Here is a list of all documented namespace enums with links to the namespaces they belong to:

• processor_errors : websocketpp::processor::error
• value : websocketpp::error, websocketpp::extensions::permessage_deflate::error, websocketpp::http::error, websocketpp::http::status_code, websocketpp::transport::asio::error, websocketpp::transport::asio::socket::error, websocketpp::transport::debug::error, websocketpp::transport::error, websocketpp::transport::iostream::error, websocketpp::transport::stub::error