Hello, We are testing webrtc via mod_verto with the verto_communicator demo. After some initial troubles with certificates, we have it running from Chrome and Firefox. Very nice! But, when we leave the connection on for some time, the audio in the direction from the browser to a phone becomes increasingly longer. We have clocked ~11 seconds, if we leave it on long enough. The audio in the other direction has a normal IP telephony delay. We have not found any browser dependencies. The FreeSWITCH version is 1.10.1 (latest stable release). The phone end has been a Blink softphone, or a trunk from a Cisco UCM. The latter negotiated mulaw PCM with a 20 ms packet size. We have tried different server OS:es: * Windows Server 2019 gives the fastest buildup of delay. * Debian installed in a Windows Substrate for Linux gives a slower buildup of delay, but it does continuously increase. * CentOS virtualized in VMWare doesn't have any buildup of delay, and the delay is a normal IP telephony delay. * So, the more Windows, the worse... I have a Wireshark trace, and I can get a TLS stream from it. I can install a key file to decode the stream, but the configuration wants a protocol, and I don't know what to enter there. There are no dissectors for Websocket. So I'm at a bit of a loss, as to how to debug this. I don't see anything obvious in the freeswitch.log. Questions: * Has anyone used webrtc on Windows? * Has anyone had the same problem? * What can be done to debug the problem? Turn on some logging? We could package a Linux machine to our customers, but as everything else is on Windows, it would be nice to make it work. Best regards, Jaan
The long story short is: the more you separate a real-time application from the metal, the worse it gets. WSL does implement most (if not all) Linux kernel syscalls but ultimately translates into NT kernel specific implementations which will inherently induce some additional delay. KVM/Xen are reasonably good in terms of providing good timers for real-time applications, but even then, the difference compared against metal is noticeable, however, less of an issue for reasonable volume as well as other circumstances (primarily, if trans-coding is involved). Debian on metal is your best choice, though it should not be a showstopper over Xen or KVM if your circumstances are not too demanding. On Thu, 5 Dec 2019 at 14:35, Jaan Kaja <Jaan.Kaja@enghouse.com> wrote:
Hello,
We are testing webrtc via mod_verto with the verto_communicator demo. After some initial troubles with certificates, we have it running from Chrome and Firefox. Very nice!
But, when we leave the connection on for some time, the audio in the direction from the browser to a phone becomes increasingly longer. We have clocked ~11 seconds, if we leave it on long enough. The audio in the other direction has a normal IP telephony delay. We have not found any browser dependencies.
The FreeSWITCH version is 1.10.1 (latest stable release). The phone end has been a Blink softphone, or a trunk from a Cisco UCM. The latter negotiated mulaw PCM with a 20 ms packet size.
We have tried different server OS:es:
· Windows Server 2019 gives the fastest buildup of delay.
· Debian installed in a Windows Substrate for Linux gives a slower buildup of delay, but it does continuously increase.
· CentOS virtualized in VMWare doesn’t have any buildup of delay, and the delay is a normal IP telephony delay.
· So, the more Windows, the worse…
I have a Wireshark trace, and I can get a TLS stream from it. I can install a key file to decode the stream, but the configuration wants a protocol, and I don’t know what to enter there. There are no dissectors for Websocket. So I’m at a bit of a loss, as to how to debug this. I don’t see anything obvious in the freeswitch.log.
Questions:
· Has anyone used webrtc on Windows?
· Has anyone had the same problem?
· What can be done to debug the problem? Turn on some logging?
We could package a Linux machine to our customers, but as everything else is on Windows, it would be nice to make it work.
Best regards,
Jaan _________________________________________________________________________
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
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Hi! We are using Windows on production for years, also with verto. As I remember, we had similar problems. I think we solved with timer settings in verto.conf.xml to: <param name="timer-name" value="none"/> Try to set it and see if it works. Best regards, Gregor V V čet., 5. dec. 2019 ob 20:10 je oseba Jaan Kaja <Jaan.Kaja@enghouse.com> napisala:
Hello,
We are testing webrtc via mod_verto with the verto_communicator demo. After some initial troubles with certificates, we have it running from Chrome and Firefox. Very nice!
