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-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/api/auth.py10
-rw-r--r--synapse/app/frontend_proxy.py2
-rw-r--r--synapse/appservice/__init__.py4
-rw-r--r--synapse/config/_base.py16
-rw-r--r--synapse/config/appservice.py8
-rw-r--r--synapse/federation/transport/client.py128
-rw-r--r--synapse/handlers/register.py36
-rw-r--r--synapse/handlers/room_member.py8
-rw-r--r--synapse/http/endpoint.py103
-rw-r--r--synapse/http/server.py30
-rw-r--r--synapse/http/site.py6
-rw-r--r--synapse/rest/client/v1/logout.py5
-rw-r--r--synapse/rest/client/v1/register.py4
-rw-r--r--synapse/rest/client/v2_alpha/register.py32
-rw-r--r--synapse/rest/media/v1/media_storage.py4
-rw-r--r--synapse/storage/__init__.py12
-rw-r--r--synapse/util/metrics.py25
18 files changed, 225 insertions, 210 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py
index a9d5198aba..7f6090baf8 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.27.2"
+__version__ = "0.27.3-rc2"
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index ac0a3655a5..f17fda6315 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -204,8 +204,8 @@ class Auth(object):
 
             ip_addr = self.hs.get_ip_from_request(request)
             user_agent = request.requestHeaders.getRawHeaders(
-                "User-Agent",
-                default=[""]
+                b"User-Agent",
+                default=[b""]
             )[0]
             if user and access_token and ip_addr:
                 self.store.insert_client_ip(
@@ -672,7 +672,7 @@ def has_access_token(request):
         bool: False if no access_token was given, True otherwise.
     """
     query_params = request.args.get("access_token")
-    auth_headers = request.requestHeaders.getRawHeaders("Authorization")
+    auth_headers = request.requestHeaders.getRawHeaders(b"Authorization")
     return bool(query_params) or bool(auth_headers)
 
 
@@ -692,8 +692,8 @@ def get_access_token_from_request(request, token_not_found_http_status=401):
         AuthError: If there isn't an access_token in the request.
     """
 
-    auth_headers = request.requestHeaders.getRawHeaders("Authorization")
-    query_params = request.args.get("access_token")
+    auth_headers = request.requestHeaders.getRawHeaders(b"Authorization")
+    query_params = request.args.get(b"access_token")
     if auth_headers:
         # Try the get the access_token from a "Authorization: Bearer"
         # header
diff --git a/synapse/app/frontend_proxy.py b/synapse/app/frontend_proxy.py
index de889357c3..b349e3e3ce 100644
--- a/synapse/app/frontend_proxy.py
+++ b/synapse/app/frontend_proxy.py
@@ -90,7 +90,7 @@ class KeyUploadServlet(RestServlet):
             # They're actually trying to upload something, proxy to main synapse.
             # Pass through the auth headers, if any, in case the access token
             # is there.
-            auth_headers = request.requestHeaders.getRawHeaders("Authorization", [])
+            auth_headers = request.requestHeaders.getRawHeaders(b"Authorization", [])
             headers = {
                 "Authorization": auth_headers,
             }
diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py
index d5a7a5ce2f..5fdb579723 100644
--- a/synapse/appservice/__init__.py
+++ b/synapse/appservice/__init__.py
@@ -21,6 +21,8 @@ from twisted.internet import defer
 import logging
 import re
 
+from six import string_types
+
 logger = logging.getLogger(__name__)
 
 
@@ -146,7 +148,7 @@ class ApplicationService(object):
                         )
 
                 regex = regex_obj.get("regex")
-                if isinstance(regex, basestring):
+                if isinstance(regex, string_types):
                     regex_obj["regex"] = re.compile(regex)  # Pre-compile regex
                 else:
                     raise ValueError(
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index fa105bce72..32b439d20a 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -19,6 +19,8 @@ import os
 import yaml
 from textwrap import dedent
 
+from six import integer_types
+
 
 class ConfigError(Exception):
     pass
@@ -49,7 +51,7 @@ Missing mandatory `server_name` config option.
 class Config(object):
     @staticmethod
     def parse_size(value):
-        if isinstance(value, int) or isinstance(value, long):
+        if isinstance(value, integer_types):
             return value
         sizes = {"K": 1024, "M": 1024 * 1024}
         size = 1
@@ -61,7 +63,7 @@ class Config(object):
 
     @staticmethod
     def parse_duration(value):
-        if isinstance(value, int) or isinstance(value, long):
+        if isinstance(value, integer_types):
             return value
         second = 1000
         minute = 60 * second
@@ -288,22 +290,22 @@ class Config(object):
                     )
                     obj.invoke_all("generate_files", config)
                     config_file.write(config_bytes)
-                print (
+                print((
                     "A config file has been generated in %r for server name"
                     " %r with corresponding SSL keys and self-signed"
                     " certificates. Please review this file and customise it"
                     " to your needs."
-                ) % (config_path, server_name)
-                print (
+                ) % (config_path, server_name))
+                print(
                     "If this server name is incorrect, you will need to"
                     " regenerate the SSL certificates"
                 )
                 return
             else:
-                print (
+                print((
                     "Config file %r already exists. Generating any missing key"
                     " files."
-                ) % (config_path,)
+                ) % (config_path,))
                 generate_keys = True
 
         parser = argparse.ArgumentParser(
diff --git a/synapse/config/appservice.py b/synapse/config/appservice.py
index aba0aec6e8..9a2359b6fd 100644
--- a/synapse/config/appservice.py
+++ b/synapse/config/appservice.py
@@ -21,6 +21,8 @@ import urllib
 import yaml
 import logging
 
