fix: Accept reqBasePath proxy option (#1051)

Author: mykola-mokhnach

lib/driver.ts

@@ -559,6 +559,7 @@ export class EspressoDriver extends AndroidDriver implements ExternalDriver<
       keyAlias: this.opts.keyAlias,
       keyPassword: this.opts.keyPassword,
       disableSuppressAccessibilityService: this.opts.disableSuppressAccessibilityService,
+      reqBasePath: this.basePath,
     });
     this.proxyReqRes = this.espresso.proxyReqRes.bind(this.espresso);
     this.proxyCommand = this.espresso.proxyCommand.bind(this.espresso);

lib/espresso-runner.js

@@ -62,21 +62,29 @@ class EspressoRunner {
   /**@type {boolean} */
   forceEspressoRebuild;
 
+  /**
+   *
+   * @param {import('@appium/types').AppiumLogger} log
+   * @param {import('@appium/types').StringRecord} opts
+   */
   constructor (log, opts = {}) {
-    for (let req of REQUIRED_PARAMS) {
+    for (const req of REQUIRED_PARAMS) {
       if (!opts || !util.hasValue(opts[req])) {
         throw new Error(`Option '${req}' is required!`);
       }
       this[req] = opts[req];
     }
     this.log = log;
-    this.jwproxy = new EspressoProxy({
+    const proxyOpts = {
       log,
       server: this.host,
       port: this.systemPort,
-      base: '',
       keepAlive: true,
-    });
+    };
+    if (opts.reqBasePath) {
+      proxyOpts.reqBasePath = opts.reqBasePath;
+    }
+    this.jwproxy = new EspressoProxy(proxyOpts);
     this.proxyReqRes = this.jwproxy.proxyReqRes.bind(this.jwproxy);
     this.proxyCommand = this.jwproxy.command.bind(this.jwproxy);
     this.jwproxy.instrumentationState = {