Merge branch 'fork/Maxime-J/fix-unix-socket' into develop

# Conflicts:
#	test/integration/test-auth-plugin.js

Author: rusher

lib/cmd/handshake/auth/caching-sha2-password-auth.js

@@ -1,5 +1,5 @@
 //  SPDX-License-Identifier: LGPL-2.1-or-later
-//  Copyright (c) 2015-2024 MariaDB Corporation Ab
+//  Copyright (c) 2015-2025 MariaDB Corporation Ab
 
 import PluginAuth from './plugin-auth.js';
 import fs from 'node:fs';
@@ -27,6 +27,10 @@ class CachingSha2PasswordAuth extends PluginAuth {
     this.state = State.INIT;
   }
 
+  isSecureConnection() {
+    return this.cmdParam.opts.ssl || (this.cmdParam.opts.socketPath && process.platform !== 'win32');
+  }
+
   start(out, opts, info) {
     this.exchange(this.pluginData, out, opts, info);
     this.onPacketReceive = this.response;
@@ -57,8 +61,8 @@ class CachingSha2PasswordAuth extends PluginAuth {
             return;
 
           case 0x04:
-            if (opts.ssl) {
-              // using SSL, so sending password in clear
+            if (this.isSecureConnection()) {
+              // Secure connection, sending password in clear
               out.startPacket(this);
               out.writeString(opts.password);
               out.writeInt8(0);