???????????????????????????????????????????????????????????????????????????????????????????????????????????У????????????????????????????????????????????????????????????????????????????????????
???????????????????????÷??????????????????????????????????????????Key??ID???????????????????????????л???????????
????????????????????????У?????????????????????????磬Google?????????IOS??Windows Phone7/8???????????????????????????Щ????????????????????????Щ?????????Google???????????????????Щ????????????????????????????????????????????????
???????????????????????????????????????????????????????????????????????????Android???????????
???????iOS?????????
????Apple?IOS??????????????????????????????Apple??????????????????????APNS??Apple Push Notification Service?????????????????????????????豸??IPhone??IPad????????APNS??????????????????????豸????????????????APNS?????????????????????????????????????????????Provider???в?????????Provider??????????APNS??????APNS????????????????豸????????????????Provider?????????Provider??????????APNS????????APNS???????????豸????????????????1?????

????????????????????豸??????????????У?????????????????????device token??????????APNS???????????ó??????????IOS???????????????????????????豸?й??device token??IOS??????devicetoken??????APNS??????device token?????APNS???????????е?IOS?豸?????????????????????????????????????????????AppleStore????????????????????????????????????????APNS?????????ó????????devicetoken????ó????????devicetoken?????APNS??????????????????????????????????device token????????????????Provider????????????ó?????????????????APNS???????????????Provider??????????????????Provider??????????APNS??????????APNS???????????????ó?????????????????????????????????2?????????????????????????????????????????????????????????????

????????Windows Phone?????????
????????Window Phone?????????????IOS????????????????????????????????Cloud Service??????????豸??ID?????Uri????Window Phone???????Push Client Service??PCS?????????????????????ó????????Push Client Service??????????Window Phone???????????裬??????????3????????????????
??????1??????ó??????Push Client Service???????Push Notification URI???????
??????2??????????Window Phone?豸???????????????????Push Client Service???MPNS??Microsoft Push Notification Service ??????????????????Push Notification URI???????????ó????????????????????????
??????3??????ó????????Push Notification URI?????????????????????Cloud Service?????????
??????4???????????????????Cloud Service??????????MPNS?????MPNS??????????Push Client Service??????Push Client Service????????????ó?????????????