How to get query and get data from FeebackService about apns4erl HOT 6 CLOSED

when the connection is done to the feedback service, you'll receive those tokens, expired tokens, and you are responsible to remove them from your database (if you consider the token is not valid anymore).

The callback where you'll receive this is described here:

https://github.com/inaka/apns4erl#feedback-channel-and-getting-errors

handle_apns_delete_subscription({Timestamp, Token}) here you'll receive one by one all of those expired tokens.

from apns4erl.

Clarifications needed please:

There are two ways we can get feedback

1. When we send_message(INVALID_DEVICE_TOKEN), here we get a feedback that token is not valid
2. As you mentioned above in your comment, when we open the connection to feedback service we start getting those tokens one by one

• In both cases wiil it be the same callback or will it be different callbacks?
• Do both cases share the same connection to the feedback service?
• I notice that feedback connection gets disconnected. What will happen if feedback connection is disconnected and I send_message for invalid device token. Since feedback connection was down, how will the feedback callback be invoked?

Best Regards,

from apns4erl.

Of course not. If you see the link above, you realize there're 2 callbacks. I was referring only to the second one, because you was asking about that, but you can implement both to handle the different incoming messages.

from apns4erl.

I apologize but after looking at the link only, I got confused.

How many total callbacks will be implemented - Two or Three

1. handle_apns_error/2 ------- used FOR send_message(...) for ERRORS

2. handle_apns_delete_subscription/1 --------> used FOR send_message(....) for DELETE_SUBSCR

3. handle_apns_delete_subscription/1 ------------> used BY feedback_connection for DELETE_SUBSCR

If two in total need to be implemented, then what will happen for send_message(DELETE_SUBSCR) call when Feedback Connection is NOT there

If three in total need to be implemented, my confusion is how do I provide reference to the third callback function.

Here we only give reference to two callback functions, one of which is for ERRORS

apns:connect(
%% your connection identifier:
my_connection_name,
%% called in case of a "hard" error:
fun ?MODULE:handle_apns_error/2,
%% called if the device uninstalled the application:
fun ?MODULE:handle_apns_delete_subscription/1
).

I think my confusion comes from that I assume for send_message(DELETE_SUBSCR) call, Feedback (different from error) will be sent right away by Apple APNS to apns4erl.

But I think the behavior would be that feedback of expired tokens token will only come when feedback connection is up next time. Is that the case?

from apns4erl.

yes, is that.

from apns4erl.

Thank you very much for helping me out!!!

from apns4erl.