http2: use the latest settings

Fixes: #29764

PR-URL: #29780
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

lib/internal/http2/core.js

@@ -518,6 +518,7 @@ function onSettings() {
     return;
   session[kUpdateTimer]();
   debugSessionObj(session, 'new settings received');
+  session[kRemoteSettings] = undefined;
   session.emit('remoteSettings', session.remoteSettings);
 }
 

test/parallel/test-http2-session-settings.js

@@ -38,6 +38,12 @@ server.on(
   })
 );
 
+server.on('session', (session) => {
+  session.settings({
+    maxConcurrentStreams: 2
+  });
+});
+
 server.listen(
   0,
   common.mustCall(() => {
@@ -57,11 +63,18 @@ server.listen(
         assert.strictEqual(settings.maxFrameSize, 16384);
       }, 2)
     );
+
+    let calledOnce = false;
     client.on(
       'remoteSettings',
       common.mustCall((settings) => {
         assert(settings);
-      })
+        assert.strictEqual(
+          settings.maxConcurrentStreams,
+          calledOnce ? 2 : (2 ** 32) - 1
+        );
+        calledOnce = true;
+      }, 2)
     );
 
     const headers = { ':path': '/' };