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Merge branch 'BarabasGitHub-improve-windows-networking'

master
Andrew Kelley 2020-10-22 17:45:31 -07:00
parent 79ec08fe2f 569f7ce49e
commit 59c26c79e8
4 changed files with 439 additions and 147 deletions
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481
lib/std/os.zig
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@ -2646,14 +2646,7 @@ pub fn socket(domain: u32, socket_type: u32, protocol: u32) SocketError!socket_t
// NOTE: windows translates the SOCK_NONBLOCK/SOCK_CLOEXEC flags into windows-analagous operations
const filtered_sock_type = socket_type & ~@as(u32, SOCK_NONBLOCK | SOCK_CLOEXEC);
const flags: u32 = if ((socket_type & SOCK_CLOEXEC) != 0) windows.ws2_32.WSA_FLAG_NO_HANDLE_INHERIT else 0;
const rc = windows.ws2_32.WSASocketW(@intCast(c_int, domain), @intCast(c_int, filtered_sock_type), @intCast(c_int, protocol), null, 0, flags);
if (rc == windows.ws2_32.INVALID_SOCKET) switch (windows.ws2_32.WSAGetLastError()) {
.WSAEMFILE => return error.ProcessFdQuotaExceeded,
.WSAENOBUFS => return error.SystemResources,
.WSAEAFNOSUPPORT => return error.AddressFamilyNotSupported,
.WSAEPROTONOSUPPORT => return error.ProtocolNotSupported,
else => |err| return windows.unexpectedWSAError(err),
};
const rc = try windows.WSASocketW(@bitCast(i32, domain), @bitCast(i32, filtered_sock_type), @bitCast(i32, protocol), null, 0, flags);
errdefer windows.closesocket(rc) catch unreachable;
if ((socket_type & SOCK_NONBLOCK) != 0) {
var mode: c_ulong = 1; // nonblocking
@ -2727,28 +2720,55 @@ pub const BindError = error{
/// The socket inode would reside on a read-only filesystem.
ReadOnlyFileSystem,
/// The network subsystem has failed.
NetworkSubsystemFailed,
FileDescriptorNotASocket,
AlreadyBound,
} || UnexpectedError;
/// addr is `*const T` where T is one of the sockaddr
pub fn bind(sockfd: fd_t, addr: *const sockaddr, len: socklen_t) BindError!void {
const rc = system.bind(sockfd, addr, len);
switch (errno(rc)) {
0 => return,
EACCES => return error.AccessDenied,
EADDRINUSE => return error.AddressInUse,
EBADF => unreachable, // always a race condition if this error is returned
EINVAL => unreachable, // invalid parameters
ENOTSOCK => unreachable, // invalid `sockfd`
EADDRNOTAVAIL => return error.AddressNotAvailable,
EFAULT => unreachable, // invalid `addr` pointer
ELOOP => return error.SymLinkLoop,
ENAMETOOLONG => return error.NameTooLong,
ENOENT => return error.FileNotFound,
ENOMEM => return error.SystemResources,
ENOTDIR => return error.NotDir,
EROFS => return error.ReadOnlyFileSystem,
else => |err| return unexpectedErrno(err),
pub fn bind(sock: socket_t, addr: *const sockaddr, len: socklen_t) BindError!void {
const rc = system.bind(sock, addr, len);
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable, // not initialized WSA
.WSAEACCES => return error.AccessDenied,
.WSAEADDRINUSE => return error.AddressInUse,
.WSAEADDRNOTAVAIL => return error.AddressNotAvailable,
.WSAENOTSOCK => return error.FileDescriptorNotASocket,
.WSAEFAULT => unreachable, // invalid pointers
.WSAEINVAL => return error.AlreadyBound,
.WSAENOBUFS => return error.SystemResources,
.WSAENETDOWN => return error.NetworkSubsystemFailed,
else => |err| return windows.unexpectedWSAError(err),
}
unreachable;
}
return;
} else {
switch (errno(rc)) {
0 => return,
EACCES => return error.AccessDenied,
EADDRINUSE => return error.AddressInUse,
EBADF => unreachable, // always a race condition if this error is returned
EINVAL => unreachable, // invalid parameters
ENOTSOCK => unreachable, // invalid `sockfd`
EADDRNOTAVAIL => return error.AddressNotAvailable,
EFAULT => unreachable, // invalid `addr` pointer
ELOOP => return error.SymLinkLoop,
ENAMETOOLONG => return error.NameTooLong,
ENOENT => return error.FileNotFound,
ENOMEM => return error.SystemResources,
ENOTDIR => return error.NotDir,
EROFS => return error.ReadOnlyFileSystem,
else => |err| return unexpectedErrno(err),
}
}
unreachable;
}
const ListenError = error{
@ -2764,23 +2784,57 @@ const ListenError = error{
/// The socket is not of a type that supports the listen() operation.
