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curl/docs/libcurl/opts/CURLOPT_ABSTRACT_UNIX_SOCKET.3
Isaac Boukris 1d786faee1 unix_socket: add support for abstract unix domain socket
In addition to unix domain sockets, Linux also supports an
abstract namespace which is independent of the filesystem.

In order to support it, add new CURLOPT_ABSTRACT_UNIX_SOCKET
option which uses the same storage as CURLOPT_UNIX_SOCKET_PATH
internally, along with a flag to specify abstract socket.

On non-supporting platforms, the abstract address will be
interpreted as an empty string and fail gracefully.

Also add new --abstract-unix-socket tool parameter.

Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Reported-by: Chungtsun Li (typeless)
Reviewed-by: Daniel Stenberg
Reviewed-by: Peter Wu
Closes #1197
Fixes #1061
2017-01-13 16:25:20 +01:00

59 lines
2.5 KiB
Groff

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.TH CURLOPT_ABSTRACT_UNIX_SOCKET 3 "08 Jan 2017" "libcurl 7.53.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_ABSTRACT_UNIX_SOCKET \- set an abstract Unix domain socket
.SH SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ABSTRACT_UNIX_SOCKET, char *path);
.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 zero terminated string
holding the path of the socket. The path will be 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).
On non-supporting platforms, the abstract address will be interpreted as an empty
string and fail gracefully, generating a run-time error.
This option shares the same semantics as
.BR CURLOPT_UNIX_SOCKET_PATH "(3)
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
Default is NULL.
.SH EXAMPLE
.nf
curl_easy_setopt(curl_handle, CURLOPT_ABSTRACT_UNIX_SOCKET, "/tmp/foo.sock");
curl_easy_setopt(curl_handle, CURLOPT_URL, "http://localhost/");
.fi
.SH AVAILABILITY
Since 7.53.0.
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_UNIX_SOCKET_PATH "(3), " unix "(7), "