Pass SNI callback to TLS server

PR-URL: #412

Author: tshemsedinov

lib/server.js

@@ -174,10 +174,12 @@ class Server {
   }
 
   bind() {
-    const { options, application, console, balancer } = this;
-    const { host, port, protocol, timeouts, nagle = true, key, cert } = options;
+    const { application, console, balancer } = this;
+    const { host, port, protocol, timeouts, nagle = true } = this.options;
+    const { key, cert, SNICallback } = this.options;
     const proto = protocol === 'http' || balancer ? http : https;
-    this.httpServer = proto.createServer({ key, cert, noDelay: !nagle });
+    const options = { key, cert, noDelay: !nagle, SNICallback };
+    this.httpServer = proto.createServer(options);
 
     this.httpServer.on('listening', () => {
       console.info(`Listen port ${port}`);