x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
CURLOPT_ALTSVC(3) libcurl CURLOPT_ALTSVC(3)
NAME
CURLOPT_ALTSVC - alt-svc cache file name
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ALTSVC, char *filename);
DESCRIPTION
Pass in a pointer to a filename to instruct libcurl to use that file as
the Alt-Svc cache to read existing cache contents from and possibly
also write it back to after a transfer, unless CURLALTSVC_READONLYFILE
is set in CURLOPT_ALTSVC_CTRL(3).
Specify a blank file name ("") to make libcurl not load from a file at
all.
DEFAULT
NULL. The alt-svc cache is not read nor written to file.
PROTOCOLS
HTTPS
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_ALTSVC_CTRL, CURLALTSVC_H1);
curl_easy_setopt(curl, CURLOPT_ALTSVC, "altsvc-cache.txt");
curl_easy_perform(curl);
}
FILE FORMAT
A text based file with one line per alt-svc entry and each line con-
sists of nine space-separated fields.
An example line could look like
h2 www.example 8443 h3 second.example 443 "20190808 06:18:37" 1 0
The fields of that line are:
h2 ALPN id for the source origin
www.example
Host name for the source origin
8443 Port number for the source origin
h3 ALPN id for the destination host
second.example
Host name for the destination host
443 Port number for the destination host
2019* Expiration date and time of this entry within double quotes. The
date format is "YYYYMMDD HH:MM:SS" and the time zone is GMT.
1 Boolean (1 or 0) if "persist" was set for this entry
0 Integer priority value (not currently used)
AVAILABILITY
Added in 7.64.1
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
SEE ALSO
CURLOPT_ALTSVC_CTRL(3), CURLOPT_CONNECT_TO(3), CURLOPT_COOKIEFILE(3),
CURLOPT_RESOLVE(3)
ibcurl 8.4.0 September 26, 2023 CURLOPT_ALTSVC(3)
Want to link to this manual page? Use this URL:
<http://star2.abcm.com/cgi-bin/bsdi-man?query=CURLOPT_ALTSVC&sektion=3&manpath=>