I am working on an Office 365 (SharePoint Online) website, and I am looking for a way to retrieve data (xml, json) from remote sites that don't necessarily support JSON-P or CORS.
I could use an XML Web Part if the remote address was static, but in my case it includes parameters. For example I need to use the USPS address verification service, where the address is passed as a parameter.
I found on the Web a couple solutions (for example from John Chapman for SharePoint 2010) that implement a proxy page. However these examples require server side installation.
Is there a way to obtain a similar result on Office 365? If not, any other suggestion on how to retrieve remote xml or json?