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- //
- // error.hpp
- // ~~~~~~~~~
- //
- // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
-
- #ifndef ASIO_ERROR_HPP
- #define ASIO_ERROR_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
- #include "asio/error_code.hpp"
- #include "asio/system_error.hpp"
- #if defined(ASIO_WINDOWS) \
- || defined(__CYGWIN__) \
- || defined(ASIO_WINDOWS_RUNTIME)
- # include <winerror.h>
- #else
- # include <cerrno>
- # include <netdb.h>
- #endif
-
- #if defined(GENERATING_DOCUMENTATION)
- /// INTERNAL ONLY.
- # define ASIO_NATIVE_ERROR(e) implementation_defined
- /// INTERNAL ONLY.
- # define ASIO_SOCKET_ERROR(e) implementation_defined
- /// INTERNAL ONLY.
- # define ASIO_NETDB_ERROR(e) implementation_defined
- /// INTERNAL ONLY.
- # define ASIO_GETADDRINFO_ERROR(e) implementation_defined
- /// INTERNAL ONLY.
- # define ASIO_WIN_OR_POSIX(e_win, e_posix) implementation_defined
- #elif defined(ASIO_WINDOWS_RUNTIME)
- # define ASIO_NATIVE_ERROR(e) __HRESULT_FROM_WIN32(e)
- # define ASIO_SOCKET_ERROR(e) __HRESULT_FROM_WIN32(WSA ## e)
- # define ASIO_NETDB_ERROR(e) __HRESULT_FROM_WIN32(WSA ## e)
- # define ASIO_GETADDRINFO_ERROR(e) __HRESULT_FROM_WIN32(WSA ## e)
- # define ASIO_WIN_OR_POSIX(e_win, e_posix) e_win
- #elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
- # define ASIO_NATIVE_ERROR(e) e
- # define ASIO_SOCKET_ERROR(e) WSA ## e
- # define ASIO_NETDB_ERROR(e) WSA ## e
- # define ASIO_GETADDRINFO_ERROR(e) WSA ## e
- # define ASIO_WIN_OR_POSIX(e_win, e_posix) e_win
- #else
- # define ASIO_NATIVE_ERROR(e) e
- # define ASIO_SOCKET_ERROR(e) e
- # define ASIO_NETDB_ERROR(e) e
- # define ASIO_GETADDRINFO_ERROR(e) e
- # define ASIO_WIN_OR_POSIX(e_win, e_posix) e_posix
- #endif
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
- namespace error {
-
- enum basic_errors
- {
- /// Permission denied.
- access_denied = ASIO_SOCKET_ERROR(EACCES),
-
- /// Address family not supported by protocol.
- address_family_not_supported = ASIO_SOCKET_ERROR(EAFNOSUPPORT),
-
- /// Address already in use.
- address_in_use = ASIO_SOCKET_ERROR(EADDRINUSE),
-
- /// Transport endpoint is already connected.
- already_connected = ASIO_SOCKET_ERROR(EISCONN),
-
- /// Operation already in progress.
- already_started = ASIO_SOCKET_ERROR(EALREADY),
-
- /// Broken pipe.
- broken_pipe = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(ERROR_BROKEN_PIPE),
- ASIO_NATIVE_ERROR(EPIPE)),
-
- /// A connection has been aborted.
- connection_aborted = ASIO_SOCKET_ERROR(ECONNABORTED),
-
- /// Connection refused.
- connection_refused = ASIO_SOCKET_ERROR(ECONNREFUSED),
-
- /// Connection reset by peer.
- connection_reset = ASIO_SOCKET_ERROR(ECONNRESET),
-
- /// Bad file descriptor.
- bad_descriptor = ASIO_SOCKET_ERROR(EBADF),
-
- /// Bad address.
- fault = ASIO_SOCKET_ERROR(EFAULT),
-
- /// No route to host.
