adding session attributes informations (_server_host, _os, _client_host)

src/cmd/handshake/client-handshake-response.js

@@ -3,6 +3,8 @@
 const Capabilities = require("../../const/capabilities");
 const Iconv = require("iconv-lite");
 const NativePasswordAuth = require("./auth/native_password_auth");
+const driverVersion = require('../../../package.json').version;
+const os = require("os");
 
 /**
  * Send Handshake response packet
@@ -82,9 +84,17 @@ module.exports.send = function send(cmd, out, opts, pluginName, info) {
     writeParam(out, "_client_name", encoding);
     writeParam(out, "MariaDB connector/Node", encoding);
 
-    let packageJson = require("../../../package.json");
     writeParam(out, "_client_version", encoding);
-    writeParam(out, packageJson.version, encoding);
+    writeParam(out, driverVersion, encoding);
+
+    writeParam(out, "_server_host", encoding);
+    writeParam(out, cmd.getSocket().address().address, encoding);
+
+    writeParam(out, "_os", encoding);
+    writeParam(out, process.platform, encoding);
+
+    writeParam(out, "_client_host", encoding);
+    writeParam(out, os.hostname(), encoding);
 
     writeParam(out, "_node_version", encoding);
     writeParam(out, process.versions.node, encoding);

src/cmd/handshake/handshake.js

@@ -13,12 +13,13 @@ const Capabilities = require("../../const/capabilities");
  * see https://mariadb.com/kb/en/library/1-connecting-connecting/
  */
 class Handshake extends Command {
-  constructor(_events, _succeedAuthentication, _createSecureContext, _addCommand, callback) {
+  constructor(_events, _succeedAuthentication, _createSecureContext, _addCommand, callback, getSocket) {
     super(_events);
     this._succeedAuthentication = _succeedAuthentication;
     this._createSecureContext = _createSecureContext;
     this._addCommand = _addCommand;
     this.onResult = callback;
+    this.getSocket = getSocket;
   }
 
   start(out, opts, info) {

src/connection.js

@@ -410,11 +410,16 @@ function Connection(options) {
         _connected = !err;
         _events.emit("connect", err);
         if (err) _fatalError(err, true);
-      }
+      },
+      _getSocket
     );
     _addCommand(handshake, false);
   };
 
+  const _getSocket = () => {
+    return _socket;
+  };
+
   /**
    * Initialize socket and associate events.
    * @private