didReceiveAuthenticationChallenge method crashes in the SDK 3.1.2 - iphone

Question

I have code running good in 3.0 and 3.1 but when I use the SDK 3.1.2 is crash at the didReceiveAuthenticationChallenge method says a log "obj_msgSend" . It happens always when using didReceiveAuthenticationChallenge .
Also I have all the other methods in that class
didreceive response
connectionfinishloading
didfailwitherror etc
Please help me out

Answer 1

I got the answer do not release the [newCredential release];
in didreceiveauthentiationchallenge

Answer 2

I am posting the twitter request class method , which is calling the twitter XML API URL for sending messages .
Which require authentication .
-(void)statuses_update:(NSString *)status delegate:(id)requestDelegate requestSelector:(SEL)requestSelector; {
isPost = YES;
// Set the delegate and selector
self.delegate = requestDelegate;
self.callback = requestSelector;
// The URL of the Twitter Request we intend to send
NSURL *url = [NSURL URLWithString:#"http://twitter.com/statuses/update.xml"];
requestBody = [NSString stringWithFormat:#"status=%#",status];
[self request:url];
}
-(void)request:(NSURL *) url {
theRequest = [[NSMutableURLRequest alloc] initWithURL:url];
if(isPost) {
NSLog(#"ispost");
[theRequest setHTTPMethod:#"POST"];
[theRequest setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[theRequest setHTTPBody:[requestBody dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]];
[theRequest setValue:[NSString stringWithFormat:#"%d",[requestBody length] ] forHTTPHeaderField:#"Content-Length"];
}
theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (theConnection) {
// Create the NSMutableData that will hold
// the received data
// receivedData is declared as a method instance elsewhere
receivedData=[[NSMutableData data] retain];
} else {
// inform the user that the download could not be made
}
}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge: (NSURLAuthenticationChallenge *)challenge {
//NSLog(#"challenged %#",[challenge proposedCredential] );
if ([challenge previousFailureCount] == 0) {
NSURLCredential *newCredential;
newCredential=[NSURLCredential credentialWithUser:[self username] password:[self password] persistence:NSURLCredentialPersistenceNone];
[[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
[newCredential release];
} else {
[[challenge sender] cancelAuthenticationChallenge:challenge];
// inform the user that the user name and password
// in the preferences are incorrect
NSLog(#"Invalid Username or Password");
isFirstTime==NO;
UIAlertView * userNameAlert = [[UIAlertView alloc]initWithTitle:#"Alert" message:#"Invalid credentials. Please check your login details !" delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK",nil];
[userNameAlert show];
if(delegate && callback) {
if([delegate respondsToSelector:self.callback]) {
[delegate performSelector:self.callback withObject:nil];
} else {
NSLog(#"No response from delegate");
}
}
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
// this method is called when the server has determined that it
// has enough information to create the NSURLResponse
// it can be called multiple times, for example in the case of a
// redirect, so each time we reset the data.
// receivedData is declared as a method instance elsewhere
[receivedData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
//NSLog([[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);
// append the new data to the receivedData
// receivedData is declared as a method instance elsewhere
[receivedData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
// release the connection, and the data object
[connection release];
// receivedData is declared as a method instance elsewhere
[receivedData release];
[theRequest release];
// inform the user
NSLog(#"Connection failed! Error - %# %#",
[error localizedDescription],
[[error userInfo] objectForKey:NSErrorFailingURLStringKey]);
if(errorCallback) {
[delegate performSelector:errorCallback withObject:error];
}
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
// do something with the data
if(delegate && callback) {
UIAlertView * userNameAlert = [[UIAlertView alloc]initWithTitle:#"Congratulation" message:#"Your Message is successfully posted to twitter !" delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK",nil];
[userNameAlert show];
isLoginChanged =YES;
isFirstTime==NO;
if([delegate respondsToSelector:self.callback]) {
[delegate performSelector:self.callback withObject:receivedData];
} else {
NSLog(#"No response from delegate");
}
}
// release the connection, and the data object
[theConnection release];
[receivedData release];
[theRequest release];
}