Xen devel - Jul 2009 - closed each side of the socket when cross migration

when migrate simultaneously on two host, the first migrate will not complete for
socket refuse to be closed for unfinished  read/write operator. So below patch
will fix this bug:
Signed-off-by: James Song(Song Wei) <jsong@novell.com>
 
--- a/tools/python/xen/xend/XendDomain.py
+++ b/tools/python/xen/xend/XendDomain.py
@@ -1361,7 +1361,7 @@ class XendDomain:
                 XendCheckpoint.save(sock.fileno(), dominfo, True, live,
                                     dst, node=node)
             finally:
-                sock.close()
+                sock.shutdown(SHUT_RDWR)
 
     def domain_save(self, domid, dst, checkpoint=False, force=False):
         """Start saving a domain to file.


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