[libnice] why it takes so long (3 second) to get Local candidates?

[Felix Schlitter]

I found that it can take a long time if I leave libnice to figure out my
local interfaces. If I tell which local address I want to use, it's a lot
faster. But that may have been because it tried to use a local interface
that had no internet connection. Maybe see if
`nice_agent_add_local_address` does anything for you.

On Thu, Oct 15, 2015 at 6:01 PM, tom chen <chentom60 at hotmail.com> wrote:

> Hello,
>
>
>
> I am using an external public STUN server, stun.l.google.com(74.125.194.127),
> port: 19302, to try /examples/simple-example.c.
>
>
>
> simple-example can get its public IP as expected from this STUN server, so
> the public STUN server really works. However, I notice that, somehow, it
> takes around 3 second to get local candidate list. Any idea why so long?
> Then I installed a local STUN server in our intranet, still has same delay.
> I am wondering if there is anything waiting for some events during the
> gathering but always timeout?
>
>
>
> Tom
>
>
>
> tao at ubuntu:~/workspace/libnice-0.1.13/examples$ ./simple-example 1
> 74.125.194.127 19302
>
> Copy this line to remote client:
>
>
>
>   vPRk owHFru8Z6Dx8hj9TKel7Zl
>
> 1,2013266431,fe80::20c:29ff:fe34:d0c8,42411,host
>
> 2,1019216383,fe80::20c:29ff:fe34:d0c8,0,host
>
> 3,1015022079,fe80::20c:29ff:fe34:d0c8,50240,host
>
> 4,2013266431,fe80::20c:29ff:fe34:d0be,51731,host
>
> 5,1019216383,fe80::20c:29ff:fe34:d0be,0,host
>
> 6,1015022079,fe80::20c:29ff:fe34:d0be,43916,host
>
> 7,2013266431,fe80::20c:29ff:fe34:d0b4,35004,host
>
> 8,1019216383,fe80::20c:29ff:fe34:d0b4,0,host
>
> 9,1015022079,fe80::20c:29ff:fe34:d0b4,51142,host
>
> 10,2013266431,192.168.0.60,33635,host
>
> 11,1019216383,192.168.0.60,0,host
>
> 12,1015022079,192.168.0.60,51301,host
>
> 13,2013266431,172.16.1.129,41734,host
>
> 14,1019216383,172.16.1.129,0,host
>
> 15,1015022079,172.16.1.129,46629,host
>
> 16,2013266431,10.113.54.60,41481,host
>
> 17,1019216383,10.113.54.60,0,host
>
> 18,1015022079,10.113.54.60,33328,host
>
> 19,1677722111,204.96.168.3,41481,srflx        ç Public IP candidates
>
> 20,847249919,204.96.168.3,0,srflx
>
> 21,843055615,204.96.168.3,33328,srflx
>
>
>
> Enter remote data (single line, no wrapping):
>
> > ^C
>
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