are you definitely receiving a challenge the *second* time you run the
app? It is possible that the server sends a cookie representing the
login which the phone has now cached and is sending along with the
request (automatically) which is failing the login.
One thing you could try to see if it's that is to find the cookie
storage on startup and clean it out explicitly. That might then make the
server do the challenge again.
Just a shot-in-the-dark idea.
Antonio Nunes wrote:
In the app I'm developing I connect to a server, to request some data. This
works fine. An authentication challenge is received and processed, and the
connection performs beautifully. If however I then change the
username/password, and attempt to connect again, the authentication is refused
by the server, but only when running on the device (iPhone/iPod Touch); when
running in the simulator changing to another account works just fine. This
problem persists between subsequent runs of the app. The only way to be able to
change to a new account on the device, is to delete the app completely from the
device, and then install it anew. In the simulator however, I can change
accounts and successfully connect to the sever as often as I want, including
within the same app session.
I verified the password and username are always correct when authenticating.
This is how I handle the challenge:
=====================
- (void)connection:(NSURLConnection *)connection
didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
NSString *username = [[NSUserDefaults standardUserDefaults]
objectForKey:userEmailAddressKey];
NSString *password = [[NSUserDefaults standardUserDefaults] objectForKey:uUserPasswordKey];
NSInteger failureCount = challenge.previousFailureCount;
if (failureCount == 0 && username && password) {
self.credential = [NSURLCredential credentialWithUser:username
password:password
persistence:NSURLCredentialPersistenceForSession];
[[NSURLCredentialStorage sharedCredentialStorage]
setDefaultCredential:self.credential
forProtectionSpace:[(MyAppDelegate
*)[[UIApplication sharedApplication] delegate] myProtectionSpace]];
[[challenge sender]
useCredential:self.credentialforAuthenticationChallenge:challenge];
} else {
[[challenge sender]
continueWithoutCredentialForAuthenticationChallenge:challenge];
}
}
=====================
The protection space is created when the app starts:
=====================
self.myProtectionSpace = [[[ NSURLProtectionSpacealloc]
initWithHost:@"www.some.url"
port:80
protocol:@"http"
realm:nil
authenticationMethod:NSURLAuthenticationMethodDefault] autorelease];
=====================
The connection is created thus:
=====================
-(void)fetchURL
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURLURLWithString:self.urlString]];
switch (method) {
case GET:
[theRequest setHTTPMethod:@"GET"];
break;
case POST:
[theRequest setHTTPMethod:@"POST"];
[theRequest setValue:[NSString stringWithFormat:@"%d", [self
.postDatalength]] forHTTPHeaderField:@"Content-Length"];
[theRequest setValue:@"application/xml"
forHTTPHeaderField:@"Content-Type"];
[theRequest setHTTPBody:self.postData];
break;
}
[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
[[NSRunLoop currentRunLoop ] runUntilDate:[NSDate
dateWithTimeIntervalSinceNow:60]];
[pool release];
}
=====================
Any ideas as to why I can't change accounts on the device, not even after
exiting and restarting the app? Since the code works in the simulator, and I
can't myself find anything wrong with it, it looks like a bug in the iPhone OS,
which I should file with Apple. Is anyone familiar with an issue like this,
and/or does anyone have a workaround so that we can change accounts without
having to delete and re-install the app?
-António
-----------------------------------------------------------
And could you keep your heart in wonder
at the daily miracles of your life,
your pain would not seem less wondrous
than your joy.
--Kahlil Gibran
-----------------------------------------------------------
----------------------------------------------------
There is a world of difference between
searching for happiness and choosing
to be happy.
----------------------------------------------------
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