OperationNotSupported,
/// The network subsystem has failed.
NetworkSubsystemFailed,
/// Ran out of system resources
/// On Windows it can either run out of socket descriptors or buffer space
SystemResources,
/// Already connected
AlreadyConnected,
/// Socket has not been bound yet
SocketNotBound,
} || UnexpectedError;
pub fn listen(sockfd: fd_t, backlog: u32) ListenError!void {
const rc = system.listen(sockfd, backlog);
switch (errno(rc)) {
0 => return,
EADDRINUSE => return error.AddressInUse,
EBADF => unreachable,
ENOTSOCK => return error.FileDescriptorNotASocket,
EOPNOTSUPP => return error.OperationNotSupported,
else => |err| return unexpectedErrno(err),
pub fn listen(sock: socket_t, backlog: u31) ListenError!void {
const rc = system.listen(sock, backlog);
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable, // not initialized WSA
.WSAENETDOWN => return error.NetworkSubsystemFailed,
.WSAEADDRINUSE => return error.AddressInUse,
.WSAEISCONN => return error.AlreadyConnected,
.WSAEINVAL => return error.SocketNotBound,
.WSAEMFILE, .WSAENOBUFS => return error.SystemResources,
.WSAENOTSOCK => return error.FileDescriptorNotASocket,
.WSAEOPNOTSUPP => return error.OperationNotSupported,
.WSAEINPROGRESS => unreachable,
else => |err| return windows.unexpectedWSAError(err),
}
}
return;
} else {
switch (errno(rc)) {
0 => return,
EADDRINUSE => return error.AddressInUse,
EBADF => unreachable,
ENOTSOCK => return error.FileDescriptorNotASocket,
EOPNOTSUPP => return error.OperationNotSupported,
else => |err| return unexpectedErrno(err),
}
}
}
pub const AcceptError = error{
ConnectionAborted,
/// The file descriptor sockfd does not refer to a socket.
FileDescriptorNotASocket,
/// The per-process limit on the number of open file descriptors has been reached.
ProcessFdQuotaExceeded,
@ -2806,6 +2860,16 @@ pub const AcceptError = error{
/// Permission to create a socket of the specified type and/or
/// protocol is denied.
PermissionDenied,
/// An incoming connection was indicated, but was subsequently terminated by the
/// remote peer prior to accepting the call.
ConnectionResetByPeer,
/// The network subsystem has failed.
NetworkSubsystemFailed,
/// The referenced socket is not a type that supports connection-oriented service.
OperationNotSupported,
} || UnexpectedError;
/// Accept a connection on a socket.
@ -2814,19 +2878,19 @@ pub const AcceptError = error{
pub fn accept(
/// This argument is a socket that has been created with `socket`, bound to a local address
/// with `bind`, and is listening for connections after a `listen`.
sockfd: fd_t,
sock: socket_t,
/// This argument is a pointer to a sockaddr structure. This structure is filled in with the
/// address of the peer socket, as known to the communications layer. The exact format of the
/// address returned addr is determined by the socket's address family (see `socket` and the
/// respective protocol man pages).
addr: *sockaddr,
addr: ?*sockaddr,
/// This argument is a value-result argument: the caller must initialize it to contain the
/// size (in bytes) of the structure pointed to by addr; on return it will contain the actual size
/// of the peer address.
