Re: keeping videos on another server

[jox joe]

Thank you for your reply.

I can see the following:


>File systems
> If files and recordings using the same physical folders the files and
recordings will be available for each node. You can do this using Samba or
NFS, for example. For using NFS do the following:
>
> To ease upgrade process set OM data dir to some external folder: for
ex. /opt/omdata
> Install NFS to the data server. In the file /etc/exports add the
following lines:
>
>   /opt/omdata 10.1.1.2(rw,sync,no_subtree_check,no_root_squash)
>
>
> Here 10.1.1.2 - is node ip for NFS remote access. Add these lines for
all nodes except node with folders.
> Install NFS common tools to other nodes. In the file /etc/fstab do
the following:
>
> 10.1.1.1:/opt/omdata /opt/omdata nfs timeo=50,hard,intr
>
>
> Here 10.1.1.1 – data server ip. And run the command:
>
> mount -a

I can't install NFS on the Server 2 because it is not under my control.
It is just a normal webserver that can store mp4 files and provide a link
that
points to this mp4.
Example: https://server2/videos/video_01.mp4


The following JSON shows a sample request for the creation of a
PlayerEndpoint Media Element:

{  "jsonrpc": "2.0",  "id": 1,  "method": "create",  "params": {
"type": "PlayerEndpoint","constructorParams": {  "pipeline":
"6829986",  "uri": "http://host/app/video.mp4";},
"sessionId": "c93e5bf0-4fd0-4888-9411-765ff5d89b93"  }}

The uri above should be this:https://server2/videos/video_01.mp4

The browser passes now a subpath to the OM application server

like this:

files/id4725&uid45454-5454-56565&ruid4554-55454&uid...

id4725 is the file id in the OM database

My question:

Is it possible to pass this different link
(https://server2/videos/video_01.mp4
) without installing anything on server 2.

Thank you.





















Maxim Solodovnik  ezt írta (időpont: 2023. okt. 19.,
Cs, 9:45):

> Hello,
>
> On Thu, 19 Oct 2023 at 04:55, jox joe  wrote:
> >
> > Hello Maxim,
> >
> > Ubunbtu Server 1:
> > OM is running here
> >
> > Webserver 2:
> > (not an OM clustered server)
> > I store the mp4 video here.
> >
> > I want to put the video on a whiteboard in OM.
> >
> > This means the Kurento Media Server accesses
> > the video source stored on Webserver 2.
> >
> > My question:
> > Is this possible?
>
> sure :)
> you can set up nfs
> for ex. as described here:
> https://openmeetings.apache.org/Clustering.html#file-systems
>
> >
> > Thank you.
> >
>
>
> --
> Best regards,
> Maxim
>

keeping videos on another server

[jox joe]

Hello Maxim,

Ubunbtu Server 1:
OM is running here

Webserver 2:
(not an OM clustered server)
I store the mp4 video here.

I want to put the video on a whiteboard in OM.

This means the Kurento Media Server accesses
the video source stored on Webserver 2.

My question:
Is this possible?

Thank you.

Re: Storing some pictures on another, normal web server with a link in OM?

[jox joe]

I think it will work properly but I could not test completely
because I saw the following message:

it violates the following content security policy directive
"connect-src 'self' wss://..."
*
I know this is a Cross-Origin Resource Sharing (CORS)
feature. I should specify the external site but I do not
know how to do it in OM 6. Could you help  me?
Than you.


jox joe  ezt írta (időpont: 2023. ápr. 20., Cs, 20:52):

> Thank you Maxim.
>
> Maxim Solodovnik  ezt írta (időpont: 2023. ápr.
> 18., K, 4:43):
>
>> Hello Joe,
>>
>> sorry for the late response
>>
>> On Thu, 6 Apr 2023 at 10:33, jox joe  wrote:
>> >
>> > Yes I mean placing external image on the whiteboard.
>>
>> WB can handle external images
>> BUT this will require modification of OM source code
>> (additional type of WB object should be added)
>>
>>
>>
>> > External image means that it is not on the OM server
>> > but on another, normal webserver (for example Apache Web Server) where
>> OM is not installed.
>> > Both servers run with SSL Certificate (https).
>> > Thank you Maxim.
>> >
>> > Maxim Solodovnik  ezt írta (időpont: 2023. ápr.
>> 6., Cs, 1:19):
>> >>
>> >> Hello Joe,
>> >>
>> >> By: "use a remote link in OM" do you mean: "put external image to wb"?
>> >> Or something else?
>> >>
>> >> from mobile (sorry for typos ;)
>> >>
>> >>
>> >> On Thu, Apr 6, 2023, 01:17 jox joe  wrote:
>> >>>
>> >>> Hello Maxim,
>> >>>
>> >>> I'd like to store some pictures (not all) on another, normal
>> webserver without uploading
>> >>> them to the OM server and use a remote link in OM.
>> >>> Is this possible? (with or without recompiling the application)
>> >>> Thank you.
>> >>> joe
>>
>>
>>
>> --
>> Best regards,
>> Maxim
>>
>

Re: Storing some pictures on another, normal web server with a link in OM?

[jox joe]

Thank you Maxim.

Maxim Solodovnik  ezt írta (időpont: 2023. ápr. 18.,
K, 4:43):

> Hello Joe,
>
> sorry for the late response
>
> On Thu, 6 Apr 2023 at 10:33, jox joe  wrote:
> >
> > Yes I mean placing external image on the whiteboard.
>
> WB can handle external images
> BUT this will require modification of OM source code
> (additional type of WB object should be added)
>
>
>
> > External image means that it is not on the OM server
> > but on another, normal webserver (for example Apache Web Server) where
> OM is not installed.
> > Both servers run with SSL Certificate (https).
> > Thank you Maxim.
> >
> > Maxim Solodovnik  ezt írta (időpont: 2023. ápr.
> 6., Cs, 1:19):
> >>
> >> Hello Joe,
> >>
> >> By: "use a remote link in OM" do you mean: "put external image to wb"?
> >> Or something else?
> >>
> >> from mobile (sorry for typos ;)
> >>
> >>
> >> On Thu, Apr 6, 2023, 01:17 jox joe  wrote:
> >>>
> >>> Hello Maxim,
> >>>
> >>> I'd like to store some pictures (not all) on another, normal webserver
> without uploading
> >>> them to the OM server and use a remote link in OM.
> >>> Is this possible? (with or without recompiling the application)
> >>> Thank you.
> >>> joe
>
>
>
> --
> Best regards,
> Maxim
>

Re: Storing some pictures on another, normal web server with a link in OM?

[jox joe]

Yes I mean placing external image on the whiteboard.
External image means that it is not on the OM server
but on another, normal webserver (for example Apache Web Server) where OM
is not installed.
Both servers run with SSL Certificate (https).
Thank you Maxim.

Maxim Solodovnik  ezt írta (időpont: 2023. ápr. 6.,
Cs, 1:19):

> Hello Joe,
>
> By: "use a remote link in OM" do you mean: "put external image to wb"?
> Or something else?
>
> from mobile (sorry for typos ;)
>
>
> On Thu, Apr 6, 2023, 01:17 jox joe  wrote:
>
>> Hello Maxim,
>>
>> I'd like to store some pictures (not all) on another, normal webserver
>> without uploading
>> them to the OM server and use a remote link in OM.
>> Is this possible? (with or without recompiling the application)
>> Thank you.
>> joe
>>
>

Storing some pictures on another, normal web server with a link in OM?

[jox joe]

Hello Maxim,

I'd like to store some pictures (not all) on another, normal webserver
without uploading
them to the OM server and use a remote link in OM.
Is this possible? (with or without recompiling the application)
Thank you.
joe

Re: OM6 testing _ assigning a set of whiteboards to one room

[jox joe]

OM 6.2.0 (server RAM: 6 Gbyte)
Scenario:
A teacher/lecturer wants to prepare a complete session of 60 minutes.
He prepares 20 whitebords for this. In this case one whiteboard contains
one slide.
He needs 20 whiteboards with completed content in the given classroom.
The content was prepared with OM and includes text, pictures and videos.
The whiteboards were saved and the list of whiteboards for the given
classroom was generated properly through the OM user interface (see above);
The  list of whitebords is stored in the "room_file" database table.
If we want to put the prepared whitebords on to the wall we need to restart
OM-Tomcat. When we enter the given room the SQL database content
will be copied into a "json" database which is used by the room
subsequently.

This is the result of my testing:

1. If any shape (and its control elements!) is outside the slide boundary
this
scenario is not working: some whitebords are empty.

2. Even if all shapes are placed properly there is a timing problem
during this conversion process: SQL --> json.
Some whitebords were empty.
I modified the source like this and after that it worked roperly:
WbPanel.java:

for (  JSONObject o : wb.list()  )
{

int b = 0; //inserted line

while (b < 1000) //inserted line
{ //inserted line
b++; //inserted line
} //inserted line

arr.put(addFileUrl(cl, wbs.getUid(), o))

log.debug ( addFileUrl(cl, wbs.getUid(), o) ); // //inserted line

}//END for (  JSONObject o : wb.list()  )

Although this is not the correct solution it shows the nature
of the problem. This was confirmed by the "log.debug" output
in the "openmeetings.log".

Thank you for your attention.
I'm waiting for your feedback/confirmation.

