ceph/src/Beast/include/beast/websocket/impl/error.ipp

   1 //
   2 // Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
   3 //
   4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7
   8 #ifndef BEAST_WEBSOCKET_IMPL_ERROR_IPP
   9 #define BEAST_WEBSOCKET_IMPL_ERROR_IPP
  10
  11 namespace boost {
  12 namespace system {
  13 template<>
  14 struct is_error_code_enum<beast::websocket::error>
  15 {
  16     static bool const value = true;
  17 };
  18 } // system
  19 } // boost
  20
  21 namespace beast {
  22 namespace websocket {
  23 namespace detail {
  24
  25 class websocket_error_category : public error_category
  26 {
  27 public:
  28     const char*
  29     name() const noexcept override
  30     {
  31         return "websocket";
  32     }
  33
  34     std::string
  35     message(int ev) const override
  36     {
  37         switch(static_cast<error>(ev))
  38         {
  39         case error::closed: return "WebSocket connection closed normally";
  40         case error::failed: return "WebSocket connection failed due to a protocol violation";
  41         case error::handshake_failed: return "WebSocket Upgrade handshake failed";
  42         case error::keep_alive: return "WebSocket Upgrade handshake failed but connection is still open";
  43
  44         case error::response_malformed: return "malformed HTTP response";
  45         case error::response_failed: return "upgrade request failed";
  46         case error::response_denied: return "upgrade request denied";
  47         case error::request_malformed: return "malformed HTTP request";
  48         case error::request_invalid: return "upgrade request invalid";
  49         case error::request_denied: return "upgrade request denied";
  50         default:
  51             return "websocket error";
  52         }
  53     }
  54
  55     error_condition
  56     default_error_condition(int ev) const noexcept override
  57     {
  58         return error_condition(ev, *this);
  59     }
  60
  61     bool
  62     equivalent(int ev,
  63         error_condition const& condition
  64             ) const noexcept override
  65     {
  66         return condition.value() == ev &&
  67             &condition.category() == this;
  68     }
  69
  70     bool
  71     equivalent(error_code const& error, int ev) const noexcept override
  72     {
  73         return error.value() == ev &&
  74             &error.category() == this;
  75     }
  76 };
  77
  78 inline
  79 error_category const&
  80 get_error_category()
  81 {
  82     static detail::websocket_error_category const cat{};
  83     return cat;
  84 }
  85
  86 } // detail
  87
  88 inline
  89 error_code
  90 make_error_code(error e)
  91 {
  92     return error_code(
  93         static_cast<std::underlying_type<error>::type>(e),
  94             detail::get_error_category());
  95 }
  96
  97 } // websocket
  98 } // beast
  99
 100 #endif