added retrotor option in global .pri, and TorControl code

retroshare-gui/src/TorControl/TorSocket.h

@@ -0,0 +1,97 @@
+/* Ricochet - https://ricochet.im/
+ * Copyright (C) 2014, John Brooks <john.brooks@dereferenced.net>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *    * Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following disclaimer
+ *      in the documentation and/or other materials provided with the
+ *      distribution.
+ *
+ *    * Neither the names of the copyright owners nor the names of its
+ *      contributors may be used to endorse or promote products derived from
+ *      this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TORSOCKET_H
+#define TORSOCKET_H
+
+#include <QTcpSocket>
+#include <QTimer>
+
+namespace Tor {
+
+/* Specialized QTcpSocket which makes connections over the SOCKS proxy
+ * from a TorControl instance, automatically attempts reconnections, and
+ * reacts to Tor's connectivity state.
+ *
+ * Use normal QTcpSocket/QAbstractSocket API. When a connection fails, it
+ * will be retried automatically after the correct interval and when
+ * connectivity is available.
+ *
+ * To fully disconnect, destroy the object, or call
+ * setReconnectEnabled(false) and disconnect the socket with
+ * disconnectFromHost or abort.
+ *
+ * The caller is responsible for resetting the attempt counter if a
+ * connection was successful and reconnection will be used again.
+ */
+class TorSocket : public QTcpSocket
+{
+    Q_OBJECT
+
+public:
+    explicit TorSocket(QObject *parent = 0);
+    virtual ~TorSocket();
+
+    bool reconnectEnabled() const { return m_reconnectEnabled; }
+    void setReconnectEnabled(bool enabled);
+    int maxAttemptInterval() { return m_maxInterval; }
+    void setMaxAttemptInterval(int interval);
+    void resetAttempts();
+
+    virtual void connectToHost(const QString &hostName, quint16 port, OpenMode openMode = ReadWrite, NetworkLayerProtocol protocol = AnyIPProtocol);
+    virtual void connectToHost(const QHostAddress &address, quint16 port, OpenMode openMode = ReadWrite);
+
+    QString hostName() const { return m_host; }
+    quint16 port() const { return m_port; }
+
+protected:
+    virtual int reconnectInterval();
+
+private slots:
+    void reconnect();
+    void connectivityChanged();
+    void onFailed();
+
+private:
+    QString m_host;
+    quint16 m_port;
+    QTimer m_connectTimer;
+    bool m_reconnectEnabled;
+    int m_maxInterval;
+    int m_connectAttempts;
+
+    using QAbstractSocket::connectToHost;
+};
+
+}
+
+#endif