Bug #1531963: Make SocketServer.TCPServer's server_address always be equal to calling getsockname() on the server's socket. Fixed by patch #1545011.

Backported from r54253.

Lib/SocketServer.py

@@ -339,6 +339,7 @@ class TCPServer(BaseServer):
         if self.allow_reuse_address:
             self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         self.socket.bind(self.server_address)
+        self.server_address = self.socket.getsockname()
 
     def server_activate(self):
         """Called by constructor to activate the server.

Lib/test/test_socketserver.py

@@ -84,6 +84,7 @@ class ServerThread(threading.Thread):
         addr = getattr(svr, 'server_address')
         if addr:
             self.__addr = addr
+            assert self.__addr == svr.socket.getsockname()
         if verbose: print "thread: serving three times"
         svr.serve_a_few()
         if verbose: print "thread: done"

Misc/NEWS

@@ -196,6 +196,11 @@ Extension Modules
 
 Library
 -------
+
+- Bug #1531963: Make SocketServer.TCPServer's server_address always
+  be equal to calling getsockname() on the server's socket. Fixed by patch
+  #1545011.
+
 - Bug #1651235: When a tuple was passed to a ctypes function call,
   Python would crash instead of raising an error.