http2: support passing options of http2.connect to net.connect

lib/internal/http2/core.js

@@ -2897,7 +2897,7 @@ function connect(authority, options, listener) {
   } else {
     switch (protocol) {
       case 'http:':
-        socket = net.connect(options.port || port, options.host || host);
+        socket = net.connect({ port, host, ...options });
         break;
       case 'https:':
         socket = tls.connect(port, host, initializeTLSOptions(options, host));

test/parallel/test-http2-client-port-80.js

@@ -11,7 +11,7 @@ const net = require('net');
 
 const connect = net.connect;
 net.connect = common.mustCall((...args) => {
-  assert.strictEqual(args[0], '80');
+  assert.strictEqual(args[0].port, '80');
   return connect(...args);
 });
 

test/parallel/test-http2-connect-options.js

@@ -0,0 +1,42 @@
+// Flags: --expose-internals
+'use strict';
+const common = require('../common');
+if (!common.hasCrypto)
+  common.skip('missing crypto');
+
+if (!common.hasMultiLocalhost())
+  common.skip('platform-specific test.');
+
+const http2 = require('http2');
+const assert = require('assert');
+
+const server = http2.createServer((req, res) => {
+  console.log(`Connect from: ${req.connection.remoteAddress}`);
+  assert.strictEqual(req.connection.remoteAddress, '127.0.0.2');
+
+  req.on('end', common.mustCall(() => {
+    res.writeHead(200, { 'Content-Type': 'text/plain' });
+    res.end(`You are from: ${req.connection.remoteAddress}`);
+  }));
+  req.resume();
+});
+
+server.listen(0, '127.0.0.1', common.mustCall(() => {
+  const options = { localAddress: '127.0.0.2' };
+
+  const client = http2.connect(
+    'http://localhost:' + server.address().port,
+    options
+  );
+  const req = client.request({
+    ':path': '/'
+  });
+  req.on('data', () => req.resume());
+  req.on('end', common.mustCall(function() {
+    client.close();
+    req.close();
+    server.close();
+    process.exit();
+  }));
+  req.end();
+}));