From 95f2d48ac477dbdc4576b11a2f0cdb0f6834996a Mon Sep 17 00:00:00 2001
From: fbernon <fbernon>
Date: Thu, 13 Sep 2007 15:03:42 +0000
Subject: [PATCH] Avoid to lost previous error codes in sockets.c and
 api_lib.c.

---
 src/api/api_lib.c | 6 +++++-
 src/api/sockets.c | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/api/api_lib.c b/src/api/api_lib.c
index 570e9bf2..ec1bd746 100644
--- a/src/api/api_lib.c
+++ b/src/api/api_lib.c
@@ -424,6 +424,7 @@ netconn_recv(struct netconn *conn)
 
 #if LWIP_SO_RCVTIMEO
     if (sys_arch_mbox_fetch(conn->recvmbox, (void *)&p, conn->recv_timeout)==SYS_ARCH_TIMEOUT) {
+      conn->err = ERR_TIMEOUT;
       p = NULL;
     }
 #else
@@ -444,7 +445,10 @@ netconn_recv(struct netconn *conn)
     /* If we are closed, we indicate that we no longer wish to use the socket */
     if (p == NULL) {
       memp_free(MEMP_NETBUF, buf);
-      conn->err = ERR_CLSD;
+      /* Avoid to lost any previous error code */
+      if (conn->err == ERR_OK) {
+        conn->err = ERR_CLSD;
+      }
       return NULL;
     }
 
diff --git a/src/api/sockets.c b/src/api/sockets.c
index bce8b8cd..74ee6086 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -417,7 +417,7 @@ lwip_recvfrom(int s, void *mem, int len, unsigned int flags,
       if (!buf) {
         /* We should really do some error checking here. */
         LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL!\n", s));
-        sock_set_errno(sock, (sock->conn->type==NETCONN_UDP)?ETIMEDOUT:0);
+        sock_set_errno(sock, (((sock->conn->pcb.ip!=NULL) && (sock->conn->err==ERR_OK))?ETIMEDOUT:err_to_errno(sock->conn->err)));
         return 0;
       }
     }