#import <MOLAuthenticatingURLSession/MOLAuthenticatingURLSession.h>

- (void)postToServer {
  MOLAuthenticatingURLSession *authURLSession = [[MOLAuthenticatingURLSession alloc] init];
  authURLSession.userAgent = @"MyUserAgent";
  authURLSession.refusesRedirects = YES;
  authURLSession.serverHostname = @"my-hostname.com";
  NSURLSession *session = authURLSession.session;
  // You can use the NSURLSession as you would normally..
}

  authURLSession.loggingBlock = ^(NSString *line) {
    NSLog(@"%@", line);
  };