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## org.fourthline.cling.protocol
Class ReceivingAsync<M extends UpnpMessage>

    java.lang.Object
      org.fourthline.cling.protocol.ReceivingAsync<M>

Type Parameters:
  `M` - The type of UPnP message handled by this protocol.

All Implemented Interfaces:
  Runnable

Direct Known Subclasses:
  ReceivingNotification, ReceivingSearch, ReceivingSearchResponse, ReceivingSync

    public abstract class ReceivingAsync<M extends UpnpMessage>

extends Object
implements Runnable

Supertype for all asynchronously executing protocols, handling reception of UPnP messages.

After instantiation by the `ProtocolFactory`, this protocol `run()`s and calls its own `waitBeforeExecution()` method. By default, the protocol does not wait before then proceeding with `execute()`.

Author:
  Christian Bauer

Constructor Summary
`protected` | `ReceivingAsync(UpnpService upnpService, M inputMessage)`

Method Summary
`protected abstract void` | `execute()`
`protected
`<H extends UpnpHeader> H`
` | `getFirstHeader(UpnpHeader.Type headerType, Class<H> subtype)`
`M` | `getInputMessage()`
`UpnpService` | `getUpnpService()`
`void` | `run()`
`String` | `toString()`
`protected boolean` | `waitBeforeExecution()` Provides an opportunity to pause before executing the protocol.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### ReceivingAsync

    protected ReceivingAsync(UpnpService upnpService,
                             M inputMessage)

Method Detail

### getUpnpService

    public UpnpService getUpnpService()

### getInputMessage

    public M getInputMessage()

### run

    public void run()

  Specified by:
    `run` in interface `Runnable`

### waitBeforeExecution

    protected boolean waitBeforeExecution()
                                   throws InterruptedException

  Provides an opportunity to pause before executing the protocol.

  Returns:
    `true` (default) if execution should continue after waiting.
  Throws:
    `InterruptedException` - If waiting has been interrupted, which also stops execution.

### execute

    protected abstract void execute()

### getFirstHeader

    protected <H extends UpnpHeader> H getFirstHeader(UpnpHeader.Type headerType,
                                                      Class<H> subtype)

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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