GoogleAppEngine:URL Fetch

Contents 1 Using the Google App Engine URL Fetch Service with Open BlueDragon CFML 1.1 Unsupported <cfhttp> tag attributes 1.2 Additional Limitations of the GAE URL Fetch Service 1.3 Examples

Using the Google App Engine URL Fetch Service with Open BlueDragon CFML

OpenBD's <cfhttp> implementation for GAE leverages the GAE URL Fetch Service.

Unsupported <cfhttp> tag attributes

The GAE URL Fetch Service imposes some limitations. The following <cfhttp> tag attributes are ignored by the GAE URL Fetch Service:

• proxyServer
• proxyPort
• proxyUser
• proxyPassword
• timeout

Additional Limitations of the GAE URL Fetch Service

Some specific limitiations include:

• 1Mb request/response limit
• Circular Redirects are not allowed
• non-stardard ports (except 8080 when running on the GAE Development server) are not allowed
• The "reason phrase" of the HTTP Response (as in "OK" from "200 OK") is not available
• The HTTP Version number of the HTTP Response is not available

A complete discussion of the URL Fetch Service and it's limitations can be found here: http://code.google.com/appengine/docs/java/urlfetch/overview.html

Examples

Working examples of the concepts described above may be found within the openbd_google branch of the OpenBD project. Specifically at this path: <module-root>\war\demo\gae\http\