Hi, Apologies for butting in, but... No problem, any opinion may help.
If I remove the entry from "hosts" and try to post to it using libcurl, it takes about 15-20 seconds for the call to curl_easy_perform to return with an error CURLE_COULDNT_CONNECT, and during this time I don't get any calls to the progress callback. A DNS timeout typically happens after 4 seconds (2 seconds for each nameserver) unless you've configured your local resolver differently. Is it possible that the resolver your machine is using is working but returning a different IP address to what you expect and are thus putting in your hosts file? I'm not sure I understand what you mean, at least in the context of my question. To summarize: The libcurl I use is compiled to use c-ares as DNS resolver, and if I understand things correctly, that should bypass any other DNS resolver. The resolver seems to work correctly, as it succeeds when the entry is in the hosts file, and it fails when the entry isn't. My issue is that in the case where the entry is not in the host file, I don't get a chance to cancel the request before the 15-20 seconds pass, whether it's trying to resolve the name or doing something else. That would normally be done by receiving periodic calls in the progress callback function, but that doesn't get called for the whole duration of the request. That function gets called however during a succesful request. Thanks, Adrian
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