From f64808c38509057d504546a57b5011c3a7555657 Mon Sep 17 00:00:00 2001
From: Simon Goldschmidt <goldsimon@gmx.de>
Date: Wed, 24 Aug 2011 21:12:12 +0200
Subject: [PATCH] fixed bug #33956 Wrong error returned when calling accept()
 on UDP connections

---
 CHANGELOG         | 4 ++++
 src/api/api_msg.c | 2 ++
 src/api/sockets.c | 8 ++++++++
 3 files changed, 14 insertions(+)

diff --git a/CHANGELOG b/CHANGELOG
index fcfde34b..73f38413 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -41,6 +41,10 @@ HISTORY
 
  ++ Bugfixes:
 
+  2011-08-24: Simon Goldschmidt
+  * api_msg.c, sockets.c: fixed bug #33956 Wrong error returned when calling
+    accept() on UDP connections
+
   2011-08-24: Simon Goldschmidt
   * sockets.h: fixed bug #34057 socklen_t should be a typedef
 
diff --git a/src/api/api_msg.c b/src/api/api_msg.c
index 54fbabcf..7cffe3eb 100644
--- a/src/api/api_msg.c
+++ b/src/api/api_msg.c
@@ -1095,6 +1095,8 @@ do_listen(struct api_msg_msg *msg)
             }
           }
         }
+      } else {
+        msg->err = ERR_ARG;
       }
     }
   }
diff --git a/src/api/sockets.c b/src/api/sockets.c
index e3e01ca4..2982f191 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -407,6 +407,10 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
   err = netconn_accept(sock->conn, &newconn);
   if (err != ERR_OK) {
     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): netconn_acept failed, err=%d\n", s, err));
+    if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
+      sock_set_errno(sock, EOPNOTSUPP);
+      return EOPNOTSUPP;
+    }
     sock_set_errno(sock, err_to_errno(err));
     return -1;
   }
@@ -611,6 +615,10 @@ lwip_listen(int s, int backlog)
 
   if (err != ERR_OK) {
     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d) failed, err=%d\n", s, err));
+    if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
+      sock_set_errno(sock, EOPNOTSUPP);
+      return EOPNOTSUPP;
+    }
     sock_set_errno(sock, err_to_errno(err));
     return -1;
   }
-- 
2.39.2