- host_unreachable = ASIO_SOCKET_ERROR(EHOSTUNREACH),
-
- /// Operation now in progress.
- in_progress = ASIO_SOCKET_ERROR(EINPROGRESS),
-
- /// Interrupted system call.
- interrupted = ASIO_SOCKET_ERROR(EINTR),
-
- /// Invalid argument.
- invalid_argument = ASIO_SOCKET_ERROR(EINVAL),
-
- /// Message too long.
- message_size = ASIO_SOCKET_ERROR(EMSGSIZE),
-
- /// The name was too long.
- name_too_long = ASIO_SOCKET_ERROR(ENAMETOOLONG),
-
- /// Network is down.
- network_down = ASIO_SOCKET_ERROR(ENETDOWN),
-
- /// Network dropped connection on reset.
- network_reset = ASIO_SOCKET_ERROR(ENETRESET),
-
- /// Network is unreachable.
- network_unreachable = ASIO_SOCKET_ERROR(ENETUNREACH),
-
- /// Too many open files.
- no_descriptors = ASIO_SOCKET_ERROR(EMFILE),
-
- /// No buffer space available.
- no_buffer_space = ASIO_SOCKET_ERROR(ENOBUFS),
-
- /// Cannot allocate memory.
- no_memory = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(ERROR_OUTOFMEMORY),
- ASIO_NATIVE_ERROR(ENOMEM)),
-
- /// Operation not permitted.
- no_permission = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(ERROR_ACCESS_DENIED),
- ASIO_NATIVE_ERROR(EPERM)),
-
- /// Protocol not available.
- no_protocol_option = ASIO_SOCKET_ERROR(ENOPROTOOPT),
-
- /// No such device.
- no_such_device = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(ERROR_BAD_UNIT),
- ASIO_NATIVE_ERROR(ENODEV)),
-
- /// Transport endpoint is not connected.
- not_connected = ASIO_SOCKET_ERROR(ENOTCONN),
-
- /// Socket operation on non-socket.
- not_socket = ASIO_SOCKET_ERROR(ENOTSOCK),
-
- /// Operation cancelled.
- operation_aborted = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(ERROR_OPERATION_ABORTED),
- ASIO_NATIVE_ERROR(ECANCELED)),
-
- /// Operation not supported.
- operation_not_supported = ASIO_SOCKET_ERROR(EOPNOTSUPP),
-
- /// Cannot send after transport endpoint shutdown.
- shut_down = ASIO_SOCKET_ERROR(ESHUTDOWN),
-
- /// Connection timed out.
- timed_out = ASIO_SOCKET_ERROR(ETIMEDOUT),
-
- /// Resource temporarily unavailable.
- try_again = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(ERROR_RETRY),
- ASIO_NATIVE_ERROR(EAGAIN)),
-
- /// The socket is marked non-blocking and the requested operation would block.
- would_block = ASIO_SOCKET_ERROR(EWOULDBLOCK)
- };
-
- enum netdb_errors
- {
- /// Host not found (authoritative).
- host_not_found = ASIO_NETDB_ERROR(HOST_NOT_FOUND),
-
- /// Host not found (non-authoritative).
- host_not_found_try_again = ASIO_NETDB_ERROR(TRY_AGAIN),
-
- /// The query is valid but does not have associated address data.
- no_data = ASIO_NETDB_ERROR(NO_DATA),
-
- /// A non-recoverable error occurred.
- no_recovery = ASIO_NETDB_ERROR(NO_RECOVERY)
- };
-
- enum addrinfo_errors
- {
- /// The service is not supported for the given socket type.
- service_not_found = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(WSATYPE_NOT_FOUND),
- ASIO_GETADDRINFO_ERROR(EAI_SERVICE)),
-
- /// The socket type is not supported.
- socket_type_not_supported = ASIO_WIN_OR_POSIX(
- ASIO_NATIVE_ERROR(WSAESOCKTNOSUPPORT),
- ASIO_GETADDRINFO_ERROR(EAI_SOCKTYPE))
- };
-
- enum misc_errors
- {
- /// Already open.