+from six import string_types
+
 logger = logging.getLogger(__name__)
 
 
@@ -89,14 +91,14 @@ def _load_appservice(hostname, as_info, config_filename):
         "id", "as_token", "hs_token", "sender_localpart"
     ]
     for field in required_string_fields:
-        if not isinstance(as_info.get(field), basestring):
+        if not isinstance(as_info.get(field), string_types):
             raise KeyError("Required string field: '%s' (%s)" % (
                 field, config_filename,
             ))
 
     # 'url' must either be a string or explicitly null, not missing
     # to avoid accidentally turning off push for ASes.
-    if (not isinstance(as_info.get("url"), basestring) and
+    if (not isinstance(as_info.get("url"), string_types) and
             as_info.get("url", "") is not None):
         raise KeyError(
             "Required string field or explicit null: 'url' (%s)" % (config_filename,)
@@ -128,7 +130,7 @@ def _load_appservice(hostname, as_info, config_filename):
                         "Expected namespace entry in %s to be an object,"
                         " but got %s", ns, regex_obj
                     )
-                if not isinstance(regex_obj.get("regex"), basestring):
+                if not isinstance(regex_obj.get("regex"), string_types):
                     raise ValueError(
                         "Missing/bad type 'regex' key in %s", regex_obj
                     )
diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 50a967a7ec..6db8efa6dd 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -21,6 +21,7 @@ from synapse.api.urls import FEDERATION_PREFIX as PREFIX
 from synapse.util.logutils import log_function
 
 import logging
+import urllib
 
 
 logger = logging.getLogger(__name__)
@@ -50,7 +51,7 @@ class TransportLayerClient(object):
         logger.debug("get_room_state dest=%s, room=%s",
                      destination, room_id)
 
-        path = PREFIX + "/state/%s/" % room_id
+        path = _create_path(PREFIX, "/state/%s/", room_id)
         return self.client.get_json(
             destination, path=path, args={"event_id": event_id},
         )
@@ -72,7 +73,7 @@ class TransportLayerClient(object):
         logger.debug("get_room_state_ids dest=%s, room=%s",
                      destination, room_id)
 
-        path = PREFIX + "/state_ids/%s/" % room_id
+        path = _create_path(PREFIX, "/state_ids/%s/", room_id)
         return self.client.get_json(
             destination, path=path, args={"event_id": event_id},
         )
@@ -94,7 +95,7 @@ class TransportLayerClient(object):
         logger.debug("get_pdu dest=%s, event_id=%s",
                      destination, event_id)
 
-        path = PREFIX + "/event/%s/" % (event_id, )
+        path = _create_path(PREFIX, "/event/%s/", event_id)
         return self.client.get_json(destination, path=path, timeout=timeout)
 
     @log_function
@@ -120,7 +121,7 @@ class TransportLayerClient(object):
             # TODO: raise?
             return
 
-        path = PREFIX + "/backfill/%s/" % (room_id,)
+        path = _create_path(PREFIX, "/backfill/%s/", room_id)
 
         args = {
             "v": event_tuples,
@@ -158,9 +159,11 @@ class TransportLayerClient(object):
         # generated by the json_data_callback.
         json_data = transaction.get_dict()
 
+        path = _create_path(PREFIX, "/send/%s/", transaction.transaction_id)
+
         response = yield self.client.put_json(
             transaction.destination,
-            path=PREFIX + "/send/%s/" % transaction.transaction_id,
+            path=path,
             data=json_data,
             json_data_callback=json_data_callback,
             long_retries=True,
@@ -178,7 +181,7 @@ class TransportLayerClient(object):
     @log_function
     def make_query(self, destination, query_type, args, retry_on_dns_fail,
                    ignore_backoff=False):
-        path = PREFIX + "/query/%s" % query_type
+        path = _create_path(PREFIX, "/query/%s", query_type)
 
         content = yield self.client.get_json(
             destination=destination,
@@ -223,7 +226,7 @@ class TransportLayerClient(object):
                 "make_membership_event called with membership='%s', must be one of %s" %
                 (membership, ",".join(valid_memberships))
             )
-        path = PREFIX + "/make_%s/%s/%s" % (membership, room_id, user_id)
+        path = _create_path(PREFIX, "/make_%s/%s/%s", membership, room_id, user_id)
 
         ignore_backoff = False
         retry_on_dns_fail = False
@@ -249,7 +252,7 @@ class TransportLayerClient(object):
     @defer.inlineCallbacks
     @log_function
     def send_join(self, destination, room_id, event_id, content):
-        path = PREFIX + "/send_join/%s/%s" % (room_id, event_id)
+        path = _create_path(PREFIX, "/send_join/%s/%s", room_id, event_id)
 
         response = yield self.client.put_json(
             destination=destination,
@@ -262,7 +265,7 @@ class TransportLayerClient(object):
     @defer.inlineCallbacks
     @log_function
     def send_leave(self, destination, room_id, event_id, content):
-        path = PREFIX + "/send_leave/%s/%s" % (room_id, event_id)
+        path = _create_path(PREFIX, "/send_leave/%s/%s", room_id, event_id)
 
         response = yield self.client.put_json(
             destination=destination,
@@ -281,7 +284,7 @@ class TransportLayerClient(object):
     @defer.inlineCallbacks
     @log_function
     def send_invite(self, destination, room_id, event_id, content):
-        path = PREFIX + "/invite/%s/%s" % (room_id, event_id)
+        path = _create_path(PREFIX, "/invite/%s/%s", room_id, event_id)
 
