Handling Mongo connection errors and starting bcoin once the db connects

config/index.js

@@ -12,6 +12,8 @@ const config = {
     uri: 'mongodb://localhost/bitcore',
     options: {
       useMongoClient: true,
+      socketTimeoutMS: 0,
+      connectTimeoutMS: 0
     },
   },
   api: {

index.js

@@ -14,4 +14,6 @@ Api.listen(config.api.port, () => {
     'listening on port 3000');
 });
 
-node.start();
+db.connection.once('open', function() {
+  node.start();
+});

lib/db/index.js

@@ -1,3 +1,10 @@
 const mongoose = require('mongoose');
+const logger   = require('../logger');
+
+mongoose.connection.on('error', (err) => {
+  logger.log('error',
+    `Failed to connect to Mongo Database
+    ${err}`);
+});
 
 module.exports = mongoose;