Mime-Type are used to provide identifiers for file formats on the Internet.

By default, XAP files are not recognized as a Silverlight application in Tomcat or IIS 5.1. You can set a Mime-Type to identify XAP files on both servers.

Setting Mime-Type in Tomcat

in %TOMCAT_INSTALL%/conf directory, edit web.xml file. Add the following description to identify XAP files

<mime-mapping>

    <extension>xap</extension>

    <mime-type>application/x-silverlight-2-b2</mime-type>

</mime-mapping>

• Restart Tomcat and clear your navigator cache,
• get a XAP file to ensure that the Mime-Type is correctly set

Setting Mime-Type in IIS 5.1

• Open the IIS Management Console
• Open your Web Site properties, under HTTP Headers click on File Types button

• In the File Types window, click New Type to add a new Mime-Type

• Get a XAP file within IIS to ensure that the Mime-Type is correctly set

- Ronny Kwon