Joe

NOTES:
I improved the OM WB Editor in a way that it is easier to generate content.
Example: shape cloning

OM 6.2.0 is more stable than the previous versions.



jox joe  ezt írta (időpont: 2022. jan. 11., K, 14:29):

> >did you add all WBs via "Files" section?
> ANSWER: yes
> >have you specified different WB index?
> ANSWER: yes, I assigned unique indices
>
> ADDITIONAL TESTING:
> STEP 1:
> I added 13 whiteboards in the "Files"section as stated above
> Indices:
> 0,1,2,3,4,5,6,7,8,9,10,11,12
>
> STEP 2:
> Stop/start OM-Tomcat
>
> STEP 3:
> Starting the client.
> Missing indeces:
> 4, 8, 10
>
> STEP 4:
> Stop/start OM-Tomcat
>
> STEP 5:
> Starting the client.
> Missing indeces:
> 6,4
>
> STEP 6:
> Stop/start OM-Tomcat
>
> STEP 7:
> Starting the client.
> Missing indeces:
> 5,8,9
>
> STEP 8:
> Stop/start OM-Tomcat
>
> STEP 9:
> Starting the client.
> Missing indeces:
> 12
>
> NOTE:
> Missing index always means that
> the whiteboard is visible but it's empty.
>
> EVALUATION:
> The probability is rather high
> that this is not a database inconsistency
> problem.
>
> ACTION PLAN:
> I'm going to install a clean and latest
> OM on a local Ubuntu server in one or two weeks.
>
> If you can tell me which is the relevant Java module
> maybe I can test it earlier than that.
>
> This was the room table for my test:
> +-+-++-+
> | id  | room_id | wb_idx | file_id |
> +-+-++-+
> | 1   | 2   | 2  | 125 |
> | 2   | 9   | 1  | 126 |
> | 89  | 11  | 0  | 151 |
> | 90  | 11  | 1  | 152 |
> | 91  | 11  | 2  | 153 |
> | 92  | 11  | 3  | 154 |
> | 93  | 11  | 4  | 155 |
> | 94  | 11  | 5  | 156 |
> | 98  | 11  | 9  | 162 |
> | 99  | 11  | 10 | 163 |
> | 100 | 11  | 11 | 165 |
> | 101 | 11  | 12 | 166 |
> | 102 | 11  | 13 | 167 |
> | 103 | 11  | 8  | 161 |
> | 104 | 11  | 14 | 168 |
> | 105 | 11  | 15 | 169 |
> | 106 | 11  | 16 | 170 |
> | 107 | 11  | 17 | 171 |
> | 108 | 11  | 18 | 172 |
> | 109 | 11  | 19 | 173 |
> | 130 | 7   | 0  | 198 |
> | 131 | 7   | 1  | 199 |
> | 132 | 7   | 2  | 201 |
> | 133 | 7   | 3  | 200 |
> | 134 | 7   | 4  | 202 |
> | 135 | 7   | 5  | 203 |
> | 136 | 7   | 6  | 204 |
> | 137 | 7   | 7  | 205 |
> | 138 | 7   | 8  | 206 |
> | 139 | 7   | 9  | 207 |
> | 152 | 8   | 0  | 23  |
> | 170 | 8   | 1  | 7   |
> | 171 | 8   | 2  | 12  |
> | 172 | 8   | 3  | 13  |
> | 173 | 8   | 4  | 212 |
> | 174 | 8   | 5  | 183 |
> | 175 | 8   | 6  

Re: which ubuntu server is recommended?

[jox joe]

CORRECTION: Sorry, i am using Ubuntu  18.04.4 LTS now, it is stable.
I want to reinstall everything and I wanted to use a newer OS version.


Alvaro  ezt írta (időpont: 2022. febr. 3., Cs, 11:20):

> ...you can use Ubuntu 18.04.6 LTS, for exemple :)
>
>
>
> --
>
>
>
> On Thu, 3 Feb 2022 10:58:03 +
> jox joe  wrote:
>
> > Hello Maxim, Alvaro,
> > 
> > Standard support
> > LTS Releases
> >
> > Ubuntu 20.04.3 LTS (Focal Fossa) ›
> > (ubuntu-21.04-live-server-arm64.iso)
> > Ubuntu 18.04.6 LTS (Bionic Beaver) ›
> >
> > Interim Releases
> >
> > Ubuntu 21.10 (Impish Indri) ›
> > Ubuntu 21.04 (Hirsute Hippo) ›
> > 
> > I'm using this now:
> > ubuntu-21.04-live-server-arm64.iso
> >
> > I want to use this server:
> > Ubuntu 20.04.3 LTS (Focal Fossa) ›
> > (ubuntu-21.04-live-server-arm64.iso)
> >
> > (and install the latest OM version)
> >
> > Do you agree with this?
> >
> > In case of 21.04 there is no "standard" version
> > only live is available. Did you use this one?
> >
> > I want to use the same operating system
> > what you used while preparing the pdf tutorials.
> > Thanks
>
>
> --
> Alvaro
>

Re: openmeetings 6.2.0 | delayed chat messages and microphone on\off

[jox joe]

I have the same experience when I click on the folder names in the left
window of OM.
Sometimes I need to click two or three times to open a folder or modify the
folder name.
I use only two http clients: Firefox or Chrome.

Viktor Kotliar  ezt írta (időpont: 2022. jan. 31.,
H, 12:41):

> Hi all,
>
> could somebody point where to look decision for the problem or what to
> check about delayed chat messages and microphone switching on\off where
> a meeting with 10 or more people in place. All these people from
> different places (not from the one subnet). People some time click
> several times on the mic icon to switch their microphone on during the
> meeting.
>
> Our setup:
>server: xen virtual machine with Debian 10.11
>network: real IPv4
>software:
>  - openmeetings 6.2.0 ( SIP audio enabled but not used)
>  - kms 6.16.0-0kurento1.18.0
>  - coturn 4.5.1.1-1.1+deb10u2
>  - Asterisk 16.13.0
>
> Many thx in advance!
>
> Best regards,
> Victor
>

which ubuntu server is recommended?

[jox joe]

Hello Maxim, Alvaro,

Standard support
LTS Releases

Ubuntu 20.04.3 LTS (Focal Fossa) ›
(ubuntu-21.04-live-server-arm64.iso)
Ubuntu 18.04.6 LTS (Bionic Beaver) ›

Interim Releases

Ubuntu 21.10 (Impish Indri) ›
Ubuntu 21.04 (Hirsute Hippo) ›

I'm using this now:
ubuntu-21.04-live-server-arm64.iso

I want to use this server:
Ubuntu 20.04.3 LTS (Focal Fossa) ›
(ubuntu-21.04-live-server-arm64.iso)

(and install the latest OM version)

Do you agree with this?

In case of 21.04 there is no "standard" version
only live is available. Did you use this one?

I want to use the same operating system
what you used while preparing the pdf tutorials.
Thanks

Re: OM6 testing _ assigning a set of whiteboards to one room

[jox joe]

 >did you add all WBs via "Files" section?
ANSWER: yes
>have you specified different WB index?
ANSWER: yes, I assigned unique indices

ADDITIONAL TESTING:
STEP 1:
I added 13 whiteboards in the "Files"section as stated above
Indices:
0,1,2,3,4,5,6,7,8,9,10,11,12

STEP 2:
Stop/start OM-Tomcat

STEP 3:
Starting the client.
Missing indeces:
4, 8, 10

STEP 4:
Stop/start OM-Tomcat

STEP 5:
Starting the client.
Missing indeces:
6,4

STEP 6:
Stop/start OM-Tomcat

STEP 7:
Starting the client.
Missing indeces:
5,8,9

STEP 8:
Stop/start OM-Tomcat

STEP 9:
Starting the client.
Missing indeces:
12

NOTE:
Missing index always means that
the whiteboard is visible but it's empty.

EVALUATION:
The probability is rather high
that this is not a database inconsistency
problem.

ACTION PLAN:
I'm going to install a clean and latest
OM on a local Ubuntu server in one or two weeks.

If you can tell me which is the relevant Java module
maybe I can test it earlier than that.

This was the room table for my test:
+-+-++-+
| id  | room_id | wb_idx | file_id |
+-+-++-+
| 1   | 2   | 2  | 125 |
| 2   | 9   | 1  | 126 |
| 89  | 11  | 0  | 151 |
| 90  | 11  | 1  | 152 |
| 91  | 11  | 2  | 153 |
| 92  | 11  | 3  | 154 |
| 93  | 11  | 4  | 155 |
| 94  | 11  | 5  | 156 |
| 98  | 11  | 9  | 162 |
| 99  | 11  | 10 | 163 |
| 100 | 11  | 11 | 165 |
| 101 | 11  | 12 | 166 |
| 102 | 11  | 13 | 167 |
| 103 | 11  | 8  | 161 |
| 104 | 11  | 14 | 168 |
| 105 | 11  | 15 | 169 |
| 106 | 11  | 16 | 170 |
| 107 | 11  | 17 | 171 |
| 108 | 11  | 18 | 172 |
| 109 | 11  | 19 | 173 |
| 130 | 7   | 0  | 198 |
| 131 | 7   | 1  | 199 |
| 132 | 7   | 2  | 201 |
| 133 | 7   | 3  | 200 |
| 134 | 7   | 4  | 202 |
| 135 | 7   | 5  | 203 |
| 136 | 7   | 6  | 204 |
| 137 | 7   | 7  | 205 |
| 138 | 7   | 8  | 206 |
| 139 | 7   | 9  | 207 |
| 152 | 8   | 0  | 23  |
| 170 | 8   | 1  | 7   |
| 171 | 8   | 2  | 12  |
| 172 | 8   | 3  | 13  |
| 173 | 8   | 4  | 212 |
| 174 | 8   | 5  | 183 |
| 175 | 8   | 6  | 184 |
| 176 | 8   | 7  | 209 |
| 183 | 8   | 8  | 186 |
| 184 | 8   | 9  | 187 |
| 185 | 8   | 10 | 188 |
| 186 | 8   | 11 | 189 |
| 187 | 8   | 12 | 55  |
+-+-++-+

The table above contains the initial state
after restarting OM-Tomcat.

