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-rwxr-xr-xcmdclient/console.py9
-rw-r--r--docs/implementation-notes/code_style.rst (renamed from docs/code_style.rst)0
-rw-r--r--docs/implementation-notes/documentation_style.rst (renamed from docs/documentation_style.rst)0
-rw-r--r--docs/implementation-notes/python_architecture.rst (renamed from docs/python_architecture.rst)0
-rw-r--r--docs/model/protocol_examples.rst (renamed from docs/protocol_examples.rst)0
-rw-r--r--docs/model/terminology.rst (renamed from docs/terminology.rst)0
-rw-r--r--docs/server-server/versioning.rst (renamed from docs/versioning.rst)0
-rw-r--r--docs/specification.rst804
-rw-r--r--synapse/federation/replication.py3
-rw-r--r--synapse/handlers/_base.py2
-rw-r--r--synapse/handlers/federation.py51
-rw-r--r--synapse/handlers/presence.py24
-rw-r--r--synapse/handlers/room.py3
-rw-r--r--synapse/handlers/typing.py3
-rw-r--r--synapse/rest/login.py2
-rw-r--r--synapse/server.py5
-rw-r--r--synapse/storage/stream.py2
-rw-r--r--synapse/streams/events.py3
-rw-r--r--synapse/util/logutils.py2
-rw-r--r--tests/handlers/test_federation.py10
-rw-r--r--tests/handlers/test_presence.py45
-rw-r--r--tests/handlers/test_presencelike.py3
-rw-r--r--tests/rest/test_presence.py2
-rw-r--r--tests/utils.py25
-rw-r--r--webclient/app-controller.js2
-rw-r--r--webclient/app.js8
-rw-r--r--webclient/components/matrix/event-handler-service.js30
-rw-r--r--webclient/components/matrix/event-stream-service.js22
-rw-r--r--webclient/components/matrix/matrix-service.js86
-rw-r--r--webclient/home/home-controller.js14
-rw-r--r--webclient/recents/recents-controller.js47
-rw-r--r--webclient/recents/recents.html5
-rw-r--r--webclient/room/room-controller.js84
-rw-r--r--webclient/room/room.html8
34 files changed, 1113 insertions, 191 deletions
diff --git a/cmdclient/console.py b/cmdclient/console.py
index a4d8145d72..7bda4000fc 100755
--- a/cmdclient/console.py
+++ b/cmdclient/console.py
@@ -225,8 +225,13 @@ class SynapseCmd(cmd.Cmd):
         json_res = yield self.http_client.do_request("GET", url)
         print json_res
 