- already_open = 1,
-
- /// End of file or stream.
- eof,
-
- /// Element not found.
- not_found,
-
- /// The descriptor cannot fit into the select system call's fd_set.
- fd_set_failure
- };
-
- inline const asio::error_category& get_system_category()
- {
- return asio::system_category();
- }
-
- #if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
- extern ASIO_DECL
- const asio::error_category& get_netdb_category();
-
- extern ASIO_DECL
- const asio::error_category& get_addrinfo_category();
-
- #else // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
- inline const asio::error_category& get_netdb_category()
- {
- return get_system_category();
- }
-
- inline const asio::error_category& get_addrinfo_category()
- {
- return get_system_category();
- }
-
- #endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
- extern ASIO_DECL
- const asio::error_category& get_misc_category();
-
- static const asio::error_category&
- system_category ASIO_UNUSED_VARIABLE
- = asio::error::get_system_category();
- static const asio::error_category&
- netdb_category ASIO_UNUSED_VARIABLE
- = asio::error::get_netdb_category();
- static const asio::error_category&
- addrinfo_category ASIO_UNUSED_VARIABLE
- = asio::error::get_addrinfo_category();
- static const asio::error_category&
- misc_category ASIO_UNUSED_VARIABLE
- = asio::error::get_misc_category();
-
- } // namespace error
- } // namespace asio
-
- #if defined(ASIO_HAS_STD_SYSTEM_ERROR)
- namespace std {
-
- template<> struct is_error_code_enum<asio::error::basic_errors>
- {
- static const bool value = true;
- };
-
- template<> struct is_error_code_enum<asio::error::netdb_errors>
- {
- static const bool value = true;
- };
-
- template<> struct is_error_code_enum<asio::error::addrinfo_errors>
- {
- static const bool value = true;
- };
-
- template<> struct is_error_code_enum<asio::error::misc_errors>
- {
- static const bool value = true;
- };
-
- } // namespace std
- #endif // defined(ASIO_HAS_STD_SYSTEM_ERROR)
-
- namespace asio {
- namespace error {
-
- inline asio::error_code make_error_code(basic_errors e)
- {
- return asio::error_code(
- static_cast<int>(e), get_system_category());
- }
-
- inline asio::error_code make_error_code(netdb_errors e)
- {
- return asio::error_code(
- static_cast<int>(e), get_netdb_category());
- }
-
- inline asio::error_code make_error_code(addrinfo_errors e)
- {
- return asio::error_code(
- static_cast<int>(e), get_addrinfo_category());
- }
-
- inline asio::error_code make_error_code(misc_errors e)
- {
- return asio::error_code(
- static_cast<int>(e), get_misc_category());
- }
-
- } // namespace error
- namespace stream_errc {
- // Simulates the proposed stream_errc scoped enum.
- using error::eof;
- using error::not_found;
- } // namespace stream_errc
- namespace socket_errc {
- // Simulates the proposed socket_errc scoped enum.
- using error::already_open;
- using error::not_found;
- } // namespace socket_errc
- namespace resolver_errc {
- // Simulates the proposed resolver_errc scoped enum.
- using error::host_not_found;
- const error::netdb_errors try_again = error::host_not_found_try_again;
- using error::service_not_found;
- } // namespace resolver_errc
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #undef ASIO_NATIVE_ERROR
- #undef ASIO_SOCKET_ERROR
- #undef ASIO_NETDB_ERROR
- #undef ASIO_GETADDRINFO_ERROR
- #undef ASIO_WIN_OR_POSIX
-
- #if defined(ASIO_HEADER_ONLY)
- # include "asio/impl/error.ipp"
- #endif // defined(ASIO_HEADER_ONLY)
-
- #endif // ASIO_ERROR_HPP
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