[master] 189a598eb Move directors.hash::backend to STRANDS

[Dridi Boukelmoune]

commit 189a598ebf1e78436a95678d7255c4d399458b26
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Wed Jul 3 18:45:02 2019 +0200

    Move directors.hash::backend to STRANDS

diff --git a/lib/libvmod_directors/hash.c b/lib/libvmod_directors/hash.c
index a82e19fe3..897c5a567 100644
--- a/lib/libvmod_directors/hash.c
+++ b/lib/libvmod_directors/hash.c
@@ -108,29 +108,25 @@ vmod_hash_remove_backend(VRT_CTX,
 }
 
 VCL_BACKEND v_matchproto_()
-vmod_hash_backend(VRT_CTX, struct vmod_directors_hash *rr,
-    const char *arg, ...)
+vmod_hash_backend(VRT_CTX, struct vmod_directors_hash *rr, VCL_STRANDS s)
 {
 	struct VSHA256Context sha_ctx;
-	va_list ap;
 	const char *p;
 	unsigned char sha256[VSHA256_LEN];
 	VCL_BACKEND be;
 	double r;
+	int i;
 
 	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
 	CHECK_OBJ_ORNULL(ctx->bo, BUSYOBJ_MAGIC);
 
 	CHECK_OBJ_NOTNULL(rr, VMOD_DIRECTORS_HASH_MAGIC);
 	VSHA256_Init(&sha_ctx);
-	va_start(ap, arg);
-	p = arg;
-	while (p != vrt_magic_string_end) {
+	for (i = 0; i < s->n; i++) {
+		p = s->p[i];
 		if (p != NULL && *p != '\0')
 			VSHA256_Update(&sha_ctx, p, strlen(p));
-		p = va_arg(ap, const char *);
 	}
-	va_end(ap);
 	VSHA256_Final(sha256, &sha_ctx);
 
 	r = vbe32dec(sha256);
diff --git a/lib/libvmod_directors/vmod.vcc b/lib/libvmod_directors/vmod.vcc
index 5bb6837f9..bafab18d6 100644
--- a/lib/libvmod_directors/vmod.vcc
+++ b/lib/libvmod_directors/vmod.vcc
@@ -217,7 +217,7 @@ Remove a backend from the director.
 Example::
 	vdir.remove_backend(backend1);
 
-$Method BACKEND .backend(STRING_LIST)
+$Method BACKEND .backend(STRANDS)
 
 Pick a backend from the backend director.