.net - Retrieving Data After Using System.Net.Sockets SendFile?

I'm coding a simple TCP client/server in VB.NET to transfer files of all sizes. I decided to use System.Net.Sockets's command SendFile to transfer the bytes through the socket.

On the receiving side, my code to retrieve the bytes works fairly well, but occasionally the transfer randomly stops. I figured out that by putting a small sleep delay between retrieving the next block of data makes the transfers 100% stable.My code to retrieve the data (until there is no data available) is simplified as this:

While newSocket.Available > 0
Threading.Thread.Sleep(100)
newSocket.ReceiveFrom(data, Remote)
End While

I really hate using that sleep delay and figure there must be a proper method/function to retrieve data from SendFile?