         response = yield self.client.put_json(
             destination=destination,
@@ -323,7 +326,7 @@ class TransportLayerClient(object):
     @defer.inlineCallbacks
     @log_function
     def exchange_third_party_invite(self, destination, room_id, event_dict):
-        path = PREFIX + "/exchange_third_party_invite/%s" % (room_id,)
+        path = _create_path(PREFIX, "/exchange_third_party_invite/%s", room_id,)
 
         response = yield self.client.put_json(
             destination=destination,
@@ -336,7 +339,7 @@ class TransportLayerClient(object):
     @defer.inlineCallbacks
     @log_function
     def get_event_auth(self, destination, room_id, event_id):
-        path = PREFIX + "/event_auth/%s/%s" % (room_id, event_id)
+        path = _create_path(PREFIX, "/event_auth/%s/%s", room_id, event_id)
 
         content = yield self.client.get_json(
             destination=destination,
@@ -348,7 +351,7 @@ class TransportLayerClient(object):
     @defer.inlineCallbacks
     @log_function
     def send_query_auth(self, destination, room_id, event_id, content):
-        path = PREFIX + "/query_auth/%s/%s" % (room_id, event_id)
+        path = _create_path(PREFIX, "/query_auth/%s/%s", room_id, event_id)
 
         content = yield self.client.post_json(
             destination=destination,
@@ -410,7 +413,7 @@ class TransportLayerClient(object):
         Returns:
             A dict containg the device keys.
         """
-        path = PREFIX + "/user/devices/" + user_id
+        path = _create_path(PREFIX, "/user/devices/%s", user_id)
 
         content = yield self.client.get_json(
             destination=destination,
@@ -460,7 +463,7 @@ class TransportLayerClient(object):
     @log_function
     def get_missing_events(self, destination, room_id, earliest_events,
                            latest_events, limit, min_depth, timeout):
-        path = PREFIX + "/get_missing_events/%s" % (room_id,)
+        path = _create_path(PREFIX, "/get_missing_events/%s", room_id,)
 
         content = yield self.client.post_json(
             destination=destination,
@@ -480,7 +483,7 @@ class TransportLayerClient(object):
     def get_group_profile(self, destination, group_id, requester_user_id):
         """Get a group profile
         """
-        path = PREFIX + "/groups/%s/profile" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/profile", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -499,7 +502,7 @@ class TransportLayerClient(object):
             requester_user_id (str)
             content (dict): The new profile of the group
         """
-        path = PREFIX + "/groups/%s/profile" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/profile", group_id,)
 
         return self.client.post_json(
             destination=destination,
@@ -513,7 +516,7 @@ class TransportLayerClient(object):
     def get_group_summary(self, destination, group_id, requester_user_id):
         """Get a group summary
         """
-        path = PREFIX + "/groups/%s/summary" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/summary", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -526,7 +529,7 @@ class TransportLayerClient(object):
     def get_rooms_in_group(self, destination, group_id, requester_user_id):
         """Get all rooms in a group
         """
-        path = PREFIX + "/groups/%s/rooms" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/rooms", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -539,7 +542,7 @@ class TransportLayerClient(object):
                           content):
         """Add a room to a group
         """
-        path = PREFIX + "/groups/%s/room/%s" % (group_id, room_id,)
+        path = _create_path(PREFIX, "/groups/%s/room/%s", group_id, room_id,)
 
         return self.client.post_json(
             destination=destination,
@@ -553,7 +556,10 @@ class TransportLayerClient(object):
                              config_key, content):
         """Update room in group
         """
-        path = PREFIX + "/groups/%s/room/%s/config/%s" % (group_id, room_id, config_key,)
+        path = _create_path(
+            PREFIX, "/groups/%s/room/%s/config/%s",
+            group_id, room_id, config_key,
+        )
 
         return self.client.post_json(
             destination=destination,
@@ -566,7 +572,7 @@ class TransportLayerClient(object):
     def remove_room_from_group(self, destination, group_id, requester_user_id, room_id):
         """Remove a room from a group
         """
-        path = PREFIX + "/groups/%s/room/%s" % (group_id, room_id,)
+        path = _create_path(PREFIX, "/groups/%s/room/%s", group_id, room_id,)
 
         return self.client.delete_json(
             destination=destination,
@@ -579,7 +585,7 @@ class TransportLayerClient(object):
     def get_users_in_group(self, destination, group_id, requester_user_id):
         """Get users in a group
         """
-        path = PREFIX + "/groups/%s/users" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/users", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -592,7 +598,7 @@ class TransportLayerClient(object):
     def get_invited_users_in_group(self, destination, group_id, requester_user_id):
         """Get users that have been invited to a group
         """
-        path = PREFIX + "/groups/%s/invited_users" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/invited_users", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -605,7 +611,10 @@ class TransportLayerClient(object):
     def accept_group_invite(self, destination, group_id, user_id, content):
         """Accept a group invite
         """
-        path = PREFIX + "/groups/%s/users/%s/accept_invite" % (group_id, user_id)
+        path = _create_path(
+            PREFIX, "/groups/%s/users/%s/accept_invite",
+            group_id, user_id,
+        )
 
