Varnish sticky session (new)

sticky.vtc

varnishtest "Test cookie vmod"

server s1 {
       rxreq
       txresp -hdr "server: s1" -hdr "set-cookie: id=123;"

       rxreq
       txresp -hdr "server: s1"

       rxreq
       txresp -hdr "server: s1"

} -start

server s2 {
       rxreq
       txresp -hdr "server: s2" -hdr "set-cookie: id=456;"

       rxreq
       txresp -hdr "server: s2"

       rxreq
       txresp -hdr "server: s2"
} -start

varnish v1 -vcl+backend {
	import cookie from "${modules_builddir}/.libs/libvmod_cookie.so";
	import directors from "${topbuild}/lib/libvmod_directors/.libs/libvmod_directors.so";

	sub vcl_recv {
		cookie.parse(req.http.cookie);
		if (!cookie.get("id")) {
			if (req.url == "/") {
				cookie.set("id", "s1");
			} else {
				cookie.set("id", "s2");
			}
		}
		set req.http.server = cookie.get("id");

		if (req.http.server == "s1") {
			set req.backend_hint = s1;
		} else if (req.http.server == "s2") {
			set req.backend_hint = s2;
		}

		return (pass);
	}

	sub vcl_deliver {
		cookie.parse(resp.http.set-cookie);
		cookie.set("id", req.http.server);
		set resp.http.set-cookie = cookie.get_string();
	}
} -start

client c1 {
	txreq -url "/"
	rxresp
	expect resp.http.set-cookie == "id=s1;"
	expect resp.http.server == "s1"

	txreq -url "/index.html"
	rxresp
	expect resp.http.set-cookie == "id=s2;"
	expect resp.http.server == "s2"

	txreq -hdr "cookie: id=s2;"
	rxresp
	expect resp.http.server == "s2"

	txreq -hdr "cookie: id=s1;"
	rxresp
	expect resp.http.server == "s1"

	txreq -hdr "cookie: id=s1;"
	rxresp
	expect resp.http.server == "s1"

	txreq -hdr "cookie: id=s2;"
	rxresp
	expect resp.http.server == "s2"
} -run