add example websocket C++ server snake which supports basic cobra ops (publish and subscribe without stream sql

ws/snake/IXAppConfig.cpp

@@ -0,0 +1,52 @@
+/*
+ *  IXSnakeProtocol.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXSnakeProtocol.h"
+#include "IXAppConfig.h"
+#include <iostream>
+#include <ixcrypto/IXUuid.h>
+
+namespace snake
+{
+    bool isAppKeyValid(
+        const AppConfig& appConfig,
+        std::string appkey)
+    {
+        return appConfig.apps.count(appkey) != 0;
+    }
+
+    std::string getRoleSecret(
+        const AppConfig& appConfig,
+        std::string appkey,
+        std::string role)
+    {
+        if (!isAppKeyValid(appConfig, appkey))
+        {
+            std::cerr << "Missing appkey " << appkey << std::endl;
+            return std::string();
+        }
+
+        auto roles = appConfig.apps[appkey]["roles"];
+        auto channel = roles[role]["secret"];
+        return channel;
+    }
+
+    std::string generateNonce()
+    {
+        return ix::uuid4();
+    }
+
+    void dumpConfig(const AppConfig& appConfig)
+    {
+        for (auto&& host : appConfig.redisHosts)
+        {
+            std::cout << "redis host: " << host << std::endl;
+        }
+
+        std::cout << "redis password: " << appConfig.redisPassword << std::endl;
+        std::cout << "redis port: " << appConfig.redisPort << std::endl;
+    }
+}