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/*
* Copyright 2003-2021 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_SOCKET_ERROR_HXX
#define MPD_SOCKET_ERROR_HXX
#include "util/Compiler.h"
#include "system/Error.hxx"
#ifdef _WIN32
#include <winsock2.h>
typedef DWORD socket_error_t;
#else
#include <cerrno>
typedef int socket_error_t;
#endif
gcc_pure
static inline socket_error_t
GetSocketError() noexcept
{
#ifdef _WIN32
return WSAGetLastError();
#else
return errno;
#endif
}
gcc_const
static inline bool
IsSocketErrorAgain(socket_error_t code) noexcept
{
#ifdef _WIN32
return code == WSAEINPROGRESS;
#else
return code == EAGAIN;
#endif
}
gcc_const
static inline bool
IsSocketErrorInterruped(socket_error_t code) noexcept
{
#ifdef _WIN32
return code == WSAEINTR;
#else
return code == EINTR;
#endif
}
gcc_const
static inline bool
IsSocketErrorClosed(socket_error_t code) noexcept
{
#ifdef _WIN32
return code == WSAECONNRESET;
#else
return code == EPIPE || code == ECONNRESET;
#endif
}
/**
* Helper class that formats a socket error message into a
* human-readable string. On Windows, a buffer is necessary for this,
* and this class hosts the buffer.
*/
class SocketErrorMessage {
#ifdef _WIN32
static constexpr unsigned msg_size = 256;
char msg[msg_size];
#else
const char *const msg;
#endif
public:
explicit SocketErrorMessage(socket_error_t code=GetSocketError()) noexcept;
operator const char *() const {
return msg;
}
};
gcc_const
static inline std::system_error
MakeSocketError(socket_error_t code, const char *msg) noexcept
{
#ifdef _WIN32
return MakeLastError(code, msg);
#else
return MakeErrno(code, msg);
#endif
}
gcc_pure
static inline std::system_error
MakeSocketError(const char *msg) noexcept
{
return MakeSocketError(GetSocketError(), msg);
}
#endif
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