iphone - Problem with NSHTTPCookie -

i want make login application. first screen login form 2 text fields , 1 button. when pres button invoke 1 method invoke method:

- (int)login { // add data post request  nshttpurlresponse * response; nsstring *myrequeststring = [[nsstring alloc] initwithformat:@"userdata='%@'&passdata='%@'",                              username.text, password.text]; nserror * error; nsdata *myrequestdata = [nsdata datawithbytes: [myrequeststring utf8string] length: [myrequeststring length]]; nsmutableurlrequest *request; request = [[[nsmutableurlrequest alloc] initwithurl:[nsurl urlwithstring:@"http://server.com/login.php"]                                         cachepolicy:nsurlrequestreloadignoringcachedata                                      timeoutinterval:60] autorelease];  [request sethttpmethod: @"post"]; [request sethttpbody: myrequestdata]; [request setvalue:@"application/x-www-form-urlencoded" forhttpheaderfield:@"content-type"];  nsdata * data = [nsurlconnection sendsynchronousrequest:request returningresponse:&response error:&error];    nsarray * = [nshttpcookie cookieswithresponseheaderfields:[response allheaderfields] forurl:[nsurl urlwithstring:@"http://server.com/login.php"]];  //int cid;  (nshttpcookie *cookie in all) {     nslog(@"name: %@ : value: %@", cookie.name, cookie.value);  //    cid = (int)cookie.value; }  //  nslog(@"id: %d",cid);  [myrequeststring release]; [request release];  return 1; } 

when pres button program crash , next row:

nsarray * = [nshttpcookie cookieswithresponseheaderfields:[response allheaderfields] forurl:[nsurl urlwithstring:@"http://sms.britecs.com/login.php"]]; 

i have thread1: program received signal: "exc_bad_access" don't know how fix it.

i have 1 more question. how can use cookies in next screen?

thanks

with [request release]; releasing autoreleased object. don't that, it'll released next run loop cycle autorelease pool. remove autorelease @ end of initialization , fine, else remove release statement.

here creating it:

request = [[[nsmutableurlrequest alloc] initwithurl:[nsurl urlwithstring:@"http://server.com/login.php"]                                         cachepolicy:nsurlrequestreloadignoringcachedata                                      timeoutinterval:60] autorelease]; // <---