Retry is a container which executes a single nested task until either: there is no failure; or: its retrycount has been exceeded. If this happens a BuildException is thrown. Since Apache Ant 1.7.1
| Attribute | Description | Required | 
| retrycount | number of times to attempt to execute the nested task | Yes | 
| retrydelay | number of milliseconds to wait between retry attempts task. Since Apache Ant 1.8.3 | No, defaults to no delay | 
Any valid Ant task may be embedded within the retry task.
<retry retrycount="3">
  <get src="http://www.unreliable-server.com/unreliable.tar.gz" 
       dest="/home/retry/unreliable.tar.gz" />
</retry>
This example shows how to use <retry> to wrap a task which must interact with an unreliable network resource.