make port/host configuable

lib/appium-for-mac.js

@@ -12,9 +12,9 @@ const REQ_A4M_APP_PATH = path.resolve('/Applications', 'AppiumForMac.app');
 const a4mLog = logger.getLogger('Appium4Mac');
 
 class AppiumForMac {
-  constructor () {
-    this.proxyHost = DEFAULT_A4M_HOST;
-    this.proxyPort = DEFAULT_A4M_PORT;
+  constructor (opts = {}) {
+    this.proxyHost = opts.a4mHost || DEFAULT_A4M_HOST;
+    this.proxyPort = opts.a4mPort || DEFAULT_A4M_PORT;
     this.proc = null;
     this.jwproxy = new JWProxy({server: this.proxyHost, port: this.proxyPort});
   }

lib/driver.js

@@ -40,7 +40,7 @@ class MacDriver extends BaseDriver {
   }
 
   async startAppiumForMacSession () {
-    this.a4mDriver = new AppiumForMac();
+    this.a4mDriver = new AppiumForMac(this.ops);
 
     await this.a4mDriver.start();
     await this.a4mDriver.startSession(this.caps);