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repo/core/curl/files/CURLOPT_USERAGENT.3
2024-11-09 22:03:25 -06:00

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.\" generated by cd2nroff 0.1 from CURLOPT_USERAGENT.md
.TH CURLOPT_USERAGENT 3 "2024-11-09" libcurl
.SH NAME
CURLOPT_USERAGENT \- HTTP user\-agent header
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERAGENT, char *ua);
.fi
.SH DESCRIPTION
Pass a pointer to a null\-terminated string as parameter. It is used to set the
User\-Agent: header field in the HTTP request sent to the remote server. You
can also set any custom header with \fICURLOPT_HTTPHEADER(3)\fP.
The application does not have to keep the string around after setting this
option.
Using this option multiple times makes the last set string override the
previous ones. Set it to NULL to disable its use again.
.SH DEFAULT
NULL, no User\-Agent: header is used.
.SH PROTOCOLS
This functionality affects http only
.SH EXAMPLE
.nf
int main(void)
{
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);
}
}
.fi
.SH AVAILABILITY
Added in curl 7.1
.SH 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.
.SH SEE ALSO
.BR CURLOPT_CUSTOMREQUEST (3),
.BR CURLOPT_HTTPHEADER (3),
.BR CURLOPT_REFERER (3),
.BR CURLOPT_REQUEST_TARGET (3)