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std.Io.Threaded: implement netRead for Windows

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This commit is contained in:
Andrew Kelley 2025-10-26 12:04:52 -07:00
parent a8f95e5176
commit 6cff32c7ee
1 changed files with 80 additions and 14 deletions
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94
lib/std/Io/Threaded.zig
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@ -2976,7 +2976,7 @@ fn netListenIpWindows(
if (rc != ws2_32.SOCKET_ERROR) break;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -2998,7 +2998,7 @@ fn netListenIpWindows(
if (rc != ws2_32.SOCKET_ERROR) break;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3231,7 +3231,7 @@ fn wsaGetSockName(t: *Threaded, handle: ws2_32.SOCKET, addr: *ws2_32.sockaddr, a
if (rc != ws2_32.SOCKET_ERROR) break;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3270,7 +3270,7 @@ fn setSocketOptionWsa(t: *Threaded, socket: Io.net.Socket.Handle, level: i32, op
if (rc != ws2_32.SOCKET_ERROR) return;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3331,7 +3331,7 @@ fn netConnectIpWindows(
if (rc != ws2_32.SOCKET_ERROR) break;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3454,7 +3454,7 @@ fn netBindIpWindows(
if (rc != ws2_32.SOCKET_ERROR) break;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3560,7 +3560,7 @@ fn openSocketWsa(t: *Threaded, family: posix.sa_family_t, options: IpAddress.Bin
if (rc != ws2_32.INVALID_SOCKET) return rc;
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3639,7 +3639,7 @@ fn netAcceptWindows(userdata: ?*anyopaque, listen_handle: net.Socket.Handle) net
} };
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -3728,10 +3728,76 @@ fn netReadPosix(userdata: ?*anyopaque, fd: net.Socket.Handle, data: [][]u8) net.
fn netReadWindows(userdata: ?*anyopaque, handle: net.Socket.Handle, data: [][]u8) net.Stream.Reader.Error!usize {
if (!have_networking) return error.NetworkDown;
const t: *Threaded = @ptrCast(@alignCast(userdata));
_ = t;
_ = handle;
_ = data;
@panic("TODO implement netReadWindows");
const bufs = b: {
var iovec_buffer: [max_iovecs_len]ws2_32.WSABUF = undefined;
var i: usize = 0;
var n: usize = 0;
for (data) |buf| {
if (iovec_buffer.len - i == 0) break;
if (buf.len == 0) continue;
if (std.math.cast(u32, buf.len)) |len| {
iovec_buffer[i] = .{ .buf = buf.ptr, .len = len };
i += 1;
n += len;
continue;
}
iovec_buffer[i] = .{ .buf = buf.ptr, .len = std.math.maxInt(u32) };
i += 1;
n += std.math.maxInt(u32);
break;
}
const bufs = iovec_buffer[0..i];
assert(bufs[0].len != 0);
break :b bufs;
};
while (true) {
try t.checkCancel();
var flags: u32 = 0;
var overlapped: windows.OVERLAPPED = std.mem.zeroes(windows.OVERLAPPED);
var n: u32 = undefined;
const rc = ws2_32.WSARecv(handle, bufs.ptr, @intCast(bufs.len), &n, &flags, &overlapped, null);
if (rc != ws2_32.SOCKET_ERROR) return n;
const wsa_error: ws2_32.WinsockError = switch (ws2_32.WSAGetLastError()) {
.IO_PENDING => e: {
var result_flags: u32 = undefined;
const overlapped_rc = ws2_32.WSAGetOverlappedResult(
handle,
&overlapped,
&n,
windows.TRUE,
&result_flags,
);
if (overlapped_rc == windows.FALSE) {
break :e ws2_32.WSAGetLastError();
} else {
return n;
}
},
else => |err| err,
};
switch (wsa_error) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
},
.ECONNRESET => return error.ConnectionResetByPeer,
.EFAULT => unreachable, // a pointer is not completely contained in user address space.
.EINVAL => |err| return wsaErrorBug(err),
.EMSGSIZE => |err| return wsaErrorBug(err),
.ENETDOWN => return error.NetworkDown,
.ENETRESET => return error.ConnectionResetByPeer,
.ENOTCONN => return error.SocketUnconnected,
else => |err| return windows.unexpectedWSAError(err),
}
}
}
fn netReadUnavailable(userdata: ?*anyopaque, fd: net.Socket.Handle, data: [][]u8) net.Stream.Reader.Error!usize {
@ -3823,7 +3889,7 @@ fn netSendOne(
if (rc == ws2_32.SOCKET_ERROR) {
switch (ws2_32.WSAGetLastError()) {
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;
@ -4422,7 +4488,7 @@ fn netLookupFallible(
switch (rc) {
@as(ws2_32.WinsockError, @enumFromInt(0)) => break,
.EINTR => continue,
.ECANCELLED, .E_CANCELLED => return error.Canceled,
.ECANCELLED, .E_CANCELLED, .OPERATION_ABORTED => return error.Canceled,
.NOTINITIALISED => {
try initializeWsa(t);
continue;