[libnice] server reflexive address not in the candidates list

[Tom Chen]

From: tchen at extron.com
To: chentom60 at hotmail.com
Subject: server reflexive address not in the candidates list
Date: Mon, 14 Sep 2015 13:36:36 +0000









Hello,
 
It seems that libnice does not add server reflexive address (public address) to the candidate list. The stunclient (http://www.stunprotocol.org/) can show server’s NATed public ip address, but
 libnice only gathers local ipv6 & ipv4 addresses (test2). I am wondering if the public IP is used in connectivity test?
 
Tom
 
1.      
Test using stunclient
tao at ubuntu:~/stunserver/client$ ./stunclient stun.l.google.com 19302
Binding test: success
Local address: 10.113.54.60:45641
Mapped address: 204.96.168.3:45641 <<== our company’s public IP address
 
2.      
Test using simple-example
libnice-0.1.13/examples$ ./simple-example 0 stun.l.google.com 19302
Copy this line to remote client:
 
  JwYC UyZG127rWa2d0uewhX50KS 1,2013266431,fe80::20c:29ff:fe34:d0c8,53332,host 2,1019216383,fe80::20c:29ff:fe34:d0c8,0,host 3,1015022079,fe80::20c:29ff:fe34:d0c8,53900,host 4,2013266431,fe80::20c:29ff:fe34:d0be,46736,host 5,1019216383,fe80::20c:29ff:fe34:d0be,0,host
 6,1015022079,fe80::20c:29ff:fe34:d0be,39906,host 7,2013266431,fe80::20c:29ff:fe34:d0b4,48049,host 8,1019216383,fe80::20c:29ff:fe34:d0b4,0,host 9,1015022079,fe80::20c:29ff:fe34:d0b4,57212,host 10,2013266431,192.168.0.60,59944,host 11,1019216383,192.168.0.60,0,host
 12,1015022079,192.168.0.60,56461,host 13,2013266431,172.16.1.128,58664,host 14,1019216383,172.16.1.128,0,host 15,1015022079,172.16.1.128,56622,host 16,2013266431,10.113.54.60,47084,host 17,1019216383,10.113.54.60,0,host 18,1015022079,10.113.54.60,49199,host
 
The candidates are all local IP addresses:
1,2013266431,fe80::20c:29ff:fe34:d0c8,53332,host 
2,1019216383,fe80::20c:29ff:fe34:d0c8,0,host 
3,1015022079,fe80::20c:29ff:fe34:d0c8,53900,host 
4,2013266431,fe80::20c:29ff:fe34:d0be,46736,host 
5,1019216383,fe80::20c:29ff:fe34:d0be,0,host 
6,1015022079,fe80::20c:29ff:fe34:d0be,39906,host 
7,2013266431,fe80::20c:29ff:fe34:d0b4,48049,host 
8,1019216383,fe80::20c:29ff:fe34:d0b4,0,host 
9,1015022079,fe80::20c:29ff:fe34:d0b4,57212,host 
10,2013266431,192.168.0.60,59944,host 
11,1019216383,192.168.0.60,0,host 
12,1015022079,192.168.0.60,56461,host 
13,2013266431,172.16.1.128,58664,host 
14,1019216383,172.16.1.128,0,host 
15,1015022079,172.16.1.128,56622,host 
16,2013266431,10.113.54.60,47084,host 
17,1019216383,10.113.54.60,0,host 
18,1015022079,10.113.54.60,49199,host








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