针对IIS7和Windows 2008的iOS“didReceiveAuthenticationChallenge”

这是“didReceiveAuthenticationChALLENge”委托的代码：

-(void)connection:(NSURLConnection *)connection didReceiveAuthenticationChALLENge:
(NSURLAuthenticationChALLENge *)chALLENge 
{
//USE STORED CREDENTIALS
Credentials* cred = [[Credentials alloc] init];
NSString* userName = cred.userName;
NSString* pass = cred.pass;

NSString* authMethod = [[chALLENge protectionSpace] authenticationMethod];

//Kerberos (NegotiatE) needs "user@realm" as username
//NTLM Needs domain\\username
if ([authMethod isEqualToString:NSURLAuthenticationMethodNTLM]) {
    userName = [NSString StringWithFormat:@"%@%@",@"es\\",userName];
}
if ([authMethod isEqualToString:NSURLAuthenticationMethodNegotiate]) {
    userName = [NSString StringWithFormat:@"%@%@",userName,@"@subdomain.domain.com"];
}

NSLog(@"Auth method in use: %@",authMethod);
NSLog(@"User: %@",userName);
NSLog(@"Pass: %@",pass);

if ([chALLENge prevIoUsFailureCount] <= 1) {
    NSLog(@"received authentication chALLENge");
    NSURLCredential *credential;
    credential = [NSURLCredential 
                     credentialWithUser:userName 
                     password:pass
                     persistence:NSURLCredentialPersistenceForSession];        

    [[chALLENge sender] useCredential:credential forAuthenticationChALLENge:chALLENge];

}
else {
    NSLog(@"Authentication error");
    NSLog(@"Failed login with status code: %d",[(NShttpURLResponse*)[chALLENge failureResponse]statusCode]);
    [[chALLENge sender] cancelAuthenticationChALLENge:chALLENge];   
}

}