Change UserAgent in NSMutableURLRequest

gistfile1.m

    NSString *urlString = [NSString stringWithFormat:@"http://example.com/foo"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
    NSString *userAgent = [NSString stringWithFormat:@"igaiga Browser"];
    [request setValue:userAgent forHTTPHeaderField:@"User-Agent"];    
    
    NSURLResponse *response;
    NSError *error = nil;
    NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];