// Masks are only a concern for server writers.
  private val maskKey: ByteArray? = if (isClient) null else ByteArray(4)
  private val maskCursor: Buffer.UnsafeCursor? = if (isClient) null else Buffer.UnsafeCursor()

  interface FrameCallback {
    @Throws(IOException::class)
    fun onReadMessage(text: String)

    @Throws(IOException::class)
    fun onReadMessage(bytes: ByteString)

    fun onReadPing(payload: ByteString)

## ASGI Servers

Let's go a little deeper into the details.

FastAPI uses a standard for building Python web frameworks and servers called <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr>. FastAPI is an ASGI web framework.

	// Do not send if the connection is not active.
	_, err := target.isActive()
	if err != nil {
		return err
	}

	return target.send(eventData)
}

// Close - does nothing and available for interface compatibility.
func (target *MQTTTarget) Close() error {
	if target.client != nil {
		target.client.Disconnect(100)
	}
	close(target.quitCh)
	return nil
}

func (target *MQTTTarget) init() error {

	"istio.io/istio/istioctl/pkg/util/handlers"
	"istio.io/istio/pkg/cluster"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/maps"
	"istio.io/istio/pkg/ptr"
	"istio.io/istio/pkg/slices"
)

type Context interface {
	// CLIClient returns a client for the default revision
	CLIClient() (kube.CLIClient, error)
	// CLIClientWithRevision returns a client for the given revision
	CLIClientWithRevision(rev string) (kube.CLIClient, error)

   */
  open fun callFailed(
    call: Call,
    ioe: IOException,
  ) {
  }

  /**
   * Invoked when a call is canceled.
   *
   * Like all methods in this interface, this is invoked on the thread that triggered the event. But
   * while other events occur sequentially; cancels may occur concurrently with other events. For

    public E getNext() {
      return null;
    }
  }

  /** Marker interface for {@link InternalEntry} implementations for strong values. */
  interface StrongValueEntry<K, V, E extends InternalEntry<K, V, E>>
      extends InternalEntry<K, V, E> {}

  /** Marker interface for {@link InternalEntry} implementations for weak values. */
  interface WeakValueEntry<K, V, E extends InternalEntry<K, V, E>> extends InternalEntry<K, V, E> {

import org.checkerframework.checker.nullness.qual.Nullable;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * Abstract base class for testing implementations of {@link Network} interface. Network instances
 * created for testing should have Integer node and String edge objects.
 *
 * <p>Test cases that should be handled similarly in any graph implementation are included in this

        this.addressCache.put(this.unknownName, new CacheEntry(this.unknownName, this.unknownAddress, SmbConstants.FOREVER));

        /*
         * Determine the InetAddress of the local interface
         * if one was not specified.
         */
        InetAddress localInetAddress = tc.getConfig().getNetbiosLocalAddress();
        if ( localInetAddress == null ) {
            try {

 *
 * TODO: add request trace so that requests can be linked together and through the resolver
 * TODO: add a Request interface holding session + parent request
 *
 * @since 4.0.0
 */
@Experimental
@ThreadSafe
public interface Session {

    /**
     * Retrieves the settings for the current session.
     *
     * @return the settings instance
     */
    @Nonnull

/**
 * Request used to build a {@link org.apache.maven.api.Project} using
 * the {@link ProjectBuilder} service.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ModelBuilderRequest {

    /**
     * The possible request types for building a model.
     */
    enum RequestType {
        /**