--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-getsockname.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,362 @@
+/* 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static const int server_port = TEST_PORT;
+/* Will be updated right after making the uv_connect_call */
+static int connect_port = -1;
+
+static int getsocknamecount_tcp = 0;
+static int getpeernamecount = 0;
+static int getsocknamecount_udp = 0;
+
+static uv_loop_t* loop;
+static uv_tcp_t tcp;
+static uv_udp_t udp;
+static uv_connect_t connect_req;
+static uv_tcp_t tcpServer;
+static uv_udp_t udpServer;
+static uv_udp_send_t send_req;
+
+
+static void alloc(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf) {
+  buf->base = malloc(suggested_size);
+  buf->len = suggested_size;
+}
+
+
+static void on_close(uv_handle_t* peer) {
+  free(peer);
+  uv_close((uv_handle_t*)&tcpServer, NULL);
+}
+
+
+static void after_shutdown(uv_shutdown_t* req, int status) {
+  uv_close((uv_handle_t*) req->handle, on_close);
+  free(req);
+}
+
+
+static void after_read(uv_stream_t* handle,
+                       ssize_t nread,
+                       const uv_buf_t* buf) {
+  uv_shutdown_t* req;
+  int r;
+
+  if (buf->base) {
+    free(buf->base);
+  }
+
+  req = (uv_shutdown_t*) malloc(sizeof *req);
+  r = uv_shutdown(req, handle, after_shutdown);
+  ASSERT_OK(r);
+}
+
+
+static void check_sockname(struct sockaddr* addr, const char* compare_ip,
+  int compare_port, const char* context) {
+  struct sockaddr_in check_addr = *(struct sockaddr_in*) addr;
+  struct sockaddr_in compare_addr;
+  char check_ip[17];
+  int r;
+
+  ASSERT_OK(uv_ip4_addr(compare_ip, compare_port, &compare_addr));
+
+  /* Both addresses should be ipv4 */
+  ASSERT_EQ(check_addr.sin_family, AF_INET);
+  ASSERT_EQ(compare_addr.sin_family, AF_INET);
+
+  /* Check if the ip matches */
+  ASSERT_OK(memcmp(&check_addr.sin_addr,
+            &compare_addr.sin_addr,
+            sizeof compare_addr.sin_addr));
+
+  /* Check if the port matches. If port == 0 anything goes. */
+  ASSERT(compare_port == 0 || check_addr.sin_port == compare_addr.sin_port);
+
+  r = uv_ip4_name(&check_addr, (char*) check_ip, sizeof check_ip);
+  ASSERT_OK(r);
+
+  printf("%s: %s:%d\n", context, check_ip, ntohs(check_addr.sin_port));
+}
+
+
+static void on_connection(uv_stream_t* server, int status) {
+  struct sockaddr sockname, peername;
+  int namelen;
+  uv_tcp_t* handle;
+  int r;
+
+  if (status != 0) {
+    fprintf(stderr, "Connect error %s\n", uv_err_name(status));
+  }
+  ASSERT_OK(status);
+
+  handle = malloc(sizeof(*handle));
+  ASSERT_NOT_NULL(handle);
+
+  r = uv_tcp_init(loop, handle);
+  ASSERT_OK(r);
+
+  /* associate server with stream */
+  handle->data = server;
+
+  r = uv_accept(server, (uv_stream_t*)handle);
+  ASSERT_OK(r);
+
+  namelen = sizeof sockname;
+  r = uv_tcp_getsockname(handle, &sockname, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&sockname, "127.0.0.1", server_port, "accepted socket");
+  getsocknamecount_tcp++;
+
+  namelen = sizeof peername;
+  r = uv_tcp_getpeername(handle, &peername, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&peername, "127.0.0.1", connect_port, "accepted socket peer");
+  getpeernamecount++;
+
+  r = uv_read_start((uv_stream_t*)handle, alloc, after_read);
+  ASSERT_OK(r);
+}
+
+
+static void on_connect(uv_connect_t* req, int status) {
+  struct sockaddr sockname, peername;
+  int r, namelen;
+
+  ASSERT_OK(status);
+
+  namelen = sizeof sockname;
+  r = uv_tcp_getsockname((uv_tcp_t*) req->handle, &sockname, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&sockname, "127.0.0.1", 0, "connected socket");
+  getsocknamecount_tcp++;
+
+  namelen = sizeof peername;
+  r = uv_tcp_getpeername((uv_tcp_t*) req->handle, &peername, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&peername, "127.0.0.1", server_port, "connected socket peer");
+  getpeernamecount++;
+
+  uv_close((uv_handle_t*)&tcp, NULL);
+}
+
+
+static int tcp_listener(void) {
+  struct sockaddr_in addr;
+  struct sockaddr sockname, peername;
+  int namelen;
+  int r;
+
+  ASSERT_OK(uv_ip4_addr("0.0.0.0", server_port, &addr));
+
+  r = uv_tcp_init(loop, &tcpServer);
+  if (r) {
