I am seeing a great deal of 206 status codes associated with .pdf files on my site. The same user may have five 206 GET requests (with various amounts of bytes transfered) and one 200 showing a zero byte transfer. These do not appear to be robots. My theory is that there is some sort of download manager at work, breaking the files into smaller pieces for transfer, but It seems to be coming from all types of user agents and IP's. (Also let me note that the PDF's in question are user manuals and quite large files.)
The question is how do I determine the total number of "downloads" of these .pdf files .. just count the 200 codes or should I factor in the 206's ..
thanks in advance
