Allow listening on multiple interfaces

src/config.hpp

@@ -3,19 +3,40 @@
 #include <chrono>
 #include <optional>
 #include <string>
+#include <vector>
 
 namespace weaseldb {
 
+/**
+ * @brief Configuration for a single network interface to listen on.
+ */
+struct ListenInterface {
+  enum class Type { TCP, Unix };
+
+  Type type;
+  /// For TCP: IP address to bind to (e.g., "127.0.0.1", "0.0.0.0")
+  std::string address;
+  /// For TCP: port number
+  int port = 0;
+  /// For Unix: socket file path
+  std::string path;
+
+  // Factory methods for cleaner config creation
+  static ListenInterface tcp(const std::string &addr, int port_num) {
+    return {Type::TCP, addr, port_num, ""};
+  }
+
+  static ListenInterface unix_socket(const std::string &socket_path) {
+    return {Type::Unix, "", 0, socket_path};
+  }
+};
+
 /**
  * @brief Configuration settings for the WeaselDB server component.
  */
 struct ServerConfig {
-  /// IP address to bind the server to (default: localhost)
-  std::string bind_address = "127.0.0.1";
-  /// TCP port number for the server to listen on
-  int port = 8080;
-  /// Unix socket path (if specified, takes precedence over TCP)
-  std::string unix_socket_path;
+  /// Network interfaces to listen on (TCP and/or Unix sockets)
+  std::vector<ListenInterface> interfaces;
   /// Maximum size in bytes for incoming HTTP requests (default: 1MB)
   int64_t max_request_size_bytes = 1024 * 1024;
   /// Number of I/O threads for handling connections and network events