///
/// The returned address is truncated if the buffer provided is too small; in this case, `addr_size`
/// will return a value greater than was supplied to the call.
addr_size: *socklen_t,
addr_size: ?*socklen_t,
/// The following values can be bitwise ORed in flags to obtain different behavior:
/// * `SOCK_NONBLOCK` - Set the `O_NONBLOCK` file status flag on the open file description (see `open`)
/// referred to by the new file descriptor. Using this flag saves extra calls to `fcntl` to achieve
@ -2834,41 +2898,61 @@ pub fn accept(
/// * `SOCK_CLOEXEC` - Set the close-on-exec (`FD_CLOEXEC`) flag on the new file descriptor. See the
/// description of the `O_CLOEXEC` flag in `open` for reasons why this may be useful.
flags: u32,
) AcceptError!fd_t {
const have_accept4 = comptime !std.Target.current.isDarwin();
) AcceptError!socket_t {
const have_accept4 = comptime !(std.Target.current.isDarwin() or builtin.os.tag == .windows);
assert(0 == (flags & ~@as(u32, SOCK_NONBLOCK | SOCK_CLOEXEC))); // Unsupported flag(s)
while (true) {
const accepted_sock = while (true) {
const rc = if (have_accept4)
system.accept4(sockfd, addr, addr_size, flags)
system.accept4(sock, addr, addr_size, flags)
else
system.accept(sockfd, addr, addr_size);
system.accept(sock, addr, addr_size);
switch (errno(rc)) {
0 => {
const fd = @intCast(fd_t, rc);
if (!have_accept4) {
try setSockFlags(fd, flags);
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.INVALID_SOCKET) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable, // not initialized WSA
.WSAECONNRESET => return error.ConnectionResetByPeer,
.WSAEFAULT => unreachable,
.WSAEINVAL => return error.SocketNotListening,
.WSAEMFILE => return error.ProcessFdQuotaExceeded,
.WSAENETDOWN => return error.NetworkSubsystemFailed,
.WSAENOBUFS => return error.FileDescriptorNotASocket,
.WSAEOPNOTSUPP => return error.OperationNotSupported,
.WSAEWOULDBLOCK => return error.WouldBlock,
else => |err| return windows.unexpectedWSAError(err),
}
return fd;
},
EINTR => continue,
EAGAIN => return error.WouldBlock,
EBADF => unreachable, // always a race condition
ECONNABORTED => return error.ConnectionAborted,
EFAULT => unreachable,
EINVAL => return error.SocketNotListening,
ENOTSOCK => unreachable,
EMFILE => return error.ProcessFdQuotaExceeded,
ENFILE => return error.SystemFdQuotaExceeded,
ENOBUFS => return error.SystemResources,
ENOMEM => return error.SystemResources,
EOPNOTSUPP => unreachable,
EPROTO => return error.ProtocolFailure,
EPERM => return error.BlockedByFirewall,
else => |err| return unexpectedErrno(err),
} else {
break rc;
}
} else {
switch (errno(rc)) {
0 => {
break @intCast(socket_t, rc);
},
EINTR => continue,
EAGAIN => return error.WouldBlock,
EBADF => unreachable, // always a race condition
ECONNABORTED => return error.ConnectionAborted,
EFAULT => unreachable,
EINVAL => return error.SocketNotListening,
ENOTSOCK => unreachable,
EMFILE => return error.ProcessFdQuotaExceeded,
ENFILE => return error.SystemFdQuotaExceeded,
ENOBUFS => return error.SystemResources,
ENOMEM => return error.SystemResources,
EOPNOTSUPP => unreachable,
EPROTO => return error.ProtocolFailure,
EPERM => return error.BlockedByFirewall,
else => |err| return unexpectedErrno(err),
}
}
} else unreachable;
if (!have_accept4) {
try setSockFlags(accepted_sock, flags);
}
return accepted_sock;
}
pub const EpollCreateError = error{
@ -2982,18 +3066,41 @@ pub fn eventfd(initval: u32, flags: u32) EventFdError!i32 {
pub const GetSockNameError = error{
/// Insufficient resources were available in the system to perform the operation.
SystemResources,
/// The network subsystem has failed.