Where do we store the information about
the set of whiteboards that are actually
on the wall in a given classroom.
I mean the the list of active whiteboards
in a given room.






































jox joe  ezt írta (időpont: 2022. jan. 10., H, 23:13):

> I'll come back to this issue later.
>
> Maxim Solodovnik  ezt írta (időpont: 2022. jan. 9.,
> V, 15:42):
>
>> hello
>>
>> could you please provide more details on "STEP 4: assign all 20
>> whiteboards to ONE room (administration/conference rooms)"
>> did you add all WBs via "Files" section?
>> have you specified different WB index?
>>
>> maybe you can:
>> - reproduce the issue using "clean" OM
>> - create JIRA
>> - attach your DB backup to JIRA so i can check :)
>>
>> On Sun, 9 Jan 2022 at 20:12, jox joe  wrote:
>> >
>> > Environment:
>> > OM 6 (not the latest version)
>> > mariadb  Ver 15.1 Distrib 10.6.5-MariaDB, for debian-linux-gnu (x86_64)
>> using readline 5.2
>> >
>> > Steps of testing:
>> > STEP 1: creating 20 new whiteboards (this can be ONE lesson in a course)
>> > STEP 2: saving all whiteboards (SAVE button)
>> > STEP 3: exit the room
>> > STEP 4: assign all 20 whiteboards to ONE room
>> (administration/conference rooms)
>> > STEP 5: exit OM
>> > STEP 6: restart OM-Tomcat
>> > STEP 7: enter OM and check the given room which should contain the 20
>> WBs
>> >
>> > My result:
>> > - some whiteboard contents were missing completely(only the empty WB)
>> > - some whiteboards were not complete (part of the content was missing)
>> > - I could put back the missing whiteboard manually, but not always
>> > - sometimes (error message): "something bad happened, check log,
>> contact the developers"
>> >
>> > Evaluation:
>> > - the Java module handling this part of the database is suspicious
>

Re: OM6 testing _ assigning a set of whiteboards to one room

[jox joe]

I'll come back to this issue later.

Maxim Solodovnik  ezt írta (időpont: 2022. jan. 9.,
V, 15:42):

> hello
>
> could you please provide more details on "STEP 4: assign all 20
> whiteboards to ONE room (administration/conference rooms)"
> did you add all WBs via "Files" section?
> have you specified different WB index?
>
> maybe you can:
> - reproduce the issue using "clean" OM
> - create JIRA
> - attach your DB backup to JIRA so i can check :)
>
> On Sun, 9 Jan 2022 at 20:12, jox joe  wrote:
> >
> > Environment:
> > OM 6 (not the latest version)
> > mariadb  Ver 15.1 Distrib 10.6.5-MariaDB, for debian-linux-gnu (x86_64)
> using readline 5.2
> >
> > Steps of testing:
> > STEP 1: creating 20 new whiteboards (this can be ONE lesson in a course)
> > STEP 2: saving all whiteboards (SAVE button)
> > STEP 3: exit the room
> > STEP 4: assign all 20 whiteboards to ONE room (administration/conference
> rooms)
> > STEP 5: exit OM
> > STEP 6: restart OM-Tomcat
> > STEP 7: enter OM and check the given room which should contain the 20 WBs
> >
> > My result:
> > - some whiteboard contents were missing completely(only the empty WB)
> > - some whiteboards were not complete (part of the content was missing)
> > - I could put back the missing whiteboard manually, but not always
> > - sometimes (error message): "something bad happened, check log, contact
> the developers"
> >
> > Evaluation:
> > - the Java module handling this part of the database is suspicious
> > (to protect the database consistency "10.6.5-MariaDB" would be able to
> give more support /transaction/)
> >
> > Notes:
> > - I tested the same OM 6 on two different Ubuntu 18.4 servers
> > - RAM in the first server: 6 Gbyte
> > - RAM in the second server: 8 Gbyte
> > - the result was the same on both servers
> >
> > Possible next step:
> > - someone in this community could do the same test
> > (optimally with the latest "official" OM version)
> >
> > QUESTIONS:
> > What do you think about this test case?
> > What is your opinion about creating/managing (lesson) content in OM?
> > (digital OM-Whiteboard means you can create your material in advance
> > which can include videos, too)
> >
> > (Reference number of this message: 2022-01-09-13-08-47)
> >
> >
> >
>
>
> --
> Best regards,
> Maxim
>

Re: [HELP needed] Apache reverse proxy -> Openmeetings 6 (Tomcat)

[jox joe]

Thanks Maxim.
It's working now.
CONFIGURATION: one domain with one SSL Certificate. OM-Tomcat (/) + 2 other
subsites (/001 /002) behind Apache Webserver.
OM-Tomcat is served through Apache WebServer reverse proxy and the two
subsites directly by the Apache webserver.
The SSL Certificate is installed under the Apache Webserver, SSL is
switched off in OM-Tomcat.


Maxim Solodovnik  ezt írta (időpont: 2022. jan. 9.,
V, 15:55):

> On Sun, 9 Jan 2022 at 00:43, jox joe  wrote:
> >
> > Thank you. I've read this article several times.
> > >Now according to CSRF:
> > >You need to modify conf/jee-container.xml and add following property
> > >
> > >To  block right before  name="connectionProperties">
> > >This should fix your issue
> >
> > jee-container.xml   <--  This file is not available in OM6.
> >
>
> this is true :)
> I do remember I have answered this question before :)
> (you can check mail-archives :))
>
> this part in OM6 is:
> conf/server.xml
>
> connectionTimeout="2"
>
> NOTE 2 additional attributes: *scheme="https" secure="true"*
>
> >
> >
>
>
> --
> Best regards,
> Maxim
>

OM6 testing _ assigning a set of whiteboards to one room

[jox joe]

Environment:
OM 6 (not the latest version)
mariadb  Ver 15.1 Distrib 10.6.5-MariaDB, for debian-linux-gnu (x86_64)
using readline 5.2

Steps of testing:
STEP 1: creating 20 new whiteboards (this can be ONE lesson in a course)
STEP 2: saving all whiteboards (SAVE button)
STEP 3: exit the room
STEP 4: assign all 20 whiteboards to ONE room (administration/conference
rooms)
STEP 5: exit OM
STEP 6: restart OM-Tomcat
STEP 7: enter OM and check the given room which should contain the 20 WBs

My result:
- some whiteboard contents were missing completely(only the empty WB)
- some whiteboards were not complete (part of the content was missing)
- I could put back the missing whiteboard manually, but not always
- sometimes (error message): "something bad happened, check log, contact
the developers"

Evaluation:
- the Java module handling this part of the database is suspicious
(to protect the database consistency "10.6.5-MariaDB" would be able to give
more support /transaction/)

Notes:
- I tested the same OM 6 on two different Ubuntu 18.4 servers
- RAM in the first server: 6 Gbyte
- RAM in the second server: 8 Gbyte
- the result was the same on both servers

Possible next step:
- someone in this community could do the same test
(optimally with the latest "official" OM version)

QUESTIONS:
What do you think about this test case?
What is your opinion about creating/managing (lesson) content in OM?
(digital OM-Whiteboard means you can create your material in advance
which can include videos, too)

(Reference number of this message: 2022-01-09-13-08-47)

Re: [HELP needed] Apache reverse proxy -> Openmeetings 6 (Tomcat)

[jox joe]

Thank you. I've read this article several times.
>Now according to CSRF:
>You need to modify conf/jee-container.xml and add following property
>
>To  block right before 
>This should fix your issue

jee-container.xml   <--  This file is not available in OM6.

Re: MariaDB not accessable OM 6.0.0

[jox joe]

Thanks for your replies.
SOLUTION:
I used the wrong database connector.
It worked with this one:
mysql-connector-java-8.0.26.jar

Tom Meierjürgen  ezt írta (időpont: 2021. nov. 25., Cs,
8:43):

> Obviously you´re running a Galera Cluster which did not finish its
> synchronsation/replication due to a node beeing down / having been down.
>
> First fix your db-cluster ,then check if the user you configured in OM
> exists in the db and has the proper rights.
>
> Before fixing the db-cluster, the db would not be accessible for the
> om-nodes.
>
> Mostly happens when the galera cluster was not able to build up a proper
> qorum (2 nodes only? it needs at least three to build a working quorum,
> but galera runs even with two nodes,but not as fault-tolerant as with a
> quorum) as then it stops completely in case of an error due to switching
> off one galera-node or one node crashing due to powerfailure or
> something like that.
>
>
> Greetz from Cologne/Germany,
>
>   Tom
>
> Am 24.11.2021 um 20:59 schrieb jox joe:
> > 001: MariaDB is up and running.
> >
> > ● mariadb.service - MariaDB 10.6.5 database server
> >Loaded: loaded (/lib/systemd/system/mariadb.service; enabled;
> > vendor preset: enabled)
> >   Drop-In: /etc/systemd/system/mariadb.service.d
> >└─migrated-from-my.cnf-settings.conf
> >Active: active (running) since Wed 2021-11-24 19:17:02 GMT; 21min ago
> >  Docs: man:mariadbd(8)
> > https://mariadb.com/kb/en/library/systemd/
> >   Process: 6438 ExecStartPost=/etc/mysql/debian-start (code=exited,
> > status=0/SUCCESS)
> >   Process: 6436 ExecStartPost=/bin/sh -c systemctl unset-environment
> > _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
> >   Process: 6366 ExecStartPre=/bin/sh -c [ ! -e
> > /usr/bin/galera_recovery ] && VAR= ||   VAR=`cd /usr/bin/..;
> > /usr/bin/galera_recovery`; [ $? -eq 0 ] && systemctl set-environment
> > _WSREP_START_POSITION=$VA
> >   Process: 6357 ExecStartPre=/bin/sh -c systemctl unset-environment
> > _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
> >   Process: 6348 ExecStartPre=/usr/bin/install -m 755 -o mysql -g root
> > -d /var/run/mysqld (code=exited, status=0/SUCCESS)
> >  Main PID: 6422 (mariadbd)
> >Status: "Taking your SQL requests now..."
> > Tasks: 9 (limit: 4915)
> >CGroup: /system.slice/mariadb.service
> >└─6422 /usr/sbin/mariadbd
> >
> > 002: Then I receive the following message (if Tomcat is running):
> >
> > mariadbd[6422]: 2021-11-24 19:38:00 243 [Warning] Access denied for
> > user 'om_db_admin'@'localhost' (using password: YES)
> >
> > In openmeetings.log error: mariadb/sql is down
> >
> > 003: OM 6.0.0 runs on local server Ununtu 18
> >
> > 004:
> > I can't access OM, the message:
> > https://192.168.1.30:5443/openmeetings/notinited
> >
> > I've never seen 'om_db_admin' before.
> >
> > Thank you for your help.
> >
> >
> >
> >
> >
>

[HELP needed] Apache reverse proxy -> Openmeetings 6 (Tomcat)

[jox joe]

OM 6
Apache Tomcat/9.0.43
Ubuntu 18.4 server
Apache Web Server 2.4.29
traditional install based on Alvaro's PDFs
I used JKS for SSL.