         return self.client.post_json(
             destination=destination,
@@ -618,7 +627,7 @@ class TransportLayerClient(object):
     def join_group(self, destination, group_id, user_id, content):
         """Attempts to join a group
         """
-        path = PREFIX + "/groups/%s/users/%s/join" % (group_id, user_id)
+        path = _create_path(PREFIX, "/groups/%s/users/%s/join", group_id, user_id)
 
         return self.client.post_json(
             destination=destination,
@@ -631,7 +640,7 @@ class TransportLayerClient(object):
     def invite_to_group(self, destination, group_id, user_id, requester_user_id, content):
         """Invite a user to a group
         """
-        path = PREFIX + "/groups/%s/users/%s/invite" % (group_id, user_id)
+        path = _create_path(PREFIX, "/groups/%s/users/%s/invite", group_id, user_id)
 
         return self.client.post_json(
             destination=destination,
@@ -647,7 +656,7 @@ class TransportLayerClient(object):
         invited.
         """
 
-        path = PREFIX + "/groups/local/%s/users/%s/invite" % (group_id, user_id)
+        path = _create_path(PREFIX, "/groups/local/%s/users/%s/invite", group_id, user_id)
 
         return self.client.post_json(
             destination=destination,
@@ -661,7 +670,7 @@ class TransportLayerClient(object):
                                user_id, content):
         """Remove a user fron a group
         """
-        path = PREFIX + "/groups/%s/users/%s/remove" % (group_id, user_id)
+        path = _create_path(PREFIX, "/groups/%s/users/%s/remove", group_id, user_id)
 
         return self.client.post_json(
             destination=destination,
@@ -678,7 +687,7 @@ class TransportLayerClient(object):
         kicked from the group.
         """
 
-        path = PREFIX + "/groups/local/%s/users/%s/remove" % (group_id, user_id)
+        path = _create_path(PREFIX, "/groups/local/%s/users/%s/remove", group_id, user_id)
 
         return self.client.post_json(
             destination=destination,
@@ -693,7 +702,7 @@ class TransportLayerClient(object):
         the attestations
         """
 
-        path = PREFIX + "/groups/%s/renew_attestation/%s" % (group_id, user_id)
+        path = _create_path(PREFIX, "/groups/%s/renew_attestation/%s", group_id, user_id)
 
         return self.client.post_json(
             destination=destination,
@@ -708,11 +717,12 @@ class TransportLayerClient(object):
         """Update a room entry in a group summary
         """
         if category_id:
-            path = PREFIX + "/groups/%s/summary/categories/%s/rooms/%s" % (
+            path = _create_path(
+                PREFIX, "/groups/%s/summary/categories/%s/rooms/%s",
                 group_id, category_id, room_id,
             )
         else:
-            path = PREFIX + "/groups/%s/summary/rooms/%s" % (group_id, room_id,)
+            path = _create_path(PREFIX, "/groups/%s/summary/rooms/%s", group_id, room_id,)
 
         return self.client.post_json(
             destination=destination,
@@ -728,11 +738,12 @@ class TransportLayerClient(object):
         """Delete a room entry in a group summary
         """
         if category_id:
-            path = PREFIX + "/groups/%s/summary/categories/%s/rooms/%s" % (
+            path = _create_path(
+                PREFIX + "/groups/%s/summary/categories/%s/rooms/%s",
                 group_id, category_id, room_id,
             )
         else:
-            path = PREFIX + "/groups/%s/summary/rooms/%s" % (group_id, room_id,)
+            path = _create_path(PREFIX, "/groups/%s/summary/rooms/%s", group_id, room_id,)
 
         return self.client.delete_json(
             destination=destination,
@@ -745,7 +756,7 @@ class TransportLayerClient(object):
     def get_group_categories(self, destination, group_id, requester_user_id):
         """Get all categories in a group
         """
-        path = PREFIX + "/groups/%s/categories" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/categories", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -758,7 +769,7 @@ class TransportLayerClient(object):
     def get_group_category(self, destination, group_id, requester_user_id, category_id):
         """Get category info in a group
         """
-        path = PREFIX + "/groups/%s/categories/%s" % (group_id, category_id,)
+        path = _create_path(PREFIX, "/groups/%s/categories/%s", group_id, category_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -772,7 +783,7 @@ class TransportLayerClient(object):
                               content):
         """Update a category in a group
         """
-        path = PREFIX + "/groups/%s/categories/%s" % (group_id, category_id,)
+        path = _create_path(PREFIX, "/groups/%s/categories/%s", group_id, category_id,)
 
         return self.client.post_json(
             destination=destination,
@@ -787,7 +798,7 @@ class TransportLayerClient(object):
                               category_id):
         """Delete a category in a group
         """
-        path = PREFIX + "/groups/%s/categories/%s" % (group_id, category_id,)
+        path = _create_path(PREFIX, "/groups/%s/categories/%s", group_id, category_id,)
 
         return self.client.delete_json(
             destination=destination,
@@ -800,7 +811,7 @@ class TransportLayerClient(object):
     def get_group_roles(self, destination, group_id, requester_user_id):
         """Get all roles in a group
         """
-        path = PREFIX + "/groups/%s/roles" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/roles", group_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -813,7 +824,7 @@ class TransportLayerClient(object):
     def get_group_role(self, destination, group_id, requester_user_id, role_id):
         """Get a roles info
         """
-        path = PREFIX + "/groups/%s/roles/%s" % (group_id, role_id,)
+        path = _create_path(PREFIX, "/groups/%s/roles/%s", group_id, role_id,)
 
