fix: not fetching properly

src/WorldStateCache.js

@@ -1,5 +1,8 @@
 'use strict';
 
+const https = require('https');
+const http = require('http');
+
 const fetch = require('node-fetch');
 
 const EventEmitter = require('events');
@@ -36,7 +39,7 @@ class WorldStateCache extends EventEmitter {
 
   async update() {
     try {
-      const data = await fetch(this.url).then(res => res.json());
+      const data = await this.httpGet();
       this.lastUpdated = Date.now();
       delete this.currentData;
       this.currentData = JSON.parse(data);
@@ -49,6 +52,21 @@ class WorldStateCache extends EventEmitter {
     }
     return this.updating;
   }
+
+  httpGet() {
+    return new Promise((resolve, reject) => {
+      const protocol = this.url.startsWith('https') ? https : http;
+      const request = protocol.get(this.url, (response) => {
+        if (response.statusCode < 200 || response.statusCode > 299) {
+          reject(new Error(`Failed to load page ${this.url}, status code: ${response.statusCode}`));
+        }
+        const body = [];
+        response.on('data', chunk => body.push(chunk));
+        response.on('end', () => resolve(body.join('')));
+      });
+      request.on('error', err => reject(err));
+    });
+  }
 }
 
 module.exports = WorldStateCache;