Basic Authorisation with backslash “\” in username

Question

Basic Authorisation with backslash “\” in username using Objective C .Always giving unauthorized 401 error. I have doubt might be username with backslash creating problem. Please help in resolving this query at http://findnerd.com/list/view/Basic-Authorisation-with-back-slash--in-username-using-Objective-C/4767/