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/*
* Copyright 2012-2019 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UNIQUE_SOCKET_DESCRIPTOR_SOCKET_HXX
#define UNIQUE_SOCKET_DESCRIPTOR_SOCKET_HXX
#include "SocketDescriptor.hxx"
#include <algorithm>
#include <utility>
class StaticSocketAddress;
/**
* Wrapper for a socket file descriptor.
*/
class UniqueSocketDescriptor : public SocketDescriptor {
public:
UniqueSocketDescriptor()
:SocketDescriptor(SocketDescriptor::Undefined()) {}
explicit UniqueSocketDescriptor(SocketDescriptor _fd)
:SocketDescriptor(_fd) {}
explicit UniqueSocketDescriptor(FileDescriptor _fd)
:SocketDescriptor(_fd) {}
explicit UniqueSocketDescriptor(int _fd):SocketDescriptor(_fd) {}
UniqueSocketDescriptor(UniqueSocketDescriptor &&other)
:SocketDescriptor(std::exchange(other.fd, -1)) {}
~UniqueSocketDescriptor() {
if (IsDefined())
Close();
}
/**
* Release ownership and return the descriptor as an unmanaged
* #SocketDescriptor instance.
*/
SocketDescriptor Release() {
return std::exchange(*(SocketDescriptor *)this, Undefined());
}
UniqueSocketDescriptor &operator=(UniqueSocketDescriptor &&src) {
using std::swap;
swap(fd, src.fd);
return *this;
}
bool operator==(const UniqueSocketDescriptor &other) const {
return fd == other.fd;
}
/**
* @return an "undefined" instance on error
*/
UniqueSocketDescriptor AcceptNonBlock() const {
return UniqueSocketDescriptor(SocketDescriptor::AcceptNonBlock());
}
/**
* @return an "undefined" instance on error
*/
UniqueSocketDescriptor AcceptNonBlock(StaticSocketAddress &address) const {
return UniqueSocketDescriptor(SocketDescriptor::AcceptNonBlock(address));
}
#ifndef _WIN32
static bool CreateSocketPair(int domain, int type, int protocol,
UniqueSocketDescriptor &a,
UniqueSocketDescriptor &b) {
return SocketDescriptor::CreateSocketPair(domain, type,
protocol,
a, b);
}
static bool CreateSocketPairNonBlock(int domain, int type, int protocol,
UniqueSocketDescriptor &a,
UniqueSocketDescriptor &b) {
return SocketDescriptor::CreateSocketPairNonBlock(domain, type,
protocol,
a, b);
}
#endif
};
#endif
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