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.\" generated by cd2nroff 0.1 from CURLOPT_USERNAME.md
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.TH CURLOPT_USERNAME 3 "2024-06-01" libcurl
.SH NAME
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CURLOPT_USERNAME \- username to use in authentication
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERNAME,
char *username);
.fi
.SH DESCRIPTION
Pass a char pointer as parameter, which should be pointing to the
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null\-terminated username to use for the transfer.
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\fICURLOPT_USERNAME(3)\fP sets the username to be used in protocol
authentication. You should not use this option together with the (older)
\fICURLOPT_USERPWD(3)\fP option.
When using Kerberos V5 authentication with a Windows based server, you should
include the domain name in order for the server to successfully obtain a
Kerberos Ticket. If you do not then the initial part of the authentication
handshake may fail.
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When using NTLM, the username can be specified simply as the username without
the domain name should the server be part of a single domain and forest.
To include the domain name use either Down\-Level Logon Name or UPN (User
Principal Name) formats. For example, \fBEXAMPLE\user\fP and
\fBuser@example.com\fP respectively.
Some HTTP servers (on Windows) support inclusion of the domain for Basic
authentication as well.
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To specify the password and login options, along with the username, use the
\fICURLOPT_PASSWORD(3)\fP and \fICURLOPT_LOGIN_OPTIONS(3)\fP options.
The application does not have to keep the string around after setting this
option.
.SH DEFAULT
blank
.SH PROTOCOLS
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All
.SH EXAMPLE
.nf
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_USERNAME, "clark");
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
.fi
.SH AVAILABILITY
Added in 7.19.1
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
.SH SEE ALSO
.BR CURLOPT_HTTPAUTH (3),
.BR CURLOPT_PASSWORD (3),
.BR CURLOPT_PROXYAUTH (3),
.BR CURLOPT_USERPWD (3)