Re: [BEHAVE] Errata 3467 on RFC 6062

[Magnus Westerlund <[e-mail]>]

Hi,

Any feedback on this Errata?

Cheers

Magnus Westerlund



On Tue, 2020-06-02 at 13:47 +0000, Magnus Westerlund wrote:
> Hi,
>  
> This is a question related to this RFC errata: 
> https://www.rfc-editor.org/errata_search.php?eid=3467
>  
> The Errata says the following:
> Section 5.2. says:
>    Otherwise, the server MUST initiate an outgoing TCP connection.  The
>    local endpoint is the relayed transport address associated with the
>    allocation.
>  
> It should say:
>    Otherwise, the server MUST initiate an outgoing TCP connection.  This 
>    connection MUST NOT be made using the relayed transport address 
>    associated with the allocation.
>  
> Notes:
> if you send connect request using the allocated port then port the will not be
> in listen mode and this will prevent incoming tcp connection on this port. 
> this will cause major problem while doing ice check. The effect is so bad that
> it may cause 97% call failure while using turn tcp behind nat.
> ---- End of Errata ---
> So I think this errata is wrong and should be rejected for that reason.
>  
> To my understanding there are no significant issue with having the TURN server
> at the point of allocation request occurring opening a TCP socket listener on
> particular relayed transport address (address1: port1). When the connection
> request occurs the TURN server will reuse the address1:port1 as source address
> and port for the outgoing TCP connection to the remote address, using a
> specific 5-tuple connected TCP socket. Thus, the reporters issue should not
> occur.
>  
> I appreciate feedback on this so that I don’t make a mistake.
>  
> Thanks
>  
> Magnus Westerlund
> TSV AD
>  
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-- 
Cheers

Magnus Westerlund 


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