         return self.client.get_json(
             destination=destination,
@@ -827,7 +838,7 @@ class TransportLayerClient(object):
                           content):
         """Update a role in a group
         """
-        path = PREFIX + "/groups/%s/roles/%s" % (group_id, role_id,)
+        path = _create_path(PREFIX, "/groups/%s/roles/%s", group_id, role_id,)
 
         return self.client.post_json(
             destination=destination,
@@ -841,7 +852,7 @@ class TransportLayerClient(object):
     def delete_group_role(self, destination, group_id, requester_user_id, role_id):
         """Delete a role in a group
         """
-        path = PREFIX + "/groups/%s/roles/%s" % (group_id, role_id,)
+        path = _create_path(PREFIX, "/groups/%s/roles/%s", group_id, role_id,)
 
         return self.client.delete_json(
             destination=destination,
@@ -856,11 +867,12 @@ class TransportLayerClient(object):
         """Update a users entry in a group
         """
         if role_id:
-            path = PREFIX + "/groups/%s/summary/roles/%s/users/%s" % (
+            path = _create_path(
+                PREFIX, "/groups/%s/summary/roles/%s/users/%s",
                 group_id, role_id, user_id,
             )
         else:
-            path = PREFIX + "/groups/%s/summary/users/%s" % (group_id, user_id,)
+            path = _create_path(PREFIX, "/groups/%s/summary/users/%s", group_id, user_id,)
 
         return self.client.post_json(
             destination=destination,
@@ -875,7 +887,7 @@ class TransportLayerClient(object):
                               content):
         """Sets the join policy for a group
         """
-        path = PREFIX + "/groups/%s/settings/m.join_policy" % (group_id,)
+        path = _create_path(PREFIX, "/groups/%s/settings/m.join_policy", group_id,)
 
         return self.client.put_json(
             destination=destination,
@@ -891,11 +903,12 @@ class TransportLayerClient(object):
         """Delete a users entry in a group
         """
         if role_id:
-            path = PREFIX + "/groups/%s/summary/roles/%s/users/%s" % (
+            path = _create_path(
+                PREFIX, "/groups/%s/summary/roles/%s/users/%s",
                 group_id, role_id, user_id,
             )
         else:
-            path = PREFIX + "/groups/%s/summary/users/%s" % (group_id, user_id,)
+            path = _create_path(PREFIX, "/groups/%s/summary/users/%s", group_id, user_id,)
 
         return self.client.delete_json(
             destination=destination,
@@ -918,3 +931,22 @@ class TransportLayerClient(object):
             data=content,
             ignore_backoff=True,
         )
+
+
+def _create_path(prefix, path, *args):
+    """Creates a path from the prefix, path template and args. Ensures that
+    all args are url encoded.
+
+    Example:
+
+        _create_path(PREFIX, "/event/%s/", event_id)
+
+    Args:
+        prefix (str)
+        path (str): String template for the path
+        args: ([str]): Args to insert into path. Each arg will be url encoded
+
+    Returns:
+        str
+    """
+    return prefix + path % tuple(urllib.quote(arg, "") for arg in args)
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index dd03705279..f83c6b3cf8 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -23,7 +23,7 @@ from synapse.api.errors import (
 )
 from synapse.http.client import CaptchaServerHttpClient
 from synapse import types
-from synapse.types import UserID
+from synapse.types import UserID, create_requester, RoomID, RoomAlias
 from synapse.util.async import run_on_reactor, Linearizer
 from synapse.util.threepids import check_3pid_allowed
 from ._base import BaseHandler
@@ -205,10 +205,17 @@ class RegistrationHandler(BaseHandler):
                     token = None
                     attempts += 1
 
+        # auto-join the user to any rooms we're supposed to dump them into
+        fake_requester = create_requester(user_id)
+        for r in self.hs.config.auto_join_rooms:
+            try:
+                yield self._join_user_to_room(fake_requester, r)
+            except Exception as e:
+                logger.error("Failed to join new user to %r: %r", r, e)
+
         # We used to generate default identicons here, but nowadays
         # we want clients to generate their own as part of their branding
         # rather than there being consistent matrix-wide ones, so we don't.
-
         defer.returnValue((user_id, token))
 
     @defer.inlineCallbacks
@@ -483,3 +490,28 @@ class RegistrationHandler(BaseHandler):
         )
 
         defer.returnValue((user_id, access_token))
+
+    @defer.inlineCallbacks
+    def _join_user_to_room(self, requester, room_identifier):
+        room_id = None
+        room_member_handler = self.hs.get_room_member_handler()
+        if RoomID.is_valid(room_identifier):
+            room_id = room_identifier
+        elif RoomAlias.is_valid(room_identifier):
+            room_alias = RoomAlias.from_string(room_identifier)
+            room_id, remote_room_hosts = (
+                yield room_member_handler.lookup_room_alias(room_alias)
+            )
+            room_id = room_id.to_string()
+        else:
+            raise SynapseError(400, "%s was not legal room ID or room alias" % (
+                room_identifier,
+            ))
+
+        yield room_member_handler.update_membership(
+            requester=requester,
+            target=requester.user,
+            room_id=room_id,
+            remote_room_hosts=remote_room_hosts,
+            action="join",
+        )
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 9977be8831..c45142d38d 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -852,6 +852,14 @@ class RoomMemberMasterHandler(RoomMemberHandler):
     def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
         """Implements RoomMemberHandler._remote_join
         """
+        # filter ourselves out of remote_room_hosts: do_invite_join ignores it
+        # and if it is the only entry we'd like to return a 404 rather than a
+        # 500.
+
+        remote_room_hosts = [
+            host for host in remote_room_hosts if host != self.hs.hostname
+        ]
+
         if len(remote_room_hosts) == 0:
             raise SynapseError(404, "No known servers")
 
diff --git a/synapse/http/endpoint.py b/synapse/http/endpoint.py
index 87639b9151..00572c2897 100644
--- a/synapse/http/endpoint.py
+++ b/synapse/http/endpoint.py
@@ -12,8 +12,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import socket
-
 from twisted.internet.endpoints import HostnameEndpoint, wrapClientTLS
 from twisted.internet import defer, reactor
 from twisted.internet.error import ConnectError
@@ -33,7 +31,7 @@ SERVER_CACHE = {}
 
