53ec02d5e9
On Windows, a socket is not a file descriptor; it is a different beast (and anyway, Windows doesn't have file descriptors).
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
// SPDX-License-Identifier: BSD-2-Clause
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// author: Max Kellermann <max.kellermann@gmail.com>
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#ifndef UNIQUE_SOCKET_DESCRIPTOR_SOCKET_HXX
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#define UNIQUE_SOCKET_DESCRIPTOR_SOCKET_HXX
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#include "SocketDescriptor.hxx"
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#include <utility>
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class StaticSocketAddress;
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/**
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* Wrapper for a socket file descriptor.
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*/
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class UniqueSocketDescriptor : public SocketDescriptor {
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public:
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UniqueSocketDescriptor() noexcept
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:SocketDescriptor(SocketDescriptor::Undefined()) {}
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explicit UniqueSocketDescriptor(SocketDescriptor _fd) noexcept
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:SocketDescriptor(_fd) {}
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#ifndef _WIN32
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explicit UniqueSocketDescriptor(FileDescriptor _fd) noexcept
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:SocketDescriptor(_fd) {}
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#endif // !_WIN32
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explicit UniqueSocketDescriptor(int _fd) noexcept
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:SocketDescriptor(_fd) {}
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#ifdef _WIN32
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UniqueSocketDescriptor(UniqueSocketDescriptor &&other) noexcept
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:SocketDescriptor(std::exchange(other.fd, INVALID_SOCKET)) {}
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#else // !_WIN32
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UniqueSocketDescriptor(UniqueSocketDescriptor &&other) noexcept
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:SocketDescriptor(std::exchange(other.fd, -1)) {}
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#endif // !_WIN32
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~UniqueSocketDescriptor() noexcept {
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if (IsDefined())
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Close();
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}
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/**
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* Release ownership and return the descriptor as an unmanaged
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* #SocketDescriptor instance.
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*/
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SocketDescriptor Release() noexcept {
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return std::exchange(*(SocketDescriptor *)this, Undefined());
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}
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UniqueSocketDescriptor &operator=(UniqueSocketDescriptor &&src) noexcept {
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using std::swap;
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swap(fd, src.fd);
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return *this;
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}
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bool operator==(const UniqueSocketDescriptor &other) const noexcept {
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return fd == other.fd;
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}
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/**
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* @return an "undefined" instance on error
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*/
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UniqueSocketDescriptor AcceptNonBlock() const noexcept {
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return UniqueSocketDescriptor(SocketDescriptor::AcceptNonBlock());
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}
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/**
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* @return an "undefined" instance on error
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*/
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UniqueSocketDescriptor AcceptNonBlock(StaticSocketAddress &address) const noexcept {
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return UniqueSocketDescriptor(SocketDescriptor::AcceptNonBlock(address));
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}
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#ifndef _WIN32
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static bool CreateSocketPair(int domain, int type, int protocol,
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UniqueSocketDescriptor &a,
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UniqueSocketDescriptor &b) noexcept {
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return SocketDescriptor::CreateSocketPair(domain, type,
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protocol,
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a, b);
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}
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static bool CreateSocketPairNonBlock(int domain, int type, int protocol,
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UniqueSocketDescriptor &a,
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UniqueSocketDescriptor &b) noexcept {
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return SocketDescriptor::CreateSocketPairNonBlock(domain, type,
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protocol,
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a, b);
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}
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#endif
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};
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#endif
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