On 5/17/2016 2:36 PM, Colin Ngam wrote:
> In a PUT situation, you can register a callback to capture any
> messages from the Server. However, in the case of a GET, since the
> callback is used for receiving data from the server, how do you get
> error messages from the Server if any? How do you tell the difference
> when the callback is called that it is data or an extended error
> message from the Server?

After curl_easy_perform returns check the HTTP response code [1] in
addition to its return code. It's also possible to fail on error [2] but
that closes the connection for each failure (ie another one will be
opened for the next request to that server), which may not be good
depending on your circumstances.

[1]: https://curl.haxx.se/libcurl/c/CURLINFO_RESPONSE_CODE.html
[2]: https://curl.haxx.se/libcurl/c/CURLOPT_FAILONERROR.html

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Received on 2016-05-17