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/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <string>
#include <system_error>
namespace transport {
namespace protocol {
/**
* @brief Get the default server error category.
* @return The default server error category instance.
*
* @warning The first call to this function is thread-safe only starting with
* C++11.
*/
const std::error_category& protocol_category();
/**
* The list of errors.
*/
enum class protocol_error {
success = 0,
signature_verification_failed,
integrity_verification_failed,
no_verifier_provided,
io_error,
max_retransmissions_error,
session_aborted,
};
/**
* @brief Create an error_code instance for the given error.
* @param error The error.
* @return The error_code instance.
*/
inline std::error_code make_error_code(protocol_error error) {
return std::error_code(static_cast<int>(error), protocol_category());
}
/**
* @brief Create an error_condition instance for the given error.
* @param error The error.
* @return The error_condition instance.
*/
inline std::error_condition make_error_condition(protocol_error error) {
return std::error_condition(static_cast<int>(error), protocol_category());
}
/**
* @brief A server error category.
*/
class protocol_category_impl : public std::error_category {
public:
/**
* @brief Get the name of the category.
* @return The name of the category.
*/
virtual const char* name() const throw();
/**
* @brief Get the error message for a given error.
* @param ev The error numeric value.
* @return The message associated to the error.
*/
virtual std::string message(int ev) const;
};
} // namespace protocol
} // namespace transport
namespace std {
// namespace system {
template <>
struct is_error_code_enum<::transport::protocol::protocol_error>
: public std::true_type {};
// } // namespace system
} // namespace std
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