ServiceStack/ServiceStack — pull request #79 by greghroberts (2012-01-27 06:39:50+00:00)
Title: Added Support for Stream to PostFile instead of just FileInfo

...This is to support times when you are creating files in memory or other scenarios when the content doesn't exist on disk and would be slow to write to disk then call. We have some file upload services that need to be really efficient and sometimes these files are loaded/modified or zipped in memory then sent. Persisting to disk first is inefficient.
Wasn't happy that I needed to modify the interface, but not sure what the recommended way would be.