httpTunnel is waiting for repsonse

[Cedric Biedermann <ce...@gmail.com>]

Hi,

I have the problem that an external user have to connect with his company
laptop to our guacamole server, and use a connection. His laptop seems to
be kind of secure and does not allow websockets, at least guacamole tries
to use httpTunnel.
However, the user can log in, but is not able to connect to the connection.
In the syslog, we see that the tomcat builds up a connection, but the user
just sees:
"Connected to Guacamole. Waiting for response..."
In the web-devTools I see that the "tunnel?connect"  was successful, and I
see a lot of tunnel?write request, which all ends with 200, (which I also
see in the tomcat-logs).
I can not find any error message which describe why the user cannot get an
image.

The small troubleshooting paragraph did not help me, everything runs
already over https, and independent of his network, the connection does not
work for his laptop.
https://guacamole.apache.org/doc/gug/troubleshooting.html#no-graphics-appear

Is there maybe any client code which cannot be executed?
What can I test/do to get more information and logs (log level is already
high)?
What are things which can do this trouble?

Thank you for your help.

Cedric

ps: How can I answer to questions from other users per email?
pss: Should I post this also into JIRA?

Re: httpTunnel is waiting for repsonse

[Cedric Biedermann <ce...@gmail.com>]

Thank you, I have to wait till I have a next meeting with him or somebody
from his company which does the architecture to get more information.


Am Fr., 10. März 2023 um 05:20 Uhr schrieb Michael Jumper <
mjumper@apache.org>:

> On Thu, Mar 9, 2023, 6:33 AM Cedric Biedermann <ce...@gmail.com>
> wrote:
>
>> Hi,
>>
>> I have the problem that an external user have to connect with his company
>> laptop to our guacamole server, and use a connection. His laptop seems to
>> be kind of secure and does not allow websockets, at least guacamole tries
>> to use httpTunnel.
>>
>
> If something is interfering with the stream of data, it may prevent even
> the HTTP tunnel from functioning. There may not be much that can be done
> unless the external user in question can configure whatever is intercepting
> the stream to stream things through without disruptive levels of buffering.
>
> However, the user can log in, but is not able to connect to the connection.
>> In the syslog, we see that the tomcat builds up a connection, but the
>> user just sees:
>> "Connected to Guacamole. Waiting for response..."
>> In the web-devTools I see that the "tunnel?connect"  was successful, and
>> I see a lot of tunnel?write request, which all ends with 200, (which I also
>> see in the tomcat-logs).
>> I can not find any error message which describe why the user cannot get
>> an image.
>>
>
> There probably really is no error - just a total lack of received data,
> because something between the browser and the Guacamole server is
> intercepting that data.
>
> The small troubleshooting paragraph did not help me, everything runs
>> already over https, and independent of his network, the connection does not
>> work for his laptop.
>>
>> https://guacamole.apache.org/doc/gug/troubleshooting.html#no-graphics-appear
>>
>
> Is there anything else on the network in front of the Guacamole server
> that might be interfering with traffic? A proxy?
>
> Is there maybe any client code which cannot be executed?
>> What can I test/do to get more information and logs (log level is already
>> high)?
>> What are things which can do this trouble?
>>
>> Thank you for your help.
>>
>> Cedric
>>
>> ps: How can I answer to questions from other users per email?
>>
>
> Just respond as you would any email. Any email that goes to
> user@guacamole.apache.org address will go to the list, including your
> responses.
>
> pss: Should I post this also into JIRA?
>>
>
> No, it is extremely unlikely that this is a bug:
>
> https://guacamole.apache.org/faq/#probably-not-a-bug
>
> - Mike
>
>

Re: httpTunnel is waiting for repsonse

[Michael Jumper <mj...@apache.org>]

On Thu, Mar 9, 2023, 6:33 AM Cedric Biedermann <ce...@gmail.com>
wrote:

> Hi,
>
> I have the problem that an external user have to connect with his company
> laptop to our guacamole server, and use a connection. His laptop seems to
> be kind of secure and does not allow websockets, at least guacamole tries
> to use httpTunnel.
>

If something is interfering with the stream of data, it may prevent even
the HTTP tunnel from functioning. There may not be much that can be done
unless the external user in question can configure whatever is intercepting
the stream to stream things through without disruptive levels of buffering.

However, the user can log in, but is not able to connect to the connection.
> In the syslog, we see that the tomcat builds up a connection, but the user
> just sees:
> "Connected to Guacamole. Waiting for response..."
> In the web-devTools I see that the "tunnel?connect"  was successful, and I
> see a lot of tunnel?write request, which all ends with 200, (which I also
> see in the tomcat-logs).
> I can not find any error message which describe why the user cannot get an
> image.
>

There probably really is no error - just a total lack of received data,
because something between the browser and the Guacamole server is
intercepting that data.

The small troubleshooting paragraph did not help me, everything runs
> already over https, and independent of his network, the connection does not
> work for his laptop.
>
> https://guacamole.apache.org/doc/gug/troubleshooting.html#no-graphics-appear
>

Is there anything else on the network in front of the Guacamole server that
might be interfering with traffic? A proxy?

Is there maybe any client code which cannot be executed?
> What can I test/do to get more information and logs (log level is already
> high)?
> What are things which can do this trouble?
>
> Thank you for your help.
>
> Cedric
>
> ps: How can I answer to questions from other users per email?
>

Just respond as you would any email. Any email that goes to
user@guacamole.apache.org address will go to the list, including your
responses.

pss: Should I post this also into JIRA?
>

No, it is extremely unlikely that this is a bug:

https://guacamole.apache.org/faq/#probably-not-a-bug

- Mike