From a5be8fe82c213ecdac71146a8029b6f51ec4db9d Mon Sep 17 00:00:00 2001
From: kieranm <kieranm>
Date: Mon, 31 Mar 2003 09:34:56 +0000
Subject: [PATCH] Fixed bug in netconn_peer (test pcb for NULL before
 accessing)

---
 src/api/api_lib.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/api/api_lib.c b/src/api/api_lib.c
index 795d7c8a..e2d3e03d 100644
--- a/src/api/api_lib.c
+++ b/src/api/api_lib.c
@@ -301,12 +301,15 @@ netconn_peer(struct netconn *conn, struct ip_addr *addr,
   case NETCONN_UDPLITE:
   case NETCONN_UDPNOCHKSUM:
   case NETCONN_UDP:
-    if ((conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0)
-     return -1;
+    if (conn->pcb.udp == NULL ||
+	((conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0))
+     return ERR_CONN;
     *addr = (conn->pcb.udp->remote_ip);
     *port = conn->pcb.udp->remote_port;
     break;
   case NETCONN_TCP:
+    if(conn->pcb.tcp == NULL)
+      return ERR_CONN;
     *addr = (conn->pcb.tcp->remote_ip);
     *port = conn->pcb.tcp->remote_port;
     break;