CURLOPT_UNIX_SOCKET_PATH - Online Linux Manual PageSection : 3
Updated : November 26, 2021
Source : libcurl 7.82.0
Note : curl_easy_setopt options
NAMECURLOPT_UNIX_SOCKET_PATH − Unix domain socket
SYNOPSIS#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UNIX_SOCKET_PATH, char *path);
DESCRIPTIONEnables the use of Unix domain sockets as connection endpoint and sets the path to path. If path is NULL, then Unix domain sockets are disabled. An empty string will result in an error at some point, it will not disable use of Unix domain sockets. When enabled, curl will connect to the Unix domain socket instead of establishing a TCP connection to a host. Since no TCP connection is created, curl does not need to resolve the DNS hostname in the URL. The maximum path length on Cygwin, Linux and Solaris is 107. On other platforms it might be even less. Proxy and TCP options such as CURLOPT_TCP_NODELAY(3) are not supported. Proxy options such as CURLOPT_PROXY(3) have no effect either as these are TCP-oriented, and asking a proxy server to connect to a certain Unix domain socket is not possible. The application does not have to keep the string around after setting this option.
DEFAULTDefault is NULL, meaning that no Unix domain sockets are used.
PROTOCOLSAll protocols except for FILE and FTP are supported in theory. HTTP, IMAP, POP3 and SMTP should in particular work (including their SSL/TLS variants).
EXAMPLEGiven that you have an HTTP server running listening on /tmp/httpd.sock, you can request an HTTP resource with: curl_easy_setopt(curl_handle, CURLOPT_UNIX_SOCKET_PATH, "/tmp/httpd.sock");
curl_easy_setopt(curl_handle, CURLOPT_URL, "http://localhost/");If you are on Linux and somehow have a need for paths larger than 107 bytes, you could use the proc filesystem to bypass the limitation: int dirfd = open(long_directory_path_to_socket, O_DIRECTORY | O_RDONLY);
char path[108];
snprintf(path, sizeof(path), "/proc/self/fd/%d/httpd.sock", dirfd);
curl_easy_setopt(curl_handle, CURLOPT_UNIX_SOCKET_PATH, path);
/* Be sure to keep dirfd valid until you discard the handle */
AVAILABILITYAdded in 7.40.0.
RETURN VALUEReturns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSOCURLOPT_ABSTRACT_UNIX_SOCKET(3)," CURLOPT_OPENSOCKETFUNCTION(3), unix (7)," 0
Johanes Gumabo
Data Size : 6,788 byte
man-CURLOPT_UNIX_SOCKET_PATH.3Build : 2024-12-29, 07:25 :
Visitor Screen : x
Visitor Counter ( page / site ) : 6 / 257,248
Visitor ID : :
Visitor IP : 3.22.27.222 :
Visitor Provider : AMAZON-02 :
Provider Position ( lat x lon ) : 39.962500 x -83.006100 : x
Provider Accuracy Radius ( km ) : 1000 :
Provider City : Columbus :
Provider Province : Ohio , : ,
Provider Country : United States :
Provider Continent : North America :
Visitor Recorder : Version :
Visitor Recorder : Library :
Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.29
Online Linux Manual Page : Library : lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page : Library : lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base : Version : Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base : Library : lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.