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-Project Name
--------------------------------------------------------------------------------
-Version 0.6
-Release date: 01/31/2008
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-Project state:
-experimental
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-Credits
- James Burke (jburke@dojotoolkit.org)
--------------------------------------------------------------------------------
-Project description
-
-The XHR IFrame Proxy (xip) allows you to do cross-domain XMLHttpRequests (XHRs).
-It works by using two iframes, one your domain (xip_client.html), one on the
-other domain (xip_server.html). They use fragment IDs in the iframe URLs to pass
-messages to each other. The xip.js file defines dojox.io.proxy.xip. This module
-intercepts XHR calls made by the Dojo XHR methods (dojo.xhr* methods). The module
-returns a facade object that acts like an XHR object. Once send is called on the
-facade, the facade's data is serialized, given to xip_client.html. xip_client.html
-then passes the serialized data to xip_server.html by changing xip_server.html's
-URL fragment ID (the #xxxx part of an URL). xip_server.html deserializes the
-message fragments, and does an XHR call, gets the response, and serializes the
-data. The serialized data is then passed back to xip_client.html by changing
-xip_client.html's fragment ID. Then the response is deserialized and used as
-the response inside the facade XHR object that was created by dojox.io.proxy.xip.
--------------------------------------------------------------------------------
-Dependencies:
-
-xip.js: Dojo Core, dojox.data.dom
-xip_client.html: none
-xip_server.html: none (but see Additional Notes section)
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-Documentation
-
-There is some documentation that applies to the Dojo 0.4.x version of these files:
-http://dojotoolkit.org/book/dojo-book-0-4/part-5-connecting-pieces/i-o/cross-domain-xmlhttprequest-using-iframe-proxy
-
-The general theory still applies to this code, but the specifics are different
-for the Dojo 0.9+ codebase. Doc updates hopefully after the basic code is ported.
-
-The current implementation destroys the iframes used for a request after the request
-completes. This seems to cause a memory leak, particularly in IE. So, it is not
-suited for doing polling cross-domain requests.
--------------------------------------------------------------------------------
-Installation instructions
-
-Grab the following from the Dojox SVN Repository:
-http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/io/proxy/xip.js
-http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/io/proxy/xip_client.html
-
-Install into the following directory structure:
-/dojox/io/proxy/
-
-...which should be at the same level as your Dojo checkout.
-
-Grab the following from the Dojox SVN Repository:
-http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/io/proxy/xip_server.html
-
-and install it on the domain that you want to allow receiving cross-domain
-requests. Be sure to read the documentation, the Additional Notes below, and
-the in-file comments.
--------------------------------------------------------------------------------
-Additional Notes
-
-xip_client.html and xip_server.html do not work right away. You need to uncomment
-out the script tags in the files. Additionally, xip_server.html requires a JS file,
-isAllowed.js, to be defined. See the notes in xip_server.html for more informaiton.
-
-XDOMAIN BUILD INSTRUCTIONS:
-The dojox.io.proxy module requires some setup to use with an xdomain build.
-The xip_client.html file has to be served from the same domain as your web page.
-It cannot be served from the domain that has the xdomain build. Download xip_client.html
-and install it on your server. Then set djConfig.xipClientUrl to the local path
-of xip_client.html (just use a path, not a whole URL, since it will be on the same
-domain as the page). The path to the file should be the path relative to the web
-page that is using dojox.io.proxy.
-
-
-
-