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authorRichard van der Hoff <1389908+richvdh@users.noreply.github.com>2020-07-22 13:44:16 +0100
committerGitHub <noreply@github.com>2020-07-22 13:44:16 +0100
commit923c995023b1113f7b859f5b961a2d84666c1761 (patch)
treebdcab89d519e751fc7a7c34ce6761e19949793c9 /synapse
parentAdd debugging to sync response generation (#7929) (diff)
downloadsynapse-923c995023b1113f7b859f5b961a2d84666c1761.tar.xz
Skip serializing /sync response if client has disconnected (#7927)
... it's a load of work which may be entirely redundant.
Diffstat (limited to 'synapse')
-rw-r--r--synapse/rest/client/v2_alpha/sync.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index 9d81150729..a5c24fbd63 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -178,6 +178,12 @@ class SyncRestServlet(RestServlet):
                 full_state=full_state,
             )
 
+        # the client may have disconnected by now; don't bother to serialize the
+        # response if so.
+        if request._disconnected:
+            logger.info("Client has disconnected; not serializing response.")
+            return 200, {}
+
         time_now = self.clock.time_msec()
         response_content = await self.encode_response(
             time_now, sync_result, requester.access_token_id, filter_collection