But, when we leave the connection on for some time, the audio in the direction from the browser to a phone becomes increasingly longer. We have clocked ~11 seconds, if we leave it on long enough. The audio in the other direction has a normal IP telephony delay. We have not found any browser dependencies.
The FreeSWITCH version is 1.10.1 (latest stable release). The phone end has been a Blink softphone, or a trunk from a Cisco UCM. The latter negotiated mulaw PCM with a 20 ms packet size.
We have tried different server OS:es:
· Windows Server 2019 gives the fastest buildup of delay.
· Debian installed in a Windows Substrate for Linux gives a slower buildup of delay, but it does continuously increase.
· CentOS virtualized in VMWare doesn’t have any buildup of delay, and the delay is a normal IP telephony delay.
· So, the more Windows, the worse…
I have a Wireshark trace, and I can get a TLS stream from it. I can install a key file to decode the stream, but the configuration wants a protocol, and I don’t know what to enter there. There are no dissectors for Websocket. So I’m at a bit of a loss, as to how to debug this. I don’t see anything obvious in the freeswitch.log.
Questions:
· Has anyone used webrtc on Windows?
· Has anyone had the same problem?
· What can be done to debug the problem? Turn on some logging?
We could package a Linux machine to our customers, but as everything else is on Windows, it would be nice to make it work.
Best regards,
Jaan _________________________________________________________________________
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 sales@freeswitch.com https://freeswitch.com
Official FreeSWITCH Sites https://freeswitch.com/oss https://freeswitch.org/confluence https://cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users https://freeswitch.com
-- Gregor Nanger *CTO* t./f.: 00386 (0) 7 6000 308/309 • m:. 00386 (0)41 756485 • Infomedia d.o.o. • Jerebova 3, Novo mesto, Slovenia • www.infomedia.si
Many thanks, Gregor! It now works like a charm on my bare metal workstation. Audio comes up fast after call setup, and the audio delay buildup is gone. How did you figure it out? Regarding virtualization, a Windows 2016 Server under Hyper-V still has the problem, but it works fine under VMWare. It may be that people have done more performance tweaking on the VMWare system. /Jaan From: FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> On Behalf Of Gregor Nanger Sent: den 5 december 2019 22:05 To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Subject: Re: [Freeswitch-users] Long increasing audio delay Hi! We are using Windows on production for years, also with verto. As I remember, we had similar problems. I think we solved with timer settings in verto.conf.xml to: <param name="timer-name" value="none"/> Try to set it and see if it works. Best regards, Gregor V V čet., 5. dec. 2019 ob 20:10 je oseba Jaan Kaja <Jaan.Kaja@enghouse.com<mailto:Jaan.Kaja@enghouse.com>> napisala: Hello, We are testing webrtc via mod_verto with the verto_communicator demo. After some initial troubles with certificates, we have it running from Chrome and Firefox. Very nice! But, when we leave the connection on for some time, the audio in the direction from the browser to a phone becomes increasingly longer. We have clocked ~11 seconds, if we leave it on long enough. The audio in the other direction has a normal IP telephony delay. We have not found any browser dependencies. The FreeSWITCH version is 1.10.1 (latest stable release). The phone end has been a Blink softphone, or a trunk from a Cisco UCM. The latter negotiated mulaw PCM with a 20 ms packet size. We have tried different server OS:es: • Windows Server 2019 gives the fastest buildup of delay. • Debian installed in a Windows Substrate for Linux gives a slower buildup of delay, but it does continuously increase. • CentOS virtualized in VMWare doesn’t have any buildup of delay, and the delay is a normal IP telephony delay. • So, the more Windows, the worse… I have a Wireshark trace, and I can get a TLS stream from it. I can