the hosts.token() method may not be called in vcl_init

src/tests/token.vtc

@@ -154,6 +154,19 @@ client c1 {
 } -run
 
 # Usage
+varnish v1 -errvcl {h.token() may not be called in vcl_init} {
+	import hoailona from "${vmod_topbuild}/src/.libs/libvmod_hoailona.so";
+	backend b { .host = "${bad_ip}"; }
+
+	sub vcl_init {
+		new p = hoailona.policy(OPEN, 1h);
+		new h = hoailona.hosts();
+		if (h.token() == "foo") {
+			return(fail);
+		}
+	}
+}
+
 varnish v1 -vcl {
 	import hoailona from "${vmod_topbuild}/src/.libs/libvmod_hoailona.so";
 	import std;

src/vmod_hoailona.c

@@ -626,6 +626,11 @@ vmod_hosts_token(VRT_CTX, struct vmod_hoailona_hosts *hosts,
 	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
 	CHECK_OBJ_NOTNULL(ctx->ws, WS_MAGIC);
 	CHECK_OBJ_NOTNULL(hosts, VMOD_HOAILONA_HOSTS_MAGIC);
+	if (INIT(ctx)) {
+		VERR(ctx, "%s.token() may not be called in vcl_init",
+		     hosts->vcl_name);
+		return NULL;
+	}
 	if (ttl < 0) {
 		VERR(ctx, "ttl must not be < 0 in %s.token(): %f",
 		     hosts->vcl_name, ttl);