--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/src/win/stream.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,252 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+
+#include "uv.h"
+#include "internal.h"
+#include "handle-inl.h"
+#include "req-inl.h"
+
+
+int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb) {
+  int err;
+  if (uv__is_closing(stream)) {
+    return UV_EINVAL;
+  }
+  err = ERROR_INVALID_PARAMETER;
+  switch (stream->type) {
+    case UV_TCP:
+      err = uv__tcp_listen((uv_tcp_t*)stream, backlog, cb);
+      break;
+    case UV_NAMED_PIPE:
+      err = uv__pipe_listen((uv_pipe_t*)stream, backlog, cb);
+      break;
+    default:
+      assert(0);
+  }
+
+  return uv_translate_sys_error(err);
+}
+
+
+int uv_accept(uv_stream_t* server, uv_stream_t* client) {
+  int err;
+
+  err = ERROR_INVALID_PARAMETER;
+  switch (server->type) {
+    case UV_TCP:
+      err = uv__tcp_accept((uv_tcp_t*)server, (uv_tcp_t*)client);
+      break;
+    case UV_NAMED_PIPE:
+      err = uv__pipe_accept((uv_pipe_t*)server, client);
+      break;
+    default:
+      assert(0);
+  }
+
+  return uv_translate_sys_error(err);
+}
+
+
+int uv__read_start(uv_stream_t* handle,
+                   uv_alloc_cb alloc_cb,
+                   uv_read_cb read_cb) {
+  int err;
+
+  err = ERROR_INVALID_PARAMETER;
+  switch (handle->type) {
+    case UV_TCP:
+      err = uv__tcp_read_start((uv_tcp_t*)handle, alloc_cb, read_cb);
+      break;
+    case UV_NAMED_PIPE:
+      err = uv__pipe_read_start((uv_pipe_t*)handle, alloc_cb, read_cb);
+      break;
+    case UV_TTY:
+      err = uv__tty_read_start((uv_tty_t*) handle, alloc_cb, read_cb);
+      break;
+    default:
+      assert(0);
+  }
+
+  return uv_translate_sys_error(err);
+}
+
+
+int uv_read_stop(uv_stream_t* handle) {
+  int err;
+
+  if (!(handle->flags & UV_HANDLE_READING))
+    return 0;
+
+  err = 0;
+  if (handle->type == UV_TTY) {
+    err = uv__tty_read_stop((uv_tty_t*) handle);
+  } else if (handle->type == UV_NAMED_PIPE) {
+    uv__pipe_read_stop((uv_pipe_t*) handle);
+  } else {
+    handle->flags &= ~UV_HANDLE_READING;
+    DECREASE_ACTIVE_COUNT(handle->loop, handle);
+  }
+
+  return uv_translate_sys_error(err);
+}
+
+
+int uv_write(uv_write_t* req,
+             uv_stream_t* handle,
+             const uv_buf_t bufs[],
+             unsigned int nbufs,
+             uv_write_cb cb) {
+  uv_loop_t* loop = handle->loop;
+  int err;
+
+  if (!(handle->flags & UV_HANDLE_WRITABLE)) {
+    return UV_EPIPE;
+  }
+
+  err = ERROR_INVALID_PARAMETER;
+  switch (handle->type) {
+    case UV_TCP:
+      err = uv__tcp_write(loop, req, (uv_tcp_t*) handle, bufs, nbufs, cb);
+      break;
+    case UV_NAMED_PIPE:
+      err = uv__pipe_write(
+          loop, req, (uv_pipe_t*) handle, bufs, nbufs, NULL, cb);
+      return uv_translate_write_sys_error(err);
+    case UV_TTY:
+      err = uv__tty_write(loop, req, (uv_tty_t*) handle, bufs, nbufs, cb);
+      break;
+    default:
+      assert(0);
+  }
+
+  return uv_translate_sys_error(err);
+}
+
+
+int uv_write2(uv_write_t* req,
+              uv_stream_t* handle,
+              const uv_buf_t bufs[],
+              unsigned int nbufs,
+              uv_stream_t* send_handle,
+              uv_write_cb cb) {
+  uv_loop_t* loop = handle->loop;
+  int err;
+
+  if (send_handle == NULL) {
+    return uv_write(req, handle, bufs, nbufs, cb);
+  }
+
+  if (handle->type != UV_NAMED_PIPE || !((uv_pipe_t*) handle)->ipc) {
+    return UV_EINVAL;
+  } else if (!(handle->flags & UV_HANDLE_WRITABLE)) {
+    return UV_EPIPE;
+  }
+
+  err = uv__pipe_write(
+      loop, req, (uv_pipe_t*) handle, bufs, nbufs, send_handle, cb);
+  return uv_translate_write_sys_error(err);
+}
+
+
+int uv_try_write(uv_stream_t* stream,
+                 const uv_buf_t bufs[],
+                 unsigned int nbufs) {
+  if (stream->flags & UV_HANDLE_CLOSING)
+    return UV_EBADF;
+  if (!(stream->flags & UV_HANDLE_WRITABLE))
+    return UV_EPIPE;
+
+  switch (stream->type) {
+    case UV_TCP:
+      return uv__tcp_try_write((uv_tcp_t*) stream, bufs, nbufs);
+    case UV_TTY:
+      return uv__tty_try_write((uv_tty_t*) stream, bufs, nbufs);
+    case UV_NAMED_PIPE:
+      return UV_EAGAIN;
+    default:
+      assert(0);
+      return UV_ENOSYS;
+  }
+}
+
+
+int uv_try_write2(uv_stream_t* stream,
+                  const uv_buf_t bufs[],
+                  unsigned int nbufs,
+                  uv_stream_t* send_handle) {
+  if (send_handle != NULL)
+    return UV_EAGAIN;
+  return uv_try_write(stream, bufs, nbufs);
+}
+
+
+int uv_shutdown(uv_shutdown_t* req, uv_stream_t* handle, uv_shutdown_cb cb) {
+  uv_loop_t* loop = handle->loop;
+
+  if (!(handle->flags & UV_HANDLE_WRITABLE) ||
+      uv__is_stream_shutting(handle) ||
+      uv__is_closing(handle)) {
+    return UV_ENOTCONN;
+  }
+
+  UV_REQ_INIT(req, UV_SHUTDOWN);
+  req->handle = handle;
+  req->cb = cb;
+
+  handle->flags &= ~UV_HANDLE_WRITABLE;
+  handle->stream.conn.shutdown_req = req;
+  handle->reqs_pending++;
+  REGISTER_HANDLE_REQ(loop, handle);
+
+  if (handle->stream.conn.write_reqs_pending == 0) {
+    if (handle->type == UV_NAMED_PIPE)
+      uv__pipe_shutdown(loop, (uv_pipe_t*) handle, req);
+    else
+      uv__insert_pending_req(loop, (uv_req_t*) req);
+  }
+
+  return 0;
+}
+
+
+int uv_is_readable(const uv_stream_t* handle) {
+  return !!(handle->flags & UV_HANDLE_READABLE);
+}
+
+
+int uv_is_writable(const uv_stream_t* handle) {
+  return !!(handle->flags & UV_HANDLE_WRITABLE);
+}
+
+
+int uv_stream_set_blocking(uv_stream_t* handle, int blocking) {
+  if (handle->type != UV_NAMED_PIPE)
+    return UV_EINVAL;
+
+  if (blocking != 0)
+    handle->flags |= UV_HANDLE_BLOCKING_WRITES;
+  else
+    handle->flags &= ~UV_HANDLE_BLOCKING_WRITES;
+
+  return 0;
+}