Question

I have a HttpHandler which will do some checks on the incoming requests and in certain cases perform some function. One of the conditions that needs to be checked is whether the request is a byte-range request. How is this done?

Answer 1

You need to look for a Range header in the Request object that’s part of the HttpContext passed to your ProcessRequest method. There is no Range property in the HttpRequest class, so you’ll have to look in the Headers. If there is a Range it will be of the form:

Range: bytes=<start>-<end>

Where <start> and <end> are integers. For example, if somebody wanted 64K from the middle of a file:

Range: bytes=32768-98304

You’ll have to parse the text into numbers and handle accordingly.