http2: add initial support for originSet

Add new properties to `Http2Session` to identify alpnProtocol,
and indicator about whether the session is TLS or not, and
initial support for origin set (preparinng for `ORIGIN` frame
support and the client-side `Pool` implementation.

The `originSet` is the set of origins for which an `Http2Session`
may be considered authoritative. Per the `ORIGIN` frame spec,
the originSet is only valid on TLS connections, so this is only
exposed when using a `TLSSocket`.

PR-URL: https://github.com/nodejs/node/pull/17935
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Sebastiaan Deckers <sebdeckers83@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/test/parallel/test-http2-create-client-secure-session.js b/test/parallel/test-http2-create-client-secure-session.js
index 811ef772d5..6120a58602 100644
--- a/test/parallel/test-http2-create-client-secure-session.js
+++ b/test/parallel/test-http2-create-client-secure-session.js
@@ -19,6 +19,14 @@ function loadKey(keyname) {
 
 function onStream(stream, headers) {
   const socket = stream.session[kSocket];
+
+  assert(stream.session.encrypted);
+  assert(stream.session.alpnProtocol, 'h2');
+  const originSet = stream.session.originSet;
+  assert(Array.isArray(originSet));
+  assert.strictEqual(originSet[0],
+                     `https://${socket.servername}:${socket.remotePort}`);
+
   assert(headers[':authority'].startsWith(socket.servername));
   stream.respond({ 'content-type': 'application/json' });
   stream.end(JSON.stringify({
@@ -39,6 +47,17 @@ function verifySecureSession(key, cert, ca, opts) {
     assert.strictEqual(client.socket.listenerCount('secureConnect'), 1);
     const req = client.request();
 
+    client.on('connect', common.mustCall(() => {
+      assert(client.encrypted);
+      assert.strictEqual(client.alpnProtocol, 'h2');
+      const originSet = client.originSet;
+      assert(Array.isArray(originSet));
+      assert.strictEqual(originSet.length, 1);
+      assert.strictEqual(
+        originSet[0],
+        `https://${opts.servername || 'localhost'}:${server.address().port}`);
+    }));
+
     req.on('response', common.mustCall((headers) => {
       assert.strictEqual(headers[':status'], 200);
       assert.strictEqual(headers['content-type'], 'application/json');