#include <curl/curl.h>
#define CURLALTSVC_IMMEDIATELY (1<<0)
-#define CURLALTSVC_ALTUSED (1<<1)
#define CURLALTSVC_READONLYFILE (1<<2)
#define CURLALTSVC_H1 (1<<3)
#define CURLALTSVC_H2 (1<<4)
Setting any bit will enable the alt-svc engine.
.IP "CURLALTSVC_IMMEDIATELY"
If an Alt-Svc: header is received, this instructs libcurl to switch to one of
-those alternatives asap rather than to save it and use for the next request.
-.IP "CURLALTSVC_ALTUSED"
-Issue the Alt-Used: header in all requests that have been redirected by
-alt-svc.
+those alternatives asap rather than to save it and use for the next
+request. (Not currently supported).
.IP "CURLALTSVC_READONLYFILE"
Do not write the alt-svc cache back to the file specified with
\fICURLOPT_ALTSVC(3)\fP even if it gets updated. By default a file specified