**************************************************************************
* _ _ ____ _
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*
* Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
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* furnished to do so, under the terms of the COPYING file.
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**************************************************************************

CURLOPT_VERBOSE - set verbose mode on/off #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_VERBOSE, long onoff); Set the onoff parameter to 1 to make the library display a lot of verbose information about its operations on this handle. Very useful for libcurl and/or protocol debugging and understanding. The verbose information will be sent to stderr, or the stream set with CURLOPT_STDERR(3). You hardly ever want this set in production use, you will almost always want this when you debug/report problems. To also get all the protocol data sent and received, consider using the CURLOPT_DEBUGFUNCTION(3). 0, meaning disabled. All

CURL *curl = curl_easy_init();
if(curl) {
 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

 /* ask libcurl to show us the verbose output */
 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);

 /* Perform the request */
 curl_easy_perform(curl);
}

Always Returns CURLE_OK CURLOPT_STDERR "(3), " CURLOPT_DEBUGFUNCTION "(3), " CURLOPT_ERRORBUFFER "(3), "