[OpenSIPS-Users] Does Media_Relay component implies in impossible direct media? (Sorry)

Tue Oct 20 15:59:04 CEST 2015

> On 20 Oct 2015, at 10:20, Rodrigo Pimenta Carvalho <pimenta at inatel.br> wrote:
> 
> Hi Adrian.
> 
> Sorry any inconvenience from my poor interpretation. I'm completely new to such NAT subjects.
> 
> I will consider:
> 
> If I don’t use STUN and when using ICE + MediaProxy, media will go directly between end-points behind the same NAT. The rest of the calls will go through media relay.
> 
> So, MediaProxy is not a substitute for a STUN server.
> 
> In this case, as I need direct media, I will give up of using MediaProxy and use just STUN technology.

STUN does not work, a large percentage of calls will fail by using it alone without a media relay. These things are complementary and you must use them all to cover 100% of the cases.

> 
> Hopefully, now I got the point!
> 
> Regards.
> 
> 
> 
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 RAMAL 979
> 
> 
> De: users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org> <users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org>> em nome de Adrian Georgescu <ag at ag-projects.com <mailto:ag at ag-projects.com>>
> Enviado: terça-feira, 20 de outubro de 2015 10:47
> Para: OpenSIPS users mailling list
> Assunto: Re: [OpenSIPS-Users] Does Media_Relay component implies in impossible direct media?
>  
> Read again what I wrote:
> 
> If you don’t use STUN and when using ICE, media will go directly between end-points behind the same NAT. The rest of the calls will go through media relay.
> 
> 
>> On 20 Oct 2015, at 07:48, Rodrigo Pimenta Carvalho <pimenta at inatel.br <mailto:pimenta at inatel.br>> wrote:
>> 
>> Ok Adrian.
>> 
>> Thank you too!
>> 
>> But I am still trying to find the answer for the following question, before deciding to install MediaProxy:
>> 
>> Can MediaProxy, by itself, without a separated STUN server, provide all necessary functionalities to my system get direct media between UACs?
>> 
>> 
>> 
>> Best regards.
>> 
>> 
>> RODRIGO PIMENTA CARVALHO
>> Inatel Competence Center
>> Software
>> Ph: +55 35 3471 9200 RAMAL 979
>> 
>> 
>> De: users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org> <users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org>> em nome de Adrian Georgescu <ag at ag-projects.com <mailto:ag at ag-projects.com>>
>> Enviado: segunda-feira, 19 de outubro de 2015 18:54
>> Para: OpenSIPS users mailling list
>> Assunto: Re: [OpenSIPS-Users] Does Media_Relay component implies in impossible direct media?
>>  
>> If you don’t use STUN and when using ICE, media will go directly between end-points behind the same NAT. The rest of the calls will go through media relay.
>> 
>> Adrian
>> 
>>> On 19 Oct 2015, at 11:03, Nabeel <nabeelshikder at gmail.com <mailto:nabeelshikder at gmail.com>> wrote:
>>> 
>>> ICE in general uses STUN (RFC 5245), however I do not use Mediaproxy myself so cannot comment on how it handles STUN.   Someone with Mediaproxy may be able to answer.
>>> On 19 Oct 2015 14:41, "Rodrigo Pimenta Carvalho" <pimenta at inatel.br <mailto:pimenta at inatel.br>> wrote:
>>> Ok Nabeel.
>>> 
>>> In my environment, I intend to have MediaProxy and all clients supporting ICE.
>>> However, in my environment/network doesn't exist a STUN server.
>>> 
>>> So, my last questions (before I start the MediaProxy installation procedures) about this subject are:
>>> 
>>> 1 -  Does MediaProxy work as a STUN server, or just as a TURN server?
>>> 
>>> 2 - Is it always necessary to provide a STUN server separately, even using the MediaProxy, if direct media is desired?
>>> 
>>> 3 - Let's suppose I will not provide a separately STUN server, in this case will the media always pass through the media relay,?
>>> 
>>> Thank you again!
>>> Best regards.
>>> 
>>> 
>>> RODRIGO PIMENTA CARVALHO
>>> Inatel Competence Center
>>> Software
>>> Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
>>> 
>>> 
>>> De: users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org> <users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org>> em nome de Nabeel <nabeelshikder at gmail.com <mailto:nabeelshikder at gmail.com>>
>>> Enviado: segunda-feira, 19 de outubro de 2015 10:40
>>> Para: OpenSIPS users mailling list
>>> Assunto: Re: [OpenSIPS-Users] Does Media_Relay component implies in impossible direct media?
>>>  
>>> Yes, that is how it should work.  ICE tries to connect directly first before trying other methods.  If direct connection fails, then it tries STUN, then media relay.  The clients have to support ICE too.
>>> 
>>> On 19 October 2015 at 11:35, Rodrigo Pimenta Carvalho <pimenta at inatel.br <mailto:pimenta at inatel.br>> wrote:
>>> Hi Nabeel.
>>> 
>>> Thank you very much for your answer.
>>> If I understood it well, while using MediaProxy, the clients may connect directly, but they may not too. ICE will decide it for me and I don't need to worry about it.
>>> Tell me if I got it, please.
>>> 
>>> Best regards.
>>> 
>>> 
>>> 
>>> RODRIGO PIMENTA CARVALHO
>>> Inatel Competence Center
>>> Software
>>> Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
>>> 
>>> 
>>> De: users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org> <users-bounces at lists.opensips.org <mailto:users-bounces at lists.opensips.org>> em nome de Nabeel <nabeelshikder at gmail.com <mailto:nabeelshikder at gmail.com>>
>>> Enviado: sábado, 17 de outubro de 2015 19:56
>>> Para: OpenSIPS users mailling list
>>> Assunto: Re: [OpenSIPS-Users] Does Media_Relay component implies in impossible direct media?
>>>  
>>> Rodrigo,
>>> It is the responsibility of ICE to determine in which situation it is best to establish a direct connection, versus use of STUN, versus use of a media relay.
>>> We cannot manually decide which clients will connect directly and which will not.
>>> On 17 Oct 2015 22:07, "Rodrigo Pimenta Carvalho" <pimenta at inatel.br <mailto:pimenta at inatel.br>> wrote:
>>> 
>>> Hi.
>>> 
>>> In my project, UACs should run direct media. RTP packets direct transmitted from each other.
>>> However, due to NAT presence, I'm thinking about to use MediaProxy. 
>>> 
>>> In this case, is it possible to get direct media after some UAC negotiations passing through the Media_Relay component, or is it impossible? That is, does the media will always pass through the Media_Relay host too?
>>> 
>>> Any hint will be very helpful!
>>> Thanks alot.
>>> 
>>> 
>>> 
>>> 
>>> RODRIGO PIMENTA CARVALHO
>>> Inatel Competence Center
>>> Software
>>> Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
>>> 
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