[yashovardhan]

Hello all,

I am using blackberry JDE 4.0.2 for developing standalone application.
i am getting this exception:Java.io.IOException:could not open tunnel - failed
when i try to run the application in the actual device which uses javax.microedition.io.httpConnection class to open a httpConnection.
But in the simulator it works fine and i am able to retrieve the the data.But i am facing this problem when i actually try to run the application on the actual blackberry device.I am using blackberry 7230.
Any help on this will be appreciated.

thanks in advance

[jfisher]

problems opening a tunnel usually relate to the device needing to have it's apn set in options > advanced > TCP

also be sure that your http connection class is in it's own thread.

[yashovardhan]

hi jfisher ,

I am using Airtel india connection. they are telling APN details are not given to customers. Is there any way to make third party application which opens httpconnection across the network work...

Any other way to make it work????

[CPO]

I take it you have a BIS account rather than a hosted BES? If that's the case then you could try appending ";deviceside=false" to the HTTP URL you are trying to connect to.

[bbCincinnati]

For what it's worth to anyone who might run into this problem in the future...

I was having exactly the same problem; the application ran fine on the simulator, but on the actual device (8700c) I got the same error:

Java.io.IOException: could not open tunnel - failed

Jfisher was right; my problem was an APN setup issue.

I searched around and found: "Mark's Big BerryFAQ" (on Blackberry Forums) and under that: "How to Configure Full Internet Access On BlackBerry".

http://www.blackberryforums.com/blac...ip-no-bes.html.

Mark has the APN, Username, and Password listed for many carriers. For example,

Cingular (orange)
APN: wap.cingular
Username:
Password: CINGULAR1

After I changed these settings, my error changed to:

Java.io.IOException: Bad DNS Address

However, that error seemed to go away after I unloaded and reloaded the application on the device a few times. Anyway, it seems to work fine now