Choosing between application and network interceptors

Each interceptor chain has relative merits.

Application interceptors

• Don't need to worry about intermediate responses like redirects and retries.

• Are always invoked once, even if the HTTP response is served from the cache.

• Observe the application's original intent. Unconcerned with OkHttp-injected headers like If-None-Match.

• Permitted to short-circuit and not call Chain.proceed().

• Permitted to retry and make multiple calls to Chain.proceed().

Network Interceptors

• Able to operate on intermediate responses like redirects and retries.

• Not invoked for cached responses that short-circuit the network.

• Observe the data just as it will be transmitted over the network.

• Access to the Connection that carries the request.

理解的不是很透彻，希望大神解答