implement https://github.com/peers/peerjs-server/pull/67

config/schema.js

@@ -26,6 +26,13 @@ module.exports = convict({
     default: 'dev',
     env: 'NODE_ENV'
   },
+  host: {
+    doc: 'The host to bind.',
+    format: '*',
+    default: '0.0.0.0',
+    env: 'HOST',
+    arg: 'host'
+  },
   port: {
     doc: 'The port to bind.',
     format: 'port',

src/index.js

@@ -17,7 +17,6 @@ process.on('uncaughtException', (e) => {
 
 // parse config
 let path = config.get('path');
-const port = config.get('port');
 
 if (path[0] !== '/') {
   path = '/' + path;
@@ -76,7 +75,10 @@ wss.on('error', error => {
   logger.error(error);
 });
 
-server.listen(port, () => {
+const port = config.get('port');
+const host = config.get('host');
+
+server.listen(port, host, () => {
   const host = server.address().address;
   const port = server.address().port;