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diff --git a/qafbwebsocketclient.h b/qafbwebsocketclient.h
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+/*
+ * Copyright (C) 2018 Iot.Bzh
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef QAFBWEBSOCKETCLIENT_H
+#define QAFBWEBSOCKETCLIENT_H
+
+#include <QObject>
+#include <QWebSocket>
+#include <QJsonValue>
+#include <functional>
+
+/*!
+ * \brief A WebSocket client to an Application Framework Binder.
+ */
+class QAfbWebsocketClient
+    : public QObject
+{
+    Q_OBJECT
+
+public:
+    using closure_t = std::function<void(bool, const QJsonValue&)>;
+
+    explicit QAfbWebsocketClient(QObject* parent = nullptr);
+
+    QAbstractSocket::SocketError error() const;
+    QString errorString() const;
+    bool isValid() const;
+
+    void call(const QString& api, const QString& verb, const QJsonValue& arg = QJsonValue(), closure_t closure = nullptr);
+
+public slots:
+    void open(const QUrl& u);
+    void close();
+    void sendTextMessage(QString msg);
+
+private slots:
+    void onSocketConnected();
+    void onSocketDisconnected();
+    void onSocketError(QAbstractSocket::SocketError e);
+    void onSocketTextReceived(QString msg);
+
+signals:
+    void connected();
+    void disconnected();
+    void error(QAbstractSocket::SocketError);
+    void textReceived(QString msg);
+    void textSent(QString msg);
+    void event(QString eventName, const QJsonValue& data);
+
+private:
+    int m_nextCallId;
+    QWebSocket m_socket;
+    QMap<QString, closure_t> m_closures;
+};
+
+#endif // QAFBWEBSOCKETCLIENT_H