ios - Failure to reconnect after De-authentication from Cisco AP Wifi -


apologizing in advance, no 802.11 expert , long winded question...

i working on ios voip client, use cocoaasyncsocket library our tcp/udp connections. app/idevice allowed roam in/out of wifi coverage (for purposes of discussion assume app using wifi only... no cellular connection). have appropriate plist settings backgroundmode (voip, audio) requiring persistent wifi.

we having problem seems particular cisco ap's. client app in foreground , roaming out , in of wifi range, noticed ios device not automatically rejoin network. after great deal of debug failure rejoin noted have nothing app. failure re-join can reproduced forcing ap (via config) deauthenticate idevice 3 times. after 1st , 2nd deauthentications, idevice readily automatically re-joins. after 3rd time, ios not automatically rejoin network.

the network rejoined if, example, ios email app put in foreground.

we curious if other voip type apps suffered problem, , ran experiment running facetime , skype on ios device.

skype behaved our voip app, after 3rd deauth connection lost. trying initiate call resulted in message effect of "must have internet connection make call".

facetime did disconnect on 3rd deauth , failed automatically rejoin... however, able re-initiate facetime call caused ios rejoin network , make call.

we emulate facetime behavior, far not understand should doing differently. best of our knowledge, closing open sockets when disconnected. familiar issue , have insight offer?


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