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.TH CURLOPT_USERNAME 3 "November 04, 2020" "libcurl 7.77.0" "curl_easy_setopt options"

.SH NAME
CURLOPT_USERNAME \- user name to use in authentication
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERNAME,
                          char *username);
.SH DESCRIPTION
Pass a char * as parameter, which should be pointing to the null-terminated
user name to use for the transfer.

\fICURLOPT_USERNAME(3)\fP sets the user name 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 don't then the initial part of the authentication
handshake may fail.

When using NTLM, the user name can be specified simply as the user name
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, EXAMPLE\\user and user@example.com
respectively.

Some HTTP servers (on Windows) support inclusion of the domain for Basic
authentication as well.

To specify the password and login options, along with the user name, 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
Most
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");

  curl_easy_setopt(curl, CURLOPT_USERNAME, "clark");

  ret = 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_USERPWD "(3), " CURLOPT_PASSWORD "(3), "
.BR CURLOPT_HTTPAUTH "(3), " CURLOPT_PROXYAUTH "(3)"
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