AckMcastReceiverWindow

java.lang.Object
- org.jgroups.stack.AckMcastReceiverWindow

```
public class AckMcastReceiverWindow
extends java.lang.Object
```
Keeps track of messages received from various senders. Acks each message received and checks whether it was already delivered. If yes, the message is discarded, otherwise it is delivered (passed up). The messages contain sequence numbers of old messages to be deleted, those are removed from the message table.

Author:

Bela Ban June 17 1999

Field Summary

Fields
Modifier and Type Field Description

protected static org.apache.commons.logging.Log log

Constructor Summary

Constructors
Constructor Description

AckMcastReceiverWindow()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`add(java.lang.Object sender, long seqno)`	Records the sender/seqno pair in the message table
`static void`	`main(java.lang.String[] args)`
`void`	`remove(java.lang.Object sender, java.util.Vector seqnos)`
`void`	`removeAll()`
`void`	`reset()`
`long`	`size()`
`void`	`suspect(java.lang.Object sender)`
`java.lang.String`	`toString()`

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

Field Detail

log

protected static final org.apache.commons.logging.Log log

Constructor Detail
- AckMcastReceiverWindow
```
public AckMcastReceiverWindow()
```

Method Detail

add
```
public boolean add(java.lang.Object sender,
                   long seqno)
```
Records the sender/seqno pair in the message table

Parameters:

sender - The sender of the message

seqno - The sequence number associated with the message

Returns:

boolean If false, message is already present. Otherwise true.

remove

public void remove(java.lang.Object sender,
                   java.util.Vector seqnos)

size
```
public long size()
```

reset
```
public void reset()
```

removeAll
```
public void removeAll()
```

suspect

public void suspect(java.lang.Object sender)

toString
```
public java.lang.String toString()
```
Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] args)
                 throws java.net.UnknownHostException

Throws:: java.net.UnknownHostException