[Chilli] Coova-Chilli Redirection Problem

[Xabier Oneca -- xOneca]

Hello Peter,

2014-02-05 Peter Wagner <peter.wagner at unwired.at>:
> Hi,
>
> i successfully installed Coova-Chilli on Openwrt and it works fine.
>
> Except in a special case:
>
> 1) A user opens a webpage like "orf.at" on a mobile device. The device is connected to some other
> wifi network.
>
> 2) The user disconnects from the wifi network and connects to my Coova-Chilli wifi network.
>
> 3) The user trys to reopen the site (orf.at in this case). And has no authenticated session.
>    The expected behaviour would be to get redirected to the captive portal page.
>
> 4) Instead, no redirect is sent at all. (see tcpdump - packet #55)

I do see a response from CoovaChilli, but the client resets the connection.

I see the first conversation in frames 57-97 (see by yourself in the
menu "Analyze → Follow TCP Stream" in Wireshark)

Then a retry in frames 84-136 and happens the same.

Finally in frames 123-173. And client also resets the connection.

> 5) User sees the message "Website not available"

Yes. It should redirect to the captive portal, but for some reason the
client is resetting the connection...

Maybe you could run tcpdump in a client?

> 6) The user requests the site heisse.de (!= orf.at in this case) (see tcpdump package #402)
>
> 7) The redirect is sent and the user is redirected to the captive partal page.

Yes. That's seen in frames 404-468 and captive portal loading in 473-609.

> What could be the cause of this problem? I'm using the latest version of Coova-Chilli and use this cmdline options:
>
> /usr/sbin/chilli  -c /etc/chilli.conf --fg --dhcpnotidle
> --radiusoriginalurl --lease 300 --pidfile=/var/run/chilli.pid
> --definteriminterval 60 --usestatusfile /tmp/chilli.status
> --seskeepalive --proxyonacct --uamgardendata --uamotherdata
> --locationimmediateupdate --nousergardendata --patricia
> --proxylocattr=32 --redirssl --redirurl
>
> With kind regards,
> Peter Wagner

Cheers,

Xabier Oneca_,,_