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[HTML5 Boilerplate homepage](http://html5boilerplate.com) | [Documentation |
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table of contents](README.md) |
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# crossdomain.xml |
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A cross-domain policy file is an XML document that grants a web client—such as |
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Adobe Flash Player, Adobe Reader, etc., permission to handle data across |
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multiple domains. When a client hosts content from a particular source domain |
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and that content makes requests directed towards a domain other than its own, |
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the remote domain would need to host a cross-domain policy file that grants |
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access to the source domain, allowing the client to continue with the |
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transaction. Policy files grant read access to data, permit a client to include |
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custom headers in cross-domain requests, and are also used with sockets to |
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grant permissions for socket-based connections. |
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For full details, check out Adobe's article about the [cross-domain policy file |
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specification](http://www.adobe.com/devnet/articles/crossdomain_policy_file_spec.html) |
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Read the [Cross-domain policy file |
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specification](http://learn.adobe.com/wiki/download/attachments/64389123/CrossDomain_PolicyFile_Specification.pdf?version=1) |
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- (PDF, 129 KB) |
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