使用CocoaHttpServer或iPhone上的任何http服务器上传多个文件

I used cocoaHttpserver for transferring content to iPhone in my application. But it just provides single file upload. But I saw applications which provide multiple uploads such as dropbox, mydocs. During googling i found that they are using kinda swf to perform multiple uploads. So can anyone guide me to do multiple uploads for iPhone using any existing http server or to modify cocoaHttpserver for the same. I am very new to server side programming and I have to implement multiple file uploading scheme for iPhone where iPhone would be acting as a http server.I used cocoaHttpserver for transferring content