 # our record of an individual server which can be tried to reach a destination.
 #
-# "host" is actually a dotted-quad or ipv6 address string. Except when there's
+# "host" is the hostname acquired from the SRV record. Except when there's
 # no SRV record, in which case it is the original hostname.
 _Server = collections.namedtuple(
     "_Server", "priority weight host port expires"
@@ -297,20 +295,13 @@ def resolve_service(service_name, dns_client=client, cache=SERVER_CACHE, clock=t
 
             payload = answer.payload
 
-            hosts = yield _get_hosts_for_srv_record(
-                dns_client, str(payload.target)
-            )
-
-            for (ip, ttl) in hosts:
-                host_ttl = min(answer.ttl, ttl)
-
-                servers.append(_Server(
-                    host=ip,
-                    port=int(payload.port),
-                    priority=int(payload.priority),
-                    weight=int(payload.weight),
-                    expires=int(clock.time()) + host_ttl,
-                ))
+            servers.append(_Server(
+                host=str(payload.target),
+                port=int(payload.port),
+                priority=int(payload.priority),
+                weight=int(payload.weight),
+                expires=int(clock.time()) + answer.ttl,
+            ))
 
         servers.sort()
         cache[service_name] = list(servers)
@@ -328,81 +319,3 @@ def resolve_service(service_name, dns_client=client, cache=SERVER_CACHE, clock=t
             raise e
 
     defer.returnValue(servers)
-
-
-@defer.inlineCallbacks
-def _get_hosts_for_srv_record(dns_client, host):
-    """Look up each of the hosts in a SRV record
-
-    Args:
-        dns_client (twisted.names.dns.IResolver):
-        host (basestring): host to look up
-
-    Returns:
-        Deferred[list[(str, int)]]: a list of (host, ttl) pairs
-
-    """
-    ip4_servers = []
-    ip6_servers = []
-
-    def cb(res):
-        # lookupAddress and lookupIP6Address return a three-tuple
-        # giving the answer, authority, and additional sections of the
-        # response.
-        #
-        # we only care about the answers.
-
-        return res[0]
-
-    def eb(res, record_type):
-        if res.check(DNSNameError):
-            return []
-        logger.warn("Error looking up %s for %s: %s", record_type, host, res)
-        return res
-
-    # no logcontexts here, so we can safely fire these off and gatherResults
-    d1 = dns_client.lookupAddress(host).addCallbacks(
-        cb, eb, errbackArgs=("A", ))
-    d2 = dns_client.lookupIPV6Address(host).addCallbacks(
-        cb, eb, errbackArgs=("AAAA", ))
-    results = yield defer.DeferredList(
-        [d1, d2], consumeErrors=True)
-
-    # if all of the lookups failed, raise an exception rather than blowing out
-    # the cache with an empty result.
-    if results and all(s == defer.FAILURE for (s, _) in results):
-        defer.returnValue(results[0][1])
-
-    for (success, result) in results:
-        if success == defer.FAILURE:
-            continue
-
-        for answer in result:
-            if not answer.payload:
-                continue
-
-            try:
-                if answer.type == dns.A:
-                    ip = answer.payload.dottedQuad()
-                    ip4_servers.append((ip, answer.ttl))
-                elif answer.type == dns.AAAA:
-                    ip = socket.inet_ntop(
-                        socket.AF_INET6, answer.payload.address,
-                    )
-                    ip6_servers.append((ip, answer.ttl))
-                else:
-                    # the most likely candidate here is a CNAME record.
-                    # rfc2782 says srvs may not point to aliases.
-                    logger.warn(
-                        "Ignoring unexpected DNS record type %s for %s",
-                        answer.type, host,
-                    )
-                    continue
-            except Exception as e:
-                logger.warn("Ignoring invalid DNS response for %s: %s",
-                            host, e)
-                continue
-
-    # keep the ipv4 results before the ipv6 results, mostly to match historical
-    # behaviour.
-    defer.returnValue(ip4_servers + ip6_servers)
diff --git a/synapse/http/server.py b/synapse/http/server.py
index ac75206ef5..8d632290de 100644
--- a/synapse/http/server.py
+++ b/synapse/http/server.py
@@ -47,6 +47,17 @@ metrics = synapse.metrics.get_metrics_for(__name__)
 response_count = metrics.register_counter(
     "response_count",
     labels=["method", "servlet", "tag"],
+    alternative_names=(
+        # the following are all deprecated aliases for the same metric
+        metrics.name_prefix + x for x in (
+            "_requests",
+            "_response_time:count",
+            "_response_ru_utime:count",
+            "_response_ru_stime:count",
+            "_response_db_txn_count:count",
+            "_response_db_txn_duration:count",
+        )
+    )
 )
 
