Section: curl_easy_setopt options (3)
Updated: June 25, 2020
CURLOPT_USERAGENT - set HTTP user-agent header
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
The application does not have to keep the string around after setting this
NULL, no User-Agent: header is used by default.
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
curl_easy_setopt(curl, CURLOPT_USERAGENT, "Dark Secret Ninja/1.0");
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.