Merge pull request emailjs#75 from warp/fix/send-sni-for-node-12-support

Send SNI for node 12 support

Author: felixhammerl

src/node-socket.js

@@ -20,7 +20,11 @@ export default class TCPSocket {
     }
 
     this._socket = this.ssl
-      ? tls.connect(this.port, this.host, { }, () => this._emit('open'))
+      ? tls.connect({
+        port: this.port,
+        host: this.host,
+        servername: this.host // SNI
+      }, () => this._emit('open'))
       : net.connect(this.port, this.host, () => this._emit('open'))
 
     // add all event listeners to the new socket