CacheTest.kt

import okhttp3.Cache
import okhttp3.OkHttpClient
import okhttp3.Request
import org.junit.Test
import java.io.File

class CacheTest {
    @Test
    fun test() {
        val directory = File("./cache")
        directory.deleteRecursively()
        val client = OkHttpClient.Builder()
            .cache(Cache(directory, 1024 * 1024))
            .addNetworkInterceptor { chain ->
                println("----------- intercept netw ------------")
                val request = chain.request()
                println(request.headers)
                chain.proceed(request).also {
                    println(it.request.headers)
                    println("-----------------------")
                }
            }
            .addInterceptor { chain ->
                println("----------- intercept ------------")
                val request = chain.request()
                println(request.headers)
                chain.proceed(request).also {
                    println(it.request.headers)
                    println("-----------------------")
                }
            }
            .build()
        val request =
            Request.Builder().url("https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js").build()

        client.newCall(request).execute().use {
            println(it.request.headers)
            println("-----------------")
            println(it.networkResponse?.request?.headers)
            println("-----------------")
            println(it.networkResponse?.headers)
            println("-----------------")
            println(it.networkResponse)
        }
        println("=====================")
        val request1 =
            Request.Builder().url("https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js").build()
        client.newCall(request1).execute().use {
            println(it.request.headers)
            println("-----------------")
            println(it.networkResponse?.request?.headers)
            println("-----------------")
            println(it.networkResponse?.headers)
            println("-----------------")
            println(it.networkResponse)
        }
    }
}