fixed chat_message: now enum class message has underlying type of char

chat_messages.hpp

@@ -1,15 +1,16 @@
 #pragma once
 #include <string>
 #include <type_traits>
+#include <ostream>
 
 
 
-enum class message
+enum class message : char
 {
     HELLO = 1, NEPTUN = 2, PASSW = 3,
     SERVER_DIRECTION = 4, MESSAGE = 5,
     PING = 6, PONG = 7, BYE = 8,
-    LOGIN = 9, LOGOUT = 10
+    LOGIN = 9, LOGOUT = 10, TERM = 0x7f
 };
 
 
@@ -26,5 +27,9 @@ public:
     :_header(static_cast<message>(header_integral)), _content(content) {}
 
     std::string get() const
-    { return std::to_string(static_cast<std::underlying_type<message>::type>(_header)) + _content; }
+    { return static_cast<char>(_header) + _content + static_cast<char>(message::TERM); }
 };
+
+
+std::ostream& operator<<(std::ostream& os, const chat_message& msg)
+{ return os << msg.get(); }