Here comes he RunT!

Sources/connection_pool.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include <string>
+#include <unordered_map>
+#include <queue>
+#include <mutex>
+#include <chrono>
+
+#ifdef _WIN32
+#include <winsock2.h>
+typedef SOCKET socket_t;
+#else
+#include <sys/socket.h>
+typedef int socket_t;
+#endif
+
+class ConnectionPool {
+private:
+    struct PooledConnection {
+        socket_t socket;
+        std::chrono::steady_clock::time_point last_used;
+        bool is_ssl;
+    };
+
+    std::unordered_map<std::string, std::queue<PooledConnection>> pool_;
+    mutable std::mutex pool_mutex_;
+    static constexpr int MAX_CONNECTIONS_PER_HOST = 4;
+    static constexpr int CONNECTION_TIMEOUT_SECONDS = 30;
+
+public:
+    ConnectionPool() = default;
+    ~ConnectionPool();
+
+    socket_t acquire_connection(const std::string& host, int port, bool is_ssl = false);
+    
+    // returns connection to pool for reuse
+    void release_connection(const std::string& host, int port, socket_t socket, bool is_ssl = false);
+    
+    void cleanup_expired();
+    
+    size_t get_pool_size() const;
+
+private:
+    std::string make_key(const std::string& host, int port, bool is_ssl) const;
+    bool is_socket_alive(socket_t socket) const;
+};
+
+extern ConnectionPool g_connection_pool;