Add support for configuring stun/turn servers with authentication.

GoogleCodeExporter commented 9 years ago

Right now, the WebRTC calls use a hardcoded configuration for stun, and don't 
support configuring turn or any authentication.

I'd like to add a new internal API to bbb-web, which will be called by the 
webrtc javascript code during call setup, and will return a list of configured 
stun and (optionally) turn servers with authentication. This API call will 
authenticate that the user is in a bigbluebutton session before returning 
anything.

The stun and turn server configuration can then be stored in a configuration 
file on the server separate from the JS code.

The configuration should support the following:
- configuring 0 or more stun servers, with urls like "stun:example.org" or 
"stuns:example.org:8000" (for example)
- configuring 0 or more turn servers, with urls like "turn:example.org" or 
"turns:example.org:443" (for example)
- optionally, either configure:
  - A static username and password to use for the turn servers (useful for testing, not recommended for production)
  - A shared secret for use generating a temporary username/password via the algorithm described in https://tools.ietf.org/html/draft-uberti-rtcweb-turn-rest-00 (compatible with rfc5766-turn-server or coturn)

The API should return a JSON document, formatted like the following:

{
    'stunServers': [
        'stun:example.org',
        'stuns:example.org'
    ],
    'turnServers': [
        {
            'urls': [
                'turn:a.example.org',
                'turn:b.example.org'
            ],
            'username': 'tempusername',
            'password': 'temppassword'
        }
    ]
}

Which directly maps to the stun and turn parameters used in the SIP.js library, 
see http://sipjs.com/api/0.6.0/ua_configuration_parameters/#stunservers and 
http://sipjs.com/api/0.6.0/ua_configuration_parameters/#turnservers

Original issue reported on code.google.com by calvin.walton@kepstin.ca on 12 Jan 2015 at 7:41

GoogleCodeExporter commented 9 years ago

Note that the default (shipped) configuration will continue to include only a 
single stun server, "stun:stun.freeswitch.org".

Reconfiguring freeswitch to use a different stun or turn server remains 
something that has to be manually done.

Original comment by calvin.walton@kepstin.ca on 12 Jan 2015 at 7:47

GoogleCodeExporter commented 9 years ago

Original comment by ffdixon@gmail.com on 30 Jan 2015 at 2:48

Added labels: Component-API

GoogleCodeExporter commented 9 years ago

This is good enhancment, if you need help testing would be glad to assist, we 
have configured a few stun/turn servers.

We have been able to get around some nasty firewalls by falling back to TURN 
and using tcp for media relaying if udp fails.

stunServers: "stun:stun.xxxx.com:19302",

turnServers: [ { 
urls:"turn:turn.xxxxx.com:3479?transport=udp",username:"dev09m",password:"7Ky%3d
" }, { 
urls:"turn:turn.xxxxx.com:3479?transport=tcp",username:"dev09m",password:"7Ky%3d
" }, 
{urls:"turn:turn2.xxxxx.com:3478?transport=tcp",username:"dev09m",password:"7Ky%
3d" }, 
{urls:"turn:turn2.xxxxx.com:3478?transport=udp",username:"dev09m",password:"7Ky%
3d" }  ]
    };

Also, currently working project that requires a per session unique user/pass 
for turn, so making api call dynamically is in progress.

Original comment by 207T...@gmail.com on 4 Feb 2015 at 4:29

GoogleCodeExporter commented 9 years ago

Thanks Stephen for the offer.  Once we make it available, we'd appreciate any 
testing you can do on it.

Original comment by ffdixon@gmail.com on 4 Feb 2015 at 8:01

GoogleCodeExporter commented 9 years ago

[deleted comment]

GoogleCodeExporter commented 9 years ago

Protocol Selection

We have had a copy of enterprise firewalls that required us to set 
transport=tcp in order for users to connect.  The example above shows 
specifying UDP and TCP as fallback. Not sure how this would be handled in 
config file.

Original comment by 207T...@gmail.com on 19 Feb 2015 at 4:47

GoogleCodeExporter commented 9 years ago

Building from master trying to get webrtc working.

I tried to comment out turn in bigbluebutton.properties, or leave them blank. 
Either way causes issues and bbb_web fails, or I get malformed URL with invalid 
turns in js.

Couple questions.   

1)How to you disable turn currently.
2) Assume I can add port numbers like :19302 etc to stun/turn in config file.
3) I see a turn1.secret is specified, and a username/password is generated, if 
I want to specify a fixed username/password like in comment above. Can I do 
this in config file, or just modify bbb-webrtc-bridge-sip like we do today.

Original comment by 207T...@gmail.com on 19 Feb 2015 at 1:02

GoogleCodeExporter commented 9 years ago

just built server from packages client 224, noticed no turn/stun properties in 
bigbluebutton.properties any more :)

But here  
/var/lib/tomcat7/webapps/bigbluebutton/WEB-INF/spring/turn-stun-servers.xml

its working good.

Original comment by 207T...@gmail.com on 19 Feb 2015 at 3:35

GoogleCodeExporter commented 9 years ago

We've removed it from the bigbluebutton.properties as you still need to edit 
turn-stun-servers.xml to remove/add a server. We thought just put them in one 
place so only one file needs to be edited.

You can pass "turn:1.2.3.4:9991?transport=udp" as the value for the url param. 
It just gets passed through.

The turn.secret is the shared secret between turn server and bbb-web. If you 
need a fixed password, you can implement another class based on 
https://github.com/bigbluebutton/bigbluebutton/blob/master/bigbluebutton-web/src
/java/org/bigbluebutton/web/services/turn/TurnServer.java to not generate a 
password. You can create an interface so we can swap whatever is needed.

Original comment by ritza...@gmail.com on 19 Feb 2015 at 4:48

GoogleCodeExporter commented 9 years ago

Richard, thank for explanation.  .90 is working great

Original comment by 207T...@gmail.com on 19 Feb 2015 at 5:02

GoogleCodeExporter commented 9 years ago

We've tested this internally and it looks like its working.  This will be in 
the next update to 0.9.0-beta.

Original comment by ffdixon@gmail.com on 16 Mar 2015 at 6:12

Changed state: Fixed

GoogleCodeExporter commented 9 years ago

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Original comment by wenglipi...@gmail.com on 25 Apr 2015 at 12:37

liuzhe02 / bigbluebutton

Add support for configuring stun/turn servers with authentication. #1863