install a key file to decode the stream, but the configuration wants a protocol, and I don’t know what to enter there. There are no dissectors for Websocket. So I’m at a bit of a loss, as to how to debug this. I don’t see anything obvious in the freeswitch.log. Questions: • Has anyone used webrtc on Windows? • Has anyone had the same problem? • What can be done to debug the problem? Turn on some logging? We could package a Linux machine to our customers, but as everything else is on Windows, it would be nice to make it work. Best regards, Jaan _________________________________________________________________________ The FreeSWITCH project is sponsored by SignalWire https://signalwire.com<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsignalwire.com&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128837874&sdata=2vYmoVX5q2FlvdaDNKGnlXf%2FC0tIwJKSb2KNwUms3%2BY%3D&reserved=0> 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<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsignalwire.community&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128847867&sdata=0MXfLho34J%2F%2FM7pZ47BBZ%2FcJe7M%2FJcjkcxEeSG5O3bw%3D&reserved=0> Professional FreeSWITCH Services sales@freeswitch.com<mailto:sales@freeswitch.com> https://freeswitch.com<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffreeswitch.com&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128847867&sdata=oNSJv4Vvoyndfu7Fl%2FkUKR0b8bXyhTj1fVvqV0K8bnA%3D&reserved=0> Official FreeSWITCH Sites https://freeswitch.com/oss<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffreeswitch.com%2Foss&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128857862&sdata=JMi9C4Xgb%2BVqRpxpk1xtGCP1GXNROhGXAe2lUuw14hc%3D&reserved=0> https://freeswitch.org/confluence<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffreeswitch.org%2Fconfluence&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128857862&sdata=cW5vuhxAW3dY1pwllOx3UnJ8nlV2dw5avvM5yA%2BThDE%3D&reserved=0> https://cluecon.com<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcluecon.com&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128867861&sdata=3qzXHBZjoSps0DFDSUf7xlgv59z7gh9bGMufXEmkdps%3D&reserved=0> FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org<mailto:FreeSWITCH-users@lists.freeswitch.org> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.freeswitch.org%2Fmailman%2Flistinfo%2Ffreeswitch-users&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128877853&sdata=P01NW4ExTyAKwBU0wBQ6072lC%2B5xwXQY27otvic6AaM%3D&reserved=0> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.freeswitch.org%2Fmailman%2Foptions%2Ffreeswitch-users&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128877853&sdata=4iX9ytedH8ro6ARsk6Bk13Lam0%2BHH7qv3vnMtOPmDpc%3D&reserved=0> https://freeswitch.com<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffreeswitch.com&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128887849&sdata=RQa8rnaNGCVeea5MbncMFJnCFXJmrgjaqewlvKO43qk%3D&reserved=0> -- Gregor Nanger CTO t./f.: 00386 (0) 7 6000 308/309 • m:. 00386 (0)41 756485 • Infomedia d.o.o. • Jerebova 3, Novo mesto, Slovenia • www.infomedia.si<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.infomedia.si&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128887849&sdata=tHjF0%2FyjEBTfifU1Cn7EueB%2B1mpof0ErDXpvcDg2O5Y%3D&reserved=0>
Great! I am greatfull to help community. I am great fan of Windows as I know it best. And also FS likes Windows. I am reading a lot how people have problems with building FS on Linux, but on Windows is matter of seconds. Also there are a lot of good libraries to connect FS ESL with .Net. Anyway, how did I figure it out? Unfortunately there are not a lot of us on Windows to brainstorm about, but leg in audio can be caused only because of timing. And this parameter was invented only because of Linux core. This was my assumption and it worked it out. But I would always suggest using bare metal when go voip and wants to go serious. Best regards, Gregor On Fri, 6 Dec 2019, 20:09 Jaan Kaja, <Jaan.Kaja@enghouse.com> wrote:
Many thanks, Gregor!
