CURLOPT_ABSTRACT_UNIX_SOCKET - abstract Unix domain socket

Added in curl 7.53.0

NULL

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 path 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 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.

int main(void) { CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_ABSTRACT_UNIX_SOCKET, "/tmp/foo.sock"); curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/"); /* Perform the request */ curl_easy_perform(curl); } }

CURLOPT_ABSTRACT_UNIX_SOCKET - abstract Unix domain socket

This functionality affects all supported protocols

curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

CURLOPT_UNIX_SOCKET_PATH(3), unix(7) libcurl 2025-06-16 CURLOPT_ABSTRACT_UNIX_SOCKET(3)

#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ABSTRACT_UNIX_SOCKET, char *path);