NetworkSubsystemFailed,
/// Socket hasn't been bound yet
SocketNotBound,
FileDescriptorNotASocket,
} || UnexpectedError;
pub fn getsockname(sockfd: fd_t, addr: *sockaddr, addrlen: *socklen_t) GetSockNameError!void {
switch (errno(system.getsockname(sockfd, addr, addrlen))) {
0 => return,
else => |err| return unexpectedErrno(err),
pub fn getsockname(sock: socket_t, addr: *sockaddr, addrlen: *socklen_t) GetSockNameError!void {
const rc = system.getsockname(sock, addr, addrlen);
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable,
.WSAENETDOWN => return error.NetworkSubsystemFailed,
.WSAEFAULT => unreachable, // addr or addrlen have invalid pointers or addrlen points to an incorrect value
.WSAENOTSOCK => return error.FileDescriptorNotASocket,
.WSAEINVAL => return error.SocketNotBound,
else => |err| return windows.unexpectedWSAError(err),
}
}
return;
} else {
switch (errno(rc)) {
0 => return,
else => |err| return unexpectedErrno(err),
EBADF => unreachable, // always a race condition
EFAULT => unreachable,
EINVAL => unreachable, // invalid parameters
ENOTSOCK => unreachable,
ENOBUFS => return error.SystemResources,
EBADF => unreachable, // always a race condition
EFAULT => unreachable,
EINVAL => unreachable, // invalid parameters
ENOTSOCK => return error.FileDescriptorNotASocket,
ENOBUFS => return error.SystemResources,
}
}
}
@ -3041,9 +3148,9 @@ pub const ConnectError = error{
/// Initiate a connection on a socket.
/// If `sockfd` is opened in non blocking mode, the function will
/// return error.WouldBlock when EAGAIN or EINPROGRESS is received.
pub fn connect(sockfd: socket_t, sock_addr: *const sockaddr, len: socklen_t) ConnectError!void {
pub fn connect(sock: socket_t, sock_addr: *const sockaddr, len: socklen_t) ConnectError!void {
if (builtin.os.tag == .windows) {
const rc = windows.ws2_32.connect(sockfd, sock_addr, len);
const rc = windows.ws2_32.connect(sock, sock_addr, @intCast(i32, len));
if (rc == 0) return;
switch (windows.ws2_32.WSAGetLastError()) {
.WSAEADDRINUSE => return error.AddressInUse,
@ -3066,7 +3173,7 @@ pub fn connect(sockfd: socket_t, sock_addr: *const sockaddr, len: socklen_t) Con
}
while (true) {
switch (errno(system.connect(sockfd, sock_addr, len))) {
switch (errno(system.connect(sock, sock_addr, len))) {
0 => return,
EACCES => return error.PermissionDenied,
EPERM => return error.PermissionDenied,
@ -3921,32 +4028,49 @@ pub fn fcntl(fd: fd_t, cmd: i32, arg: usize) FcntlError!usize {
}
}
fn setSockFlags(fd: fd_t, flags: u32) !void {
fn setSockFlags(sock: socket_t, flags: u32) !void {
if ((flags & SOCK_CLOEXEC) != 0) {
var fd_flags = fcntl(fd, F_GETFD, 0) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
fd_flags |= FD_CLOEXEC;
_ = fcntl(fd, F_SETFD, fd_flags) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
if (builtin.os.tag == .windows) {
// TODO: Find out if this is supported for sockets
} else {
var fd_flags = fcntl(sock, F_GETFD, 0) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
fd_flags |= FD_CLOEXEC;
_ = fcntl(sock, F_SETFD, fd_flags) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
}
}
if ((flags & SOCK_NONBLOCK) != 0) {
var fl_flags = fcntl(fd, F_GETFL, 0) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
fl_flags |= O_NONBLOCK;
_ = fcntl(fd, F_SETFL, fl_flags) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
if (builtin.os.tag == .windows) {
var mode: c_ulong = 1;
if (windows.ws2_32.ioctlsocket(sock, windows.ws2_32.FIONBIO, &mode) == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable,
.WSAENETDOWN => return error.NetworkSubsystemFailed,
.WSAENOTSOCK => return error.FileDescriptorNotASocket,
// TODO: handle more errors
else => |err| return windows.unexpectedWSAError(err),
}
}
} else {
var fl_flags = fcntl(sock, F_GETFL, 0) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
fl_flags |= O_NONBLOCK;
_ = fcntl(sock, F_SETFL, fl_flags) catch |err| switch (err) {
error.FileBusy => unreachable,
error.Locked => unreachable,
else => |e| return e,
};
}
}
}
@ -4544,6 +4668,8 @@ pub const SendError = error{
/// The local end has been shut down on a connection oriented socket. In this case, the
/// process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.
