diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index 71809893c5..cacb1c8aaf 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -751,18 +751,9 @@ class FederationClient(FederationBase):
@defer.inlineCallbacks
def send_invite(self, destination, room_id, event_id, pdu):
- time_now = self._clock.time_msec()
- try:
- code, content = yield self.transport_layer.send_invite(
- destination=destination,
- room_id=room_id,
- event_id=event_id,
- content=pdu.get_pdu_json(time_now),
- )
- except HttpResponseException as e:
- if e.code == 403:
- raise e.to_synapse_error()
- raise
+ room_version = yield self.store.get_room_version(room_id)
+
+ content = yield self._do_send_invite(destination, pdu, room_version)
pdu_dict = content["event"]
@@ -780,6 +771,55 @@ class FederationClient(FederationBase):
defer.returnValue(pdu)
+ @defer.inlineCallbacks
+ def _do_send_invite(self, destination, pdu, room_version):
+ """Actually sends the invite, first trying v2 API and falling back to
+ v1 API if necessary.
+
+ Args:
+ destination (str): Target server
+ pdu (FrozenEvent)
+ room_version (str)
+
+ Returns:
+ dict: The event as a dict as returned by the remote server
+ """
+ time_now = self._clock.time_msec()
+
+ try:
+ content = yield self.transport_layer.send_invite_v2(
+ destination=destination,
+ room_id=pdu.room_id,
+ event_id=pdu.event_id,
+ content={
+ "event": pdu.get_pdu_json(time_now),
+ "room_version": room_version,
+ "invite_room_state": pdu.unsigned.get("invite_room_state", []),
+ },
+ )
+ defer.returnValue(content)
+ except HttpResponseException as e:
+ if e.code in [400, 404]:
+ if room_version in (RoomVersions.V1, RoomVersions.V2):
+ pass # We'll fall through
+ else:
+ raise Exception("Remote server is too old")
+ elif e.code == 403:
+ raise e.to_synapse_error()
+ else:
+ raise
+
+ # Didn't work, try v1 API.
+ # Note the v1 API returns a tuple of `(200, content)`
+
+ _, content = yield self.transport_layer.send_invite_v1(
+ destination=destination,
+ room_id=pdu.room_id,
+ event_id=pdu.event_id,
+ content=pdu.get_pdu_json(time_now),
+ )
+ defer.returnValue(content)
+
def send_leave(self, destinations, pdu):
"""Sends a leave event to one of a list of homeservers.
diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 260178c47b..8e2be218e2 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -21,7 +21,7 @@ from six.moves import urllib
from twisted.internet import defer
from synapse.api.constants import Membership
-from synapse.api.urls import FEDERATION_V1_PREFIX
+from synapse.api.urls import FEDERATION_V1_PREFIX, FEDERATION_V2_PREFIX
from synapse.util.logutils import log_function
logger = logging.getLogger(__name__)
@@ -289,7 +289,7 @@ class TransportLayerClient(object):
@defer.inlineCallbacks
@log_function
- def send_invite(self, destination, room_id, event_id, content):
+ def send_invite_v1(self, destination, room_id, event_id, content):
path = _create_v1_path("/invite/%s/%s", room_id, event_id)
response = yield self.client.put_json(
@@ -303,6 +303,20 @@ class TransportLayerClient(object):
@defer.inlineCallbacks
@log_function
+ def send_invite_v2(self, destination, room_id, event_id, content):
+ path = _create_v2_path("/invite/%s/%s", room_id, event_id)
+
+ response = yield self.client.put_json(
+ destination=destination,
+ path=path,
+ data=content,
+ ignore_backoff=True,
+ )
+
+ defer.returnValue(response)
+
+ @defer.inlineCallbacks
+ @log_function
def get_public_rooms(self, remote_server, limit, since_token,
search_filter=None, include_all_networks=False,
third_party_instance_id=None):
@@ -958,3 +972,24 @@ def _create_v1_path(path, *args):
FEDERATION_V1_PREFIX
+ path % tuple(urllib.parse.quote(arg, "") for arg in args)
)
+
+
+def _create_v2_path(path, *args):
+ """Creates a path against V2 federation API from the path template and
+ args. Ensures that all args are url encoded.
+
+ Example:
+
+ _create_v2_path("/event/%s/", event_id)
+
+ Args:
+ path (str): String template for the path
+ args: ([str]): Args to insert into path. Each arg will be url encoded
+
+ Returns:
+ str
+ """
+ return (
+ FEDERATION_V2_PREFIX
+ + path % tuple(urllib.parse.quote(arg, "") for arg in args)
+ )
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