-        if ("type" not in json_res or "m.login.password" != json_res["type"] or
-                "stages" in json_res):
+        if "flows" not in json_res:
+            print "Failed to find any login flows."
+            defer.returnValue(False)
+
+        flow = json_res["flows"][0] # assume first is the one we want.
+        if ("type" not in flow or "m.login.password" != flow["type"] or
+                "stages" in flow):
             fallback_url = self._url() + "/login/fallback"
             print ("Unable to login via the command line client. Please visit "
                 "%s to login." % fallback_url)
diff --git a/docs/code_style.rst b/docs/implementation-notes/code_style.rst
index d7e2d5e69e..d7e2d5e69e 100644
--- a/docs/code_style.rst
+++ b/docs/implementation-notes/code_style.rst
diff --git a/docs/documentation_style.rst b/docs/implementation-notes/documentation_style.rst
index c365d09dff..c365d09dff 100644
--- a/docs/documentation_style.rst
+++ b/docs/implementation-notes/documentation_style.rst
diff --git a/docs/python_architecture.rst b/docs/implementation-notes/python_architecture.rst
index 8beaa615d0..8beaa615d0 100644
--- a/docs/python_architecture.rst
+++ b/docs/implementation-notes/python_architecture.rst
diff --git a/docs/protocol_examples.rst b/docs/model/protocol_examples.rst
index 61a599b432..61a599b432 100644
--- a/docs/protocol_examples.rst
+++ b/docs/model/protocol_examples.rst
diff --git a/docs/terminology.rst b/docs/model/terminology.rst
index cc6e6760ac..cc6e6760ac 100644
--- a/docs/terminology.rst
+++ b/docs/model/terminology.rst
diff --git a/docs/versioning.rst b/docs/server-server/versioning.rst
index ffda60633f..ffda60633f 100644
--- a/docs/versioning.rst
+++ b/docs/server-server/versioning.rst
diff --git a/docs/specification.rst b/docs/specification.rst
new file mode 100644
index 0000000000..d650683efc
--- /dev/null
+++ b/docs/specification.rst
@@ -0,0 +1,804 @@
+Matrix Specification
+====================
+
+TODO(Introduction) : Matthew
+ - Similar to intro paragraph from README.
+ - Explaining the overall mission, what this spec describes...
+ - "What is Matrix?"
+ - Draw parallels with email?
+
+Architecture
+============
+- Sending a message from A to B
+
+::
+
+                         How data flows between clients
+                         ==============================
+
+       { Matrix client A }                             { Matrix client B }
+           ^          |                                    ^          |
+           |  events  |                                    |  events  |
+           |          V                                    |          V
+       +------------------+                            +------------------+
+       |                  |---------( HTTP )---------->|                  |
+       |   Home Server    |                            |   Home Server    |
+       |                  |<--------( HTTP )-----------|                  |
+       +------------------+        Federation          +------------------+
+
+- Client is an end-user (web app, mobile app) which uses C-S APIs to talk to the home server.
+  A given client is typically responsible for a single user.
+- A single user is represented by a User ID, scoped to the home server which allocated the account.
+  User IDs MUST have @ prefix; looks like @foo:domain - domain indicates the user's home
+  server. 
+- Home server provides C-S APIs and has the ability to federate with other HSes.
+  Typically responsible for N clients.
+- Federation's purpose is to share content between interested HSes; no SPOF. 
+- Events are actions within the system. Typically each action (e.g. sending a message)
+  correlates with exactly one event. Each event has a ``type`` string. 
+- ``type`` values SHOULD be namespaced according to standard Java package naming conventions, 
+  with a ``.`` delimiter e.g. ``com.example.myapp.event``
+- Events are typically send in the context of a room.
+
+Room structure
+--------------
+
+A room is a conceptual place where users can send and receive messages. Rooms 
+can be created, joined and left. Messages are sent to a room, and all 
+participants in that room will receive the message. Rooms are uniquely 
+identified via a room ID. There is exactly one room ID for each room. Each
+room can also have an alias. Each room can have many aliases.
+
+- Room IDs MUST have ! prefix; looks like !foo:domain - domain is simply for namespacing,
+  the room does NOT reside on any one domain. NOT human readable.
+
+- Room Aliases MUST have # prefix; looks like #foo:domain - domain indicates where this
+  alias can be mapped to a room ID. Key point: human readable / friendly.
+
+- Aliases can be queried on the domain they specify, which will return a room ID if a
+  mapping exists. These mappings can change.
+
+::
+
+       { @alice:matrix.org }                             { @bob:domain.com }
+               |                                                 ^
+               |                                                 |
+      Room ID: !qporfwt:matrix.org                 Room ID: !qporfwt:matrix.org
+      Event type: m.room.message                   Event type: m.room.message
+      Content: { JSON object }                     Content: { JSON object }
+               |                                                 |
+               V                                                 |
+       +------------------+                          +------------------+
+       |   Home Server    |                          |   Home Server    |
+       |   matrix.org     |<-------Federation------->|   domain.com     |
+       +------------------+                          +------------------+
+                |       .................................        |
+                |______|         Shared State            |_______|
+                       |  Room ID: !qporfwt:matrix.org   |
+                       | Servers: matrix.org, domain.com |
+                       | Members:                        |
+                       |  - @alice:matrix.org            |
+                       |  - @bob:domain.com              |
+                       |.................................|
+
+- Federation's goal is to maintain the shared state. Don't need FULL state in order
