Feature/ws cli (#15)

* New command line tool for transfering files / still very beta.

* add readme

* use cli11 for argument parsing

* json -> msgpack

* stop using base64 and use binary which can be stored in message pack

ws/ws.cpp

@@ -0,0 +1,68 @@
+/*
+ *  ws.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017-2018 Machine Zone, Inc. All rights reserved.
+ */
+
+// 
+// Main drive for websocket utilities
+//
+
+#include <string>
+#include <sstream>
+#include <iostream>
+
+#include <cli11/CLI11.hpp>
+
+namespace ix
+{
+    int ws_receive_main(const std::string& url,
+                        bool enablePerMessageDeflate);
+
+    extern int ws_transfer_main(int port);
+
+    extern int ws_send_main(const std::string& url,
+                            const std::string& path);
+}
+
+int main(int argc, char** argv)
+{
+    CLI::App app{"ws is a websocket tool"};
+    app.require_subcommand();
+
+    std::string url;
+    std::string path;
+    int port = 8080;
+
+    CLI::App* sendApp = app.add_subcommand("send", "Send a file");
+    sendApp->add_option("url", url, "Connection url")->required();
+    sendApp->add_option("path", path, "Path to the file to send")->required();
+
+    CLI::App* receiveApp = app.add_subcommand("receive", "Receive a file");
+    receiveApp->add_option("url", url, "Connection url")->required();
+
+    CLI::App* transferApp = app.add_subcommand("transfer", "Broadcasting server");
+    transferApp->add_option("--port", port, "Connection url");
+
+    CLI11_PARSE(app, argc, argv);
+
+    if (app.got_subcommand("transfer"))
+    {
+        return ix::ws_transfer_main(port);
+    }
+    else if (app.got_subcommand("send"))
+    {
+        return ix::ws_send_main(url, path);
+    }
+    else if (app.got_subcommand("receive"))
+    {
+        bool enablePerMessageDeflate = false;
+        return ix::ws_receive_main(url, enablePerMessageDeflate);
+    }
+    else
+    {
+        assert(false);
+    }
+
+    return 1;
+}