Class com.micronova.util.HTTPPacketListener

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Class com.micronova.util.HTTPPacketListener

java.lang.Object
   |
   +----com.micronova.util.HTTPPacketListener

public class HTTPPacketListener
extends Object
implements Runnable

HTTPPacketListener is a thread Runnable for listening to an HTTP connection for incoming stream of Codables. When run, it first makes a connection to the given url, and sends the given parameter. Then whenever a Codable is received or an exception occurs, it asynchronously posts a message addressed to the given target in the application's queue.

The target's performCommand(command, object) is called as follows:

for a received data, command = HTTPPacketListener.DATA, object = the received Codable;
for an exception, command = HTTPPacketListener.EXCEPTION, object = the Exception object.

Version:: 1.0
Author:: Makoto Nagata, MicroNova

application: Application that provides a message queue.
DATA: command sent when a packet is received.
EXCEPTION: command sent when an exception occurs.
isRunning: set to false to abort listening.
parameter: Codable parameter to be sent to the URL before listening starts.
target: Target that receives messages.
url: URL to listen to.

HTTPPacketListener(URL, Codable, Application, Target): Constructs an HTTPPacketListener.

abort(): Aborts listening.
run()

application

  protected Application application

Application that provides a message queue.

target

  protected Target target

Target that receives messages.

url

  protected URL url

URL to listen to.

parameter

  protected Codable parameter

Codable parameter to be sent to the URL before listening starts.

isRunning

  protected boolean isRunning

set to false to abort listening.

DATA

  public final static String DATA

command sent when a packet is received.

EXCEPTION

  public final static String EXCEPTION

command sent when an exception occurs.

HTTPPacketListener

  public HTTPPacketListener(URL url,
                            Codable parameter,
                            Application application,
                            Target target)

Constructs an HTTPPacketListener.

Parameters:: url - a URL to listen to; parameter - a Codable that is sent to the URL before listening starts (can be null); application - an Application that supplies a message queue; target - a Target that receives messages

run

  public void run()

abort

  public void abort()

Aborts listening. The thread will exit.

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