+  to be a part of a room.
+- Introduce the DAG.
+- Events are wrapped in PDUs.
+
+       
+Identity
+--------
+- Identity in relation to 3PIDs. Discovery of users based on 3PIDs.
+- Identity servers; trusted clique of servers which replicate content.
+- They govern the mapping of 3PIDs to user IDs and the creation of said mappings.
+- Not strictly required in order to communicate.
+
+
+API Standards
+-------------
+- All HTTP[S]
+- Uses JSON as HTTP bodies
+- Standard error response format { errcode: M_WHATEVER, error: "some message" }
+- C-S API provides POST for operations, or PUT with txn IDs. Explain txn IDs.
+
+Receiving live updates on a client
+----------------------------------
+- C-S longpoll event stream
+- Concept of start/end tokens.
+- Mention /initialSync to get token.
+
+
+Rooms
+=====
+- How are they created? PDU anchor point: "root of the tree".
+- Adding / removing aliases.
+- Invite/join dance
+- State and non-state data (+extensibility)
+
+TODO : Room permissions / config / power levels.
+
+Messages
+========
+
+This specification outlines several standard event types, all of which are
+prefixed with ``m.``
+
+State messages
+--------------
+- m.room.name
+- m.room.topic
+- m.room.member
+- m.room.config
+- m.room.invite_join
+
+What are they, when are they used, what do they contain, how should they be used
+
+Non-state messages
+------------------
+- m.room.message
+- m.room.message.feedback (and compressed format)
+
+What are they, when are they used, what do they contain, how should they be used
+
+m.room.message msgtypes
+-----------------------
+Each ``m.room.message`` MUST have a ``msgtype`` key which identifies the type of
+message being sent. Each type has their own required and optional keys, as outlined
+below:
+
+``m.text``
+  Required keys:
+    - ``body`` : "string" - The body of the message.
+  Optional keys:
+    None.
+  Example:
+    ``{ "msgtype": "m.text", "body": "I am a fish" }``
+
+``m.emote``
+  Required keys:
+    - ``body`` : "string" - The emote action to perform.
+  Optional keys:
+    None.
+  Example:
+    ``{ "msgtype": "m.emote", "body": "tries to come up with a witty explanation" }``
+
+``m.image``
+  Required keys:
+    - ``url`` : "string" - The URL to the image.
+  Optional keys:
+    - ``info`` : "string" - info : JSON object (ImageInfo) - The image info for image 
+      referred to in ``url``.
+    - ``thumbnail_url`` : "string" - The URL to the thumbnail.
+    - ``thumbnail_info`` : JSON object (ImageInfo) - The image info for the image 
+      referred to in ``thumbnail_url``.
+    - ``body`` : "string" - The alt text of the image, or some kind of content 
+      description for accessibility e.g. "image attachment".
+
+  ImageInfo: 
+    Information about an image::
+    
+      { 
+        "size" : integer (size of image in bytes),
+        "w" : integer (width of image in pixels),
+        "h" : integer (height of image in pixels),
+        "mimetype" : "string (e.g. image/jpeg)",
+      }
+
+``m.audio``
+  Required keys:
+    - ``url`` : "string" - The URL to the audio.
+  Optional keys:
+    - ``info`` : JSON object (AudioInfo) - The audio info for the audio referred to in 
+      ``url``.
+    - ``body`` : "string" - A description of the audio e.g. "Bee Gees - 
+      Stayin' Alive", or some kind of content description for accessibility e.g. 
+      "audio attachment".
+  AudioInfo: 
+    Information about a piece of audio::
+
+      {
+        "mimetype" : "string (e.g. audio/aac)",
+        "size" : integer (size of audio in bytes),
+        "duration" : integer (duration of audio in milliseconds),
+      }
+
+``m.video``
+  Required keys:
+    - ``url`` : "string" - The URL to the video.
+  Optional keys:
+    - ``info`` : JSON object (VideoInfo) - The video info for the video referred to in 
+      ``url``.
+    - ``body`` : "string" - A description of the video e.g. "Gangnam style", 
+      or some kind of content description for accessibility e.g. "video attachment".
+
+  VideoInfo: 
+    Information about a video::
+
+      {
+        "mimetype" : "string (e.g. video/mp4)",
+        "size" : integer (size of video in bytes),
+        "duration" : integer (duration of video in milliseconds),
+        "w" : integer (width of video in pixels),
+        "h" : integer (height of video in pixels),
+        "thumbnail_url" : "string (URL to image)",
+        "thumbanil_info" : JSON object (ImageInfo)
+      }
+
+``m.location``
+  Required keys:
+    - ``geo_uri`` : "string" - The geo URI representing the location.
+  Optional keys:
+    - ``thumbnail_url`` : "string" - The URL to a thumnail of the location being 
+      represented.
+    - ``thumbnail_info`` : JSON object (ImageInfo) - The image info for the image 
+      referred to in ``thumbnail_url``.
+    - ``body`` : "string" - A description of the location e.g. "Big Ben, 
+      London, UK", or some kind of content description for accessibility e.g. 
+      "location attachment".
+
+The following keys can be attached to any ``m.room.message``:
+
+  Optional keys:
+    - ``sender_ts`` : integer - A timestamp (ms resolution) representing the 
+      wall-clock time when the message was sent from the client.
+
+Presence
+========
+
+Each user has the concept of presence information. This encodes the
+"availability" of that user, suitable for display on other user's clients. This
+is transmitted as an ``m.presence`` event and is one of the few events which
+are sent *outside the context of a room*. The basic piece of presence information 
+is represented by the ``state`` key, which is an enum of one of the following:
+
+  - ``online`` : The default state when the user is connected to an event stream.
+  - ``unavailable`` : The user is not reachable at this time.
+  - ``offline`` : The user is not connected to an event stream.
+  - ``free_for_chat`` : The user is generally willing to receive messages 
+    moreso than default.
+  - ``hidden`` : TODO. Behaves as offline, but allows the user to see the client 
+    state anyway and generally interact with client features.
+
+This basic ``state`` field applies to the user as a whole, regardless of how many
+client devices they have connected. The home server should synchronise this
