[Nice] minimal example
Tiago Sá
tiagosa at di.uminho.pt
Fri Jan 13 06:49:24 PST 2012
Hi Eduardo,
let's stick to English then :)
I believe the first problem is that you should change the STUN/TURN info on
the code.
Try registering on http://numb.viagenie.ca/ and changing these two lines
according to that:
//NUMB server
// g_object_set (G_OBJECT (agent), "stun-server", "66.228.45.110",
"stun-server-port", 3478, NULL);
//set relay info
nice_agent_set_relay_info (agent, stream_id, 1, "66.228.45.110", 3478,
<yourusername>,<yourpassword>, NICE_RELAY_TYPE_TURN_UDP))
You should be getting three candidates on each agent.
I had some problems with that service too, so I installed a STUN/TURN
server on a publicly addressed machine.
PS: I'm sure that is not the cleanest code you have ever read :)
Cheers,
Tiago
On Fri, Jan 13, 2012 at 2:22 PM, Eduardo Bezerra <kdubezerra at gmail.com>wrote:
> hehe I think I can ask in Portuguese now, but then the discussion wouldn't
> be useful for many people
>
> so, I tested Tiago's code, which ran fine if both peers are on the same
> machine. However, I started two peers, each under a different NAT (one at
> home and one at the lab) and exchanged the candidates and credentials files
> through scp in the middle of the execution (thanks to the getchar() call).
> However, I got the following output then:
>
> "left" peer (lab):
> ==============================================
> WAIT UNTIL YOU CHANGE FILES (when I did the scp exchange of cands and
> creds files)
>
>
> READING CANDIDATES FROM FILE
> READ 2 CANDIDATES FROM rightCands.bin.
> PRINTING REMOTE CANDIDATES
>
> CANDIDADE NUMBER 0:
> NICE_CANDIDATE_TYPE_HOST
> NICE_CANDIDATE_TRANSPORT_UDP
>
> (process:62780): libnice-CRITICAL **: file address.c: line 259
> (nice_address_to_string): should not be reached
> ADDRESS: ?_?
>
> (process:62780): libnice-CRITICAL **: file address.c: line 259
> (nice_address_to_string): should not be reached
> BASE ADDRESS: ?_?
> PRIORITY: 2013266431
> STREAM_ID: 1
> COMPONENT_ID: 1
> FOUNDATION: 1
> USERNAME: (null)
> PASSWORD: (null)
> CANDIDADE NUMBER 1:
> NICE_CANDIDATE_TYPE_SERVER_REFLEXIVE
> NICE_CANDIDATE_TRANSPORT_UDP
>
> (process:62780): libnice-CRITICAL **: file address.c: line 259
> (nice_address_to_string): should not be reached
> ADDRESS: ?_?
>
> (process:62780): libnice-CRITICAL **: file address.c: line 259
> (nice_address_to_string): should not be reached
> BASE ADDRESS: ?_?
> PRIORITY: 1677721855
> STREAM_ID: 1
> COMPONENT_ID: 1
> FOUNDATION: 2
> USERNAME: (null)
> PASSWORD: (null)
> READING REMOTE CREDENTIALS FILE
>
> READING CREDENTIALS FROM FILE rightCreds.bin
> REMOTE USER: ZTS/
> REMOTE PWD: 8j74ohw6S68cwn/B4CnSpw
> (process:62780): libnice-DEBUG: Agent 0x10082e800: set_remote_candidates 1
> 1
> **
> ERROR:../client.c:210:cb_candidate_gathering_done: assertion failed:
> (nice_agent_set_remote_candidates(agent, stream_id, 1, remoteCands))
> Abort trap
> ==============================================
>
>
>
> right peer (home):
> ==============================================
> WRITING LOCAL CREDENTIALS TO FILE rightCreds.bin
> WAIT UNTIL YOU CHANGE FILES
>
>
> READING CANDIDATES FROM FILE
> READ 1 CANDIDATES FROM leftCands.bin.
> PRINTING REMOTE CANDIDATES
>
> CANDIDADE NUMBER 0:
> NICE_CANDIDATE_TYPE_HOST
> NICE_CANDIDATE_TRANSPORT_UDP
>
> (process:25636): libnice-CRITICAL **: file address.c: line 259
> (nice_address_to_string): should not be reached
> ADDRESS:
>
> (process:25636): libnice-CRITICAL **: file address.c: line 259
> (nice_address_to_string): should not be reached
> BASE ADDRESS:
> PRIORITY: 2013266431
> STREAM_ID: 1
> COMPONENT_ID: 1
> FOUNDATION: 1
> USERNAME: (null)
> PASSWORD: (null)
> READING REMOTE CREDENTIALS FILE
>
> READING CREDENTIALS FROM FILE leftCreds.bin
> REMOTE USER: wnj6
> REMOTE PWD: c5ufACXFyUowlh98uQoMBs
> (process:25636): libnice-DEBUG: Agent 0x1689eb0: set_remote_candidates 1 1
> **
> ERROR:../client.c:210:cb_candidate_gathering_done: assertion failed:
> (nice_agent_set_remote_candidates(agent, stream_id, 1, remoteCands))
> Abortado
> ==============================================
>
>
>
> Any hints?
