fix(#124): resolve all *.localhost to localhost, and fix ipv6 issue

packages/bruno-electron/src/ipc/network/axios-instance.js

@@ -1,5 +1,32 @@
+const URL = require('url');
+const Socket = require('net').Socket;
 const axios = require('axios');
 
+const getTld = (hostname) => {
+  if (!hostname) {
+    return '';
+  }
+
+  return hostname.substring(hostname.lastIndexOf('.') + 1);
+};
+
+const checkConnection = (host, port) =>
+  new Promise((resolve) => {
+    const socket = new Socket();
+
+    socket.once('connect', () => {
+      socket.end();
+      resolve(true);
+    });
+
+    socket.once('error', () => {
+      resolve(false);
+    });
+
+    // Try to connect to the host and port
+    socket.connect(port, host);
+  });
+
 /**
  * Function that configures axios with timing interceptors
  * Important to note here that the timings are not completely accurate.
@@ -10,7 +37,22 @@ function makeAxiosInstance() {
   /** @type {axios.AxiosInstance} */
   const instance = axios.create();
 
-  instance.interceptors.request.use((config) => {
+  instance.interceptors.request.use(async (config) => {
+    const url = URL.parse(config.url);
+
+    // Resolve all *.localhost to localhost and check if it should use IPv6 or IPv4
+    // RFC: 6761 section 6.3 (https://tools.ietf.org/html/rfc6761#section-6.3)
+    // @see https://github.com/usebruno/bruno/issues/124
+    if (getTld(url.hostname) === 'localhost') {
+      config.headers.Host = url.hostname; // Put original hostname in Host
+
+      const portNumber = Number(url.port) || (url.protocol.includes('https') ? 443 : 80);
+      const useIpv6 = await checkConnection('::1', portNumber);
+      url.hostname = useIpv6 ? '::1' : '127.0.0.1';
+      delete url.host; // Clear hostname cache
+      config.url = URL.format(url);
+    }
+
     config.headers['request-start-time'] = Date.now();
     return config;
   });