+status choice among multiple devices to ensure the user gets a consistent
+experience.
+
+Idle Time
+---------
+As well as the basic ``state`` field, the presence information can also show a sense
+of an "idle timer". This should be maintained individually by the user's
+clients, and the home server can take the highest reported time as that to
+report. When a user is offline, the home server can still report when the user was last
+seen online.
+
+Transmission
+------------
+- Transmitted as an EDU.
+- Presence lists determine who to send to.
+
+Presence List
+-------------
+Each user's home server stores a "presence list" for that user. This stores a
+list of other user IDs the user has chosen to add to it. To be added to this 
+list, the user being added must receive permission from the list owner. Once
+granted, both user's HS(es) store this information. Since such subscriptions
+are likely to be bidirectional, HSes may wish to automatically accept requests
+when a reverse subscription already exists.
+
+Presence and Permissions
+------------------------
+For a viewing user to be allowed to see the presence information of a target
+user, either:
+
+ - The target user has allowed the viewing user to add them to their presence
+   list, or
+ - The two users share at least one room in common
+
+In the latter case, this allows for clients to display some minimal sense of
+presence information in a user list for a room.
+
+Typing notifications
+====================
+
+TODO : Leo
+
+Voice over IP
+=============
+
+TODO : Dave
+
+Profiles
+========
+
+Internally within Matrix users are referred to by their user ID, which is not a
+human-friendly string. Profiles grant users the ability to see human-readable 
+names for other users that are in some way meaningful to them. Additionally, 
+profiles can publish additional information, such as the user's age or location.
+
+A Profile consists of a display name, an avatar picture, and a set of other 
+metadata fields that the user may wish to publish (email address, phone
+numbers, website URLs, etc...). This specification puts no requirements on the 
+display name other than it being a valid unicode string.
+
+- Metadata extensibility
+- Bundled with which events? e.g. m.room.member
+- Generate own events? What type?
+
+Registration and login
+======================
+
+Clients must register with a home server in order to use Matrix. After 
+registering, the client will be given an access token which must be used in ALL
+requests to that home server as a query parameter 'access_token'.
+
+- TODO Kegan : Make registration like login (just omit the "user" key on the 
+  initial request?)
+
+If the client has already registered, they need to be able to login to their
+account. The home server may provide many different ways of logging in, such
+as user/password auth, login via a social network (OAuth2), login by confirming 
+a token sent to their email address, etc. This specification does not define how
+home servers should authorise their users who want to login to their existing 
+accounts, but instead defines the standard interface which implementations 
+should follow so that ANY client can login to ANY home server.
+
+The login process breaks down into the following:
+  1. Determine the requirements for logging in.
+  2. Submit the login stage credentials.
+  3. Get credentials or be told the next stage in the login process and repeat 
+     step 2.
+     
+As each home server may have different ways of logging in, the client needs to know how
+they should login. All distinct login stages MUST have a corresponding ``type``.
+A ``type`` is a namespaced string which details the mechanism for logging in.
+
+A client may be able to login via multiple valid login flows, and should choose a single
+flow when logging in. A flow is a series of login stages. The home server MUST respond 
+with all the valid login flows when requested::
+
+  The client can login via 3 paths: 1a and 1b, 2a and 2b, or 3. The client should
+  select one of these paths.
+  
+  {
+    "flows": [
+      {
+        "type": "<login type1a>",
+        "stages": [ "<login type 1a>", "<login type 1b>" ]
+      },
+      {
+        "type": "<login type2a>",
+        "stages": [ "<login type 2a>", "<login type 2b>" ]
+      },
+      {
+        "type": "<login type3>"
+      }
+    ]
+  }
+
+After the login is completed, the client's fully-qualified user ID and a new access 
+token MUST be returned::
+
+  {
+    "user_id": "@user:matrix.org",
+    "access_token": "abcdef0123456789"
+  }
+
+The ``user_id`` key is particularly useful if the home server wishes to support 
+localpart entry of usernames (e.g. "user" rather than "@user:matrix.org"), as the
+client may not be able to determine its ``user_id`` in this case.
+
+If a login has multiple requests, the home server may wish to create a session. If
+a home server responds with a 'session' key to a request, clients MUST submit it in 
+subsequent requests until the login is completed::
+
+  {
+    "session": "<session id>"
+  }
+
+This specification defines the following login types:
+ - ``m.login.password``
+ - ``m.login.oauth2``
+ - ``m.login.email.code``
+ - ``m.login.email.url``
+
+
+Password-based
+--------------
+:Type: 
+  m.login.password
+:Description: 
+  Login is supported via a username and password.
+
+To respond to this type, reply with::
+
+  {
+    "type": "m.login.password",
+    "user": "<user_id or user localpart>",
+    "password": "<password>"
+  }
+
+The home server MUST respond with either new credentials, the next stage of the login
+process, or a standard error response.
+
+OAuth2-based
+------------
+:Type: 
+  m.login.oauth2
+:Description:
+  Login is supported via OAuth2 URLs. This login consists of multiple requests.
+
+To respond to this type, reply with::
+
+  {
+    "type": "m.login.oauth2",
+    "user": "<user_id or user localpart>"
+  }
+
+The server MUST respond with::
+
+  {
+    "uri": <Authorization Request URI OR service selection URI>
+  }
+
+The home server acts as a 'confidential' client for the purposes of OAuth2.
+If the uri is a ``sevice selection URI``, it MUST point to a webpage which prompts the 
