Disable smacks by default

data/default_config.cfg

@@ -172,6 +172,11 @@ use_bookmarks_method =
 # colored text for example.
 #enable_xhtml_im = true
 
+# Stream Management (XEP-0198) is an extension designed to improve
+# the reliability of XMPP in unreliable network conditions (such
+# as mobile networks). It can however increase bandwidth usage.
+#enable_smacks = false
+
 # Set a number for this setting.
 # The join OR status-change notices will be
 # displayed according to this number.

doc/source/configuration.rst

@@ -302,6 +302,15 @@ to understand what is :ref:`carbons <carbons-details>` or
         enabled. There should be no reason to disable this except if you encounter
         issues with your server.
 
+    enable_smacks
+
+        **Default value:** ``false``
+
+        Stream Management (XEP-0198) is an extension designed to improve
+        the reliability of XMPP in unreliable network conditions (such
+        as mobile networks). It can however increase bandwidth usage.
+        It also requires server support.
+
     enable_user_activity
 
         **Default value:** ``true``

poezio/config.py

@@ -58,6 +58,7 @@ DEFAULT_CONFIG = {
         'enable_user_tune': True,
         'enable_vertical_tab_list': False,
         'enable_xhtml_im': True,
+        'enable_smacks': False,
         'eval_password': '',
         'exec_remote': False,
         'extract_inline_images': True,

poezio/connection.py

@@ -123,7 +123,8 @@ class Connection(slixmpp.ClientXMPP):
         self.plugin['xep_0184'].auto_request = config.get('request_message_receipts')
 
         self.register_plugin('xep_0191')
-        self.register_plugin('xep_0198')
+        if config.get('enable_smacks'):
+            self.register_plugin('xep_0198')
         self.register_plugin('xep_0199')
 
         if config.get('enable_user_tune'):