<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>Hi Guys, There is indeed an network interface that has no internet access and delays candidates gathering. After I used nice_agent_add_local() to manually add those interfaces with internet access, then the local candidates gathering is done immediately. Thank you for helping me on this issue! Tom > From: olivier.crete@collabora.com > To: felixschlitter@gmail.com; nice@lists.freedesktop.org > Date: Thu, 15 Oct 2015 12:01:43 +0100 > Subject: Re: [libnice] why it takes so long (3 second) to get Local candidates? > > Hello, > > libnice will do a STUN query from every local interface, in case you > have a multi-homed device, so if some of them are not Internet > connected, then it waits for all of them to timeout. You can just > ignore the state change and start sending candidates earlier if the > delay is unacceptable for your application. > > Olivier > > On Thu, 2015-10-15 at 18:25 +1300, Felix Schlitter wrote: > > 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@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@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 > > > > > > > > > > > > Statement Of Confidentiality: > > > > > > This electronic message transmission, and all attachments, contains > > > information from Extron Electronics which is confidential and > > > privileged. The information is for the exclusive viewing or use of > > > the intended recipient. If you are not the intended recipient, be > > > aware that any disclosure, copying, distribution or use of the > > > contents of this information is prohibited. If you have received > > > this electronic transmission in error, please notify the sender > > > immediately by a "reply to sender only" message and destroy all > > > electronic and hard copies of the communication, including > > > attachments. > > > > > > _______________________________________________ > > > nice mailing list > > > nice@lists.freedesktop.org > > > http://lists.freedesktop.org/mailman/listinfo/nice > > > > > _______________________________________________ > > nice mailing list > > nice@lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/nice > -- > Olivier Crête > olivier.crete@collabora.com > > > _______________________________________________ > nice mailing list > nice@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/nice </div></body> </html>