 requests_counter = metrics.register_counter(
@@ -62,24 +73,39 @@ outgoing_responses_counter = metrics.register_counter(
 response_timer = metrics.register_counter(
     "response_time_seconds",
     labels=["method", "servlet", "tag"],
+    alternative_names=(
+        metrics.name_prefix + "_response_time:total",
+    ),
 )
 
 response_ru_utime = metrics.register_counter(
     "response_ru_utime_seconds", labels=["method", "servlet", "tag"],
+    alternative_names=(
+        metrics.name_prefix + "_response_ru_utime:total",
+    ),
 )
 
 response_ru_stime = metrics.register_counter(
     "response_ru_stime_seconds", labels=["method", "servlet", "tag"],
+    alternative_names=(
+        metrics.name_prefix + "_response_ru_stime:total",
+    ),
 )
 
 response_db_txn_count = metrics.register_counter(
     "response_db_txn_count", labels=["method", "servlet", "tag"],
+    alternative_names=(
+        metrics.name_prefix + "_response_db_txn_count:total",
+    ),
 )
 
 # seconds spent waiting for db txns, excluding scheduling time, when processing
 # this request
 response_db_txn_duration = metrics.register_counter(
     "response_db_txn_duration_seconds", labels=["method", "servlet", "tag"],
+    alternative_names=(
+        metrics.name_prefix + "_response_db_txn_duration:total",
+    ),
 )
 
 # seconds spent waiting for a db connection, when processing this request
@@ -303,7 +329,7 @@ class JsonResource(HttpServer, resource.Resource):
                 register_paths, so will return (possibly via Deferred) either
                 None, or a tuple of (http code, response body).
         """
-        if request.method == "OPTIONS":
+        if request.method == b"OPTIONS":
             return _options_handler, {}
 
         # Loop through all the registered callbacks to check if the method
@@ -517,7 +543,7 @@ def finish_request(request):
 
 def _request_user_agent_is_curl(request):
     user_agents = request.requestHeaders.getRawHeaders(
-        "User-Agent", default=[]
+        b"User-Agent", default=[]
     )
     for user_agent in user_agents:
         if "curl" in user_agent:
diff --git a/synapse/http/site.py b/synapse/http/site.py
index e422c8dfae..c8b46e1af2 100644
--- a/synapse/http/site.py
+++ b/synapse/http/site.py
@@ -20,7 +20,7 @@ import logging
 import re
 import time
 
-ACCESS_TOKEN_RE = re.compile(r'(\?.*access(_|%5[Ff])token=)[^&]*(.*)$')
+ACCESS_TOKEN_RE = re.compile(br'(\?.*access(_|%5[Ff])token=)[^&]*(.*)$')
 
 
 class SynapseRequest(Request):
@@ -43,12 +43,12 @@ class SynapseRequest(Request):
 
     def get_redacted_uri(self):
         return ACCESS_TOKEN_RE.sub(
-            r'\1<redacted>\3',
+            br'\1<redacted>\3',
             self.uri
         )
 
     def get_user_agent(self):
-        return self.requestHeaders.getRawHeaders("User-Agent", [None])[-1]
+        return self.requestHeaders.getRawHeaders(b"User-Agent", [None])[-1]
 
     def started_processing(self):
         self.site.access_logger.info(
diff --git a/synapse/rest/client/v1/logout.py b/synapse/rest/client/v1/logout.py
index ca49955935..e092158cb7 100644
--- a/synapse/rest/client/v1/logout.py
+++ b/synapse/rest/client/v1/logout.py
@@ -44,7 +44,10 @@ class LogoutRestServlet(ClientV1RestServlet):
             requester = yield self.auth.get_user_by_req(request)
         except AuthError:
             # this implies the access token has already been deleted.
-            pass
+            defer.returnValue((401, {
+                "errcode": "M_UNKNOWN_TOKEN",
+                "error": "Access Token unknown or expired"
+            }))
         else:
             if requester.device_id is None:
                 # the acccess token wasn't associated with a device.
diff --git a/synapse/rest/client/v1/register.py b/synapse/rest/client/v1/register.py
index 5c5fa8f7ab..8a82097178 100644
--- a/synapse/rest/client/v1/register.py
+++ b/synapse/rest/client/v1/register.py
@@ -348,9 +348,9 @@ class RegisterRestServlet(ClientV1RestServlet):
         admin = register_json.get("admin", None)
 
         # Its important to check as we use null bytes as HMAC field separators
-        if "\x00" in user:
+        if b"\x00" in user:
             raise SynapseError(400, "Invalid user")
-        if "\x00" in password:
+        if b"\x00" in password:
             raise SynapseError(400, "Invalid password")
 
         # str() because otherwise hmac complains that 'unicode' does not
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 0ba62bddc1..f317c919dc 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -20,7 +20,6 @@ import synapse
 import synapse.types
 from synapse.api.auth import get_access_token_from_request, has_access_token
 from synapse.api.constants import LoginType
-from synapse.types import RoomID, RoomAlias
 from synapse.api.errors import SynapseError, Codes, UnrecognizedRequestError
 from synapse.http.servlet import (
     RestServlet, parse_json_object_from_request, assert_params_in_request, parse_string
@@ -405,14 +404,6 @@ class RegisterRestServlet(RestServlet):
                 generate_token=False,
             )
 
