I\'m currently working on an application for uploading large video files from the iPhone to a webservice through simple http post. As of right now, I build an NSURLRequest and p
One way to do this is to use an asynchronous NSInputStream in concert with a file. When the asynchronous connection asks you to provide more data, you read in the data from a file. You have a few ways to do this:
UNIX/BSD interface. use open (or fopen), malloc, read, and create a NSData object from the malloced data
use the above with mmap() if you know it
use the Foundation class NSFileHandle APIs to do more or less the same using ObjectiveC
You can read up on streams in the 'Stream Programming Guide'. If this doesn't work for you there are lots of open source projects that can upload files, for instance MKNetworkKit