socket_constants.h

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/*
  Copyright (c) 2019, 2025, Oracle and/or its affiliates.
 
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  it under the terms of the GNU General Public License, version 2.0,
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  You should have received a copy of the GNU General Public License
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*/
 
#ifndef MYSQL_HARNESS_NET_TS_IMPL_SOCKET_CONSTANTS_H_
#define MYSQL_HARNESS_NET_TS_IMPL_SOCKET_CONSTANTS_H_
 
#include <bitset>
#include <system_error>
 
#ifdef _WIN32
#include <WinSock2.h>
#include <Windows.h>
#else
#include <poll.h>        // POLLIN, ...
#include <sys/socket.h>  // MSG_...
#endif
 
namespace net {
namespace impl {
namespace socket {
 
#ifdef _WIN32
constexpr const int kSocketError{SOCKET_ERROR};
using native_handle_type = SOCKET;
constexpr const native_handle_type kInvalidSocket = INVALID_SOCKET;
using socklen_t = int;
#else
constexpr const int kSocketError{-1};
using native_handle_type = int;
constexpr const native_handle_type kInvalidSocket = -1;
#endif
 
using error_type = std::error_code;
#ifdef _WIN32
using msghdr_base = ::WSAMSG;
using iovec_base = ::WSABUF;
#else
using msghdr_base = ::msghdr;
using iovec_base = ::iovec;
#endif
 
using message_flags = std::bitset<31>;
 
static constexpr message_flags message_peek = MSG_PEEK;
static constexpr message_flags message_out_of_band = MSG_OOB;
static constexpr message_flags message_do_not_route = MSG_DONTROUTE;
#ifdef MSG_FASTOPEN
// linux
static constexpr message_flags message_fast_open = MSG_FASTOPEN;
#endif
#ifdef MSG_ZEROCOPY
// linux
static constexpr message_flags message_zero_copy = MSG_ZEROCOPY;
#endif
#ifdef MSG_ERRQUEUE
// linux
static constexpr message_flags message_error_queue = MSG_ERRQUEUE;
#endif
#ifdef _WIN32
static constexpr message_flags message_partial = MSG_PARTIAL;
static constexpr message_flags message_waitall = MSG_WAITALL;
#endif
 
enum class wait_type {
  wait_read = POLLIN,
  wait_write = POLLOUT,
  wait_error = POLLERR | POLLHUP,
};
 
}  // namespace socket
}  // namespace impl
}  // namespace net
 
#endif