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CURLOPT_USERAGENT(3)                libcurl               CURLOPT_USERAGENT(3)

NAME

CURLOPT_USERAGENT - HTTP user-agent header

SYNOPSIS

#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERAGENT, char *ua);

DESCRIPTION

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.

DEFAULT

NULL, no User-Agent: header is used by default.

PROTOCOLS

HTTP, HTTPS

EXAMPLE

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); }

AVAILABILITY

As long as HTTP is supported

RETURN VALUE

Returns CURLE_OK if HTTP is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO

CURLOPT_REFERER(3), CURLOPT_HTTPHEADER(3), ibcurl 8.1.2 April 26, 2023 CURLOPT_USERAGENT(3)

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