How do I upload & download files using WCF?

I'm looking for the best way to accomplish these tasks. What follows is the best information that I've found. I will periodically update this post as I discover more information.

Examples:

• There is a streaming example in the "Windows Communication Foundation (WCF) and Windows CardSpace Samples" that can be found here: [Extraction Directory]\ TechnologySamples\ Basic\ Contract\ Service\ Stream. Help for this example can be found at the .NET Framework Developer Center here: Example help
  
• There is a chunking channel example in the "Windows Communication Foundation (WCF) and Windows CardSpace Samples" that can be found here: [Extraction Directory]\ TechnologySamples\ Extensibility\ Channels\ ChunkingChannel. Help for this example can be found at the .NET Framework Developer Center here: Example help
  
• There is a streaming over https example in the "Windows Communication Foundation (WCF) and Windows CardSpace Samples" that can be found here: [Extraction Directory]\ C:\Temp\TechnologySamples\Extensibility\Binding\WSStreamedHttpBinding. Help for this example can be found at the.NET Framework Developer Center here: Example help

WCF gotchas:

• Don't forget to set the maxReceivedMessageSize attribute of your binding to something fairly high if you are sending large files.
  

IIS gotchas:

• Increase the maxRequestLength, which represents maximum length in kilobytes, in the System.Web section of my web.config file in order to upload large files to your server (i.e., < maxrequestlength="65536"> ). Remember that the reason maxRequestLength in the System.Web section was set so low was to decrease your vulnerability to denial-of-service attacks.
  

Articles worth reading:

• Kjell-Sverre Jerijærvi: "WCF Streaming: Upload files over HTTP".
• MSDN: Service Contract: Stream
• MSDN: How to: Enable Streaming
  
• MSDN: Large Data and Streaming