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authorErik Johnston <erik@matrix.org>2017-04-04 09:46:16 +0100
committerErik Johnston <erik@matrix.org>2017-04-04 09:46:16 +0100
commit62b89daac6f4418d831d531fa40ad71aa0c74fb9 (patch)
treea5fa797ac7e65f85cae52cccd88451e5672257c6 /synapse/federation
parentAlways advance stream tokens (diff)
parentMerge pull request #2095 from matrix-org/rav/cull_log_preserves (diff)
downloadsynapse-62b89daac6f4418d831d531fa40ad71aa0c74fb9.tar.xz
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/repl_tcp_server
Diffstat (limited to 'synapse/federation')
-rw-r--r--synapse/federation/federation_server.py8
1 files changed, 6 insertions, 2 deletions
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py
index 510a176821..bc20b9c201 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -146,11 +146,15 @@ class FederationServer(FederationBase):
             # check that it's actually being sent from a valid destination to
             # workaround bug #1753 in 0.18.5 and 0.18.6
             if transaction.origin != get_domain_from_id(pdu.event_id):
+                # We continue to accept join events from any server; this is
+                # necessary for the federation join dance to work correctly.
+                # (When we join over federation, the "helper" server is
+                # responsible for sending out the join event, rather than the
+                # origin. See bug #1893).
                 if not (
                     pdu.type == 'm.room.member' and
                     pdu.content and
-                    pdu.content.get("membership", None) == 'join' and
-                    self.hs.is_mine_id(pdu.state_key)
+                    pdu.content.get("membership", None) == 'join'
                 ):
                     logger.info(
                         "Discarding PDU %s from invalid origin %s",