I have a requirement to set the SameSite cookie attribute based on UserAgent. Essentially, we have a significant number of clients on an older, pre-76 version of Chrome (via embedded chromium). They’re in an environment where they will not be able to upgrade any time soon. We need to support them as well as clients that are on post v76 of Chrome (when the SameSite support was introduced).
Having read this thread I’ve upgraded the solution to .NET Framework 4.8 and ServiceStack 5.8.
I’ve overridden the HttpCookieFilter (which takes a System.Web.HttpCookie) and SetCookieFilter (which takes IRequest object a System.Net.Cookie).
The SameSite property only exists on the HttpCookie and not the Cookie type. Using the SetCookieFilter override I can interrogate the IRequest argument to determine the useragent but I cannot set the SameSite property as the Cookie type does not contain it. Conversely, on the surface, it would seem that using the HttpCookieFilter override I cannot obtain the useragent (although I could try the System.Web.HttpContext.Current.Request.UserAgent which still feels a bit hacky) but can set the HttpCookie SameSite property.
Without resorting to constructing a hacky workaround, setting the cookie as mythz tentatively suggests in post 13 of the aforementioned thread, is there a better way of achieving my goal?