A sample ASP.NET implentation of Flow.js server side with NgFlow
To install, make sure NuGet package restore is enabled for the solution.
Launch the projec tand navigate to /index.html for the NgFlow sample Angular app. Uploads will be saved in App_Data/Tmp/FileUploads
Uploads will be written Directly to the output file with no temporary files or re-assembling of file chunks.
The Upload WebApi2 Controller is what handles the Flow.js upload. It uses the FlowUploadProcessor in /Services to conduct the upload. The class is thread safe and has been tested with 4 simultaneous uploads with multiple threads, and implements the GET Testing of individual chunks.
The important part of this implementation is the custom FlowMultiplartFormDataStreamProvider.cs that handles the actual streaming of files to disk. When it gets to the file part of the HTTP Body it retrieves the FlowMetaData from the previous content and uses that data to save the chunk to the appropriate file.