BrokenPipe,
FileDescriptorNotASocket,
} || UnexpectedError;
/// Transmit a message to another socket.
@ -4573,7 +4699,7 @@ pub const SendError = error{
/// possible to send more data.
pub fn sendto(
/// The file descriptor of the sending socket.
sockfd: fd_t,
sockfd: socket_t,
/// Message to send.
buf: []const u8,
flags: u32,
@ -4582,26 +4708,43 @@ pub fn sendto(
) SendError!usize {
while (true) {
const rc = system.sendto(sockfd, buf.ptr, buf.len, flags, dest_addr, addrlen);
switch (errno(rc)) {
0 => return @intCast(usize, rc),
EACCES => return error.AccessDenied,
EAGAIN => return error.WouldBlock,
EALREADY => return error.FastOpenAlreadyInProgress,
EBADF => unreachable, // always a race condition
ECONNRESET => return error.ConnectionResetByPeer,
EDESTADDRREQ => unreachable, // The socket is not connection-mode, and no peer address is set.
EFAULT => unreachable, // An invalid user space address was specified for an argument.
EINTR => continue,
EINVAL => unreachable, // Invalid argument passed.
EISCONN => unreachable, // connection-mode socket was connected already but a recipient was specified
EMSGSIZE => return error.MessageTooBig,
ENOBUFS => return error.SystemResources,
ENOMEM => return error.SystemResources,
ENOTCONN => unreachable, // The socket is not connected, and no target has been given.
ENOTSOCK => unreachable, // The file descriptor sockfd does not refer to a socket.
EOPNOTSUPP => unreachable, // Some bit in the flags argument is inappropriate for the socket type.
EPIPE => return error.BrokenPipe,
else => |err| return unexpectedErrno(err),
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSAEACCES => return error.AccessDenied,
.WSAECONNRESET => return error.ConnectionResetByPeer,
.WSAEMSGSIZE => return error.MessageTooBig,
.WSAENOBUFS => return error.SystemResources,
.WSAENOTSOCK => return error.FileDescriptorNotASocket,
// TODO: handle more errors
else => |err| return windows.unexpectedWSAError(err),
}
} else {
return @intCast(usize, rc);
}
} else {
switch (errno(rc)) {
0 => return @intCast(usize, rc),
EACCES => return error.AccessDenied,
EAGAIN => return error.WouldBlock,
EALREADY => return error.FastOpenAlreadyInProgress,
EBADF => unreachable, // always a race condition
ECONNRESET => return error.ConnectionResetByPeer,
EDESTADDRREQ => unreachable, // The socket is not connection-mode, and no peer address is set.
EFAULT => unreachable, // An invalid user space address was specified for an argument.
EINTR => continue,
EINVAL => unreachable, // Invalid argument passed.
EISCONN => unreachable, // connection-mode socket was connected already but a recipient was specified
EMSGSIZE => return error.MessageTooBig,
ENOBUFS => return error.SystemResources,
ENOMEM => return error.SystemResources,
ENOTCONN => unreachable, // The socket is not connected, and no target has been given.
ENOTSOCK => unreachable, // The file descriptor sockfd does not refer to a socket.
EOPNOTSUPP => unreachable, // Some bit in the flags argument is inappropriate for the socket type.
