////
   Licensed to the Apache Software Foundation (ASF) under one
   or more contributor license agreements.  See the NOTICE file
   distributed with this work for additional information
   regarding copyright ownership.  The ASF licenses this file
   to you under the Apache License, Version 2.0 (the
   "License"); you may not use this file except in compliance
   with the License.  You may obtain a copy of the License at

     https://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing,
   software distributed under the License is distributed on an
   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   KIND, either express or implied.  See the License for the
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////

Ivy is sending HTTP headers when downloading files.
The `User-Agent` HTTP header can be controlled using a
[source]
----
http.agent
----

system property.
When this system property is not set, the default value for the User-Agent header is "Apache Ivy/__Ivy-version__"
where __Ivy-version__ is replaced by the currently running version of Ivy.