I did this after a long internet research:
***
server.xml:









*
default-ssl.config
Apache web server Apache/2.4.29 (Ubuntu)

## Custom fragment
RewriteEngine On
RewriteCond %{HTTP:Connection} Upgrade [NC]
RewriteCond %{HTTP:Upgrade} websocket [NC]
RewriteRule /(.*) ws://localhost:5443/$1 [P,L]
RedirectMatch ^/$ http://localhost/openmeetings
ProxyPreserveHost On


  Require all granted
  ProxyPass http://localhost:5443/openmeetings
  ProxyPassReverse http://localhost:5443/openmeetings
  RewriteEngine On
  RewriteRule ^/(.*) http://localhost:5443/$1 [P]

**
RESULT:

Openmeetings.log

DEBUG 01-08 14:06:53.813 o.a.o.w.a.WebSession:223 [nio-5443-exec-4]
 - checkHashes, secure: 'null', invitation: 'null'
DEBUG 01-08 14:06:53.813 o.a.o.w.a.WebSession:225 [nio-5443-exec-4]
 - checkHashes, has soap in session ? 'false'
INFO 01-08 14:06:54.707 o.a.w.p.h.CsrfPreventionRequestCycleListener
 :591 [nio-5443-exec-5] - Possible CSRF attack, request URL:

I can see the login pop-up window but I can't login.
Network test is not working.

NOTE:
SSL certificate installed only on Apache webserver.
Between Apache webserver and OM-Tomcat no SSL is needed.

QUESTION 1:
What should I do to make it work?

QUESTION 2:
How can I change the Tomcat port
from 5443 to 443. I tried but no succes;
it worked with OM 5.

Thank you for your help.

MariaDB not accessable OM 6.0.0

[jox joe]

001: MariaDB is up and running.

● mariadb.service - MariaDB 10.6.5 database server
   Loaded: loaded (/lib/systemd/system/mariadb.service; enabled; vendor
preset: enabled)
  Drop-In: /etc/systemd/system/mariadb.service.d
   └─migrated-from-my.cnf-settings.conf
   Active: active (running) since Wed 2021-11-24 19:17:02 GMT; 21min ago
 Docs: man:mariadbd(8)
   https://mariadb.com/kb/en/library/systemd/
  Process: 6438 ExecStartPost=/etc/mysql/debian-start (code=exited,
status=0/SUCCESS)
  Process: 6436 ExecStartPost=/bin/sh -c systemctl unset-environment
_WSREP_START_POSITION (code=exited, status=0/SUCCESS)
  Process: 6366 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ]
&& VAR= ||   VAR=`cd /usr/bin/..; /usr/bin/galera_recovery`; [ $? -eq 0 ]
&& systemctl set-environment _WSREP_START_POSITION=$VA
  Process: 6357 ExecStartPre=/bin/sh -c systemctl unset-environment
_WSREP_START_POSITION (code=exited, status=0/SUCCESS)
  Process: 6348 ExecStartPre=/usr/bin/install -m 755 -o mysql -g root -d
/var/run/mysqld (code=exited, status=0/SUCCESS)
 Main PID: 6422 (mariadbd)
   Status: "Taking your SQL requests now..."
Tasks: 9 (limit: 4915)
   CGroup: /system.slice/mariadb.service
   └─6422 /usr/sbin/mariadbd

002: Then I receive the following message (if Tomcat is running):

mariadbd[6422]: 2021-11-24 19:38:00 243 [Warning] Access denied for user
'om_db_admin'@'localhost' (using password: YES)

In openmeetings.log error: mariadb/sql is down

003: OM 6.0.0 runs on local server Ununtu 18

004:
I can't access OM, the message:
https://192.168.1.30:5443/openmeetings/notinited

I've never seen 'om_db_admin' before.

Thank you for your help.

Using OM with a drawing pad

[jox joe]

Is Openmettings working properly with a drawing pad/tablet?
Brands: Watcom, XP-PEN etc.
Has anyone tried this already?
Thank you.

testing backup/restore

[jox joe]

Hello,

i tested the command-line backup and restore.

step 1:
backup the existing OM 6.0.0 with the command-line utility
(zip file is created)

step 2:
I created a new OM with modified source

step 3:
I unzipped the new OM

step 4:
I installed the zip-file (from step 1) on top of the new OM with the
command-line
utility

Problem:
After starting OM I still can see the original version that
was installed before step 1.

NOTE:
Error message when the backup is running (step 1):
17:33:21.250 [pool-1-thread-1] DEBUG
io.netty.util.internal.PlatformDependent0 -
jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable
java.lang.IllegalAccessException: class
io.netty.util.internal.PlatformDependent0$6 cannot access class
jdk.internal.misc.Unsafe (in module java.base) because module java.base
does not export jdk.internal.misc to unnamed module @7c281eb8

CONCULSION:
The combined installation (original system + the new one) is not working,
at least not for me.

Thank you.

Re: How can I generate roomItems Hash?

[jox joe]

Thank you. This means I do not need to generate it because
it happens automatically.

Maxim Solodovnik  ezt írta (időpont: 2021. máj. 14.,
P, 8:08):

> This is UUID v4
> you shouldn't generate it :)
>
> On Fri, 14 May 2021 at 14:01, jox joe  wrote:
>
>>
>> How can I generate roomItems Hash
>> with or without Java?
>>
>> Example from a WML file:
>> "roomItems": {
>> "34546ade-8414-4eb4-87f4-7f4cbd03d621":
>>
>> I think it is MD5.
>>
>> What should be the input string?
>>
>> Thank you.
>>
>
>
> --
> Best regards,
> Maxim
>

How can I generate roomItems Hash?

[jox joe]

How can I generate roomItems Hash
with or without Java?

Example from a WML file:
"roomItems": {
"34546ade-8414-4eb4-87f4-7f4cbd03d621":

I think it is MD5.

What should be the input string?

Thank you.

Re: Changing the size of the whiteboard OM 5.1.0

[jox joe]

Hello Maxim,
thank you for your reply. I haven't yet setup the suitable
hw/sw environment for testing.
For the time being I have only OM 4 and OM 5.
I also need to find out how to transfer material
from an old version to a newer one.
Obviously with backup and restore but this has never
worked properly for me.


Maxim Solodovnik  ezt írta (időpont: 2021. máj. 14.,
P, 0:37):

> Is it reproducible with most recent snapshot?
>
> from mobile (sorry for typos ;)
>
>
> On Fri, May 14, 2021, 02:58 jox joe  wrote:
>
>> If I change the size of the whiteboard through the user interface
>> the new size is not retained.
>>
>> If I set the new size in the WML file manually it works roperly.
>>
>> Please double-check it.
>>
>

Changing the size of the whiteboard OM 5.1.0

[jox joe]

If I change the size of the whiteboard through the user interface
the new size is not retained.

If I set the new size in the WML file manually it works roperly.

Please double-check it.

Re: Problem Changing Ports

[jox joe]

TO: Jibsan Joel Rosa Toirac
>Connector port="80"
>redirectPort="443"

I use the same ports.
Version: OM 5.1.0
OS: Ubuntu Server 18.04 lts
No docker.
SSL Certificate installed manually.
It works properly here.



Maxim Solodovnik  ezt írta (időpont: 2021. máj. 7.,
P, 0:37):

>
>
> On Fri, 7 May 2021 at 03:05, Jibsan Joel Rosa Toirac 
> wrote:
>
>> Hello and thanks for your reply. There must not be any other service
>> using the ports because I’m running the OM over a brand new MV. Also for
>> SSL I always did, with older versions, the port changing from 5443 to 443
>> and 8080 to 80 and all worked. Of course that trigger a warning about the
>> certificate but that doesn’t matter. The thing is I’m not able to change
>> the ports here and I don’t know why.
>>
>
> The logs are designed to help in such situations   :)))
>
>
>> Greetings.
>>
>> Jibsan
>>
>> On Thu, May 6, 2021 at 12:03 AM Maxim Solodovnik 
>> wrote:
>>
>>> Another possible cause for error is some other service already using
>>> ports 80 or 443
>>>
>>> from mobile (sorry for typos ;)
>>>
>>>
>>> On Thu, May 6, 2021, 04:43 seba.wag...@gmail.com 
>>> wrote:
>>>
 Seems okay to me.

 What's the error?

 Did you consider that running on port below 1024 requires root
 privileges ?

 Also enabling port 443 without a valid SSL certificate will trigger a
 security warning. A valid certificate for HTTPS is mandatory to use webRTC.
 Except for using localhost/127.0.0.1 connections.

