[Freeswitch-users] One-way audio but not video on 10.4

Thu Sep 17 21:33:13 UTC 2020

If they start sending to us we will auto -adjust to the right ip after a few packets.  Its a bit slower to set up but should work.

> On Sep 15, 2020, at 7:36 PM, David P <davidswalkabout at gmail.com> wrote:
> 
> Although we have STUN+TURN coturn (and FS) deployed in Oregon, a verto user in San Francisco today made a call in which only (private) host candidates were in the offer bundle SDP.
> 
> They use IT-managed Ethernet, so any slowness in getting STUN is probably in their IT management of the connection...and not something we can do anything about unless our FS can support peer-reflexive candidates.
> 
> They tell me their network has worked fine with Zoom, which is grating to hear. Is there any prospect of FS supporting peer-reflexive candidates?
> 
> On Tue, Sep 1, 2020 at 12:22 AM <freeswitch-users-request at lists.freeswitch.org <mailto:freeswitch-users-request at lists.freeswitch.org>> wrote:
> ---------- Forwarded message ----------
> From: David P <davidswalkabout at gmail.com <mailto:davidswalkabout at gmail.com>>
> To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org <mailto:freeswitch-users at lists.freeswitch.org>>
> Cc: 
> Bcc: 
> Date: Mon, 31 Aug 2020 08:36:05 +1200
> Subject: Re: [Freeswitch-users] One-way audio but not video on 10.4
> I strongly suspect the problem is due to FS choosing a different port than is offered. I've seen this a few times by comparing the offer SDP a=candidate entries with the address:port in FS log entries containing 'Choose rtp'. This won't work if the user is behind a firewall that allows incoming response only through ports opened for outgoing requests.
> 
> Another thing I wonder about is when verto provides a BUNDLE offer, should it use the same address and port for both audio and video. I think I've seen that it doesn't, but maybe BUNDLE doesn't require it.
> 
> --------- Forwarded message ----------
> From: Nathan Stratton <nathan at robotics.net <mailto:nathan at robotics.net>>
> To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org <mailto:freeswitch-users at lists.freeswitch.org>>
> Cc: 
> Bcc: 
> Date: Sat, 29 Aug 2020 11:13:24 -0400
> Subject: Re: [Freeswitch-users] One-way audio but not video on 10.4
> Looks like your client is not hitting a stun server to get the public IP address, however, I have been wondering why it's not possible to make FreeSWITCH work without using STUN on the client as long as FreeSWITCH is on a public IP. 
> 
> ><>
> nathan stratton
> 
> 
> On Sat, Aug 29, 2020 at 3:00 AM David P <davidswalkabout at gmail.com <mailto:davidswalkabout at gmail.com>> wrote:
> The client is current verto running on current Chrome/Win10.
> 
> The client's SDP shows srflx and relay candidates from Twilio at same network cost as the "private" host candidates, and FSv10.4 chooses the host candidates.
> 
> ---------- Forwarded message ----------
> From: Mike Jerris <mike at freeswitch.org <mailto:mike at freeswitch.org>>
> 
> If client still isn’t putting in non rfc1918 candidates in audio you need to figure out why that is first.
> 
>> On Aug 26, 2020, at 7:17 PM, David P <davidswalkabout at gmail.com <mailto:davidswalkabout at gmail.com>> wrote:
>> 
>> I've introduced Twilio STUN and TURN to our iceServers since then. All have the same network cost in the SDP and FSv10.4 chooses a host. Verto reports the remote stream arrived but getStats shows zero audio bytes in or out, and it's silent to our user.  I applied a display filter using our Freeswitch's public IP ip.src == 52.xx.yy.zz or ip.dst == ip.src == 52.xx.yy.zz and in addition to TLS I see some TCP ACKs from our user's 10.0.0.189 but I don't know what else to look for.
>> 
>> 
>> ---------- Forwarded message ----------
>> From: Mike Jerris <mike at freeswitch.org <mailto:mike at freeswitch.org>>
>> To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org <mailto:freeswitch-users at lists.freeswitch.org>>
>> Cc: 
>> Bcc: 
>> Date: Wed, 26 Aug 2020 16:19:56 -0400
>> Subject: Re: [Freeswitch-users] One-way audio but not video on 10.4
>>  
>> Configure stun in your client so you get proper candidates that are reachable.
>> 
>>> On Aug 19, 2020, at 6:18 PM, David P <davidswalkabout at gmail.com <mailto:davidswalkabout at gmail.com>> wrote:
>>> 
>>> Yesterday I had a verto call in which the <video> contained a remote echo (which is how we configure it) but there was no audio out nor in (confirmed by getStats showing zero audio bytes out or in).
>>> 
>>> I was using:
>>> FreeSWITCH Version 1.10.4-release+git~20200805T110119Z~133fc2c870~64bit (git 133fc2c 2020-08-05 11:01:19Z 64bit)
