In OkHttp we expose a blocking API over a framed protocol. This document explains the code and policy that makes that work.

### Threads

#### Application's calling thread

@GwtIncompatible
public interface RangeMap<K extends Comparable, V> {
  /*
   * TODO(cpovirk): These docs sometimes say "map" and sometimes say "range map." Pick one, or at
   * least decide on a policy for when to use which.
   */

  /**
   * Returns the value associated with the specified key, or {@code null} if there is no such value.
   *

public final class NullPointerTester {

  private final ClassToInstanceMap<Object> defaults = MutableClassToInstanceMap.create();
  private final List<Member> ignoredMembers = new ArrayList<>();

  private ExceptionTypePolicy policy = ExceptionTypePolicy.NPE_OR_UOE;

  /*
   * Requiring desugaring for guava-*testlib* is likely safe, at least for the reflection-based

- Adds FQDN addressType support for EndpointSlice. ([#84091](https://github.com/kubernetes/kubernetes/pull/84091), [@robscott](https://github.com/robscott))
- Fix incorrect network policy description suggesting that pods are isolated when a network policy has no rules of a given type ([#84194](https://github.com/kubernetes/kubernetes/pull/84194), [@jackkleeman](https://github.com/jackkleeman))

Violations of the Code of Conduct can occur in any setting, even those unrelated to the project. We will only consider complaints about conduct that has occurred within one year of the report.

 */
@GwtCompatible
public final class Queues {
  private Queues() {}

  // ArrayBlockingQueue

  /**
   * Creates an empty {@code ArrayBlockingQueue} with the given (fixed) capacity and nonfair access
   * policy.
   */
  @J2ktIncompatible
  @GwtIncompatible // ArrayBlockingQueue
  public static <E> ArrayBlockingQueue<E> newArrayBlockingQueue(int capacity) {
    return new ArrayBlockingQueue<>(capacity);
  }

- **Auth**
  - [alpha] Container Image Policy allows an access controller to determine whether a pod may be scheduled based on a policy ([docs](http://kubernetes.io/docs/admin/admission-controllers/#imagepolicywebhook)) ([kubernetes/features#59](https://github.com/kubernetes/enhancements/issues/59))

  - PodSecurityPolicy resources will no longer be served from `extensions/v1beta1` in v1.16. Migrate to the `policy/v1beta1` API, available since v1.10. Existing persisted data can be retrieved via the `policy/v1beta1` API.

}

public int getMaxChannels() {
    return getIntProperty(MAX_CHANNELS, 4);
}

public int getChannelBindingPolicy() {
    String policy = getProperty(CHANNEL_BINDING_POLICY, "preferred");
    switch (policy.toLowerCase()) {
        case "disabled": return 0;
        case "required": return 2;
        default: return 1;  // preferred
    }
}

authentication information from an image pull is not yet present, thus enforcing authentication / re-authentication. This means an image pull might be attempted even in cases where a pod requests the `IfNotPresent` image pull policy, and might lead to the pod not starting if its pull policy is `Never` and is unable to present authentication information that led to a previous successful pull of the image it is requesting. ([#128152](https://github.com/kubernetes/kubernetes/pull/128152), [@stlaz](https://github.com/stlaz))...