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net/SocketError: add syscall specific check functions

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Fixes Windows compatibility.
This commit is contained in:
Max Kellermann
2021-01-21 22:04:14 +01:00
parent 2719f62feb
commit 9e2d09dabc
5 changed files with 76 additions and 9 deletions
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73
src/net/SocketError.hxx
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@@ -52,14 +52,79 @@ GetSocketError() noexcept
#endif
}
gcc_const
static inline bool
IsSocketErrorAgain(socket_error_t code) noexcept
constexpr bool
IsSocketErrorInProgress(socket_error_t code) noexcept
{
#ifdef _WIN32
return code == WSAEINPROGRESS;
#else
return code == EAGAIN;
return code == EINPROGRESS;
#endif
}
constexpr bool
IsSocketErrorWouldBlock(socket_error_t code) noexcept
{
#ifdef _WIN32
return code == WSAEWOULDBLOCK;
#else
return code == EWOULDBLOCK;
#endif
}
constexpr bool
IsSocketErrorConnectWouldBlock(socket_error_t code) noexcept
{
#if defined(_WIN32) || defined(__linux__)
/* on Windows, WSAEINPROGRESS is for blocking sockets and
WSAEWOULDBLOCK for non-blocking sockets */
/* on Linux, EAGAIN==EWOULDBLOCK is for local sockets and
EINPROGRESS is for all other sockets */
return IsSocketErrorInProgress(code) || IsSocketErrorWouldBlock(code);
#else
/* on all other operating systems, there's just EINPROGRESS */
return IsSocketErrorInProgress(code);
#endif
}
constexpr bool
IsSocketErrorSendWouldBlock(socket_error_t code) noexcept
{
#ifdef _WIN32
/* on Windows, WSAEINPROGRESS is for blocking sockets and
WSAEWOULDBLOCK for non-blocking sockets */
return IsSocketErrorInProgress(code) || IsSocketErrorWouldBlock(code);
#else
/* on all other operating systems, there's just EAGAIN==EWOULDBLOCK */
return IsSocketErrorWouldBlock(code);
#endif
}
constexpr bool
IsSocketErrorReceiveWouldBlock(socket_error_t code) noexcept
{
#ifdef _WIN32
/* on Windows, WSAEINPROGRESS is for blocking sockets and
WSAEWOULDBLOCK for non-blocking sockets */
return IsSocketErrorInProgress(code) || IsSocketErrorWouldBlock(code);
#else
/* on all other operating systems, there's just
EAGAIN==EWOULDBLOCK */
return IsSocketErrorWouldBlock(code);
#endif
}
constexpr bool
IsSocketErrorAcceptWouldBlock(socket_error_t code) noexcept
{
#ifdef _WIN32
/* on Windows, WSAEINPROGRESS is for blocking sockets and
WSAEWOULDBLOCK for non-blocking sockets */
return IsSocketErrorInProgress(code) || IsSocketErrorWouldBlock(code);
#else
/* on all other operating systems, there's just
EAGAIN==EWOULDBLOCK */
return IsSocketErrorWouldBlock(code);
#endif
}