make a class hierarchy for server code (IXWebSocketServer <- IXSocketServer)

ixwebsocket/IXSocketServer.h

@@ -0,0 +1,67 @@
+/*
+ *  IXSocketServer.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <utility> // pair
+#include <string>
+#include <set>
+#include <thread>
+#include <mutex>
+#include <functional>
+#include <memory>
+#include <condition_variable>
+
+namespace ix 
+{
+    class SocketServer {
+    public:
+        SocketServer(int port = SocketServer::kDefaultPort,
+                     const std::string& host = SocketServer::kDefaultHost,
+                     int backlog = SocketServer::kDefaultTcpBacklog,
+                     size_t maxConnections = SocketServer::kDefaultMaxConnections);
+        virtual ~SocketServer();
+        virtual void stop();
+
+        const static int kDefaultPort;
+        const static std::string kDefaultHost;
+        const static int kDefaultTcpBacklog;
+        const static size_t kDefaultMaxConnections;
+
+        void start();
+        std::pair<bool, std::string> listen();
+        void wait();
+
+    protected:
+
+        // Logging
+        void logError(const std::string& str);
+        void logInfo(const std::string& str);
+
+    private:
+        // Member variables
+        int _port;
+        std::string _host;
+        int _backlog;
+        size_t _maxConnections;
+
+        // socket for accepting connections
+        int _serverFd;
+
+        std::mutex _logMutex;
+
+        std::atomic<bool> _stop;
+        std::thread _thread;
+
+        std::condition_variable _conditionVariable;
+        std::mutex _conditionVariableMutex;
+
+        // Methods
+        void run();
+        virtual void handleConnection(int fd) = 0;
+        virtual size_t getConnectedClientsCount() = 0;
+    };
+}