tcp/udp 추가, todo:iocp openssl 지원하도록 업데이트하기

include/utils/snowflake.h

@@ -0,0 +1,32 @@
+#pragma once
+#include <cstdint>
+
+namespace utils {
+
+struct Snowflake {
+  union {
+    struct {
+      std::uint64_t timestamp : 42;
+      std::uint64_t instance : 10;
+      std::uint64_t sequence : 12;
+    };
+    std::uint64_t snowflake;
+  };
+
+  bool operator==(const Snowflake& other) const {
+    return snowflake == other.snowflake;
+  }
+};
+
+Snowflake GenerateID();
+
+}  // namespace Chattr
+
+namespace std {
+template <>
+struct hash<utils::Snowflake> {
+  std::size_t operator()(const utils::Snowflake& k) const {
+    return std::hash<std::uint64_t>{}(k.snowflake);
+  }
+};
+}  // namespace std