 Thanks
 Seb

 Sebastian Wagner
 Director Arrakeen Solutions, OM-Hosting.com
 http://arrakeen-solutions.co.nz/
 https://om-hosting.com - Cloud & Server Hosting for HTML5
 Video-Conferencing OpenMeetings

 
 


 On Thu, 6 May 2021 at 04:38, Jibsan Joel Rosa Toirac <
 jibsa...@gmail.com> wrote:

> Hello I'm trying to change default OM ports but every time I change it
> the server crash and never rise the OM web Interface. Here is the code of
> the ports I'm attempting to change:
>
>
> connectionTimeout="2"
>redirectPort="443" />
>
>
>  protocol="org.apache.coyote.http11.Http11NioProtocol"
>maxThreads="150" SSLEnabled="true">
> 
>   certificateKeystorePassword="openmeetings"
>  certificateKeystoreType="JKS"
>  certificateVerification="false"
>  sslProtocol="TLS"
>  type="RSA" />
> 
> 
>
> Could you help me?
>
> Thanks.
>
> Jibsan
>

>
> --
> Best regards,
> Maxim
>

Re: Transferring one whiteboard from one server to another

[jox joe]

Thanks, Maxim. It's not a simple procedure.

Maxim Solodovnik  ezt írta (időpont: 2021. márc. 8.,
H, 12:59):

> WML will not contain file (images, documents/video/recordings)
>
> WML for 4.x and 5.x are not compatible
>
> I'm afraid you can't "transfer" these files without DB "patching"
> (record for new WML should be manually inserted into DB)
>
> On Mon, 8 Mar 2021 at 14:16, jox joe  wrote:
>
>> Hello Sebatian,
>>
>> what you mentioned is a special case of clustered OM servers.
>> But what I think of is transferring whiteboard content
>> between any two servers. I know that .WML files are used
>> internally which do not contain the complete whiteboard
>> content.
>>
>> Some examples for what I want to do:
>> whiteboard OM version 4.x -> whiteboard OM version 5.x
>> whiteboard OM version 5.x -> whiteboard OM version 6.x
>>
>> Do you suggest to use only clustered OMs in the future?
>>
>> The .WML file describes where the whiteboard objects are stored.
>> The WB manager uses the .WML file to find and display
>> the WB content. The content itself is somewhere in the
>> SQL database and the file system of OM. Is this correct?
>>
>> Thank you for your reply.
>> jox
>>
>>
>> seba.wag...@gmail.com  ezt írta (időpont: 2021.
>> márc. 8., H, 0:50):
>>
>>> I think you can just save it in the room in OpenMeetings, it will store
>>> it as .WML file internally. And then open the same file on another
>>> OpenMeetings instance. Assuming both OpenMeetings servers are linked to the
>>> same database and file system. Basically whats described in
>>> https://openmeetings.apache.org/Clustering.html#database1
>>>
>>> Thanks,
>>> Sebastian
>>>
>>> Sebastian Wagner
>>> Director Arrakeen Solutions, OM-Hosting.com
>>> http://arrakeen-solutions.co.nz/
>>> https://om-hosting.com - Cloud & Server Hosting for HTML5
>>> Video-Conferencing OpenMeetings
>>>
>>> <https://www.youracclaim.com/badges/da4e8828-743d-4968-af6f-49033f10d60a/public_url>
>>> <https://www.youracclaim.com/badges/b7e709c6-aa87-4b02-9faf-099038475e36/public_url>
>>>
>>>
>>> On Sun, 7 Mar 2021 at 19:07, jox joe  wrote:
>>>
>>>> Good morning everybody,
>>>>
>>>> i'd like to transfer one whiteboard content from one
>>>> server to another without using
>>>> - backup/restore
>>>> - pdf
>>>> - png
>>>>
>>>> The target whiteboard should be editable in the same
>>>> way as the source whiteboard.
>>>>
>>>> This would support content creation only
>>>> with OM.
>>>> I know that this transfer can't be done with one
>>>> downloadable single file.
>>>> I also know that this is rather complicated but it can be done.
>>>> The question is how?
>>>>
>>>> Thank you for your feedback.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>
> --
> Best regards,
> Maxim
>

Re: Transferring one whiteboard from one server to another

[jox joe]

Hello Sebatian,

what you mentioned is a special case of clustered OM servers.
But what I think of is transferring whiteboard content
between any two servers. I know that .WML files are used
internally which do not contain the complete whiteboard
content.

Some examples for what I want to do:
whiteboard OM version 4.x -> whiteboard OM version 5.x
whiteboard OM version 5.x -> whiteboard OM version 6.x

Do you suggest to use only clustered OMs in the future?

The .WML file describes where the whiteboard objects are stored.
The WB manager uses the .WML file to find and display
the WB content. The content itself is somewhere in the
SQL database and the file system of OM. Is this correct?

Thank you for your reply.
jox


seba.wag...@gmail.com  ezt írta (időpont: 2021.
márc. 8., H, 0:50):

> I think you can just save it in the room in OpenMeetings, it will store
> it as .WML file internally. And then open the same file on another
> OpenMeetings instance. Assuming both OpenMeetings servers are linked to the
> same database and file system. Basically whats described in
> https://openmeetings.apache.org/Clustering.html#database1
>
> Thanks,
> Sebastian
>
> Sebastian Wagner
> Director Arrakeen Solutions, OM-Hosting.com
> http://arrakeen-solutions.co.nz/
> https://om-hosting.com - Cloud & Server Hosting for HTML5
> Video-Conferencing OpenMeetings
>
> <https://www.youracclaim.com/badges/da4e8828-743d-4968-af6f-49033f10d60a/public_url>
> <https://www.youracclaim.com/badges/b7e709c6-aa87-4b02-9faf-099038475e36/public_url>
>
>
> On Sun, 7 Mar 2021 at 19:07, jox joe  wrote:
>
>> Good morning everybody,
>>
>> i'd like to transfer one whiteboard content from one
>> server to another without using
>> - backup/restore
>> - pdf
>> - png
>>
>> The target whiteboard should be editable in the same
>> way as the source whiteboard.
>>
>> This would support content creation only
>> with OM.
>> I know that this transfer can't be done with one
>> downloadable single file.
>> I also know that this is rather complicated but it can be done.
>> The question is how?
>>
>> Thank you for your feedback.
>>
>>
>>
>>
>>
>>
>>
>>
>>

Transferring one whiteboard from one server to another

[jox joe]

Good morning everybody,

i'd like to transfer one whiteboard content from one
server to another without using
- backup/restore
- pdf
- png

The target whiteboard should be editable in the same
way as the source whiteboard.

This would support content creation only
with OM.
I know that this transfer can't be done with one
downloadable single file.
I also know that this is rather complicated but it can be done.
The question is how?

Thank you for your feedback.

saving whiteboard content and puttting it back onto it _ error

[jox joe]

Hello everybody,

Case 1.
STEP 1: I draw a line on the whiteboard.
STEP 2: I save it inside OM.
STEP 3: I put back the saved file onto a new whiteboard.
Result: The content is the same.

Case 2.
STEP 1: I draw a line on the whiteboard.
STEP 2: I draw a car with the "car" tool.
STEP 3: I save the whiteboard.
STEP 4: I put the saved file onto the whiteboard.
STEP 5: I select the line and the car TOGETHER and move them.
STEP 6: I save the whiteboard.
STEP 7: I put back the saved file onto the whiteboard.
Result: the positions of the objects are not correct.
Positions are not maintained because I moved the two objects
together. If I move them one by one it's ok.
I used om 5.1.0 without recompiling.
It seems to be more stable than OM 4.xx.

Any feedback?
Thank you.
Note: I like the main concept of OM. The digital whiteboard is its cutting
edge.

Re: Updated tutorial OpenMeetings 5.1.0 on Centos 8

[jox joe]

Hello Maxim,

>This is why I'm trying to describe the rules :)
Thank you very much.
I need your support because I've never used
mailing lists in my life.
Now I understand the following:
If someone opens a new topic (= a new thread)
I am supposed to talk ONLY about that topic
in this thread.
If I have a different question/thought than the available threads
I'm supposed to start a new thread specifying precisely
what I'd like to discuss: this is the title of the thread.
In this way other participants can find easier what
they are looking for.

See you later. Have a good day.

Jox







Maxim Solodovnik  ezt írta (időpont: 2021. jan. 25.,
H, 1:59):

