some fix

app.js

@@ -8,7 +8,6 @@ var fs = require('fs');
 var zmrBot = require('./bot.js');
 
 var app = express();
-var port = process.env.PORT || 3000;
 var sslPath = '/etc/letsencrypt/live/sao.twilightparadox.com/';
 
 var options = {  
@@ -32,8 +31,6 @@ app.use(function (err, req, res, next) {
 
 var server = https.createServer(options, app);  
 var io = require('socket.io').listen(server);
-server.listen(443);
-
-app.listen(port, function () {
-  console.log('Slack bot listening on port ' + port);
+server.listen(443, function () {
+  console.log('start server. Listening for port 443')
 });

package.json

@@ -10,6 +10,7 @@
   "license": "ISC",
   "dependencies": {
     "body-parser": "^1.16.1",
-    "express": "^4.14.1"
+    "express": "^4.14.1",
+    "socket.io": "^1.7.3"
   }
 }

slackbot.service

@@ -2,11 +2,12 @@
 Description=slackbot 
 After=network.target
 [Service]
-ExecStart=/var/www/slackbot/app.js
+ExecStart=/usr/bin/node /var/www/slackbot/app.js
 Restart=always
-User=nobody
-Group=nobody
-Environment=PATH=/usr/bin:/usr/local/bin
+RestartSec=10
+#User=nobody
+#Group=nobody
+#Environment=PATH=/usr/bin:/usr/local/bin
 Environment=NODE_ENV=production
 WorkingDirectory=/var/www/slackbot
 [Install]