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New Developer
Posts: 3
Registered: ‎08-13-2008
My Device: Not Specified

Developing programs that can use wi-fi without specifying ;interface=wifi on url.

I have read in this forum and in the knowledge base that a blackberry program will automatically use a wi-fi network if the device is connected to it.  And no special changes are needed to the program to get this behavior.

 

I have a program that uses the internet, but I can not get it to use a connected wi-fi network unless ";interface=wifi" is appended to the url.  We are using version 4.1.0 as the target build for all devices so I don't really want to try and detect if wi-fi is available.  The device I am testing with is a Bold and I have tried compiling the program using versions 4.1,4.2 and 4.6 and that doesn't seem to effect the behavior. The Bold uses BIS, and if I turn off the radio, but have a wi-fi connection, my program can not access the network unless the interface=wifi is used.

 

So am I wrong in assuming that wi-fi usage should be transparent to a program using the internet? I am getting a connection like this:  conn = (HttpConnection) Connector.open(url, Connector.READ_WRITE, true);

 

Any thoughts and/or suggestions would be appreciated.

 

Perry

Developer
Posts: 19,636
Registered: ‎07-14-2008
My Device: Not Specified

Re: Developing programs that can use wi-fi without specifying ;interface=wifi on url.

I suggest you review the Network Transports video:

http://www.blackberry.com/DevMediaLibrary/view.do?name=NetworkingTransports

 

This explains under what circumstances the device will route data over WiFi rather than wireless.  The key seems to be that it must first establish a wireless connection to whatever home base is, verify that it is getting to that using WiFi, then it will use WiFi automatically.

 

Regarding other WiFi questions, there are a number of useful WiFi Threads on this forum, I encourage you to review.  Some ones I think are useful are:

 

http://supportforums.blackberry.com/rim/board/message?board.id=java_dev&message.id=16000

 

http://supportforums.blackberry.com/rim/board/message?board.id=java_dev&thread.id=898

 

http://supportforums.blackberry.com/rim/board/message?board.id=java_dev&message.id=17067