**************************************************************************
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* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
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* This software is licensed as described in the file COPYING, which
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**************************************************************************

CURLOPT_USERAGENT - set HTTP user-agent header #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERAGENT, char *ua); Pass a pointer to a null-terminated string as parameter. It will be used to set the User-Agent: header in the HTTP request sent to the remote server. This can be used to fool servers or scripts. You can also set any custom header with CURLOPT_HTTPHEADER(3). The application does not have to keep the string around after setting this option. NULL, no User-Agent: header is used by default. HTTP, HTTPS

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

 curl_easy_setopt(curl, CURLOPT_USERAGENT, "Dark Secret Ninja/1.0");

 curl_easy_perform(curl);
}

As long as HTTP is supported Returns CURLE_OK if HTTP is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space. CURLOPT_REFERER "(3), " CURLOPT_HTTPHEADER "(3), "