>
>
> On Mon, 25 Jan 2021 at 00:19, jox joe  wrote:
>
>> Hello Maxim,
>>
>> >this one was answered in another thread :)
>> I did not ask anything here. I just said something
>> to Alvaro.
>>
>> >this one was answered in another thread :)
>> Sorry, which thread do you mean?
>>
>
> I have feeling the beginning of the this email was the same as the email
> with "test results" subject
>
>>
>> >please do not hijack mail threads
>> >If you have new unanswered question please create new mail thread with
>> clear title
>> >(so other users can understand what this mail thread about)
>> >
>> >do not send same question to multiple unrelated mail threads
>>
>> Please do not forget that I am new in this mailing list.
>> Maybe I do not know all rules in detail.
>> I do not want to hijack mail threads intentionally.
>> But I can make a mistake especially because I
>> am a beginner here.
>> Thank you for your great support.
>>
>
> This is why I'm trying to describe the rules :)
>
>
>>
>> >Backup/restore should take care of this
>> >(just remember: there can't be too much backups :)))
>> Thank you for your answer.
>> I'm going to test the backup system. I haven't yet tested
>> it thoroughly.
>>
>> Jox
>>
>>
>>
>>
>> Maxim Solodovnik  ezt írta (időpont: 2021. jan.
>> 24., V, 14:38):
>>
>>> Hello Jox,
>>>
>>> please do not hijack mail threads
>>> If you have new unanswered question please create new mail thread with
>>> clear title
>>> (so other users can understand what this mail thread about)
>>>
>>> do not send same question to multiple unrelated mail threads
>>>
>>> On Sun, 24 Jan 2021 at 17:56, jox joe  wrote:
>>>
>>>> Hello Alvaro,
>>>> thank you for your tutorials.
>>>> I used them to install OM
>>>> about one year ago.
>>>>
>>>> Configuration:
>>>> 1. OM 5.0.0-M4
>>>> 2. Ubuntu 18.04
>>>> 3. Mariadb
>>>> 4. Kurento
>>>> 5. Tomcat
>>>> 6. Coturn
>>>> 7. OpenJava
>>>> 8. Clients: Firefox, Chrome
>>>>
>>>> OM was not too stable.
>>>> "Connection to MediaServer has been lost"
>>>> was the typical error message.
>>>>
>>>> A couple of days ago we tested the OM server with two
>>>> clients (Firefox, Chrome).
>>>> But this time both client machines were connected
>>>> to the router with Ethernet cable which means
>>>> the WiFi was removed from the communication
>>>> channel.
>>>> Overall time of testing with Ethernet cable: 2 hours.
>>>> Result: no disruption, it works like a charm.
>>>>
>>>>
>>> this one was answered in another thread :)
>>>
>>>
>>>> I want to upgrade OM
>>>> but I am not sure whether I will be
>>>> able to move some whiteboard material
>>>> (without converting to PNG or PDF) to the new OM.
>>>>
>>>
>>> Backup/restore should take care of this
>>> (just remember: there can't be too much backups :)))
>>>
>>>
>>>>
>>>> Jox
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Alvaro  ezt írta (időpont: 2021. jan. 24., V,
>>>> 9:25):
>>>>
>>>>>
>>>>> Hello,
>>>>>
>>>>> Is updated the tutorial:
>>>>>
>>>>> Installation OpenMeetings 5.1.0 on Centos 8
>>>>>
>>>>> ...the old LibreOffice version is not in the server to download,
>>>>> now is updated to 7.0.4.
>>>>>
>>>>> If you use this tutorial and find error installation please download it
>>>>> again.
>>>>>
>>>>> As allways can find it at:
>>>>>
>>>>>
>>>>> https://cwiki.apache.org/confluence/display/OPENMEETINGS/Tutorials+for+installing+OpenMeetings+and+Tools
>>>>>
>>>>> Thanks
>>>>>
>>>>> Alvaro
>>>>>
>>>>> ...
>>>>>
>>>>> 
>>>>>
>>>>
>>>
>>> --
>>> Best regards,
>>> Maxim
>>>
>>
>
> --
> Best regards,
> Maxim
>

Re: result of testing

[jox joe]

>I'm on WiFi only for the last ~1year of self isolation
>no issues :)
>Maybe your WiFi router is not good enough?
Hello Maxim,
I am on cable, I do not use WiFi but other clients very far from me
can. I always suggest to use Ethernet (CAT 6) cable. Thank you.

>All of our 300+ users are in WiFi, no issues were reported.
Thank you, Ali. This information was useful.

>Wifi  is  temperamental.  A closed  door  can cause a drop in signal.
>5 Ghz  will be  better  at  short  distances.
>CAT 6  cable  will not drop packets  etc.
Thank you, Daniel.
I've been using cable since October 2020.
But sometimes people are not able to do that,
they do not know the difference between
WiFi and cable and that different applications
have different requirements. A WiFi
may work with an email server properly
but not with OM.





Daniel Baker  ezt írta (időpont: 2021. jan.
24., V, 14:45):

> Wifi  is  temperamental.  A closed  door  can cause a drop in signal.   5
> Ghz  will be  better  at  short  distances.   CAT 6  cable  will not drop
> packets  etc.
>
>
>
> On 24-Jan-21 2:36 PM, Ali Alhaidary wrote:
>
> All of our 300+ users are in WiFi, no issues were reported.
>
> Ali
>
> Sent from my iPhone
>
> On Jan 24, 2021, at 5:14 PM, Maxim Solodovnik 
>  wrote:
>
> 
> I'm on WiFi only for the last ~1year of self isolation
> no issues :)
> Maybe your WiFi router is not good enough?
>
> On Sat, 23 Jan 2021 at 03:04, jox joe  wrote:
>
>> Ubuntu 18.04
>> OM 5.0.0-M4
>> CoTurn
>>
>> Testing with TWO clients.
>>
>> Configuration 1:
>> client 1: Ethernet cable between the router and the computer
>> client 2: WIFI between the router and the computer
>>
>> Configuration 2:
>> client 1: Ethernet cable between the router and the computer
>> client 2:  Ethernet cable between the router and the computer
>>
>> Duration of test: 60 minutes
>>
>> The result:
>> Configuration 1:
>> low voice quality
>> several disruptions (I had to restart the server.)
>> unstable
>>
>> Configuration 1:
>> very good voice quality
>> no disruption
>> faster screen share
>> very stable
>>
>> Conclusion: using WiFi is not really recommended
>> *
>> What is your experience?
>> Thank you
>>
>>
>>
>
> --
> Best regards,
> Maxim
>
>

Re: Updated tutorial OpenMeetings 5.1.0 on Centos 8

[jox joe]

Hello Maxim,

>this one was answered in another thread :)
I did not ask anything here. I just said something
to Alvaro.

>this one was answered in another thread :)
Sorry, which thread do you mean?

>please do not hijack mail threads
>If you have new unanswered question please create new mail thread with
clear title
>(so other users can understand what this mail thread about)
>
>do not send same question to multiple unrelated mail threads

Please do not forget that I am new in this mailing list.
Maybe I do not know all rules in detail.
I do not want to hijack mail threads intentionally.
But I can make a mistake especially because I
am a beginner here.
Thank you for your great support.

>Backup/restore should take care of this
>(just remember: there can't be too much backups :)))
Thank you for your answer.
I'm going to test the backup system. I haven't yet tested
it thoroughly.

Jox




Maxim Solodovnik  ezt írta (időpont: 2021. jan. 24.,
V, 14:38):

> Hello Jox,
>
> please do not hijack mail threads
> If you have new unanswered question please create new mail thread with
> clear title
> (so other users can understand what this mail thread about)
>
> do not send same question to multiple unrelated mail threads
>
> On Sun, 24 Jan 2021 at 17:56, jox joe  wrote:
>
>> Hello Alvaro,
>> thank you for your tutorials.
>> I used them to install OM
>> about one year ago.
>>
>> Configuration:
>> 1. OM 5.0.0-M4
>> 2. Ubuntu 18.04
>> 3. Mariadb
>> 4. Kurento
>> 5. Tomcat
>> 6. Coturn
>> 7. OpenJava
>> 8. Clients: Firefox, Chrome
>>
>> OM was not too stable.
>> "Connection to MediaServer has been lost"
>> was the typical error message.
>>
>> A couple of days ago we tested the OM server with two
>> clients (Firefox, Chrome).
>> But this time both client machines were connected
>> to the router with Ethernet cable which means
>> the WiFi was removed from the communication
>> channel.
>> Overall time of testing with Ethernet cable: 2 hours.
>> Result: no disruption, it works like a charm.
>>
>>
> this one was answered in another thread :)
>
>
>> I want to upgrade OM
>> but I am not sure whether I will be
>> able to move some whiteboard material
>> (without converting to PNG or PDF) to the new OM.
>>
>
> Backup/restore should take care of this
> (just remember: there can't be too much backups :)))
>
>
>>
>> Jox
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Alvaro  ezt írta (időpont: 2021. jan. 24., V, 9:25):
>>
>>>
>>> Hello,
>>>
>>> Is updated the tutorial:
>>>
>>> Installation OpenMeetings 5.1.0 on Centos 8
>>>
>>> ...the old LibreOffice version is not in the server to download,
>>> now is updated to 7.0.4.
>>>
>>> If you use this tutorial and find error installation please download it
>>> again.
>>>
>>> As allways can find it at:
>>>
>>>
>>> https://cwiki.apache.org/confluence/display/OPENMEETINGS/Tutorials+for+installing+OpenMeetings+and+Tools
>>>
>>> Thanks
>>>
>>> Alvaro
>>>
>>> ...
>>>
>>> 
>>>
>>
>
> --
> Best regards,
> Maxim
>

Re: Updated tutorial OpenMeetings 5.1.0 on Centos 8

[jox joe]

Hello Alvaro,
thank you for your tutorials.
I used them to install OM
about one year ago.

Configuration:
1. OM 5.0.0-M4
2. Ubuntu 18.04
3. Mariadb
4. Kurento
5. Tomcat
6. Coturn
7. OpenJava
8. Clients: Firefox, Chrome

OM was not too stable.
"Connection to MediaServer has been lost"
was the typical error message.

A couple of days ago we tested the OM server with two
clients (Firefox, Chrome).
But this time both client machines were connected
to the router with Ethernet cable which means
the WiFi was removed from the communication
channel.
Overall time of testing with Ethernet cable: 2 hours.
Result: no disruption, it works like a charm.

I want to upgrade OM
but I am not sure whether I will be
able to move some whiteboard material
(without converting to PNG or PDF) to the new OM.

Jox















Alvaro  ezt írta (időpont: 2021. jan. 24., V, 9:25):

>
> Hello,
>
> Is updated the tutorial:
>
> Installation OpenMeetings 5.1.0 on Centos 8
>
> ...the old LibreOffice version is not in the server to download,
> now is updated to 7.0.4.
>
> If you use this tutorial and find error installation please download it
> again.
>
> As allways can find it at:
>
>
> https://cwiki.apache.org/confluence/display/OPENMEETINGS/Tutorials+for+installing+OpenMeetings+and+Tools
>
> Thanks
>
> Alvaro
>
> ...
>
> 
>

result of testing

[jox joe]

Ubuntu 18.04
OM 5.0.0-M4
CoTurn

Testing with TWO clients.

Configuration 1:
client 1: Ethernet cable between the router and the computer
client 2: WIFI between the router and the computer

Configuration 2:
client 1: Ethernet cable between the router and the computer
client 2:  Ethernet cable between the router and the computer

Duration of test: 60 minutes

The result:
Configuration 1:
low voice quality
several disruptions (I had to restart the server.)
unstable

Configuration 1:
very good voice quality
no disruption
faster screen share
very stable

Conclusion: using WiFi is not really recommended
*
What is your experience?
Thank you

Re: Multimedia server is inaccessible

[jox joe]

 >I guess OM, KMS and system logs need to be examined to understand what is
wrong
Yes, debugging can answer this question.