EPIPE => return error.BrokenPipe,
else => |err| return unexpectedErrno(err),
}
}
}
}
@ -4627,7 +4770,7 @@ pub fn sendto(
/// possible to send more data.
pub fn send(
/// The file descriptor of the sending socket.
sockfd: fd_t,
sockfd: socket_t,
buf: []const u8,
flags: u32,
) SendError!usize {
@ -5042,6 +5185,9 @@ pub fn copy_file_range(fd_in: fd_t, off_in: u64, fd_out: fd_t, off_out: u64, len
}
pub const PollError = error{
/// The network subsystem has failed.
NetworkSubsystemFailed,
/// The kernel had no space to allocate file descriptor tables.
SystemResources,
} || UnexpectedError;
@ -5049,14 +5195,29 @@ pub const PollError = error{
pub fn poll(fds: []pollfd, timeout: i32) PollError!usize {
while (true) {
const rc = system.poll(fds.ptr, fds.len, timeout);
switch (errno(rc)) {
0 => return @intCast(usize, rc),
EFAULT => unreachable,
EINTR => continue,
EINVAL => unreachable,
ENOMEM => return error.SystemResources,
else => |err| return unexpectedErrno(err),
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable,
.WSAENETDOWN => return error.NetworkSubsystemFailed,
.WSAENOBUFS => return error.SystemResources,
// TODO: handle more errors
else => |err| return windows.unexpectedWSAError(err),
}
} else {
return @intCast(usize, rc);
}
} else {
switch (errno(rc)) {
0 => return @intCast(usize, rc),
EFAULT => unreachable,
EINTR => continue,
EINVAL => unreachable,
ENOMEM => return error.SystemResources,
else => |err| return unexpectedErrno(err),
}
}
unreachable;
}
}
@ -5071,12 +5232,30 @@ pub const RecvFromError = error{
/// Could not allocate kernel memory.
SystemResources,
ConnectionResetByPeer,
/// The socket has not been bound.
SocketNotBound,
/// The UDP message was too big for the buffer and part of it has been discarded
MessageTooBig,
/// The network subsystem has failed.
NetworkSubsystemFailed,
/// The socket is not connected (connection-oriented sockets only).
SocketNotConnected,
} || UnexpectedError;
pub fn recv(sock: socket_t, buf: []u8, flags: u32) RecvFromError!usize {
return recvfrom(sock, buf, flags, null, null);
}
/// If `sockfd` is opened in non blocking mode, the function will
/// return error.WouldBlock when EAGAIN is received.
pub fn recvfrom(
sockfd: fd_t,
sockfd: socket_t,
buf: []u8,
flags: u32,
src_addr: ?*sockaddr,
@ -5084,18 +5263,36 @@ pub fn recvfrom(
) RecvFromError!usize {
while (true) {
const rc = system.recvfrom(sockfd, buf.ptr, buf.len, flags, src_addr, addrlen);
switch (errno(rc)) {
0 => return @intCast(usize, rc),
EBADF => unreachable, // always a race condition
EFAULT => unreachable,
EINVAL => unreachable,
ENOTCONN => unreachable,
ENOTSOCK => unreachable,
EINTR => continue,
EAGAIN => return error.WouldBlock,
ENOMEM => return error.SystemResources,
ECONNREFUSED => return error.ConnectionRefused,
else => |err| return unexpectedErrno(err),
if (builtin.os.tag == .windows) {
if (rc == windows.ws2_32.SOCKET_ERROR) {
switch (windows.ws2_32.WSAGetLastError()) {
.WSANOTINITIALISED => unreachable,
.WSAECONNRESET => return error.ConnectionResetByPeer,
