.\" generated by cd2nroff 0.1 from CURLOPT_ABSTRACT_UNIX_SOCKET.md
.TH CURLOPT_ABSTRACT_UNIX_SOCKET 3 "2026-06-24" libcurl
.SH NAME
CURLOPT_ABSTRACT_UNIX_SOCKET \- abstract Unix domain socket
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ABSTRACT_UNIX_SOCKET,
                          char *path);
.fi
.SH DESCRIPTION
Enables the use of an abstract Unix domain socket instead of establishing a
TCP connection to a host. The parameter should be a char * to a
null\-terminated string holding the path of the socket. The path is set to
\fIpath\fP prefixed by a NULL byte. This is the convention for abstract
sockets, however it should be stressed that the path passed to this function
should not contain a leading NULL byte.

On non\-supporting platforms, the abstract address is interpreted as an empty
string and fails gracefully, generating a runtime error.

This option shares the same semantics as \fICURLOPT_UNIX_SOCKET_PATH(3)\fP in
which documentation more details can be found. Internally, these two options
share the same storage and therefore only one of them can be set per handle.
.SH DEFAULT
NULL
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    curl_easy_setopt(curl, CURLOPT_ABSTRACT_UNIX_SOCKET, "/tmp/foo.sock");
    curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");

    /* Perform the request */
    result = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.53.0
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_UNIX_SOCKET_PATH (3),
.BR unix (7)