Re: UDP connection over GPRS/3G fails when Wifi is ON

samkol649 wrote on 17 jun 2008 in microsoft.public.pocketpc.developer:

On Jun 17, 2:13 pm, "Evertjan." <exjxw.hannivo...@xxxxxxxxxxxx> wrote:
samkol649 wrote on 17 jun 2008 in
microsoft.public.pocketpc.developer:



On Jun 16, 5:36 pm, "Evertjan." <exjxw.hannivo...@xxxxxxxxxxxx>
wrote:
samkol649 wrote on 16 jun 2008 in
microsoft.public.pocketpc.developer:

I appreciate very much if anyone can help me or provide some
comments.

I have a HTC TyTN. With this product, I can send UDP packets to
a UDP server over the GPRS/3G network ( I downloaded a free
trial IPer 6.0 product to generate UPD traffic. You can find the
product at
http://handheld.softpedia.com/get/Internet-Utilities/Testers/IPer-
100 64
.shtml). This works when the Wifi is OFF. However, when the Wifi
is ON, the UDP server cannot receive any data packets, even a
single one.

So, my question is does anyone here experience the same problem
before? If not, can anyone verify if your device behave similar
to mine.

Thank you very much, and I am looking forward for your reply.

I would think the firewall of your wifi-router blocks the specific
udp- port. You should be able to correct that.

[please do not quote signatures on usenet]

Thank Evertjan for your reply,

I did not use wifi to send the UDP packets. I used GPRS interface
to do so. This works fine when wifi is OFF, but when wifi is ON, we
cannot send any UDP packets. Moreover, I can also send the UDP
packets using wifi, and hence, there should not be any issues with
the wifi- router or port blocking. Do you have any other ideas? Did
you try to run the same test on your device?

That is implicit, as probably the GPRS connection will not be used if
there is an active WIFI connection to the web.
Otherwise it could cost you data stream payment, even when a free
connection is available.
At least my Touch Cruise acts that way if both connecions are active.


[please do not quote signatures on usenet]


Thanks again Evertjan,

Did you mean that your Touch Cruise acts the same as my device?
The GPRS connection stops when there is active WiFi connection?

Well I use 3G/UMTS, but the pronciple is the same. ;-)

No, the GPRS or 3G connection is helt, but is not used,
as the wifi connection has priority.

Is this something to do with Connection Manager?

I don't think the connection manager does other than swich on and off?

It is the logical way to behave.

And you would not expect the ppc system to try GPRS just for that packet
when an outgoing udp port is closed on the router?

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)
.

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