diff --git a/3rdparty/o2/src/o2replyserver.h b/3rdparty/o2/src/o2replyserver.h
new file mode 100644
index 0000000000000000000000000000000000000000..19b9932df351356849714c78062346b83185b669
--- /dev/null
+++ b/3rdparty/o2/src/o2replyserver.h
@@ -0,0 +1,26 @@
+#ifndef O2REPLYSERVER_H
+#define O2REPLYSERVER_H
+
+#include <QTcpServer>
+#include <QMap>
+#include <QByteArray>
+#include <QString>
+
+/// HTTP server to process authentication response.
+class O2ReplyServer: public QTcpServer {
+    Q_OBJECT
+
+public:
+    explicit O2ReplyServer(QObject *parent = 0);
+    ~O2ReplyServer();
+
+signals:
+    void verificationReceived(QMap<QString, QString>);
+
+public slots:
+    void onIncomingConnection();
+    void onBytesReady();
+    QMap<QString, QString> parseQueryParams(QByteArray *data);
+};
+
+#endif // O2REPLYSERVER_H