feat: better errors when server fails

packages/core/utils/hostname.js

@@ -0,0 +1,17 @@
+export function extractHostname(url) {
+  var hostname;
+  //find & remove protocol (http, ftp, etc.) and get hostname
+
+  if (url.indexOf("//") > -1) {
+    hostname = url.split("/")[2];
+  } else {
+    hostname = url.split("/")[0];
+  }
+
+  //find & remove port number
+  // hostname = hostname.split(":")[0];
+  //find & remove "?"
+  hostname = hostname.split("?")[0];
+
+  return hostname;
+}