>>>I am not sure what "express" means, but chunked encoding may be problematic. Try without it and see if it helps.
I have tried with range request making sure headers are set correctly set. But still seeing same issue. >>>
I don't use sendFile();
>>> I assume with "express" you are referring to the node framework. Are
you using sendFile() so you are actually sending byte ranges on the
server?
I don't use sendFile(); I read the file in a raw
buffer(file is small to this works) when server starts and then slice
the data as requested by client.