+user to choose which service to authorize with. On selection of a service, this
+MUST link through to an ``Authorization Request URI``. If there is only 1 service which the
+home server accepts when logging in, this indirection can be skipped and the
+"uri" key can be the ``Authorization Request URI``. 
+
+The client then visits the ``Authorization Request URI``, which then shows the OAuth2 
+Allow/Deny prompt. Hitting 'Allow' returns the ``redirect URI`` with the auth code. 
+Home servers can choose any path for the ``redirect URI``. The client should visit 
+the ``redirect URI``, which will then finish the OAuth2 login process, granting the 
+home server an access token for the chosen service. When the home server gets 
+this access token, it verifies that the cilent has authorised with the 3rd party, and 
+can now complete the login. The OAuth2 ``redirect URI`` (with auth code) MUST respond 
+with either new credentials, the next stage of the login process, or a standard error 
+response.
+    
+For example, if a home server accepts OAuth2 from Google, it would return the 
+Authorization Request URI for Google::
+
+  {
+    "uri": "https://accounts.google.com/o/oauth2/auth?response_type=code&
+    client_id=CLIENT_ID&redirect_uri=REDIRECT_URI&scope=photos"
+  }
+
+The client then visits this URI and authorizes the home server. The client then
+visits the REDIRECT_URI with the auth code= query parameter which returns::
+
+  {
+    "user_id": "@user:matrix.org",
+    "access_token": "0123456789abcdef"
+  }
+
+Email-based (code)
+------------------
+:Type: 
+  m.login.email.code
+:Description:
+  Login is supported by typing in a code which is sent in an email. This login 
+  consists of multiple requests.
+
+To respond to this type, reply with::
+
+  {
+    "type": "m.login.email.code",
+    "user": "<user_id or user localpart>",
+    "email": "<email address>"
+  }
+
+After validating the email address, the home server MUST send an email containing
+an authentication code and return::
+
+  {
+    "type": "m.login.email.code",
+    "session": "<session id>"
+  }
+
+The second request in this login stage involves sending this authentication code::
+
+  {
+    "type": "m.login.email.code",
+    "session": "<session id>",
+    "code": "<code in email sent>"
+  }
+
+The home server MUST respond to this with either new credentials, the next stage of 
+the login process, or a standard error response.
+
+Email-based (url)
+-----------------
+:Type: 
+  m.login.email.url
+:Description:
+  Login is supported by clicking on a URL in an email. This login consists of 
+  multiple requests.
+
+To respond to this type, reply with::
+
+  {
+    "type": "m.login.email.url",
+    "user": "<user_id or user localpart>",
+    "email": "<email address>"
+  }
+
+After validating the email address, the home server MUST send an email containing
+an authentication URL and return::
+
+  {
+    "type": "m.login.email.url",
+    "session": "<session id>"
+  }
+
+The email contains a URL which must be clicked. After it has been clicked, the
+client should perform another request::
+
+  {
+    "type": "m.login.email.url",
+    "session": "<session id>"
+  }
+
+The home server MUST respond to this with either new credentials, the next stage of 
+the login process, or a standard error response. 
+
+A common client implementation will be to periodically poll until the link is clicked.
+If the link has not been visited yet, a standard error response with an errcode of 
+``M_LOGIN_EMAIL_URL_NOT_YET`` should be returned.
+
+
+N-Factor Authentication
+-----------------------
+Multiple login stages can be combined to create N-factor authentication during login.
+
+This can be achieved by responding with the ``next`` login type on completion of a 
+previous login stage::
+
+  {
+    "next": "<next login type>"
+  }
+
+If a home server implements N-factor authentication, it MUST respond with all 
+``stages`` when initially queried for their login requirements::
+
+  {
+    "type": "<1st login type>",
+    "stages": [ <1st login type>, <2nd login type>, ... , <Nth login type> ]
+  }
+
+This can be represented conceptually as::
+
+   _______________________
+  |    Login Stage 1      |
+  | type: "<login type1>" |
+  |  ___________________  |
+  | |_Request_1_________| | <-- Returns "session" key which is used throughout.
+  |  ___________________  |     
+  | |_Request_2_________| | <-- Returns a "next" value of "login type2"
+  |_______________________|
+            |
+            |
+   _________V_____________
+  |    Login Stage 2      |
+  | type: "<login type2>" |
+  |  ___________________  |
+  | |_Request_1_________| |
+  |  ___________________  |
+  | |_Request_2_________| |
+  |  ___________________  |
+  | |_Request_3_________| | <-- Returns a "next" value of "login type3"
+  |_______________________|
+            |
+            |
+   _________V_____________
+  |    Login Stage 3      |
+  | type: "<login type3>" |
+  |  ___________________  |
+  | |_Request_1_________| | <-- Returns user credentials
+  |_______________________|
+
+Fallback
+--------
+Clients cannot be expected to be able to know how to process every single
+login type. If a client determines it does not know how to handle a given
+login type, it should request a login fallback page::
+
+  GET matrix/client/api/v1/login/fallback
+
+This MUST return an HTML page which can perform the entire login process.
+
+Identity
+========
+
+TODO : Dave
+- 3PIDs and identity server, functions
+
+Federation
+==========
+
+Federation is the term used to describe how to communicate between Matrix home 
+servers. Federation is a mechanism by which two home servers can exchange
+Matrix event messages, both as a real-time push of current events, and as a
+historic fetching mechanism to synchronise past history for clients to view. It
+uses HTTP connections between each pair of servers involved as the underlying
+transport. Messages are exchanged between servers in real-time by active pushing
+from each server's HTTP client into the server of the other. Queries to fetch
+historic data for the purpose of back-filling scrollback buffers and the like
+can also be performed.
+
+There are three main kinds of communication that occur between home servers:
+
+:Queries:
