mirror of
https://codeberg.org/kiss-community/repo
synced 2024-08-19 12:46:58 +00:00
42 lines
1.2 KiB
Groff
42 lines
1.2 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_SSL_ENABLE_ALPN.md
|
|
.TH CURLOPT_SSL_ENABLE_ALPN 3 "2024-06-01" libcurl
|
|
.SH NAME
|
|
CURLOPT_SSL_ENABLE_ALPN \- Application Layer Protocol Negotiation
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_ENABLE_ALPN, long npn);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
Pass a long as parameter, 0 or 1 where 1 is for enable and 0 for disable. This
|
|
option enables/disables ALPN in the SSL handshake (if the SSL backend libcurl
|
|
is built to use supports it), which can be used to negotiate http2.
|
|
.SH DEFAULT
|
|
1, enabled
|
|
.SH PROTOCOLS
|
|
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
|
|
|
|
All TLS backends support this option.
|
|
.SH EXAMPLE
|
|
.nf
|
|
int main(void)
|
|
{
|
|
CURL *curl = curl_easy_init();
|
|
if(curl) {
|
|
CURLcode res;
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
|
|
curl_easy_setopt(curl, CURLOPT_SSL_ENABLE_ALPN, 0L);
|
|
res = curl_easy_perform(curl);
|
|
curl_easy_cleanup(curl);
|
|
}
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in 7.36.0
|
|
.SH RETURN VALUE
|
|
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|
|
.SH SEE ALSO
|
|
.BR CURLOPT_SSL_ENABLE_NPN (3),
|
|
.BR CURLOPT_SSL_OPTIONS (3)
|