sip1.foobar.com:5061"
alias="sip1.foobar.com:5062"

alias="sip2.foobar.com:5060"  /* Aliases for Domain 2 */
alias="sip2.foobar.com:5061"
alias="sip2.foobar.com:5062"

alias="111.222.333.444>"  /* IP OF SERVER */

Now if I understand correctly then *if (uri==myself) { }* should now be true
for each of these domains.
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