.WSAEINVAL => return error.SocketNotBound,
.WSAEMSGSIZE => return error.MessageTooBig,
.WSAENETDOWN => return error.NetworkSubsystemFailed,
.WSAENOTCONN => return error.SocketNotConnected,
.WSAEWOULDBLOCK => return error.WouldBlock,
// TODO: handle more errors
else => |err| return windows.unexpectedWSAError(err),
}
} else {
return @intCast(usize, rc);
}
} else {
switch (errno(rc)) {
0 => return @intCast(usize, rc),
EBADF => unreachable, // always a race condition
EFAULT => unreachable,
EINVAL => unreachable,
ENOTCONN => unreachable,
ENOTSOCK => unreachable,
EINTR => continue,
EAGAIN => return error.WouldBlock,
ENOMEM => return error.SystemResources,
ECONNREFUSED => return error.ConnectionRefused,
else => |err| return unexpectedErrno(err),
}
}
}
}

15
lib/std/os/bits/windows.zig
View File

@ -172,7 +172,7 @@ pub const AT_REMOVEDIR = 0x200;
pub const in_port_t = u16;
pub const sa_family_t = ws2_32.ADDRESS_FAMILY;
pub const socklen_t = u32;
pub const socklen_t = ws2_32.socklen_t;
pub const sockaddr = ws2_32.sockaddr;
pub const sockaddr_in = ws2_32.sockaddr_in;
@ -243,6 +243,19 @@ pub const IPPROTO_UDP = ws2_32.IPPROTO_UDP;
pub const IPPROTO_ICMPV6 = ws2_32.IPPROTO_ICMPV6;
pub const IPPROTO_RM = ws2_32.IPPROTO_RM;
pub const pollfd = ws2_32.pollfd;
pub const POLLRDNORM = ws2_32.POLLRDNORM;
pub const POLLRDBAND = ws2_32.POLLRDBAND;
pub const POLLIN = ws2_32.POLLIN;
pub const POLLPRI = ws2_32.POLLPRI;
pub const POLLWRNORM = ws2_32.POLLWRNORM;
pub const POLLOUT = ws2_32.POLLOUT;
pub const POLLWRBAND = ws2_32.POLLWRBAND;
pub const POLLERR = ws2_32.POLLERR;
pub const POLLHUP = ws2_32.POLLHUP;
pub const POLLNVAL = ws2_32.POLLNVAL;
pub const O_RDONLY = 0o0;
pub const O_WRONLY = 0o1;
pub const O_RDWR = 0o2;

42
lib/std/os/windows.zig
View File

@ -1157,6 +1157,14 @@ pub fn WSASocketW(
return rc;
}
pub fn bind(s: ws2_32.SOCKET, name: *const ws2_32.sockaddr, namelen: ws2_32.socklen_t) i32 {
return ws2_32.bind(s, name, @intCast(i32, namelen));
}
pub fn listen(s: ws2_32.SOCKET, backlog: u31) i32 {
return ws2_32.listen(s, backlog);
}
pub fn closesocket(s: ws2_32.SOCKET) !void {
switch (ws2_32.closesocket(s)) {
0 => {},
@ -1167,6 +1175,40 @@ pub fn closesocket(s: ws2_32.SOCKET) !void {
}
}
pub fn accept(s: ws2_32.SOCKET, name: ?*ws2_32.sockaddr, namelen: ?*ws2_32.socklen_t) ws2_32.SOCKET {
assert((name == null) == (namelen == null));
return ws2_32.accept(s, name, @ptrCast(?*i32, namelen));
}
pub fn getsockname(s: ws2_32.SOCKET, name: *ws2_32.sockaddr, namelen: *ws2_32.socklen_t) i32 {
return ws2_32.getsockname(s, name, @ptrCast(*i32, namelen));
}
pub fn sendto(s: ws2_32.SOCKET, buf: [*]const u8, len: usize, flags: u32, to: ?*const ws2_32.sockaddr, to_len: ws2_32.socklen_t) i32 {
var buffer = ws2_32.WSABUF{ .len = @truncate(u31, len), .buf = @intToPtr([*]u8, @ptrToInt(buf)) };
var bytes_send: DWORD = undefined;
if (ws2_32.WSASendTo(s, @ptrCast([*]ws2_32.WSABUF, &buffer), 1, &bytes_send, flags, to, @intCast(i32, to_len), null, null) == ws2_32.SOCKET_ERROR) {
return ws2_32.SOCKET_ERROR;