+   These are single request/response interactions between a given pair of
+   servers, initiated by one side sending an HTTP GET request to obtain some
+   information, and responded by the other. They are not persisted and contain
+   no long-term significant history. They simply request a snapshot state at the
+   instant the query is made.
+
+:Ephemeral Data Units (EDUs):
+   These are notifications of events that are pushed from one home server to
+   another. They are not persisted and contain no long-term significant history,
+   nor does the receiving home server have to reply to them.
+
+:Persisted Data Units (PDUs):
+   These are notifications of events that are broadcast from one home server to
+   any others that are interested in the same "context" (namely, a Room ID).
+   They are persisted to long-term storage and form the record of history for
+   that context.
+
+EDUs and PDUs are further wrapped in an envelope called a Transaction, which is 
+transferred from the origin to the destination home server using an HTTP PUT request.
+
+
+Transactions
+------------
+The transfer of EDUs and PDUs between home servers is performed by an exchange
+of Transaction messages, which are encoded as JSON objects, passed over an 
+HTTP PUT request. A Transaction is meaningful only to the pair of home servers that 
+exchanged it; they are not globally-meaningful.
+
+Each transaction has:
+ - An opaque transaction ID.
+ - A timestamp (UNIX epoch time in milliseconds) generated by its origin server.
+ - An origin and destination server name.
+ - A list of "previous IDs".
+ - A list of PDUs and EDUs - the actual message payload that the Transaction carries.
+
+::
+
+ {
+  "transaction_id":"916d630ea616342b42e98a3be0b74113",
+  "ts":1404835423000,
+  "origin":"red",
+  "destination":"blue",
+  "prev_ids":["e1da392e61898be4d2009b9fecce5325"],
+  "pdus":[...],
+  "edus":[...]
+ }
+
+The ``prev_ids`` field contains a list of previous transaction IDs that
+the ``origin`` server has sent to this ``destination``. Its purpose is to act as a
+sequence checking mechanism - the destination server can check whether it has
+successfully received that Transaction, or ask for a retransmission if not.
+
+The ``pdus`` field of a transaction is a list, containing zero or more PDUs.[*]
+Each PDU is itself a JSON object containing a number of keys, the exact details of
+which will vary depending on the type of PDU. Similarly, the ``edus`` field is
+another list containing the EDUs. This key may be entirely absent if there are
+no EDUs to transfer.
+
+(* Normally the PDU list will be non-empty, but the server should cope with
+receiving an "empty" transaction, as this is useful for informing peers of other
+transaction IDs they should be aware of. This effectively acts as a push
+mechanism to encourage peers to continue to replicate content.)
+
+PDUs and EDUs
+-------------
+
+All PDUs have:
+ - An ID
+ - A context
+ - A declaration of their type
+ - A list of other PDU IDs that have been seen recently on that context (regardless of which origin
+   sent them)
+
+[[TODO(paul): Update this structure so that 'pdu_id' is a two-element
+[origin,ref] pair like the prev_pdus are]]
+
+::
+
+ {
+  "pdu_id":"a4ecee13e2accdadf56c1025af232176",
+  "context":"#example.green",
+  "origin":"green",
+  "ts":1404838188000,
+  "pdu_type":"m.text",
+  "prev_pdus":[["blue","99d16afbc857975916f1d73e49e52b65"]],
+  "content":...
+  "is_state":false
+ }
+
+In contrast to Transactions, it is important to note that the ``prev_pdus``
+field of a PDU refers to PDUs that any origin server has sent, rather than
+previous IDs that this ``origin`` has sent. This list may refer to other PDUs sent
+by the same origin as the current one, or other origins.
+
+Because of the distributed nature of participants in a Matrix conversation, it
+is impossible to establish a globally-consistent total ordering on the events.
+However, by annotating each outbound PDU at its origin with IDs of other PDUs it
+has received, a partial ordering can be constructed allowing causallity
+relationships to be preserved. A client can then display these messages to the
+end-user in some order consistent with their content and ensure that no message
+that is semantically in reply of an earlier one is ever displayed before it.
+
+PDUs fall into two main categories: those that deliver Events, and those that
+synchronise State. For PDUs that relate to State synchronisation, additional
+keys exist to support this:
+
+::
+
+ {...,
+  "is_state":true,
+  "state_key":TODO
+  "power_level":TODO
+  "prev_state_id":TODO
+  "prev_state_origin":TODO}
+
+[[TODO(paul): At this point we should probably have a long description of how
+State management works, with descriptions of clobbering rules, power levels, etc
+etc... But some of that detail is rather up-in-the-air, on the whiteboard, and
+so on. This part needs refining. And writing in its own document as the details
+relate to the server/system as a whole, not specifically to server-server
+federation.]]
+
+EDUs, by comparison to PDUs, do not have an ID, a context, or a list of
+"previous" IDs. The only mandatory fields for these are the type, origin and
+destination home server names, and the actual nested content.
+
+::
+
+ {"edu_type":"m.presence",
+  "origin":"blue",
+  "destination":"orange",
+  "content":...}
+
+Backfilling
+-----------
+- What it is, when is it used, how is it done
+
+SRV Records
+-----------
+- Why it is needed
+
+Security
+========
+- rate limiting
+- crypto (s-s auth)
+- E2E
+- Lawful intercept + Key Escrow
+
+TODO Mark
+
+Policy Servers
+==============
+TODO
+
+Content repository
+==================
+- thumbnail paths
+
+Address book repository
+=======================
+- format
+
+
+Glossary
+========
+- domain specific words/acronyms with definitions
+
+User ID:
+  An opaque ID which identifies an end-user, which consists of some opaque 
+  localpart combined with the domain name of their home server. 
diff --git a/synapse/federation/replication.py b/synapse/federation/replication.py
index 38ae360bcd..7868575a2e 100644
--- a/synapse/federation/replication.py
+++ b/synapse/federation/replication.py
@@ -541,7 +541,8 @@ class _TransactionQueue(object):
         )
 
