Added provisional support for TLS transport

Author: MelindaShore

context.c

@@ -141,7 +141,11 @@ context_set_dns_transport(getdns_context *context, PyObject *py_value)
         return -1;
     }
     if ((value < GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP) ||
+#if defined(WITH_TLS)
+        (value > GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN))  {
+#else        
         (value > GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN))  {
+#endif
         PyErr_SetString(getdns_error, GETDNS_RETURN_INVALID_PARAMETER_TEXT);
         return -1;
     }

getdns.c

@@ -329,6 +329,10 @@ initgetdns(void)
     PyModule_AddIntConstant(g, "TRANSPORT_UDP_ONLY", 541);
     PyModule_AddIntConstant(g, "TRANSPORT_TCP_ONLY", 542);
     PyModule_AddIntConstant(g, "TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN", 543);
+#if defined(WITH_TLS)
+    PyModule_AddIntConstant(g, "TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN", 544);
+    PyModule_AddIntConstant(g, "TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN", 545);
+#endif
 
 /*
  * suffix appending methods

setup.py

@@ -43,6 +43,10 @@
     CFLAGS.append('-DWITH_EDNS_COOKIES')
     sys.argv.remove('--with-edns-cookies')
 
+if '--with-tls' in sys.argv:
+    CFLAGS.append('-DWITH_TLS')
+    sys.argv.remove('--with-tls')
+
 getdns_module = Extension('getdns',
                     include_dirs = [ '/usr/local/include', ],
                     libraries = [ 'ldns', 'getdns', 'getdns_ext_event', 'event' ],