Chopper (Retrofit for Flutter) - #2 Interceptors - Dart HTTP Client Generator Tutorial
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Having conquered the basics of Chopper, such as making HTTP requests, in the previous part, it's time to take a detailed look at interceptors. They are a bit more high-level components of Chopper and they are used to perform some actions right before sending out a request, or right after receiving a response.
The nature of interceptors is that they run with every request or response performed on a ChopperClient. If you want to perform a client-wide operation, interceptors are just the right thing to employ.
Do you want to keep a statistic of how many times a certain URL has been called? Do you want to add headers to every request? Do you want to tell the user to switch to WiFi when he's about to download a large file? All of this is a job for an interceptor.
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