check(exchange == null) { "Timeouts can't be adjusted in a network interceptor" }

    return copy(connectTimeoutMillis = checkDuration("connectTimeout", timeout.toLong(), unit))
  }

  override fun readTimeoutMillis(): Int = readTimeoutMillis

  override fun withReadTimeout(
    timeout: Int,
    unit: TimeUnit,
  ): Interceptor.Chain {
    check(exchange == null) { "Timeouts can't be adjusted in a network interceptor" }

import okhttp3.internal.commonParse
import okhttp3.internal.commonToString

/**
 * A Cache-Control header with cache directives from a server or client. These directives set policy
 * on what responses can be stored, and which requests can be satisfied by those stored responses.
 *
 * See [RFC 7234, 5.2](https://tools.ietf.org/html/rfc7234#section-5.2).
 */
class CacheControl internal constructor(
  /**

Some requests will have a cached response. When this cached response isn’t fresh, OkHttp can do a _conditional GET_ to download an updated response if it’s newer than what’s cached. This requires headers like `If-Modified-Since` and `If-None-Match` to be added.

## Rewriting Responses

Debug Logging
=============

OkHttp has internal APIs to enable debug logging. It uses the `java.util.logging` API which can be
tricky to configure. As a shortcut, you can paste [OkHttpDebugLogging.kt]. Then enable debug logging
for whichever features you need:

```
OkHttpDebugLogging.enableHttp2()
OkHttpDebugLogging.enableTaskRunner()
```

### Activating on Android

```
$ adb shell setprop log.tag.okhttp.Http2 DEBUG

      Request.Builder()
        .url(server.url("/"))
        .build()
    val response = client.newCall(request).execute()
    assertThat("b").isEqualTo(response.body.string())
  }

  /** Make sure interceptors can interact with the OkHttp client.  */
  @Test
  fun interceptorMakesAnUnrelatedRequest() {
    server.enqueue(MockResponse.Builder().body("a").build()) // Fetched by interceptor.

expect our code of conduct to be honored.

Square’s open source community strives to:

 * **Be open**: We invite anyone to participate in any aspect of our projects. Our community is
   open, and any responsibility can be carried by a contributor who demonstrates the required
   capacity and competence.

 * **Be considerate**: People use our work, and we depend on the work of others. Consider users and

 * body.
 *
 * ### The response body can be consumed only once.
 *
 * This class may be used to stream very large responses. For example, it is possible to use this
 * class to read a response that is larger than the entire memory allocated to the current process.
 * It can even stream a response larger than the total storage on the current device, which is a

    open fun method(
      method: String,
      body: RequestBody?,
    ): Builder = commonMethod(method, body)

    /**
     * Attaches [tag] to the request using [T] as a key. Tags can be read from a request using
     * [Request.tag]. Use null to remove any existing tag assigned for [T].
     *
     * Use this API to attach timing, debugging, or other application data to a request so that

 * They don't specify whether a specific proxy server should be used or how to authenticate with that proxy server.

 * test what OkHttp does when both are reachable, or if only one is reachable.
 *
 * This test only runs on host machines that have both IPv4 and IPv6 addresses for localhost.
 */
@Timeout(30)
class FastFallbackTest {
  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  // Don't use JUnit 5 test rules for these; otherwise we can't bind them to a single local IP.