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build/apache-ant-1.10.4/manual/Tasks/retry.html

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+<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
+<title>Retry Task</title>
+</head>
+<body>
+<h2>Retry</h2>
+<p><em>Since Apache Ant 1.7.1</em></p>
+<h3>Description</h3>
+<p><code>Retry</code> is a container which executes a single nested task until either: there is no
+failure; or: its <var>retrycount</var> has been exceeded. If this happens
+a <code>BuildException</code> is thrown.</p>
+
+<h3>Parameters</h3>
+<table class="attr">
+  <tr>
+    <th scope="col">Attribute</th>
+    <th scope="col">Description</th>
+    <th scope="col">Required</th>
+  </tr>
+  <tr>
+    <td>retrycount</td>
+    <td>number of times to attempt to execute the nested task</td>
+    <td>Yes</td>
+  </tr>
+  <tr>
+    <td>retrydelay</td>
+    <td>number of milliseconds to wait between retry attempts task. <em>Since Apache Ant
+    1.8.3</em></td>
+    <td>No; defaults to no delay</td>
+  </tr>
+</table>
+<p>Any valid Ant task may be embedded within the retry task.</p>
+
+<h3>Example</h3>
+<p>This example shows how to use <code>&lt;retry&gt;</code> to wrap a task which must interact with
+an unreliable network resource.</p>
+<pre>
+&lt;retry retrycount="3"&gt;
+  &lt;get src="http://www.unreliable-server.com/unreliable.tar.gz"
+       dest="/home/retry/unreliable.tar.gz"/&gt;
+&lt;/retry&gt;</pre>
+</body>
+</html>