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    <p>Okay I have found what seems to be ideal for me. I don't know if it's perfect, but it's pretty darn good for my needs.</p> <p>On the <code>Server</code> side, we have this code that does the work of transferring the file. The <code>chunkedFile</code> class obviously does the chunking, but this is the code that sends the information to the <code>Client</code>.</p> <pre><code> public FileMessage ReceiveFile() { byte[] buffer = chunkedFile.NextChunk(); FileMessage message = new FileMessage(); message.FileMetaData = new FileMetaData(chunkedFile.MoreChunks, buffer.LongLength, chunkedFile.CurrentPosition); message.ChunkData = new MemoryStream(buffer); TotalBytesTransferred = chunkedFile.CurrentPosition; UpdateTotalBytesTransferred(message); if (!chunkedFile.MoreChunks) { OnTransferComplete(this, EventArgs.Empty); Timer timer = new Timer(20000f); timer.Elapsed += (sender, e) =&gt; { StopSession(); timer.Stop(); }; timer.Start(); } return message; } </code></pre> <p>The client basically calls this code, and the server proceeds to get a new chunk, put it in a stream, update the <code>TotalBytesTransferred</code> based on the position of the <code>chunkedFile</code>(which keeps track of the underlying file system file that is used to draw the data from). I'll show the method <code>UpdateTotalBytesTransferred(message)</code> in a moment, as that is where all the code for the server and client reside to achieve the more granular polling of the <code>TotalBytesTransferred</code>.</p> <p>Next up is the client side work.</p> <pre><code> hostChannel = channelFactory.CreateChannel(); ((IContextChannel)hostChannel).OperationTimeout = new TimeSpan(3, 0, 0); bool moreChunks = true; using (BinaryWriter writer = new BinaryWriter(File.OpenWrite(fileWritePath))) { writer.BaseStream.SetLength(0); while (moreChunks) { FileMessage message = hostChannel.ReceiveFile(); moreChunks = message.FileMetaData.MoreChunks; UpdateTotalBytesTransferred(message); writer.BaseStream.Position = filePosition; message.ChunkData.CopyTo(writer.BaseStream); TotalBytesTransferred = message.FileMetaData.FilePosition; filePosition += message.FileMetaData.ChunkLength; } OnTransferComplete(this, EventArgs.Empty); } </code></pre> <p>This code is very simple. It calls the host to get the file stream, and also utilizes the <code>UpdateTotalBytesTransferred(message)</code> method. It does a little bit of work to remember the position of the underlying file that is being written, and copies the stream to that file while also updating the <code>TotalBytesTransferred</code> after finishing.</p> <p>The way I achieved the granularity I was looking for was with the <code>UpdateTotalBytesTransferred</code> method as follows. It works exactly the same for both the Server and the Client.</p> <pre><code>private void UpdateTotalBytesTransferred(FileMessage message) { long previousStreamPosition = 0; long totalBytesTransferredShouldBe = TotalBytesTransferred + message.FileMetaData.ChunkLength; Timer timer = new Timer(500f); timer.Elapsed += (sender, e) =&gt; { if (TotalBytesTransferred + (message.ChunkData.Position - previousStreamPosition) &lt; totalBytesTransferredShouldBe) { TotalBytesTransferred += message.ChunkData.Position - previousStreamPosition; previousStreamPosition = message.ChunkData.Position; } else { timer.Stop(); timer.Dispose(); } }; timer.Start(); } </code></pre> <p>What this does is take in the FileMessage which is basically just a stream and some information about the file itself. It has a variable <code>previousStreamPosition</code> to remember the last position it was when it was polling the underlying stream. It also does a simple calculation with <code>totalBytesTransferredShouldBe</code> based on how many bytes are already transferred plus the total length of the stream.</p> <p>Finally, a timer is created and executed, which upon every tick checks to see if it needs to be incrementing the <code>TotalBytesTransferred</code>. If it's not supposed to update it anymore(reached the end of the stream basically), it stops and disposes of the timer.</p> <p>This all allows me to get very small reads of how many bytes have been transferred, which lets me better calculate the total progress in a more fluid way, as more accurately measure the file transfer speeds achieved.</p>
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    1. POHow do I achieve better granularity when performing streaming operations?
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    1. POHow do I achieve better granularity when performing streaming operations?
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