WebApi VersioningFilter

VersioningFilter

public class VersioningFilter : ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext actionContext)
        {            
            var acceptHeaderContents = ...;
            if (string.IsNullOrWhiteSpace(acceptHeaderContents))
            {                
                actionContext.Response = actionContext.Request.CreateErrorResponse(HttpStatusCode.NotAcceptable, "No accept header provided");
            }
            else if (!IsCompatibleRequestVersion(acceptHeaderContents))
            {             
                actionContext.Response = actionContext.Request.CreateErrorResponse(HttpStatusCode.NotAcceptable, "Incompatible client version");
            }
            else
            {
                base.OnActionExecuting(actionContext);
            }
        }
    }