CODEWITHSUNDEEP
iphoneiosobjective-cnetwork-programmingnsurlconnection
openfrog
openfrog

Reputation: 40755

How to verify the integrity of a downloaded file?

StoreKit has a bug that can lead to incomplete downloads being marked as "Finished".

I have seen some apps that download large files after In-App Purchases do an integrity check on them. How is this done?

Upvotes: 1

Views: 1533

Answers (1)

Rui Peres
Rui Peres

Reputation: 25917

Something I do in my own app is to pass a JSON with a list of resources will be downloading. Beside passing the URL of the resource, I also pass the checksum of it. After the download for a given file I compared the checksum I have from the JSON with the checksum of the file itself. You can use something like this.

Upvotes: 1

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