First part of an RPC mechanism for container <-> host communication

Mostly based on the protobuf based implementation from Mir.

android/service/local_socket_connection.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2016 Simon Fels <morphis@gravedo.de>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef ANBOX_ANDROID_LOCAL_SOCKET_CONNECTION_H_
+#define ANBOX_ANDROID_LOCAL_SOCKET_CONNECTION_H_
+
+#include <string>
+#include <vector>
+
+#include "anbox/common/fd.h"
+#include "anbox/network/message_sender.h"
+
+namespace anbox {
+namespace android {
+class LocalSocketConnection : public network::MessageSender {
+public:
+    LocalSocketConnection(const std::string &path);
+    ~LocalSocketConnection();
+
+    ssize_t read_all(std::uint8_t *buffer, const size_t &size);
+    void send(char const* data, size_t length) override;
+
+private:
+    Fd fd_;
+};
+} // namespace android
+} // namespace anbox
+
+#endif