--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-connection-fail.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,161 @@
+/* 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 "uv.h"
+#include "task.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+
+static uv_tcp_t tcp;
+static uv_connect_t req;
+static int connect_cb_calls;
+static int close_cb_calls;
+
+static uv_timer_t timer;
+static int timer_close_cb_calls;
+static int timer_cb_calls;
+
+
+static void on_close(uv_handle_t* handle) {
+  close_cb_calls++;
+}
+
+
+static void timer_close_cb(uv_handle_t* handle) {
+  timer_close_cb_calls++;
+}
+
+
+static void timer_cb(uv_timer_t* handle) {
+  timer_cb_calls++;
+
+  /*
+   * These are the important asserts. The connection callback has been made,
+   * but libuv hasn't automatically closed the socket. The user must
+   * uv_close the handle manually.
+   */
+  ASSERT_OK(close_cb_calls);
+  ASSERT_EQ(1, connect_cb_calls);
+
+  /* Close the tcp handle. */
+  uv_close((uv_handle_t*)&tcp, on_close);
+
+  /* Close the timer. */
+  uv_close((uv_handle_t*)handle, timer_close_cb);
+}
+
+
+static void on_connect_with_close(uv_connect_t *req, int status) {
+  ASSERT_PTR_EQ((uv_stream_t*) &tcp, req->handle);
+  ASSERT_EQ(status, UV_ECONNREFUSED);
+  connect_cb_calls++;
+
+  ASSERT_OK(close_cb_calls);
+  uv_close((uv_handle_t*)req->handle, on_close);
+}
+
+
+static void on_connect_without_close(uv_connect_t *req, int status) {
+  ASSERT_EQ(status, UV_ECONNREFUSED);
+  connect_cb_calls++;
+
+  uv_timer_start(&timer, timer_cb, 100, 0);
+
+  ASSERT_OK(close_cb_calls);
+}
+
+
+static void connection_fail(uv_connect_cb connect_cb) {
+  struct sockaddr_in client_addr, server_addr;
+  int r;
+
+  ASSERT_OK(uv_ip4_addr("0.0.0.0", 0, &client_addr));
+
+  /* There should be no servers listening on this port. */
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));
+
+  /* Try to connect to the server and do NUM_PINGS ping-pongs. */
+  r = uv_tcp_init(uv_default_loop(), &tcp);
+  ASSERT(!r);
+
+  /* We are never doing multiple reads/connects at a time anyway. so these
+   * handles can be pre-initialized. */
+  ASSERT_OK(uv_tcp_bind(&tcp, (const struct sockaddr*) &client_addr, 0));
+
+  r = uv_tcp_connect(&req,
+                     &tcp,
+                     (const struct sockaddr*) &server_addr,
+                     connect_cb);
+  ASSERT(!r);
+
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+
+  ASSERT_EQ(1, connect_cb_calls);
+  ASSERT_EQ(1, close_cb_calls);
+}
+
+
+/*
+ * This test attempts to connect to a port where no server is running. We
+ * expect an error.
+ */
+TEST_IMPL(connection_fail) {
+/* TODO(gengjiawen): Fix test on QEMU. */
+#if defined(__QEMU__)
+  RETURN_SKIP("Test does not currently work in QEMU");
+#endif
+
+  connection_fail(on_connect_with_close);
+
+  ASSERT_OK(timer_close_cb_calls);
+  ASSERT_OK(timer_cb_calls);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+/*
+ * This test is the same as the first except it check that the close
+ * callback of the tcp handle hasn't been made after the failed connection
+ * attempt.
+ */
+TEST_IMPL(connection_fail_doesnt_auto_close) {
+/* TODO(gengjiawen): Fix test on QEMU. */
+#if defined(__QEMU__)
+  RETURN_SKIP("Test does not currently work in QEMU");
+#endif
+
+  int r;
+
+  r = uv_timer_init(uv_default_loop(), &timer);
+  ASSERT_OK(r);
+
+  connection_fail(on_connect_without_close);
+
+  ASSERT_EQ(1, timer_close_cb_calls);
+  ASSERT_EQ(1, timer_cb_calls);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}