Maxim Solodovnik  ezt írta (időpont: 2021. jan. 19.,
K, 15:32):

>
>
> On Tue, 19 Jan 2021 at 21:15, jox joe  wrote:
>
>> Thank you Maxim,
>>
>> >>connection between OM and KMS is broken
>>
>> then this is the actual question:
>> Why are OM and KMS disconnected?
>>
>
> I have no idea
> KMS at demo works without disconnections for weeks
>
> The system is Ubuntu 18.04
> KMS 6.15
> OpenJava 11
>
> I guess OM, KMS and system logs need to be examined to understand what is
> wrong
>
>
>> I can use another, similar platform (video+audio communication) in the
>> "same"
>> environment for hours without disconnection.
>>
>
> similar platform? maybe it has fewer bugs? :)))
> Or maybe environment isn't the same
>
>
>>
>> Jox
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Maxim Solodovnik  ezt írta (időpont: 2021. jan.
>> 19., K, 11:13):
>>
>>>
>>>
>>> On Mon, 18 Jan 2021 at 00:38, jox joe  wrote:
>>>
>>>> Hello everybody,
>>>>
>>>> "Multimedia server is inaccessible"
>>>> This message sometimes appears.
>>>> It would be good to know what it is caused by.
>>>> 1. By the Openmeetings server?
>>>> 2. By the Kurento mediaserver?
>>>> 3. By the browser(s)?
>>>> 4. By something else?
>>>>
>>>
>>> The message caused by the fact connection between OM and KMS is broken
>>> (initially broken or lost after some time)
>>> OM tries to auto-reconnect, so if KMS was re-started network issues are
>>> fixed the connection will be re-created
>>>
>>>
>>>> Debugging a communication module is time consuming
>>>> and cooperation is needed to determin what is the problem
>>>> in the given environment. The test servers do not help too much
>>>> in these cases.
>>>>
>>>> I tried the previous Openmeetings version (4.x/Flash and Red5 server)
>>>> and it was very stable.
>>>>
>>>> (I like the WHITEBOARD approach of Openmettings.)
>>>>
>>>> Any opinion?
>>>> Thank you.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>> --
>>> Best regards,
>>> Maxim
>>>
>>
>
> --
> Best regards,
> Maxim
>

Re: Multimedia server is inaccessible

[jox joe]

Thank you Maxim,

>>connection between OM and KMS is broken

then this is the actual question:
Why are OM and KMS disconnected?

I can use another, similar platform (video+audio communication) in the
"same"
environment for hours without disconnection.

Jox










Maxim Solodovnik  ezt írta (időpont: 2021. jan. 19.,
K, 11:13):

>
>
> On Mon, 18 Jan 2021 at 00:38, jox joe  wrote:
>
>> Hello everybody,
>>
>> "Multimedia server is inaccessible"
>> This message sometimes appears.
>> It would be good to know what it is caused by.
>> 1. By the Openmeetings server?
>> 2. By the Kurento mediaserver?
>> 3. By the browser(s)?
>> 4. By something else?
>>
>
> The message caused by the fact connection between OM and KMS is broken
> (initially broken or lost after some time)
> OM tries to auto-reconnect, so if KMS was re-started network issues are
> fixed the connection will be re-created
>
>
>> Debugging a communication module is time consuming
>> and cooperation is needed to determin what is the problem
>> in the given environment. The test servers do not help too much
>> in these cases.
>>
>> I tried the previous Openmeetings version (4.x/Flash and Red5 server)
>> and it was very stable.
>>
>> (I like the WHITEBOARD approach of Openmettings.)
>>
>> Any opinion?
>> Thank you.
>>
>>
>>
>>
>>
>
> --
> Best regards,
> Maxim
>

Re: OpenMeetings Performance Testing results with 100 concurrent users

[jox joe]

Hello Sebastion,
thank you for the good news.
Yes, you are right. Testing the real-time/interactive communication moduls
is
very expensive/time consuming.
The real-time function does not come for free which
can mean that the available hardware and software resources
are not sufficient. The environment of such an application
is rather complicated not to mention the fact that not all components
are developed by one team (OM server, Kurento media server, database
server, CoTurn, browsers).
Still OM has improved a lot in the last couple of years and will improve in
the future.
Jox



seba.wag...@gmail.com  ezt írta (időpont: 2021. jan.
18., H, 22:12):

> We did complete some performance testing:
> ~ 100 concurrent users
> ~ 10 conference rooms, 4 users in each, everyone has audio/video turned on
> ~ 2 webinar rooms, 26 users each, 1 presenter has audio/video turned on
>
> Results can be seen here:
> https://om-hosting.com/medium-server-performance-test-results/
>
> Generally the tests look pretty good. And it should be possible to add
> more hardware and do bigger tests.
> We plan to do a new round of tests with bigger specs and more users soon.
>
> However: Above tests are more like linear scaling, rather than entering
> all users at same time:
>  - There are some issues if you have a lot of users entering the
> conference room at the same moment/second. Like a surge of 10-20 users that
> all enter at the same time the conference room.
>  - The problem manifests that sometimes a user won't have his audio/video
> sharing. You can see some screenshots where you have only 3 audio/video
> pods, instead of 4. That is exactly the problem. There are some race
> conditions. If you have more people entering at the same time, the problem
> gets bigger and more audio/video pods won't show up
>  - The problem is not only with people within the same room, but also
> affects other rooms (lets say having 2 conference room, and all users of
> both rooms enter within the same 5 seconds the conference room
>  - There isn't any exception or client side Javascript error. But the
> audio/video just doesn't pop up.
>
> This is a common issue and also very hard to test for. But something maybe
> to look into more.
> It is a relatively unrealistic test, but obviously with the number of
> users increasing, the likelihood of having multiple users entering a
> conference room at the same time increases.
>
> I think it is still a good result in terms of next steps and bigger
> servers.
>
> Thanks,
> Seb
>
> Sebastian Wagner
> Director Arrakeen Solutions, OM-Hosting.com
> http://arrakeen-solutions.co.nz/
> https://om-hosting.com - Cloud & Server Hosting for HTML5
> Video-Conferencing OpenMeetings
>
> 
> 
>

Re: save recording in mp3 format

[jox joe]

Hello Boris,

you can upload videos to the WHITEBOARDS.
I do not use the OM recording function.
The cutting edge of OM is the WHITEBOARD.

> Is this possible?
I've never tried this.

Jox


Boris Sagadin  ezt írta (időpont: 2021. jan. 18., H,
6:12):

> Hi Joe,
>
> we can do that, but would want the converted file to be somehow added
> and accessible via OM GUI in "My Recordings". Is this possible?
>
> Lep pozdrav,
>
> Boris Sagadin
> InfoSplet, informacijske tehnologije, d.o.o.
> www.infosplet.com | Tel: 0590 / 45 800, GSM: 041 / 337 848
>
>
> V V ned., 17. jan. 2021 ob 11:54 je oseba jox joe 
> napisala:
> >
> > Hello Boris,
> > if you have a recorded video it is possible to convert it to any format
> with a suitable
> > software and you can extract the audio, too, if you want to.
> >
> > Boris Sagadin  ezt írta (időpont: 2021. jan. 17.,
> V, 9:28):
> >>
> >> Hello,
> >>
> >> is there perhaps an option to save audio recordings in mp3 format? We
> >> have no need for video format, and need mp3 files only, for audio
> >> conferencing.
> >>
> >> Regards
>

Re: Multimedia server is inaccessible

[jox joe]

 Hello kaffeesurrogat,
jawohl (=yes), CoTurn is installed and tested based on your
previous posts. I forgot to mention CoTurn.
I'm going to have more time after 2021. June and will try to run
some tests.
The amended list:
It would be good to know what
"Multimedia server is inaccessible" is caused by.
1. By the Openmeetings server?
2. By the Kurento mediaserver?
3. By the browser(s)?
4. By CoTurn?
5. By something else?

Example for item 5: quality/speed of the internet connection.

COMMAND:
turnutils_uclient -T -W  
***OUTPUT:
0: Total connect time is 0
0: 2 connections are completed
1: start_mclient: msz=2, tot_send_msgs=0, tot_recv_msgs=0, tot_send_bytes ~
0, tot_recv_bytes ~ 0
2: start_mclient: msz=2, tot_send_msgs=0, tot_recv_msgs=0, tot_send_bytes ~
0, tot_recv_bytes ~ 0
3: start_mclient: msz=2, tot_send_msgs=0, tot_recv_msgs=0, tot_send_bytes ~
0, tot_recv_bytes ~ 0
4: start_mclient: msz=2, tot_send_msgs=5, tot_recv_msgs=5, tot_send_bytes ~
500, tot_recv_bytes ~ 500
5: start_mclient: msz=2, tot_send_msgs=5, tot_recv_msgs=5, tot_send_bytes ~
500, tot_recv_bytes ~ 500
6: start_mclient: msz=2, tot_send_msgs=5, tot_recv_msgs=5, tot_send_bytes ~
500, tot_recv_bytes ~ 500
6: start_mclient: tot_send_msgs=10, tot_recv_msgs=10
6: start_mclient: tot_send_bytes ~ 1000, tot_recv_bytes ~ 1000
6: Total transmit time is 6
6: Total lost packets 0 (0.00%), total send dropped 0 (0.00%)
6: Average round trip delay 4.70 ms; min = 0 ms, max = 23 ms
6: Average jitter 8.90 ms; min = 0 ms, max = 24 ms
***
In the coturn log I can see this sometimes:
31: session 00302: realm  user <>: incoming packet message
processed, error 401: Unauthorized
As far as I know it is a  legitimate message.
Thank you.





kaffeesurrogat  ezt írta (időpont: 2021. jan.
17., V, 19:29):

> did you install coturn ?
>
> On 17/01/2021 18:38, jox joe wrote:
> > Hello everybody,
> >
> > "Multimedia server is inaccessible"
> > This message sometimes appears.
> > It would be good to know what it is caused by.
> > 1. By the Openmeetings server?
> > 2. By the Kurento mediaserver?
> > 3. By the browser(s)?
> > 4. By something else?
> >
> > Debugging a communication module is time consuming
> > and cooperation is needed to determin what is the problem
> > in the given environment. The test servers do not help too much
> > in these cases.
> >
> > I tried the previous Openmeetings version (4.x/Flash and Red5 server)
> > and it was very stable.
> >
> > (I like the WHITEBOARD approach of Openmettings.)
> >
> > Any opinion?
> > Thank you.
> >
> >
> >
> >
>
>

Multimedia server is inaccessible

[jox joe]

Hello everybody,

"Multimedia server is inaccessible"
This message sometimes appears.
It would be good to know what it is caused by.
1. By the Openmeetings server?
2. By the Kurento mediaserver?
3. By the browser(s)?
4. By something else?

