wait for tcp port available (win32)

lib/server-starter.js

@@ -64,12 +64,14 @@ class Server extends EventEmitter {
    * @param {object} [options] - Optional settings
    * @param {boolean} [options.stdout=false] - Forward server output from STDOUT to STDOUT
    * @param {boolean} [options.stderr=true] - Forward server output from STDERR to STDERR
+   * @param {number} [options.win32Timeout=30000] - (Windows only) Max time to wait for server ready, in mS
    * @returns {Promise}
    */
   launch (cmd, args, options = {}) {
     if (typeof this._process !== 'undefined') throw new Error('Server already launched');
     const stdout = typeof options.stdout !== 'undefined' ? options.stdout : false;
     const stderr = typeof options.stderr !== 'undefined' ? options.stderr : true;
+    const win32Timeout = typeof options.win32Timeout !== 'undefined' ? options.win32Timeout : 30000;
 
     const proc = (this._process = spawn(cmd, args, { stdio: ['pipe', 'pipe', 'pipe', this._fd] }));
     this._srv.close();
@@ -90,7 +92,23 @@ class Server extends EventEmitter {
     });
 
     // Should be resolved by the "spawn" event, but that is only supported in Node 15+
-    return Promise.resolve;
+    if (process.platform !== 'win32') return Promise.resolve;
+    return new Promise((resolve) => {
+      const retryTime = 60;
+      const now = new Date();
+      const timeToStop = new Date(now.getTime() + win32Timeout);
+      const port = this.port;
+      (function loop () {
+        const connection = net.connect(port, resolve);
+        connection.on('error', err => {
+          if (err.code === 'ECONNREFUSED') {
+            if (new Date() < timeToStop) {
+              setTimeout(loop, retryTime);
+            }
+          }
+        });
+      })();
+    });
   }
 
   /**