public override Task Invoke(IOwinContext context)
{
var path = context.Request.Path.ToString();
var fileContext = new StaticFileContext(context);
if (fileContext.ValidateMethod())
{
var fileInfo = FindFile(path);
if (fileInfo != null)
{
var contentType = FindContentType(path);
fileContext.SetPayload(fileInfo, contentType);
fileContext.ComprehendRequestHeaders();
switch (fileContext.GetPreconditionState())
{
case StaticFileContext.PreconditionState.Unspecified:
case StaticFileContext.PreconditionState.ShouldProcess:
if (fileContext.IsHeadMethod)
{
return(fileContext.SendStatusAsync(Constants.Status200Ok));
}
return(fileContext.SendAsync());
case StaticFileContext.PreconditionState.NotModified:
return(fileContext.SendStatusAsync(Constants.Status304NotModified));
case StaticFileContext.PreconditionState.PreconditionFailed:
return(fileContext.SendStatusAsync(Constants.Status412PreconditionFailed));
default:
throw new NotImplementedException(fileContext.GetPreconditionState().ToString());
}
}
}
return(Next.Invoke(context));
}
