fix(cli-framework/network): check 'localhost' resolved.

Author: rdlabo

packages/@ionic/cli-framework/src/utils/network.ts

@@ -2,6 +2,7 @@ import * as net from 'net';
 import * as os from 'os';
 
 import * as Debug from 'debug';
+import * as dns from 'dns';
 
 import { NetworkInterface } from '../definitions';
 
@@ -77,15 +78,21 @@ export async function isPortAvailable(port: number, host?: string): Promise<bool
 export async function isHostConnectable(host: string, port: number, { timeout }: { timeout?: number; } = {}): Promise<boolean> {
   const tryConnect = async () => {
     return new Promise<boolean>((resolve, reject) => {
-      const sock = net.connect({ port, host });
 
-      sock.on('connect', () => {
-        sock.destroy();
-        resolve(true);
-      });
+      dns.lookup(host, (error, address) => {
+        if (host === 'localhost' && typeof address === 'undefined') {
+          host = '0.0.0.0';
+        }
+        const sock = net.connect({ port, host });
 
-      sock.on('error', err => {
-        reject(err);
+        sock.on('connect', () => {
+          sock.destroy();
+          resolve(true);
+        });
+
+        sock.on('error', err => {
+          reject(err);
+        });
       });
     });
   };