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authorRichard van der Hoff <richard@matrix.org>2021-07-23 00:43:53 +0100
committerRichard van der Hoff <richard@matrix.org>2021-07-23 00:43:53 +0100
commit016f085722666ac68d2e4b4f21793db399203ea9 (patch)
treede40ce47ba1fc673b8c0d85a4570170548278341 /synapse/rest
parentMake deprecation notice of the spam checker doc more obvious (#10395) (diff)
parent 1.38.1 (diff)
downloadsynapse-016f085722666ac68d2e4b4f21793db399203ea9.tar.xz
Merge tag 'v1.38.1'
Synapse 1.38.1 (2021-07-22)
===========================

Bugfixes
--------

- Always include `device_one_time_keys_count` key in `/sync` response to work around a bug in Element Android that broke encryption for new devices. ([\#10457](https://github.com/matrix-org/synapse/issues/10457))
Diffstat (limited to 'synapse/rest')
-rw-r--r--synapse/rest/client/v2_alpha/sync.py11
1 files changed, 7 insertions, 4 deletions
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index ecbbcf3851..32e8500795 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -252,10 +252,13 @@ class SyncRestServlet(RestServlet):
         if sync_result.device_lists.left:
             response["device_lists"]["left"] = list(sync_result.device_lists.left)
 
-        if sync_result.device_one_time_keys_count:
-            response[
-                "device_one_time_keys_count"
-            ] = sync_result.device_one_time_keys_count
+        # We always include this because https://github.com/vector-im/element-android/issues/3725
+        # The spec isn't terribly clear on when this can be omitted and how a client would tell
+        # the difference between "no keys present" and "nothing changed" in terms of whole field
+        # absent / individual key type entry absent
+        # Corresponding synapse issue: https://github.com/matrix-org/synapse/issues/10456
+        response["device_one_time_keys_count"] = sync_result.device_one_time_keys_count
+
         if sync_result.device_unused_fallback_key_types:
             response[
                 "org.matrix.msc2732.device_unused_fallback_key_types"