Detect Range Request?

mythz · March 7, 2019, 9:44pm

Have a look at the 2 places where ServiceStack checks for HTTP Range requests, when returning a file or stream in a HttpResult:

github.com

ServiceStack/ServiceStack/blob/0b84a5a638d4230e6211eba554796980fcdc1f3b/src/ServiceStack/HttpResult.cs#L333-L340


var rangeHeader = RequestContext.GetHeader(HttpHeaders.Range);


rangeHeader.ExtractHttpRanges(contentLength, out var rangeStart, out var rangeEnd);


if (rangeEnd > contentLength - 1)
    rangeEnd = contentLength - 1;


response.AddHttpRangeResponseHeaders(rangeStart, rangeEnd, contentLength);

And if a HTTP Range request was made to a static file:

github.com

ServiceStack/ServiceStack/blob/master/src/ServiceStack/Host/Handlers/StaticFileHandler.cs#L226-L236


    r.AddHeader(HttpHeaders.AcceptRanges, "bytes");
long contentLength = file.Length;
long rangeStart, rangeEnd;
var rangeHeader = request.Headers[HttpHeaders.Range];
if (appHost.Config.AllowPartialResponses && rangeHeader != null)
{
    rangeHeader.ExtractHttpRanges(contentLength, out rangeStart, out rangeEnd);


    if (rangeEnd > contentLength - 1)
        rangeEnd = contentLength - 1;

Note: in order to check for Range requests in both Service and static file requests you’ll need to register a IAppHost.PreRequestFilters which is the first filter in the Request Pipeline.