On Fri, Jan 11, 2008 at 11:17:45AM -0800, weiping guo wrote:
> Sorry, my bad. My original code looks like this.
>
> char url[REQUEST_LEN*2];
> memset(url,0, REQUEST_LEN*2);
> int n = sprintf(url, "http://%s:%d/%s?%s", this->ip_, this->port_, this->url_, request);
>
> It seems that curl is trying to cache the DNS entry. For the first time to call this function, it always return an error. Subsequent calls never fail.

If you are passing in IP addresses directly, there's nothing to cache.
Have you tried logging the URL you pass in to curl each time to make sure
that it's what you expect each time through?

And this is really a libcurl question that is better handled on the libcurl
mailinglist.

>>> Dan

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