[Freeswitch-users] T.38 RTP Poll failed with error: 9 [Bad file descriptor]

[Brian West]

You're on an older release, we've fixed this already.

/b


On Thu, Dec 1, 2016 at 8:48 AM, Peter Steinbach <lists at telefaks.de> wrote:

> Hello,
>
> I have a strange error when proyy-media T38 faxes.
> Freeswitch is behind NAT (internal 192.168.12.248, external 5.10.xxx.yyy),
> other, receiving Server is also a Freeswitch
>
> A connection is made via G.711A, we hear the machines negociating, then we
> receive a T.38 reinvite from the remote Freeswitch server.
> The local ATA 30@ reponds with T38 SDP, Freeswitch is passing it to the
> remote site (and there the error occurs). See error in bold:
>
> 2016-12-01 15:28:55.534228 [DEBUG] sofia.c:6937 Channel
> sofia/internal/30 at 192.168.12.248 entering state [completing][200]
> 2016-12-01 15:28:55.534228 [DEBUG] sofia.c:6944 Duplicate SDP
> v=0
> o=30 8002 8001 IN IP4 192.168.12.99
> s=SIP Call
> c=IN IP4 192.168.12.99
> t=0 0
> m=image 5012 udptl t38
> a=T38FaxVersion:0
> a=T38MaxBitRate:14400
> a=T38FaxRateManagement:transferredTCF
> a=T38FaxMaxBuffer:500
> a=T38FaxMaxDatagram:500
> a=T38FaxUdpEC:t38UDPRedundancy
>
> 2016-12-01 15:28:55.534228 [DEBUG] sofia.c:6937 Channel
> sofia/internal/30 at 192.168.12.248 entering state [ready][200]
> 2016-12-01 15:28:55.554501 [DEBUG] mod_sofia.c:2088 Responding with 200
> [OK]
> 2016-12-01 15:28:55.554501 [DEBUG] switch_core_media.c:8955
> sofia/external/0403801xxxxxxx image media sdp:
> v=0
> o=FreeSWITCH 1480572959 1480572961 IN IP4 5.10.xxx.yyy
> s=FreeSWITCH
> c=IN IP4 5.10.xxx.yyy
> t=0 0
> m=image 29544 udptl t38
> a=T38FaxVersion:0
> a=T38MaxBitRate:14400
> a=T38FaxRateManagement:transferredTCF
> a=T38FaxMaxBuffer:500
> a=T38FaxMaxDatagram:500
> a=T38FaxUdpEC:t38UDPRedundancy
>
> *2016-12-01 15:28:55.554501 [ERR] switch_rtp.c:6420 Poll failed with
> error: 9 [Bad file descriptor]*
> 2016-12-01 15:28:55.554501 [DEBUG] switch_ivr_bridge.c:712
> sofia/external/0403801xxxxxxx ending bridge by request from read function
> 2016-12-01 15:28:55.554501 [DEBUG] switch_ivr_bridge.c:785 BRIDGE THREAD
> DONE [sofia/external/0403801xxxxxxx]
> 2016-12-01 15:28:55.554501 [NOTICE] switch_ivr_bridge.c:889 Hangup
> sofia/external/0403801xxxxxxx [CS_EXCHANGE_MEDIA] [NORMAL_CLEAR
>
> Some background Info:
>
>    - Freeswitch runs in LXC environment
>    - Freeswitch runs as non-priviledged user.
>
> What is the cause of this? Maybe a problem with port 29544? But port 29544
> was already previously used with G.711A.
>
> --
> With kind regards
> Peter Steinbach
>
> Telefaks Services GmbHmailto:lists <lists> (att) telefaks.de
> Internet: www.telefaks.de
>
>
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-- 

*Brian West*
brian at freeswitch.org


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