Here's another one - it bit me just the other day. - I was at a restaurant that offered a free HotSpot. (although exactly the same scenario would apply if I was staying at many hotels, or at an airport, or any number of other locations that offer "free" WiFi) - I told my phone to connect to the HotSpot. It attached to the AP and got an IP address. - At that point the phone "preferred" to use WiFi - even though all I was able to see was the login page for the WiFi service. - Suddenly my app is unable to communicate with servers - I had to disable WiFi to get it to use the cellular network.
Now, you could argue that all I needed to do was open my browser and accept the terms of the HotSpot and I'd have access to (at least some) data services, but: 1) What if my app doesn't connect using a "well known" port? (i.e. one that the HotSpot will *probably* allow... HTTP/S, IMAP, SMTP, POP3) 2) What if my application communicates with my carriers servers which are inside their walled-garden, and for obvious reasons are only accessible via the cellular network? 3) What if the AP's internet connection is down? I suggest that Android be extended to allow an application to specify (and this is only a start) whether it wishes to take advantage of WiFi should it be available. That would allow an application to choose to "pass" on a WiFi connection and continue to use cellular data. (obviously the default would be the status quo) Its not like you'd be leading in this area - many (most?) of the other mobile platforms allow an app (either programmatically or via configuration) to specify which data services it will use - regardless of the presence of other options. Doug On Feb 2, 9:35 pm, Kevin Duffey <andjar...@gmail.com> wrote: > For development reasons, I have to switch wifi off to make use of 3G to > route my requests to a domain name that then maps to one of my internal > servers (using no-ip.com to forward a dns name to my provider IP.. and > setting up my router to forward http requests to proper server). I can also > do this by using the internal IP of my computer, but then I have to set up > hosts and such to get it out to find the dns entry that then routes it back > to my ip. It's a development issue only.. but thought I'd share that issue. > I manually switch it off myself tho, so not quite the same thing. > > 2010/2/2 Dongjoon Lee <sky...@gmail.com> > > > > > The application needs to get some information from operator's server. > > And operator want us to make use operator's network, not wifi, even > > though wifi is available. > > > It's very difficult to find solution. May I need to search alternative > > way. > > > Anyway, thanks for your advice. > > > Best regards, > > Dongjoon. > > > On 1월15일, 오후7시17분, Jens <dunkingbikk...@gmail.com> wrote: > > > For the same reason you added the "feature" that allows the MMS > > > application to switch to a specific APN even when WiFi is > > > available..... lots of mobile apps require you to go through a > > > specific APN - for billing purposes amongst other things. > > > > Dongjoon: You could check if the same crazed hack that allows the MMS > > > application to work can be used by you? > > > > Br > > > Jens > > > > On 14 Jan, 19:07, Dianne Hackborn <hack...@android.com> wrote: > > > > > Sorry, I don't believe you can. Why do you want to do this? > > > > > On Thu, Jan 14, 2010 at 12:39 AM, Dongjoon Lee <sky...@gmail.com> > > wrote: > > > > > Hello. > > > > > > My question is, as you can see the title, can i use3gnetwork even > > > > > though wi-fi is available? > > > > > i heard wi-fi priority is higher than3gor cdma. can i change that > > > > > priority in specific application? > > > > > this is one of requirement of the project. if anybody has an answer, > > > > > plz help me. > > > > > > thanks in advance. > > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > > > Groups "Android Developers" group. > > > > > To post to this group, send email to > > android-developers@googlegroups.com > > > > > To unsubscribe from this group, send email to > > > > > android-developers+unsubscr...@googlegroups.com<android-developers%2Bunsubs > > > > > cr...@googlegroups.com> > > <android-developers%2bunsubs-cr...@googlegroups.com<android-developers%252B > > unsubs-cr...@googlegroups.com> > > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/android-developers?hl=en > > > > > -- > > > > Dianne Hackborn > > > > Android framework engineer > > > > hack...@android.com > > > > > Note: please don't send private questions to me, as I don't have time > > to > > > > provide private support, and so won't reply to such e-mails. All such > > > > questions should be posted on public forums, where I and others can see > > and > > > > answer them.- 원본 텍스트 숨기기 - > > > > - 원본 텍스트 보기 - > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to android-developers@googlegroups.com > > To unsubscribe from this group, send email to > > android-developers+unsubscr...@googlegroups.com<android-developers%2Bunsubs > > cr...@googlegroups.com> > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
