.. CFCachedURLResponse.c CFNSURLConnection.m CFURLAuthChallenge.c CFURLCache.c CFURLConnection.c CFURLProtectionSpace.c CFURLRequest.c CFURLResponse.c NSCFURLSession.m NSURLAuthenticationChallenge.m NSURLAuthenticationChallengeInternal.h NSURLCache.m NSURLCacheInternal.h NSURLConnection.m NSURLConnectionInternal.h NSURLCredential.m NSURLCredentialInternal.h NSURLCredentialStorage.m NSURLDownload.m NSURLProtectionSpace.m NSURLProtectionSpaceInternal.h NSURLProtocol.m NSURLProtocolInternal.h NSURLRequest.m NSURLRequestInternal.h NSURLResponse.m NSURLResponseInternal.h NSURLSession.m _CFURLAccess.c