Canvas LMS Join Audio Problem

[Kafkas Kartalı]

Hello to everyone,

I use the BigblueButton plugin in Canvas LMS. I get error 1004 when I try to join the webinar with audio. When I join Webinar over Sakai LMS with the same server features, I do not get 1004 error.

Thanks for your help.

Translated by Google Translate.

Our respect.

[Chad Pilkey]

Are you self-hosting Canvas and BigBlueButton? If I remember correctly, Canvas sends a 20 digit voiceBridge instead of the normal 5 digits. You can double check this by joining a meeting, opening the browser's dev tools (F12), go to the Network tab, reload the page, check the voiceBridge in the "enter" API response. Once you've confirmed that 20 digits in the length, edit /opt/freeswitch/conf/dialplan/default/bbb_echo_test.xml and change the following:

expression="^9196$|^9196(\d{5,6})$"

to

expression="^9196$|^9196(\d{5,6}|\d{20,21})$"

[Kafkas Kartalı]

Hi Chad,

Firstly, thank you. I have followed the steps you mentioned, but when the participants choose the "listen only" option, they get the same error (1004).

Canvas LMS is hosted on our own servers (Ubuntu 16.04 / Bitnami Apps).

The voiceBridge value is 20 digits.

4 Temmuz 2019 Perşembe 19:51:10 UTC+3 tarihinde Chad Pilkey yazdı:

[Chad Pilkey]

It looks like there's also some regular expressions in /opt/freeswitch/conf/dialplan/default/bbb_conference.xml that need to be updated in the same way.

[Kafkas Kartalı]

Hi Chad,

Unfortunately, the same problem persists. Do I need to make changes to another file?

Thank you.

4 Temmuz 2019 Perşembe 23:10:47 UTC+3 tarihinde Chad Pilkey yazdı:

[Fred Dixon]

I did some Googling and found

  https://github.com/instructure/canvas-lms/issues/753

and

  https://groups.google.com/d/msg/bigbluebutton-setup/-VKYEWlDgIM/T797UkxkAwAJ

Regards,... Fred

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[Chad Pilkey]

Both those posts are out of date with the recent dialplan changes that we made. The two files that I mentioned are the only place where the length of the voice bridge is checked. Running "grep -r "d{5,6}" /opt/freeswitch/conf/" will show them.

Might just have to go to the FreeSWITCH logs to find out what FS is failing on. The log I'll need takes a bit to get the cleaned version. Need to get a fresh join attempt, then find the FS session for that attempt, and finally fetch the logs for that session.

1. Try to join the audio with a user name that you know, let it fail

2. Run `grep "firstname" /opt/freeswitch/var/log/freeswitch/freeswitch.log` to print out some of the messages

3. Find the alphanumeric ID at the start of the last line. It'll look something like "ee5157b3-49bf-4e30-97a6-e0fbeb3b2b0f"

4. Run `grep "sessionID" /opt/freeswitch/var/log/freeswitch/freeswitch.log | cleaned-fs-log.log`

5. Attach the log here

That log file will have the complete picture of what FreeSWITCH did when it handled the call and what caused it to reject the call.

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[Carl Gosselin]

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[Kafkas Kartalı]

Hi Fred,

Thanks for the solution. Currently it runs smoothly on BBB-2.2-Beta-12.

My changes:

sudo vim /opt/freeswitch/conf/dialplan/default/bbb_echo_test.xml

<include>

  <extension name="bbb_echo_test_direct">

    <condition field="destination_number" expression="^9196$|^9196(\d{5,20})$">

sudo vim /opt/freeswitch/conf/dialplan/default/bbb_conference.xml

<extension name="bbb_conferences_ws">

      <condition field="destination_number" expression="^(\d{5,20})$">

.

.

.

  <extension name="bbb_conferences">

       <condition field="destination_number" expression="^(\d{5,20})$">

Best regards.

5 Temmuz 2019 Cuma 15:43:11 UTC+3 tarihinde Fred Dixon yazdı:

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[Kafkas Kartalı]

Thank's Chad. 

It works fine with the following changes.

sudo vim /opt/freeswitch/conf/dialplan/default/bbb_echo_test.xml

<include>

  <extension name="bbb_echo_test_direct">

    <condition field="destination_number" expression="^9196$|^9196(\d{5,20})$">

sudo vim /opt/freeswitch/conf/dialplan/default/bbb_conference.xml

<extension name="bbb_conferences_ws">

      <condition field="destination_number" expression="^(\d{5,20})$">

.

.

.

  <extension name="bbb_conferences">

       <condition field="destination_number" expression="^(\d{5,20})$">

Best regards.

5 Temmuz 2019 Cuma 20:21:15 UTC+3 tarihinde Chad Pilkey yazdı:

[Chad Pilkey]

I would try the breakout rooms to make sure that they aren't creating a voice bridge with 21 digits.

[Adon Irani]

For me "Modules" deployment of BigBlueButton worked out of the box, but "Conferences" gave 1004 error.

Then following the above, "Conferences" worked but the "Modules" deployment of BigBlueButton broke.

Based on a previous post - https://groups.google.com/forum/#!searchin/bigbluebutton-setup/bbb_conference.xml%7Csort:date/bigbluebutton-setup/AZQtYgJ4XIw/Ue8qeIMlBQAJ - I did something slightly different:

in bbb_conference.xml i needed: (in both places)

<condition field="destination_number" expression="^(\d{5,6}|\d{20})$">

but in bbb_echo_test.xml: (as proposed in this thread)

<condition field="destination_number" expression="^9196$|^9196(\d{5,20})$">

My regex is rusty, so not entirely sure why the 5,20 didn't work in both cases.

Adon

[Chad Pilkey]

Anything that matches (\d{5,6}|\d{20}) should also match (\d{5,20}). The former says, "Match a string with a minimum of five digits and a maximum of 6 digits, or with exactly 20 digits". The latter says, "Match any string with a minimum of 5 digits and a maximum of 20 digits". The former is more exact because it will only match the exact two scenarios rather than everything in between.