+    fprintf(stderr, "Socket creation error\n");
+    return 1;
+  }
+
+  r = uv_tcp_bind(&tcpServer, (const struct sockaddr*) &addr, 0);
+  if (r) {
+    fprintf(stderr, "Bind error\n");
+    return 1;
+  }
+
+  r = uv_listen((uv_stream_t*)&tcpServer, 128, on_connection);
+  if (r) {
+    fprintf(stderr, "Listen error\n");
+    return 1;
+  }
+
+  memset(&sockname, -1, sizeof sockname);
+  namelen = sizeof sockname;
+  r = uv_tcp_getsockname(&tcpServer, &sockname, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&sockname, "0.0.0.0", server_port, "server socket");
+  getsocknamecount_tcp++;
+
+  namelen = sizeof sockname;
+  r = uv_tcp_getpeername(&tcpServer, &peername, &namelen);
+  ASSERT_EQ(r, UV_ENOTCONN);
+  getpeernamecount++;
+
+  return 0;
+}
+
+
+static void tcp_connector(void) {
+  struct sockaddr_in server_addr;
+  struct sockaddr sockname;
+  int r, namelen;
+
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", server_port, &server_addr));
+
+  r = uv_tcp_init(loop, &tcp);
+  tcp.data = &connect_req;
+  ASSERT(!r);
+
+  r = uv_tcp_connect(&connect_req,
+                     &tcp,
+                     (const struct sockaddr*) &server_addr,
+                     on_connect);
+  ASSERT(!r);
+
+  /* Fetch the actual port used by the connecting socket. */
+  namelen = sizeof sockname;
+  r = uv_tcp_getsockname(&tcp, &sockname, &namelen);
+  ASSERT(!r);
+  ASSERT_EQ(sockname.sa_family, AF_INET);
+  connect_port = ntohs(((struct sockaddr_in*) &sockname)->sin_port);
+  ASSERT_GT(connect_port, 0);
+}
+
+
+static void udp_recv(uv_udp_t* handle,
+                     ssize_t nread,
+                     const uv_buf_t* buf,
+                     const struct sockaddr* addr,
+                     unsigned flags) {
+  struct sockaddr sockname;
+  int namelen;
+  int r;
+
+  ASSERT_GE(nread, 0);
+  free(buf->base);
+
+  if (nread == 0) {
+    return;
+  }
+
+  memset(&sockname, -1, sizeof sockname);
+  namelen = sizeof(sockname);
+  r = uv_udp_getsockname(&udp, &sockname, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&sockname, "0.0.0.0", 0, "udp receiving socket");
+  getsocknamecount_udp++;
+
+  uv_close((uv_handle_t*) &udp, NULL);
+  uv_close((uv_handle_t*) handle, NULL);
+}
+
+
+static void udp_send(uv_udp_send_t* req, int status) {
+
+}
+
+
+static int udp_listener(void) {
+  struct sockaddr_in addr;
+  struct sockaddr sockname;
+  int namelen;
+  int r;
+
+  ASSERT_OK(uv_ip4_addr("0.0.0.0", server_port, &addr));
+
+  r = uv_udp_init(loop, &udpServer);
+  if (r) {
+    fprintf(stderr, "Socket creation error\n");
+    return 1;
+  }
+
+  r = uv_udp_bind(&udpServer, (const struct sockaddr*) &addr, 0);
+  if (r) {
+    fprintf(stderr, "Bind error\n");
+    return 1;
+  }
+
+  memset(&sockname, -1, sizeof sockname);
+  namelen = sizeof sockname;
+  r = uv_udp_getsockname(&udpServer, &sockname, &namelen);
+  ASSERT_OK(r);
+  check_sockname(&sockname, "0.0.0.0", server_port, "udp listener socket");
+  getsocknamecount_udp++;
+
+  r = uv_udp_recv_start(&udpServer, alloc, udp_recv);
+  ASSERT_OK(r);
+
+  return 0;
+}
+
+
+static void udp_sender(void) {
+  struct sockaddr_in server_addr;
+  uv_buf_t buf;
+  int r;
+
+  r = uv_udp_init(loop, &udp);
+  ASSERT(!r);
+
+  buf = uv_buf_init("PING", 4);
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", server_port, &server_addr));
+
+  r = uv_udp_send(&send_req,
+                  &udp,
+                  &buf,
+                  1,
+                  (const struct sockaddr*) &server_addr,
+                  udp_send);
+  ASSERT(!r);
+}
+
+
+TEST_IMPL(getsockname_tcp) {
+  loop = uv_default_loop();
+
+  if (tcp_listener())
+    return 1;
+
+  tcp_connector();
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  ASSERT_EQ(3, getsocknamecount_tcp);
+  ASSERT_EQ(3, getpeernamecount);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+
+TEST_IMPL(getsockname_udp) {
+  loop = uv_default_loop();
+
+  if (udp_listener())
+    return 1;
+
+  udp_sender();
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  ASSERT_EQ(2, getsocknamecount_udp);
+
+  ASSERT_OK(udp.send_queue_size);
+  ASSERT_OK(udpServer.send_queue_size);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}