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I have a scenario that I need to implement. Namely, my server needs to implement WCF that would accept large files (500MB - 1GB) and support resuming in case the connection drops for any reason. I was thinking of using WCF streaming for this, but I was wondering if resuming is somehow supported out of the box or do I need to implement custom handling for this. What is the best course of action for in my case? Links to examples would be appreciated.
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Windows Communication Foundation (WCF) can send messages using either buffered or streamed transfers. In the default buffered-transfer mode, a message must be completely delivered before a receiver can read it. In streaming transfer mode, the receiver can begin to process the message before it is completely delivered.
Windows Communication Foundation (WCF) is a framework for building service-oriented applications. Using WCF, you can send data as asynchronous messages from one service endpoint to another. A service endpoint can be part of a continuously available service hosted by IIS, or it can be a service hosted in an application.
A WCF client connects to a WCF service via an endpoint. Each service exposes its contract via one or more endpoints. An endpoint has an address (which is a URL specifying where the endpoint can be accessed) and binding properties that specify how the data will be transferred.
Upload and download methods should accept a parameter that controls the position of download/upload.
I am not sure this is implemented/supported out of the box. The WCF service must have a compatible client for this kind of approach.
Check this out for complete code.
http://www.abhisheksur.com/2010/09/progress-streamed-file-download-and.html
Other links you might find useful:
Chunking Channel
Introduction to Reliable Messaging with the Windows Communication Foundation
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