Set the SO_REUSEADDR socket option in the server thread -- this seems

needed on some platforms (e.g. Solaris 8) when the test is run twice
in quick succession.

Lib/test/test_asynchat.py

@@ -10,6 +10,7 @@ class echo_server(threading.Thread):
 
     def run(self):
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         sock.bind((HOST, PORT))
         sock.listen(1)
         conn, client = sock.accept()