some more checks for window range values
some more checks for window range values

erikdejonge/slowhttptest,drat/slowhttptest,rodrigoac/slowhttptest,erikdejonge/slowhttptest,drat/slowhttptest,blu3sh3ll/slowhttptest,rodrigoac/slowhttptest,michalkoczwara/slowhttptest,michalkoczwara/slowhttptest,shekyan/slowhttptest,shekyan/slowhttptest,blu3sh3ll/slowhttptest