refactor: Refine generate certificate

lib/https/ca.js

@@ -40,13 +40,13 @@ function getMacAddress() {
 }
 
 function createCertificate(hostname) {
-  var cert = customPairs[hostname] 
+  var cert = customPairs[hostname]
     || wildcardPairs[hostname.slice(hostname.indexOf('.'))]
     || cachePairs[hostname];
   if (cert) {
     return cert;
   }
-  
+
   cert = createCert(pki.setRsaPublicKey(ROOT_KEY.n, ROOT_KEY.e),
 crypto.createHash('sha1')
 .update(hostname, 'binary')
@@ -58,6 +58,13 @@ crypto.createHash('sha1')
   }]);
 
   cert.setIssuer(ROOT_CRT.subject.attributes);
+  cert.setExtensions([ {
+    name: 'subjectAltName',
+    altNames: [{
+      type: 2,
+      value: hostname
+    }]
+  } ]);
   cert.sign(ROOT_KEY, forge.md.sha256.create());
   cert = cachePairs[hostname] = {
     key: pki.privateKeyToPem(ROOT_KEY),