From 9852907d33a8dcf5ba157553e9e33d41c2b3ccc9 Mon Sep 17 00:00:00 2001
From: Tom Goff <tgoff@tgoff.net>
Date: Fri, 13 Dec 2013 22:50:35 -0800
Subject: [PATCH] bug 1767:  make UDP sockets return error when binding to
 address already in use

---
 src/internet/model/udp-socket-impl.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/internet/model/udp-socket-impl.cc b/src/internet/model/udp-socket-impl.cc
index ab6895d4d..464a96d68 100644
--- a/src/internet/model/udp-socket-impl.cc
+++ b/src/internet/model/udp-socket-impl.cc
@@ -247,6 +247,11 @@ UdpSocketImpl::Bind (const Address &address)
         {
           m_endPoint = m_udp->Allocate (ipv4, port);
         }
+      if (0 == m_endPoint)
+        {
+          m_errno = port ? ERROR_ADDRINUSE : ERROR_ADDRNOTAVAIL;
+          return -1;
+        }
     }
   else if (Inet6SocketAddress::IsMatchingType (address))
     {
@@ -269,6 +274,11 @@ UdpSocketImpl::Bind (const Address &address)
         {
           m_endPoint6 = m_udp->Allocate6 (ipv6, port);
         }
+      if (0 == m_endPoint6)
+        {
+          m_errno = port ? ERROR_ADDRINUSE : ERROR_ADDRNOTAVAIL;
+          return -1;
+        }
     }
   else
     {