>
>
> Eduardo
>
>
> On Fri, Jan 13, 2012 at 10:38 AM, Tiago Sá <tiagosa at di.uminho.pt> wrote:
>
>> Hi,
>>
>> thanks Youness for sharing. My application has evolved into a more
>> complex one, with some other features.
>> Anyway, if you need any explanation for these examples, I can do my best.
>>
>> Regards,
>> Tiago Sá
>>
>>
>> On Thu, Jan 12, 2012 at 9:24 PM, Youness Alaoui <
>> youness.alaoui at collabora.co.uk> wrote:
>>
>>> It's a question that I get often. I hope to get some time to write a
>>> proper
>>> tutorial with some example code, in the meantime, I suggest reading old
>>> threads
>>> on this mailing list.
>>> Here is one thread specifically about starting with libnice which
>>> explains how
>>> to do, what the usual bugs/misconceptions are and some sample code is
>>> also shared :
>>> http://lists.freedesktop.org/archives/nice/2011-October/000442.html
>>> http://lists.freedesktop.org/archives/nice/2011-October/000443.html
>>> http://lists.freedesktop.org/archives/nice/2011-November/000449.html
>>> http://lists.freedesktop.org/archives/nice/2011-November/000451.html
>>> http://lists.freedesktop.org/archives/nice/2011-November/000456.html
>>> http://lists.freedesktop.org/archives/nice/2011-November/000458.html
>>> http://lists.freedesktop.org/archives/nice/2011-December/000467.html
>>> http://lists.freedesktop.org/archives/nice/2011-December/000469.html
>>>
>>> For some reason, the list archives doesn't save messages sent with the
>>> list as
>>> CC instead of TO.. so I don't have the messages from Tiago, but you can
>>> read
>>> them inlined in my own answers to him.
>>> In one of his mails he sent a sample program which I've attached to this
>>> mail.
>>> It's a bit more complex than a simple "libnice hello world", but it
>>> should give
>>> you an idea on how to use the API in a real life example.
>>>
>>> Let me know if you have any further questions.
>>> Youness.
>>>
>>> On 01/12/2012 11:49 AM, Eduardo Bezerra wrote:
>>> > Oh and by the way, I've seen the NiceAgent api page... Although that
>>> helped a
>>> > lot in understand what idiomatic libnice uses, it doesn't really
>>> establish any
>>> > "connection"...
>>> >
>>> > On Thu, Jan 12, 2012 at 5:47 PM, Eduardo Bezerra <kdubezerra at gmail.com
>>> > <mailto:kdubezerra at gmail.com>> wrote:
>>> >
>>> > Hi, I've been studying libnice, and now also glib, since it's
>>> build on top
>>> > of it (it definitely feels much better than going with libevent,
>>> imho).
>>> > However, I still couldn't figure out what I have to do to make two
>>> peers
>>> > talk to each other.
>>> >
>>> > Could you guys provide some (link to a) few-lines, minimalistic
>>> example
>>> > application that traverses the nat with ice and then communicates
>>> with some
>>> > other endpoint? Maybe something like
>>> > this?
>>> http://content.gpwiki.org/index.php/SDL:Tutorial:Using_SDL_net
>>> >
>>> > Thanks a lot again!
>>> >
>>> > Eduardo
>>> >
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > Nice mailing list
>>> > Nice at lists.freedesktop.org
>>> > http://lists.freedesktop.org/mailman/listinfo/nice
>>>
>>>
>>> _______________________________________________
>>> Nice mailing list
>>> Nice at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/nice
>>>
>>>
>>
>>
>> --
>> Tiago Sá
>> Universidade do Minho, Braga - Portugal
>> www.tiagosa.com
>>
>>
>> _______________________________________________
>> Nice mailing list
>> Nice at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/nice
>>
>>
>
> _______________________________________________
> Nice mailing list
> Nice at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/nice
>
>
--
Tiago Sá
Universidade do Minho, Braga - Portugal
www.tiagosa.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/nice/attachments/20120113/422a1080/attachment.htm>
More information about the Nice
mailing list