HTTP tunnel request failed

[Max <mc...@yahoo.com.INVALID>]

Hi:
After a couple of days going crazy with this problem, I figured out how to solve it so just leaving this here for future google surfers:
Suddenly my guacamole server stopped working, the logs just showed this error:
11:03:14.552 [ajp-nio-8009-exec-3] DEBUG o.a.g.net.InetGuacamoleSocket - Connecting to guacd at localhost:4822. 11:03:14.553 
[ajp-nio-8009-exec-3] ERROR o.a.g.s.GuacamoleHTTPTunnelServlet - HTTP tunnel request failed: java.net.ConnectException:  Connection refused (Connection refused)After a lot of search, I used 127.0.0.1 instead of localhost in the guacamole.properties as it worked for other people but no for me.
guacd-hostname: 127.0.0.1
guacd-port: 4822 
Until I noticed that the guacd service was listening in ::1 but not in 127.0.0.1 

Proxy daemon (guacd) version 1.4.0 started mar 30 11:00:33 Server1 guacd[1300]: SUCCESS mar 30 11:00:33 Kalandraka guacd[1303]: Listening on host ::1, port 4822So, as I am not using Ipv6, just disabled it adding this entry:
net.ipv6.conf.all.disable_ipv6 = 1
To the /etc/sysctl.conf file and restart the system.
Now It works fine.
I hope this helps someone.
Best regards

Re: HTTP tunnel request failed

[Nick Couchman <vn...@apache.org>]

On Wed, Mar 30, 2022 at 5:40 AM Max <mc...@yahoo.com.invalid> wrote:

> Hi:
>
> After a couple of days going crazy with this problem, I figured out how to
> solve it so just leaving this here for future google surfers:
>
> Suddenly my guacamole server stopped working, the logs just showed this
> error:
>
> 11:03:14.552 [ajp-nio-8009-exec-3] DEBUG o.a.g.net.InetGuacamoleSocket -
> Connecting to guacd at localhost:4822. 11:03:14.553
>
> [ajp-nio-8009-exec-3] ERROR o.a.g.s.GuacamoleHTTPTunnelServlet - HTTP tunnel request failed: java.net.ConnectException:  Connection refused (Connection refused)
>
> After a lot of search, I used 127.0.0.1 instead of localhost in the guacamole.properties as it worked for other people but no for me.
>
> guacd-hostname: 127.0.0.1
> guacd-port: 4822
>
>
> Until I noticed that the guacd service was listening in ::1 but not in
> 127.0.0.1
>
> Proxy daemon (guacd) version 1.4.0 started mar 30 11:00:33 Server1 guacd[1300]: SUCCESS mar 30 11:00:33 Kalandraka guacd[1303]: Listening on host ::1, port 4822
>
> So, as I am not using Ipv6, just disabled it adding this entry:
>
> net.ipv6.conf.all.disable_ipv6 = 1
>
> To the /etc/sysctl.conf file and restart the system.
>
>
You can also force guacd to listen on the IPv4 port, without disabling IPv6
altogether. You do this by setting "bind_host" to 127.0.0.1 in
/etc/guacd.conf. See:

https://guacamole.apache.org/doc/gug/configuring-guacamole.html#configuring-guacd

-Nick