diff -rup Python-2.5.1-orig/Modules/socketmodule.c Python-2.5.1/Modules/socketmodule.c

--- Python-2.5.1-orig/Modules/socketmodule.c	2008-03-25 09:59:38.000000000 -0400

+++ Python-2.5.1/Modules/socketmodule.c	2008-03-25 10:12:24.000000000 -0400

@@ -4977,6 +4977,15 @@ init_socket(void)

 #ifdef	TCP_QUICKACK

 	PyModule_AddIntConstant(m, "TCP_QUICKACK", TCP_QUICKACK);

 #endif

+#ifdef	TCP_CONGESTION

+	PyModule_AddIntConstant(m, "TCP_CONGESTION", TCP_CONGESTION);

+#endif

+#ifdef	TCP_MD5SIG

+	PyModule_AddIntConstant(m, "TCP_MD5SIG", TCP_MD5SIG);

+#endif

+#ifdef	TCP_MD5SIG_MAXKEYLEN

+	PyModule_AddIntConstant(m, "TCP_MD5SIG_MAXKEYLEN", TCP_MD5SIG_MAXKEYLEN);

+#endif

 	/* IPX options */

Only in Python-2.5.1/Modules: socketmodule.c~