--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qmlfrontend/net_session.h	Sat May 11 22:39:55 2019 +0200
@@ -0,0 +1,70 @@
+#ifndef NET_SESSION_H
+#define NET_SESSION_H
+
+#include <QSharedPointer>
+#include <QSslSocket>
+#include <QStringList>
+#include <QUrl>
+
+class NetSession : public QObject {
+  Q_OBJECT
+
+  // clang-format off
+  Q_PROPERTY(QUrl url READ url WRITE setUrl NOTIFY urlChanged)
+  Q_PROPERTY(QAbstractSocket::SocketState state READ state NOTIFY stateChanged)
+  Q_PROPERTY(QString nickname READ nickname WRITE setNickname NOTIFY nicknameChanged)
+  Q_PROPERTY(QString password READ password WRITE setPassword NOTIFY passwordChanged)
+  Q_PROPERTY(SessionState sessionState READ sessionState NOTIFY sessionStateChanged)
+  // clang-format on
+
+ public:
+  enum SessionState { NotConnected, Login, Lobby, Room, Game };
+  Q_ENUMS(SessionState)
+
+  explicit NetSession(QObject *parent = nullptr);
+
+  QUrl url() const;
+  QAbstractSocket::SocketState state() const;
+
+  Q_INVOKABLE void open();
+
+  QString nickname() const;
+  QString password() const;
+  SessionState sessionState() const;
+
+ public slots:
+  void setUrl(const QUrl &url);
+  void setNickname(const QString &nickname);
+  void setPassword(const QString &password);
+  void close();
+
+ signals:
+  void urlChanged(const QUrl url);
+  void stateChanged(QAbstractSocket::SocketState state);
+  void nicknameChanged(const QString &nickname);
+  void passwordChanged(const QString &password);
+  void sessionStateChanged(SessionState sessionState);
+
+ private slots:
+  void onReadyRead();
+  void parseNetMessage(const QStringList &message);
+  void handleConnected(const QStringList &parameters);
+  void handlePing(const QStringList &parameters);
+  void handleBye(const QStringList &parameters);
+  void handleUnknownCommand(const QStringList &parameters);
+  void send(const QString &message);
+  void send(const QString &message, const QString &param);
+  void send(const QString &message, const QStringList &parameters);
+  void send(const QStringList &message);
+  void setSessionState(SessionState sessionState);
+
+ private:
+  QUrl m_url;
+  QSharedPointer<QTcpSocket> m_socket;
+  QString m_nickname;
+  QString m_password;
+  QStringList m_buffer;
+  SessionState m_sessionState;
+};
+
+#endif  // NET_SESSION_H