https://bz.apache.org/bugzilla/show_bug.cgi?id=58231
--- Comment #8 from Luca Toscano <toscano.l...@gmail.com> ---
The following seems to remove the Vary: Host header combination from
mod_rewrite and <If> expression evaluation:
Index: modules/mappers/mod_rewrite.c
===================================================================
--- modules/mappers/mod_rewrite.c (revision 1808672)
+++ modules/mappers/mod_rewrite.c (working copy)
@@ -2035,7 +2035,10 @@
case 'S':
if (!strcmp(var, "HTTP_HOST")) {
- result = lookup_header("Host", ctx);
+ /* Skip the 'Vary: Host' header combination
+ * as indicated in rfc7231 section-7.1.4
+ */
+ result = apr_table_get(ctx->r->headers_in, "Host");
}
break;
Index: server/util_expr_eval.c
===================================================================
--- server/util_expr_eval.c (revision 1808672)
+++ server/util_expr_eval.c (working copy)
@@ -1606,7 +1606,12 @@
return "";
name = req_header_header_names[index];
- add_vary(ctx, name);
+ /* Skip the 'Vary: Host' header combination
+ * as indicated in rfc7231 section-7.1.4
+ */
+ if (strcmp(name, "Host")){
+ add_vary(ctx, name);
+ }
return apr_table_get(ctx->r->headers_in, name);
}
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