Handle an offerwall postback without paying twice
Signature check, unique constraint, credit inside a transaction. Networks retry postbacks, so the same completion will arrive more than once.
Tagged “postback”
2 entries
2 entries
Signature check, unique constraint, credit inside a transaction. Networks retry postbacks, so the same completion will arrive more than once.
Postback URLs, webhook targets and site verification all mean fetching an address someone else chose. This is the guarded version.