From b7eee795b3dec56d736e2d260ec5cbe380e267a9 Mon Sep 17 00:00:00 2001
From: Jon Shallow <supjps-libcoap@jpshallow.com>
Date: Tue, 17 Dec 2024 20:32:46 +0000
Subject: [PATCH] coap_socket_strerror: For Windows, return ascii readable

---
 src/coap_io.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/src/coap_io.c b/src/coap_io.c
index a5c1d950..4e2b7c01 100644
--- a/src/coap_io.c
+++ b/src/coap_io.c
@@ -2026,28 +2026,17 @@ coap_io_pending_lkd(coap_context_t *context) {
   return 0;
 }
 
-#ifdef _WIN32
 const char *
 coap_socket_format_errno(int error) {
-  static char szError[256];
-  if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-                    NULL, (DWORD)error, MAKELANGID(LANG_NEUTRAL,
-                                                   SUBLANG_DEFAULT), (LPSTR)szError, (DWORD)sizeof(szError),
-                    NULL) == 0)
-    strcpy(szError, "Unknown error");
-  return szError;
+  return strerror(error);
 }
-
+#ifdef _WIN32
 const char *
 coap_socket_strerror(void) {
   return coap_socket_format_errno(WSAGetLastError());
 }
 #else /* _WIN32 */
 const char *
-coap_socket_format_errno(int error) {
-  return strerror(error);
-}
-const char *
 coap_socket_strerror(void) {
   return coap_socket_format_errno(errno);
 }