It now works like a charm on my bare metal workstation. Audio comes up fast after call setup, and the audio delay buildup is gone. How did you figure it out?
Regarding virtualization, a Windows 2016 Server under Hyper-V still has the problem, but it works fine under VMWare. It may be that people have done more performance tweaking on the VMWare system.
/Jaan
*From:* FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> *On Behalf Of *Gregor Nanger *Sent:* den 5 december 2019 22:05 *To:* FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> *Subject:* Re: [Freeswitch-users] Long increasing audio delay
Hi!
We are using Windows on production for years, also with verto.
As I remember, we had similar problems. I think we solved with timer settings in verto.conf.xml to:
<param name="timer-name" value="none"/>
Try to set it and see if it works.
Best regards, Gregor
V V čet., 5. dec. 2019 ob 20:10 je oseba Jaan Kaja <Jaan.Kaja@enghouse.com> napisala:
Hello,
We are testing webrtc via mod_verto with the verto_communicator demo. After some initial troubles with certificates, we have it running from Chrome and Firefox. Very nice!
But, when we leave the connection on for some time, the audio in the direction from the browser to a phone becomes increasingly longer. We have clocked ~11 seconds, if we leave it on long enough. The audio in the other direction has a normal IP telephony delay. We have not found any browser dependencies.
The FreeSWITCH version is 1.10.1 (latest stable release). The phone end has been a Blink softphone, or a trunk from a Cisco UCM. The latter negotiated mulaw PCM with a 20 ms packet size.
We have tried different server OS:es:
· Windows Server 2019 gives the fastest buildup of delay.
· Debian installed in a Windows Substrate for Linux gives a slower buildup of delay, but it does continuously increase.
· CentOS virtualized in VMWare doesn’t have any buildup of delay, and the delay is a normal IP telephony delay.
· So, the more Windows, the worse…
I have a Wireshark trace, and I can get a TLS stream from it. I can install a key file to decode the stream, but the configuration wants a protocol, and I don’t know what to enter there. There are no dissectors for Websocket. So I’m at a bit of a loss, as to how to debug this. I don’t see anything obvious in the freeswitch.log.
Questions:
· Has anyone used webrtc on Windows?
· Has anyone had the same problem?
· What can be done to debug the problem? Turn on some logging?
We could package a Linux machine to our customers, but as everything else is on Windows, it would be nice to make it work.
Best regards,
Jaan
_________________________________________________________________________
The FreeSWITCH project is sponsored by SignalWire https://signalwire.com <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsignalwire.com&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128837874&sdata=2vYmoVX5q2FlvdaDNKGnlXf%2FC0tIwJKSb2KNwUms3%2BY%3D&reserved=0> 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 <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsignalwire.community&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128847867&sdata=0MXfLho34J%2F%2FM7pZ47BBZ%2FcJe7M%2FJcjkcxEeSG5O3bw%3D&reserved=0>
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--
*Gregor Nanger*
*CTO* t./f.: 00386 (0) 7 6000 308/309 • m:. 00386 (0)41 756485 • Infomedia d.o.o. • Jerebova 3, Novo mesto, Slovenia • www.infomedia.si <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.infomedia.si&data=02%7C01%7Cjaan.kaja%40enghouse.com%7Cbc38d78ef9f04d39a97b08d779ca8a6d%7C427e40023c0240489e280eba58b331f4%7C1%7C0%7C637111783128887849&sdata=tHjF0%2FyjEBTfifU1Cn7EueB%2B1mpof0ErDXpvcDg2O5Y%3D&reserved=0>
_________________________________________________________________________
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 sales@freeswitch.com https://freeswitch.com
Official FreeSWITCH Sites https://freeswitch.com/oss https://freeswitch.org/confluence https://cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users https://freeswitch.com
participants (3)
-
Ciprian Dosoftei
-
Gregor Nanger
-
Jaan Kaja