         def eb(failure):
-            deferred.errback(failure)
+            if not deferred.called:
+                deferred.errback(failure)
         self._attempt_new_transaction(destination).addErrback(eb)
 
         return deferred
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index f141e92ce2..b37c8be964 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -35,7 +35,7 @@ class BaseRoomHandler(BaseHandler):
                            extra_users=[]):
         snapshot.fill_out_prev_events(event)
 
-        store_id = yield self.store.persist_event(event)
+        yield self.store.persist_event(event)
 
         destinations = set(extra_destinations)
         # Send a PDU to all hosts who have joined the room.
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 9023c3d403..eac110419c 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -22,8 +22,6 @@ from synapse.api.constants import Membership
 from synapse.util.logutils import log_function
 from synapse.federation.pdu_codec import PduCodec
 
-from synapse.api.errors import AuthError
-
 from twisted.internet import defer
 
 import logging
@@ -87,12 +85,6 @@ class FederationHandler(BaseHandler):
         yield self.replication_layer.send_pdu(pdu)
 
     @log_function
-    def get_state_for_room(self, destination, room_id):
-        return self.replication_layer.get_state_for_context(
-            destination, room_id
-        )
-
-    @log_function
     @defer.inlineCallbacks
     def on_receive_pdu(self, pdu, backfilled):
         """ Called by the ReplicationLayer when we have a new pdu. We need to
@@ -141,19 +133,19 @@ class FederationHandler(BaseHandler):
 
             yield self.hs.get_handlers().room_member_handler.change_membership(
                 new_event,
-                True
+                do_auth=True
             )
 
         else:
             with (yield self.room_lock.lock(event.room_id)):
-                store_id = yield self.store.persist_event(event, backfilled)
+                yield self.store.persist_event(event, backfilled)
 
             room = yield self.store.get_room(event.room_id)
 
             if not room:
                 # Huh, let's try and get the current state
                 try:
-                    yield self.get_state_for_room(
+                    yield self.replication_layer.get_state_for_context(
                         event.origin, event.room_id
                     )
 
@@ -163,9 +155,9 @@ class FederationHandler(BaseHandler):
                     if self.hs.hostname in hosts:
                         try:
                             yield self.store.store_room(
-                                event.room_id,
-                                "",
-                                is_public=False
+                                room_id=event.room_id,
+                                room_creator_user_id="",
+                                is_public=False,
                             )
                         except:
                             pass
@@ -188,27 +180,14 @@ class FederationHandler(BaseHandler):
     @log_function
     @defer.inlineCallbacks
     def backfill(self, dest, room_id, limit):
-        events = yield self._backfill(dest, room_id, limit)
-
-        for event in events:
-            try:
-                yield self.store.persist_event(event, backfilled=True)
-            except:
-                logger.exception("Failed to persist event: %s", event)
-
-        defer.returnValue(events)
-
-    @defer.inlineCallbacks
-    def _backfill(self, dest, room_id, limit):
         pdus = yield self.replication_layer.backfill(dest, room_id, limit)
 
-        if not pdus:
-            defer.returnValue([])
+        events = []
 
-        events = [
-            self.pdu_codec.event_from_pdu(pdu)
-            for pdu in pdus
-        ]
+        for pdu in pdus:
+            event = self.pdu_codec.event_from_pdu(pdu)
+            events.append(event)
+            yield self.store.persist_event(event, backfilled=True)
 
         defer.returnValue(events)
 
@@ -224,7 +203,9 @@ class FederationHandler(BaseHandler):
 
         # First get current state to see if we are already joined.
         try:
-            yield self.get_state_for_room(target_host, room_id)
+            yield self.replication_layer.get_state_for_context(
+                target_host, room_id
+            )
 
             hosts = yield self.store.get_joined_hosts_for_room(room_id)
             if self.hs.hostname in hosts:
@@ -254,8 +235,8 @@ class FederationHandler(BaseHandler):
 
         try:
             yield self.store.store_room(
-                room_id,
-                "",
+                room_id=room_id,
+                room_creator_user_id="",
                 is_public=False
             )
         except:
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index c479908f61..bef1508892 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -141,10 +141,6 @@ class PresenceHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def is_presence_visible(self, observer_user, observed_user):
-        defer.returnValue(True)
-        return
-        # FIXME (erikj): This code path absolutely kills the database.
-
         assert(observed_user.is_mine)
 
         if observer_user == observed_user:
@@ -189,10 +185,6 @@ class PresenceHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def set_state(self, target_user, auth_user, state):
-        return
-        # TODO (erikj): Turn this back on. Why did we end up sending EDUs
-        # everywhere?
-
         if not target_user.is_mine:
             raise SynapseError(400, "User is not hosted on this Home Server")
 
@@ -445,16 +437,22 @@ class PresenceHandler(BaseHandler):
         )
 
     def _start_polling_remote(self, user, domain, remoteusers):
+        to_poll = set()
+
         for u in remoteusers:
             if u not in self._remote_recvmap:
                 self._remote_recvmap[u] = set()
+                to_poll.add(u)
 
             self._remote_recvmap[u].add(user)
 
+        if not to_poll:
+            return defer.succeed(None)
+
         return self.federation.send_edu(
             destination=domain,
             edu_type="m.presence",
-            content={"poll": [u.to_string() for u in remoteusers]}
+            content={"poll": [u.to_string() for u in to_poll]}
         )
 
     def stop_polling_presence(self, user, target_user=None):
@@ -497,16 +495,22 @@ class PresenceHandler(BaseHandler):
                 del self._local_pushmap[localpart]
 
     def _stop_polling_remote(self, user, domain, remoteusers):
+        to_unpoll = set()
+
         for u in remoteusers:
             self._remote_recvmap[u].remove(user)
 
             if not self._remote_recvmap[u]:
                 del self._remote_recvmap[u]
+                to_unpoll.add(u)
+
+        if not to_unpoll:
+            return defer.succeed(None)
 
         return self.federation.send_edu(
             destination=domain,
             edu_type="m.presence",
-            content={"unpoll": [u.to_string() for u in remoteusers]}
+            content={"unpoll": [u.to_string() for u in to_unpoll]}
         )
 