>>> from Chrome84/Win10
>>> 
>>> I noticed the video candidates included a relay but the audio ones didn't:
>>> 
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e m=audio 62058 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e c=IN IP4 192.168.208.1
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=rtcp:9 IN IP4 0.0.0.0
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:1252570982 1 udp 2122260223 192.168.208.1 62058 typ host generation 0 network-id 1
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:854729925 1 udp 2122194687 172.20.4.169 62059 typ host generation 0 network-id 2 network-cost 10
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:69946262 1 tcp 1518280447 192.168.208.1 9 typ host tcptype active generation 0 network-id 1
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:2087835701 1 tcp 1518214911 172.20.4.169 9 typ host tcptype active generation 0 network-id 2 network-cost 10
>>> 
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e m=video 13143 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 122 127 121 125 107 108 109 124 120 123 119 114 115 116
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e c=IN IP4 35.160.47.89
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=rtcp:9 IN IP4 0.0.0.0
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:1252570982 1 udp 2122260223 192.168.208.1 62060 typ host generation 0 network-id 1
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:854729925 1 udp 2122194687 172.20.4.169 62061 typ host generation 0 network-id 2 network-cost 10
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:69946262 1 tcp 1518280447 192.168.208.1 9 typ host tcptype active generation 0 network-id 1
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:2087835701 1 tcp 1518214911 172.20.4.169 9 typ host tcptype active generation 0 network-id 2 network-cost 10
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e a=candidate:3112167340 1 udp 25042943 35.jj.kk.mm <http://35.jj.kk.mm/> 13143 typ relay raddr 210.55.134.98 rport 53504 generation 0 network-id 2 network-cost 10
>>> 
>>> The relay was chosen for video, and it appeared that the same candidate was going to be chosen for audio, but then an "AUDIO RTP" suggests it chose a private IPv4. And it seems that private IPv4 wasn't treated as a peer-reflexive candidate, so the media couldn't be routed...
>>> 
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e 2020-08-19 05:14:33.753568 [DEBUG] switch_core_media.c:4338 Choose rtp candidate, index 2, 35.jj.kk.mm:13143 <http://35.jj.kk.mm:13143/>
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e 2020-08-19 05:14:33.753568 [DEBUG] switch_core_media.c:4104 verto.rtc/1200_a6dd33a4-1def-447c-a62a-ae807bb92da6_v-1*s-4 choosing family v4
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e 2020-08-19 05:14:33.753568 [DEBUG] switch_core_media.c:4349 Choose same candidate, index 0, for rtcp based on rtcp-mux attribute 35.jj.kk.mm:13143 <http://35.jj.kk.mm:13143/>
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e 2020-08-19 05:14:33.753568 [DEBUG] switch_core_media.c:4401 setting remote video ice addr to index 2 35.jj.kk.mm:13143 <http://35.jj.kk.mm:13143/> based on candidate
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e 2020-08-19 05:14:33.753568 [DEBUG] switch_core_media.c:4436 Setting remote rtcp video addr to 35.jj.kk.mm:13143 <http://35.jj.kk.mm:13143/> based on candidate
>>> f6e23797-4ad2-b761-2a6d-97846c122d7e 2020-08-19 05:14:33.753568 [DEBUG] switch_core_media.c:8663 AUDIO RTP [verto.rtc/1200_a6dd33a4-1def-447c-a62a-ae807bb92da6_v-1*s-4] 10.0.0.100 port 26610 -> 192.168.208.1 port 62058 codec: 111 ms: 20
>>> 
>>> Am I interpreting the log correctly?
>>> 
>>> Is there a way to avoid this?
>>> 
>>> Note that in /usr/local/freeswitch/conf/autoload_configs/acl.conf.xml we already deny private IPv4 (although I think we should allow them so they could be used peer-reflexively):
>>>     <list name="disallow-privateIPv4" default="allow">
>>>         <node type="deny" host="10.0.0.0" mask="255.0.0.0"/>
>>>         <node type="deny" host="172.16.0.0" mask="255.240.0.0"/>
>>>         <node type="deny" host="192.168.0.0" mask="255.255.0.0"/>
>>>     </list>
> 
> 
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> 
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> Build your next product on our scalable cloud platform.
> 
> Join our online community to chat in real time https://signalwire.community
> 
> Professional FreeSWITCH Services
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> https://freeswitch.com
> 
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> 
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