} else {
return @as(i32, @intCast(u31, bytes_send));
}
}
pub fn recvfrom(s: ws2_32.SOCKET, buf: [*]u8, len: usize, flags: u32, from: ?*ws2_32.sockaddr, from_len: ?*ws2_32.socklen_t) i32 {
var buffer = ws2_32.WSABUF{ .len = @truncate(u31, len), .buf = buf };
var bytes_received: DWORD = undefined;
var flags_inout = flags;
if (ws2_32.WSARecvFrom(s, @ptrCast([*]ws2_32.WSABUF, &buffer), 1, &bytes_received, &flags_inout, from, from_len, null, null) == ws2_32.SOCKET_ERROR) {
return ws2_32.SOCKET_ERROR;
} else {
return @as(i32, @intCast(u31, bytes_received));
}
}
pub fn poll(fds: [*]ws2_32.pollfd, n: usize, timeout: i32) i32 {
return ws2_32.WSAPoll(fds, @intCast(u32, n), timeout);
}
pub fn WSAIoctl(
s: ws2_32.SOCKET,
dwIoControlCode: DWORD,

48
lib/std/os/windows/ws2_32.zig
View File

@ -116,7 +116,7 @@ pub const WSAOVERLAPPED_COMPLETION_ROUTINE = fn (dwError: DWORD, cbTransferred:
pub const ADDRESS_FAMILY = u16;
// Microsoft use the signed c_int for this, but it should never be negative
const socklen_t = u32;
pub const socklen_t = u32;
pub const AF_UNSPEC = 0;
pub const AF_UNIX = 1;
@ -234,6 +234,27 @@ pub const WSAMSG = extern struct {
dwFlags: DWORD,
};
pub const pollfd = extern struct {
fd: SOCKET,
events: SHORT,
revents: SHORT,
};
// Event flag definitions for WSAPoll().
pub const POLLRDNORM = 0x0100;
pub const POLLRDBAND = 0x0200;
pub const POLLIN = (POLLRDNORM | POLLRDBAND);
pub const POLLPRI = 0x0400;
pub const POLLWRNORM = 0x0010;
pub const POLLOUT = (POLLWRNORM);
pub const POLLWRBAND = 0x0020;
pub const POLLERR = 0x0001;
pub const POLLHUP = 0x0002;
pub const POLLNVAL = 0x0004;
// https://docs.microsoft.com/en-au/windows/win32/winsock/windows-sockets-error-codes-2
pub const WinsockError = extern enum(u16) {
/// Specified event object handle is invalid.
@ -734,12 +755,21 @@ pub extern "ws2_32" fn WSAIoctl(
pub extern "ws2_32" fn accept(
s: SOCKET,
addr: ?*sockaddr,
addrlen: socklen_t,
addrlen: ?*c_int,
) callconv(.Stdcall) SOCKET;
pub extern "ws2_32" fn bind(
s: SOCKET,
addr: ?*const sockaddr,
addrlen: c_int,
) callconv(.Stdcall) c_int;
pub extern "ws2_32" fn connect(
s: SOCKET,
name: *const sockaddr,
namelen: socklen_t,
namelen: c_int,
) callconv(.Stdcall) c_int;
pub extern "ws2_32" fn listen(
s: SOCKET,
backlog: c_int,
) callconv(.Stdcall) c_int;
pub extern "ws2_32" fn WSARecv(
s: SOCKET,
@ -777,10 +807,15 @@ pub extern "ws2_32" fn WSASendTo(
lpNumberOfBytesSent: ?*DWORD,
dwFlags: DWORD,
lpTo: ?*const sockaddr,
iTolen: socklen_t,
iTolen: c_int,
lpOverlapped: ?*WSAOVERLAPPED,
lpCompletionRoutine: ?WSAOVERLAPPED_COMPLETION_ROUTINE,
) callconv(.Stdcall) c_int;
pub extern "ws2_32" fn WSAPoll(
fdArray: [*]pollfd,
fds: c_ulong,
timeout: c_int,
) callconv(.Stdcall) c_int;
pub extern "ws2_32" fn getaddrinfo(
pNodeName: [*:0]const u8,
pServiceName: [*:0]const u8,
@ -795,3 +830,8 @@ pub extern "ws2_32" fn ioctlsocket(
cmd: c_long,
argp: *c_ulong,
) callconv(.Stdcall) c_int;
pub extern "ws2_32" fn getsockname(
s: SOCKET,
name: *sockaddr,
namelen: *c_int,
) callconv(.Stdcall) c_int;