alex-several-questions | Stripe Developers | Page 1

grave dock May 23, 2022, 1:45 PM

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Hey @full lagoon! We're happy to help. Let's just keep all questions to this thread it's fine if you change topics 🙂

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We don't have a limit to the number of domains so you're all fine to add them all

full lagoon May 23, 2022, 1:45 PM

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ok thanks

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the other question is regarding the bluetooth terminal integration with android/ios sdk

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I've observed that the very first update to the bluetooth terminal takes a lot of time

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(wisepad 3 model)

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in the phone I've been testing this on, the connection was always cut unless I kept the device awake myself

grave dock May 23, 2022, 1:47 PM

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can you say a bit more about what you see/experience?

full lagoon May 23, 2022, 1:47 PM

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is it recommended to keep the device awake while the terminal updates?

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or during the whole terminal operation let's say

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what I experience is the connection with the terminal being cut every time I was waiting for the very first bluetooth update, which really took a lot of time. It seems like, as soon as my phone screen went off, the terminal got disconnected

grave dock May 23, 2022, 1:50 PM

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gotcha, yeah I think that's expected but let me ask my team if there's a way to avoid that easily

full lagoon May 23, 2022, 1:51 PM

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so, is it recommended that I use one of the techniques in here https://developer.android.com/training/scheduling/wakelock to keep my app awake during terminal operation?

grave dock May 23, 2022, 1:52 PM

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yes it's likely the right approach. I'm asking my team so I'll let you know in a bit once they reply if they have a recommendation
Do you have other questions in the meantime?

full lagoon May 23, 2022, 1:52 PM

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yes thanks, I have more questions also related to the bluetooth terminal updates

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what is the frequency of updates we can expect?

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(both mandatory/optional)

grave dock May 23, 2022, 1:53 PM

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We don't really have a set frequency, it really depends on what we need to change/fix.

full lagoon May 23, 2022, 1:53 PM

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we are trying to minimize the likelihood that this will impact our customers in the middle of a payment with a final client let's say

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but could you more o less give me a figure of what this has been like lately?

grave dock May 23, 2022, 1:55 PM

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https://stripe.com/docs/terminal/readers/bbpos-wisepos-e#stripe-reader-software

This ensures that updates happen at midnight (in the timezone of the assigned location) to avoid interruption to sales
We do this to avoid disruption. But with BT readers if you don't keep them connected then you only know on the next reboot

full lagoon May 23, 2022, 1:56 PM

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the thing is that with bt readers, they update upon connecting afaik

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so we would have to program discovery and connection every once and then, and that is only assuming that the reader is within range etc

grave dock May 23, 2022, 1:57 PM

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ah yes you're right I was deep on the wrong doc. Let me see if we have a more specific changelog that could show the recent frequency

full lagoon May 23, 2022, 1:58 PM

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also about bt updates, I see you have optional as well as mandatory updates, does every mandatory update start off like a optional update?

grave dock May 23, 2022, 1:58 PM

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https://stripe.com/docs/terminal/readers/bbpos-chipper2xbt#firmware-versions you can see some of the update frequency on that page

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we split firmware and reader update too

full lagoon May 23, 2022, 1:58 PM

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and then, if not accepted, it becomes mandatory

grave dock May 23, 2022, 1:58 PM

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And no it's not always optional. It's more for security fixes and related so they get released and become required

full lagoon May 23, 2022, 1:59 PM

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ok makes sense

grave dock May 23, 2022, 1:59 PM

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So if you use the M2 you can see we haven't made many updates https://stripe.com/docs/terminal/readers/stripe-m2

full lagoon May 23, 2022, 1:59 PM

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I see we can expect one every 1/2 months, not that bad

grave dock May 23, 2022, 2:00 PM

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yeah though it's always possible you'd get 2 updates the same week, but we aim to avoid that if we can

full lagoon May 23, 2022, 2:01 PM

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ok, thank you very much, nothing more on my side, just waiting now for your answer on keeping the app awake

grave dock May 23, 2022, 2:01 PM

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sounds good

full lagoon May 23, 2022, 2:04 PM

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well, now that I'm here, my colleague from product has been waiting to be given documentation about EU SEPA transfers, which we just joined the beta, but all we have so far is https://stripe.com/docs/payments/bank-transfers/accept-a-payment which seems very specifically about Japan

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don't you have something specific to SEPA transfers?

grave dock May 23, 2022, 2:06 PM

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we don't really discuss betas in public since they are secret/private. But the API is quite similar to the Japan one. Not sure if we have specific docs for the EU version but they should ask their contact at Stripe who gave them access!

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Okay so for iOS they recommended looking into this: https://developer.apple.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingForIOSApps/PerformingTasksWhileYourAppIsInTheBackground.html#:~:text=Class Reference.-,Core Bluetooth Background Execution Modes,-If your app
https://stackoverflow.com/questions/53299770/ios-ble-device-paired-while-app-is-in-background-or-killed-or-suspend

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And for Android, likely https://stackoverflow.com/questions/46109365/how-to-keep-ble-android-application-running-in-background and https://developer.android.com/guide/components/services#:~:text=types of services%3A-,Foreground,-A foreground service

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https://punchthrough.com/android-ble-guide/ is another guide they recommended

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@full lagoon Let me know if that answers your question!

full lagoon May 23, 2022, 2:22 PM

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let me see

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yes that should be enough

#alex-several-questions