ios - NSURLConnection Return Cached Response Even After Resetting Authorization Heder -

so use case.

1. application run, authorization header set nil. fresh data.

   [_request setvalue:nil forhttpheaderfield:@"authorization"];

2. user login, after requests server send authorization header this.

   [_request setvalue:[nsstring stringwithformat:@"truerest username=%@&session_token=%@&apikey=1234567890",@"username",@"session_token"] forhttpheaderfield:@"authorization"];

3. now log out , every request goes authorization header nil value.

   [_request setvalue:nil forhttpheaderfield:@"authorization"];

but still getting response if logged in user? idea what's issue?

request server made using follows

[nsurlconnection sendasynchronousrequest:_request                                            queue:[nsoperationqueue mainqueue]                                completionhandler:^(nsurlresponse *response, nsdata *data, nserror *error) {}]; 

i have tried make nsmutableurlrequest in following 2 ways.

    _request = [nsmutableurlrequest requestwithurl:url];      _request = [[nsmutableurlrequest alloc] initwithurl:url                                                                 cachepolicy:nsurlrequestreloadrevalidatingcachedata                                                             timeoutinterval:60]; 

you might disable use of cookies before use request:

[_request sethttpshouldhandlecookies:no]; 

alternatively, delete cookie - or relevant cookie - form nshttpcookiestorage singleton.

however, improve code using nsurlconnection implementing delegate connection:willsendrequestforauthenticationchallenge: able customize authentication handling.