I have to transfer large files between computers on via unreliable connections using WCF.

Because I want to be able to resume the file and I don't want to be limited in my filesize by WCF, I am chunking the files into 1MB pieces. These "chunk" are transported as stream. Which works quite nice, so far.

My steps are:

1. open filestream
2. read chunk from file into byet[] and create memorystream
3. transfer chunk
4. back to 2. until the whole file is sent

My problem is in step 2. I assume that when I create a memory stream from a byte array, it will end up on the LOH and ultimately cause an outofmemory exception. I could not actually create this error, maybe I am wrong in my assumption.

Now, I don't want to send the byte[] in the message, as WCF will tell me the array size is too big. I can change the max allowed array size and/or the size of my chunk, but I hope there is another solution.

My actual question(s):

• Will my current solution create objects on the LOH and will that cause me problem?
• Is there a better way to solve this?

Btw.: On the receiving side I simple read smaller chunks from the arriving stream and write them directly into the file, so no large byte arrays involved.