We have one system base on Google App Engine and want to create new app. This app help user save contact easily by one click to button on our website. (Like this site http://iphone.mobicontact.info/ --> Browse on iOS and touch to "Download contact to Iphone")
According to http://mobicontact.info/iphone/download-contact-from-web-page/ we must use ics file (Calendar) contain vcf file (Contact) to do our business. By the way, we create a servlet for generate ics file (without vcf file) and it's not working properly. (I think in ics file content was had vcf file. In addition, I can't create file on GAE server, Does Google App Engine allow creation of files and folders on the server? ).
Anybody can help me and show me how to create iOS contact file from GAE system? Thank you so much!