Moved setting of SO_REUSEADDR and added comment

1 files changed, 15 insertions, 0 deletions

diff --git a/cpp/src/Ice/UdpTransceiver.cpp b/cpp/src/Ice/UdpTransceiver.cpp
index 67e2b33bc78..1fa3fb8e5eb 100644
--- a/cpp/src/Ice/UdpTransceiver.cpp
+++ b/cpp/src/Ice/UdpTransceiver.cpp
@@ -474,6 +474,21 @@ IceInternal::UdpTransceiver::UdpTransceiver(const InstancePtr& instance, const s
         }
         else
         {
+#ifndef _WIN32
+            //
+            // Enable SO_REUSEADDR on Unix platforms to allow re-using
+            // the socket even if it's in the TIME_WAIT state. On
+            // Windows, this doesn't appear to be necessary and
+            // enabling SO_REUSEADDR would actually not be a good
+            // thing since it allows a second process to bind to an
+            // address even it's already bound by another process.
+            //
+            // TODO: using SO_EXCLUSIVEADDRUSE on Windows would
+            // probably be better but it's only supported by recent
+            // Windows versions (XP SP2, Windows Server 2003).
+            //
+            setReuseAddress(_fd, true);
+#endif
             doBind(_fd, _addr);
         }