From 5f1eb84b33700f40a2201aa584a288fac306cc34 Mon Sep 17 00:00:00 2001
From: Bill Roome <wdr@bell-labs.com>
Date: Mon, 1 Mar 2010 15:43:00 -0500
Subject: [PATCH] [bug 810] Tcp GetSockName() for unconnected sockets

---
 src/internet-stack/tcp-socket-impl.cc | 13 +++++++++++--
 src/internet-stack/udp-socket-impl.cc |  2 ++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/internet-stack/tcp-socket-impl.cc b/src/internet-stack/tcp-socket-impl.cc
index 16c356cec..710a112cf 100644
--- a/src/internet-stack/tcp-socket-impl.cc
+++ b/src/internet-stack/tcp-socket-impl.cc
@@ -630,8 +630,17 @@ int
 TcpSocketImpl::GetSockName (Address &address) const
 {
   NS_LOG_FUNCTION_NOARGS ();
-  address = InetSocketAddress(m_endPoint->GetLocalAddress (), 
-                              m_endPoint->GetLocalPort ());
+  if (m_endPoint != 0)
+    {
+      address = InetSocketAddress (m_endPoint->GetLocalAddress (), 
+                                   m_endPoint->GetLocalPort ());
+    } 
+  else
+    {
+      // It is possible to call this method on a socket without a name
+      // in which case, behavior is unspecified
+      address = InetSocketAddress (Ipv4Address::GetZero (), 0);
+    }
   return 0;
 }
 
diff --git a/src/internet-stack/udp-socket-impl.cc b/src/internet-stack/udp-socket-impl.cc
index f2c015957..e1e2f1d0b 100644
--- a/src/internet-stack/udp-socket-impl.cc
+++ b/src/internet-stack/udp-socket-impl.cc
@@ -531,6 +531,8 @@ UdpSocketImpl::GetSockName (Address &address) const
     }
   else
     {
+      // It is possible to call this method on a socket without a name
+      // in which case, behavior is unspecified
       address = InetSocketAddress(Ipv4Address::GetZero(), 0);
     }
   return 0;