Debugging a communication module is time consuming
and cooperation is needed to determin what is the problem
in the given environment. The test servers do not help too much
in these cases.

I tried the previous Openmeetings version (4.x/Flash and Red5 server)
and it was very stable.

(I like the WHITEBOARD approach of Openmettings.)

Any opinion?
Thank you.

Re: save recording in mp3 format

[jox joe]

Hello Boris,
if you have a recorded video it is possible to convert it to any format
with a suitable
software and you can extract the audio, too, if you want to.

Boris Sagadin  ezt írta (időpont: 2021. jan. 17., V,
9:28):

> Hello,
>
> is there perhaps an option to save audio recordings in mp3 format? We
> have no need for video format, and need mp3 files only, for audio
> conferencing.
>
> Regards
>

Re: Full screen in smarphone landscape mode

[jox joe]

Hello Jitendra,

>Another fact is that many of my students don't own laptops/desktops and
cannot afford one.

Yes, that's true. But governments are responsible for that.
This community works hard to develope and improve OM and provide it for
free.
Those who can afford should support students (internet, laptop) esecially
now (COVID-19).

Next time I'm going to post the result of COTURN testing.
My plan is to install the newest OM according to Maxim's suggestion.

Regards
Jox


GuruCoool Learnings  ezt írta (időpont: 2021. jan. 9.,
Szo, 13:15):

> I agree with you Jox. I also advocate attending live classes on
> laptop/desktop but I can only suggest them.
> Another fact is that many of my students don't own laptops/desktops and
> cannot afford one.
>
> I am thankful to the OM-team to provide such a great platform for free to
> the society due to which it is possible for
> everyone to get affordable education online.
>
> Regards
> Jitendra
>
> On Sat, 9 Jan 2021 at 17:36, jox joe  wrote:
>
>> >Since most of my students attend live online classes on their smartphones
>> Smartphones are not really suitable for serious online learning.
>> This is why developers started to prepare the applications for big
>> screens.
>> OM is a server-client architecture and the client is an internet (www)
>> browser.
>> The lack of international standard for browsers makes it very hard to meet
>> the requirements of ALL browsers. Some server-client teaching platforms
>> have their own client application that is developed by the same team.
>>
>>
>> GuruCoool Learnings  ezt írta (időpont: 2021. jan.
>> 9., Szo, 10:22):
>>
>>> Sorry, I forgot to attach the link to that site. Here is the link that I
>>> mentioned in above mail-
>>>
>>> https://projects-42.nl/index.php/2018/ubuntu-18-04-lts-kiosk-for-web-or-rdp/
>>>
>>> Regards
>>> Jitendra
>>>
>>> On Sat, 9 Jan 2021 at 15:50, GuruCoool Learnings 
>>> wrote:
>>>
>>>> I have got a link which guides about setting up chrome browser in kiosk
>>>> mode that I guess means full screen mode.
>>>> Any guidance on it?
>>>>
>>>> Regards
>>>> Jitendra
>>>>
>>>> On Sat, 9 Jan 2021 at 13:14, GuruCoool Learnings 
>>>> wrote:
>>>>
>>>>> Okay.
>>>>> Thanks Max for your reply.
>>>>>
>>>>> I am still seeking suggestions on it. I would like to explain again my
>>>>> requirements here-
>>>>> 1. Since most of my students attend live online classes on their
>>>>> smartphones and OM meetings run on browsers so it is a requirement that
>>>>> they can see the session full screen.
>>>>> 2. I also want them to be able to zoom in and out as per requirements
>>>>> directly touching the screen may be that is the whiteboard area.
>>>>>
>>>>> Seeking your help and suggestions
>>>>> Thanks and regards
>>>>> Jitendra
>>>>>
>>>>> On Thu, 7 Jan 2021 at 05:54, Maxim Solodovnik 
>>>>> wrote:
>>>>>
>>>>>> Hello Jitendra,
>>>>>>
>>>>>> If I understand your mail correctly you need client browser to be
>>>>>> full screen
>>>>>> I would recommend you to perform internet search on topic
>>>>>> I was able to find couple of how-tos but had no time to check which
>>>>>> one will work
>>>>>>
>>>>>> On Tue, 5 Jan 2021 at 19:33, GuruCoool Learnings 
>>>>>> wrote:
>>>>>>
>>>>>>> Any update on how to add functionality for the sessions to become
>>>>>>> full screen for my users taking sessions on smartphones in landscape 
>>>>>>> mode?
>>>>>>>
>>>>>>> On Mon, 4 Jan 2021 at 00:07, GuruCoool Learnings 
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi Maxim,
>>>>>>>> While in a session via smartphone landscape mode, students will be
>>>>>>>> more comfortable if the session is full screen.
>>>>>>>>
>>>>>>>> I searched the net and found some commands in the following link
>>>>>>>>
>>>>>>>> https://askubuntu.com/questions/1034624/touchpad-gestures-in-ubuntu-18-04-lts
>>>>>>>>
>>>>>>>> sudo gpasswd -a $USER input
>>>>>>>> sudo apt-get install libinput-tools
>>>>>>>> sudo apt-get install xdotool
>>>>>>>> et cetera.
>>>>>>>>
>>>>>>>> But I am not sure which directory I should try these commands with.
>>>>>>>>
>>>>>>>> Please help on how I can enable full screen mode so that whenever a
>>>>>>>> student uses landscape mode of smartphone, it automatically goes full
>>>>>>>> screen.
>>>>>>>>
>>>>>>>> Thanks and regards
>>>>>>>> Jitendra
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> Best regards,
>>>>>> Maxim
>>>>>>
>>>>>

Re: Full screen in smarphone landscape mode

[jox joe]

 >Since most of my students attend live online classes on their smartphones
Smartphones are not really suitable for serious online learning.
This is why developers started to prepare the applications for big screens.
OM is a server-client architecture and the client is an internet (www)
browser.
The lack of international standard for browsers makes it very hard to meet
the requirements of ALL browsers. Some server-client teaching platforms
have their own client application that is developed by the same team.


GuruCoool Learnings  ezt írta (időpont: 2021. jan. 9.,
Szo, 10:22):

> Sorry, I forgot to attach the link to that site. Here is the link that I
> mentioned in above mail-
>
> https://projects-42.nl/index.php/2018/ubuntu-18-04-lts-kiosk-for-web-or-rdp/
>
> Regards
> Jitendra
>
> On Sat, 9 Jan 2021 at 15:50, GuruCoool Learnings 
> wrote:
>
>> I have got a link which guides about setting up chrome browser in kiosk
>> mode that I guess means full screen mode.
>> Any guidance on it?
>>
>> Regards
>> Jitendra
>>
>> On Sat, 9 Jan 2021 at 13:14, GuruCoool Learnings 
>> wrote:
>>
>>> Okay.
>>> Thanks Max for your reply.
>>>
>>> I am still seeking suggestions on it. I would like to explain again my
>>> requirements here-
>>> 1. Since most of my students attend live online classes on their
>>> smartphones and OM meetings run on browsers so it is a requirement that
>>> they can see the session full screen.
>>> 2. I also want them to be able to zoom in and out as per requirements
>>> directly touching the screen may be that is the whiteboard area.
>>>
>>> Seeking your help and suggestions
>>> Thanks and regards
>>> Jitendra
>>>
>>> On Thu, 7 Jan 2021 at 05:54, Maxim Solodovnik 
>>> wrote:
>>>
 Hello Jitendra,

 If I understand your mail correctly you need client browser to be full
 screen
 I would recommend you to perform internet search on topic
 I was able to find couple of how-tos but had no time to check which one
 will work

 On Tue, 5 Jan 2021 at 19:33, GuruCoool Learnings 
 wrote:

> Any update on how to add functionality for the sessions to become full
> screen for my users taking sessions on smartphones in landscape mode?
>
> On Mon, 4 Jan 2021 at 00:07, GuruCoool Learnings 
> wrote:
>
>> Hi Maxim,
>> While in a session via smartphone landscape mode, students will be
>> more comfortable if the session is full screen.
>>
>> I searched the net and found some commands in the following link
>>
>> https://askubuntu.com/questions/1034624/touchpad-gestures-in-ubuntu-18-04-lts
>>
>> sudo gpasswd -a $USER input
>> sudo apt-get install libinput-tools
>> sudo apt-get install xdotool
>> et cetera.
>>
>> But I am not sure which directory I should try these commands with.
>>
>> Please help on how I can enable full screen mode so that whenever a
>> student uses landscape mode of smartphone, it automatically goes full
>> screen.
>>
>> Thanks and regards
>> Jitendra
>>
>

 --
 Best regards,
 Maxim

>>>