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StunFailureEvent.java
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StunFailureEvent.java
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/*
* ice4j, the OpenSource Java Solution for NAT and Firewall Traversal.
* Maintained by the SIP Communicator community (http://sip-communicator.org).
*
* Distributable under LGPL license. See terms of license at gnu.org.
*/
package org.ice4j;
import org.ice4j.message.*;
import org.ice4j.stack.*;
/**
* The class is used to dispatch events that occur when a STUN transaction
* fails asynchronously for reasons like a port unreachable exception for
* example.
*
* @author Emil Ivov
*/
public class StunFailureEvent
extends BaseStunMessageEvent
{
/**
* Serial version UID for this Serializable class.
*/
private static final long serialVersionUID = 41232541L;
/**
* The <tt>Exception</tt> that caused this failure.
*/
private final Throwable cause;
/**
* Constructs a <tt>StunFailureEvent</tt> according to the specified
* message.
*
* @param stunStack the <tt>StunStack</tt> to be associated with the new
* instance
* @param message the message itself
* @param localAddress the local address that the message was sent from.
* @param cause the <tt>Exception</tt> that caused this failure or
* <tt>null</tt> if there's no <tt>Exception</tt> associated with this
* failure
*/
public StunFailureEvent(
StunStack stunStack,
Message message,
TransportAddress localAddress,
Throwable cause)
{
super(stunStack, localAddress, message);
this.cause = cause;
}
/**
* Returns the <tt>TransportAddress</tt> that the message was supposed to
* leave from.
*
* @return the <tt>TransportAddress</tt> that the message was supposed to
* leave from.
*/
public TransportAddress getLocalAddress()
{
return getSourceAddress();
}
/**
* Returns the <tt>Exception</tt> that cause this failure or <tt>null</tt>
* if the failure is not related to an <tt>Exception</tt>.
*
* @return the <tt>Exception</tt> that cause this failure or <tt>null</tt>
* if the failure is not related to an <tt>Exception</tt>.
*/
public Throwable getCause()
{
return cause;
}
/**
* Returns a <tt>String</tt> representation of this event, containing the
* corresponding message, and local address.
*
* @return a <tt>String</tt> representation of this event, containing the
* corresponding message, and local address.
*/
@Override
public String toString()
{
StringBuffer buff = new StringBuffer("StunFailureEvent:\n\tMessage=");
buff.append(getMessage());
buff.append(" localAddr=").append(getLocalAddress());
return buff.toString();
}
}