-            # auto-join the user to any rooms we're supposed to dump them into
-            fake_requester = synapse.types.create_requester(registered_user_id)
-            for r in self.hs.config.auto_join_rooms:
-                try:
-                    yield self._join_user_to_room(fake_requester, r)
-                except Exception as e:
-                    logger.error("Failed to join new user to %r: %r", r, e)
-
             # remember that we've now registered that user account, and with
             #  what user ID (since the user may not have specified)
             self.auth_handler.set_session_data(
@@ -446,29 +437,6 @@ class RegisterRestServlet(RestServlet):
         return 200, {}
 
     @defer.inlineCallbacks
-    def _join_user_to_room(self, requester, room_identifier):
-        room_id = None
-        if RoomID.is_valid(room_identifier):
-            room_id = room_identifier
-        elif RoomAlias.is_valid(room_identifier):
-            room_alias = RoomAlias.from_string(room_identifier)
-            room_id, remote_room_hosts = (
-                yield self.room_member_handler.lookup_room_alias(room_alias)
-            )
-            room_id = room_id.to_string()
-        else:
-            raise SynapseError(400, "%s was not legal room ID or room alias" % (
-                room_identifier,
-            ))
-
-        yield self.room_member_handler.update_membership(
-            requester=requester,
-            target=requester.user,
-            room_id=room_id,
-            action="join",
-        )
-
-    @defer.inlineCallbacks
     def _do_appservice_registration(self, username, as_token, body):
         user_id = yield self.registration_handler.appservice_register(
             username, as_token
diff --git a/synapse/rest/media/v1/media_storage.py b/synapse/rest/media/v1/media_storage.py
index 83471b3173..7f263db239 100644
--- a/synapse/rest/media/v1/media_storage.py
+++ b/synapse/rest/media/v1/media_storage.py
@@ -16,6 +16,8 @@
 from twisted.internet import defer, threads
 from twisted.protocols.basic import FileSender
 
+import six
+
 from ._base import Responder
 
 from synapse.util.file_consumer import BackgroundFileConsumer
@@ -119,7 +121,7 @@ class MediaStorage(object):
                 os.remove(fname)
             except Exception:
                 pass
-            raise t, v, tb
+            six.reraise(t, v, tb)
 
         if not finished_called:
             raise Exception("Finished callback not called")
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index 4800584b59..eacd49d6a5 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -275,7 +275,7 @@ class DataStore(RoomMemberStore, RoomStore,
         """
         def _count_r30_users(txn):
             thirty_days_in_secs = 86400 * 30
-            now = int(self._clock.time_msec())
+            now = int(self._clock.time())
             thirty_days_ago_in_secs = now - thirty_days_in_secs
 
             sql = """
@@ -289,11 +289,11 @@ class DataStore(RoomMemberStore, RoomStore,
                          user_id,
                          last_seen,
                          CASE
-                             WHEN user_agent LIKE '%Android%' THEN 'android'
-                             WHEN user_agent LIKE '%iOS%' THEN 'ios'
-                             WHEN user_agent LIKE '%Electron%' THEN 'electron'
-                             WHEN user_agent LIKE '%Mozilla%' THEN 'web'
-                             WHEN user_agent LIKE '%Gecko%' THEN 'web'
+                             WHEN user_agent LIKE '%%Android%%' THEN 'android'
+                             WHEN user_agent LIKE '%%iOS%%' THEN 'ios'
+                             WHEN user_agent LIKE '%%Electron%%' THEN 'electron'
+                             WHEN user_agent LIKE '%%Mozilla%%' THEN 'web'
+                             WHEN user_agent LIKE '%%Gecko%%' THEN 'web'
                              ELSE 'unknown'
                          END
                          AS platform
diff --git a/synapse/util/metrics.py b/synapse/util/metrics.py
index c3d8237e8f..e4b5687a4b 100644
--- a/synapse/util/metrics.py
+++ b/synapse/util/metrics.py
@@ -31,28 +31,53 @@ metrics = synapse.metrics.get_metrics_for(__name__)
 block_counter = metrics.register_counter(
     "block_count",
     labels=["block_name"],
+    alternative_names=(
+        # the following are all deprecated aliases for the same metric
+        metrics.name_prefix + x for x in (
+            "_block_timer:count",
+            "_block_ru_utime:count",
+            "_block_ru_stime:count",
+            "_block_db_txn_count:count",
+            "_block_db_txn_duration:count",
+        )
+    )
 )
 
 block_timer = metrics.register_counter(
     "block_time_seconds",
     labels=["block_name"],
+    alternative_names=(
+        metrics.name_prefix + "_block_timer:total",
+    ),
 )
 
 block_ru_utime = metrics.register_counter(
     "block_ru_utime_seconds", labels=["block_name"],
+    alternative_names=(
+        metrics.name_prefix + "_block_ru_utime:total",
+    ),
 )
 
 block_ru_stime = metrics.register_counter(
     "block_ru_stime_seconds", labels=["block_name"],
+    alternative_names=(
+        metrics.name_prefix + "_block_ru_stime:total",
+    ),
 )
 
 block_db_txn_count = metrics.register_counter(
     "block_db_txn_count", labels=["block_name"],
+    alternative_names=(
+        metrics.name_prefix + "_block_db_txn_count:total",
+    ),
 )
 
 # seconds spent waiting for db txns, excluding scheduling time, in this block
 block_db_txn_duration = metrics.register_counter(
     "block_db_txn_duration_seconds", labels=["block_name"],
+    alternative_names=(
+        metrics.name_prefix + "_block_db_txn_duration:total",
+    ),
 )
 
 # seconds spent waiting for a db connection, in this block