TORConfiguration *configuration = [TORConfiguration new];
configuration.cookieAuthentication = @(YES);
configuration.dataDirectory = [NSURL URLWithString:NSTemporaryDirectory()];
configuration.controlSocket = [configuration.dataDirectory URLByAppendingPathComponent:@"control_port"];
configuration.arguments = @[@"--ignore-missing-torrc"];

TORThread *thread = [[TORThread alloc] initWithConfiguration:configuration];
[thread start];

NSURL *cookieURL = [configuration.dataDirectory URLByAppendingPathComponent:@"control_auth_cookie"];
NSData *cookie = [NSData dataWithContentsOfURL:cookieURL];
TORController *controller = [[TORController alloc] initWithSocketURL:configuration.controlSocket];
[controller authenticateWithData:cookie completion:^(BOOL success, NSError *error) {
    if (!success)
        return;
    
    [controller addObserverForCircuitEstablished:^(BOOL established) {
        if (!established)
            return;
        
        [controller getSessionConfiguration:^(NSURLSessionConfiguration *configuration) {
            NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];
            ...
        }];
    }];
}];