     @defer.inlineCallbacks
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index eb638fe50a..3e41d7a46b 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -325,7 +325,8 @@ class RoomMemberHandler(BaseRoomHandler):
         )
 
         snapshot = yield self.store.snapshot_room(
-            room_id, joinee, RoomMemberEvent.TYPE, joinee
+            room_id, joinee.to_string(), RoomMemberEvent.TYPE,
+            joinee.to_string()
         )
 
         yield self._do_join(new_event, snapshot, room_host=host, do_auth=True)
diff --git a/synapse/handlers/typing.py b/synapse/handlers/typing.py
index 9d38a7336e..9fab0ff37c 100644
--- a/synapse/handlers/typing.py
+++ b/synapse/handlers/typing.py
@@ -17,11 +17,12 @@ from twisted.internet import defer
 
 from ._base import BaseHandler
 
+from synapse.api.errors import SynapseError, AuthError
+
 import logging
 
 from collections import namedtuple
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/synapse/rest/login.py b/synapse/rest/login.py
index bcf63fd2ab..99e4f10aac 100644
--- a/synapse/rest/login.py
+++ b/synapse/rest/login.py
@@ -27,7 +27,7 @@ class LoginRestServlet(RestServlet):
     PASS_TYPE = "m.login.password"
 
     def on_GET(self, request):
-        return (200, {"type": LoginRestServlet.PASS_TYPE})
+        return (200, {"flows": [{"type": LoginRestServlet.PASS_TYPE}]})
 
     def on_OPTIONS(self, request):
         return (200, {})
diff --git a/synapse/server.py b/synapse/server.py
index ade8dc6c15..3e72b2bcd5 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -126,11 +126,6 @@ class BaseHomeServer(object):
         object."""
         return UserID.from_string(s, hs=self)
 
-    def parse_roomid(self, s):
-        """Parse the string given by 's' as a Room ID and return a RoomID
-        object."""
-        return RoomID.from_string(s, hs=self)
-
     def parse_roomalias(self, s):
         """Parse the string given by 's' as a Room Alias and return a RoomAlias
         object."""
diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py
index 4f42afc015..4945b0796e 100644
--- a/synapse/storage/stream.py
+++ b/synapse/storage/stream.py
@@ -294,7 +294,7 @@ class StreamStore(SQLBaseStore):
         logger.debug("get_room_events_max_id: %s", res)
 
         if not res or not res[0] or not res[0]["m"]:
-            return "s1"
+            return "s0"
 
         key = res[0]["m"]
         return "s%d" % (key,)
diff --git a/synapse/streams/events.py b/synapse/streams/events.py
index eaa397c650..c68cf1a59c 100644
--- a/synapse/streams/events.py
+++ b/synapse/streams/events.py
@@ -15,7 +15,6 @@
 
 from twisted.internet import defer
 
-from synapse.api.constants import Membership
 from synapse.types import StreamToken
 
 
@@ -32,7 +31,7 @@ class NullSource(object):
         return defer.succeed(0)
 
     def get_pagination_rows(self, user, pagination_config, key):
-        return defer.succeed(([], from_token))
+        return defer.succeed(([], pagination_config.from_token))
 
 
 class RoomEventSource(object):
diff --git a/synapse/util/logutils.py b/synapse/util/logutils.py
index 9270a1790b..021649071b 100644
--- a/synapse/util/logutils.py
+++ b/synapse/util/logutils.py
@@ -15,6 +15,7 @@
 
 
 from inspect import getcallargs
+from functools import wraps
 
 import logging
 
@@ -26,6 +27,7 @@ def log_function(f):
     lineno = f.func_code.co_firstlineno
     pathname = f.func_code.co_filename
 
+    @wraps(f)
     def wrapped(*args, **kwargs):
         name = f.__module__
         logger = logging.getLogger(name)
diff --git a/tests/handlers/test_federation.py b/tests/handlers/test_federation.py
index bc260c8aab..fd19442645 100644
--- a/tests/handlers/test_federation.py
+++ b/tests/handlers/test_federation.py
@@ -28,6 +28,8 @@ from mock import NonCallableMock, ANY
 
 import logging
 
+from ..utils import get_mock_call_args
+
 logging.getLogger().addHandler(logging.NullHandler())
 
 
@@ -99,9 +101,13 @@ class FederationTestCase(unittest.TestCase):
 
         mem_handler = self.handlers.room_member_handler
         self.assertEquals(1, mem_handler.change_membership.call_count)
-        self.assertEquals(True, mem_handler.change_membership.call_args[0][1])
+        call_args = get_mock_call_args(
+            lambda event, do_auth: None,
+            mem_handler.change_membership
+        )
+        self.assertEquals(True, call_args["do_auth"])
 
-        new_event = mem_handler.change_membership.call_args[0][0]
+        new_event = call_args["event"]
         self.assertEquals(RoomMemberEvent.TYPE, new_event.type)
         self.assertEquals(room_id, new_event.room_id)
         self.assertEquals(user_id, new_event.state_key)
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index 824ed07169..8d094fd1f9 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -15,7 +15,7 @@
 
 
 from twisted.trial import unittest
-from twisted.internet import defer
+from twisted.internet import defer, reactor
 
 from mock import Mock, call, ANY
 import logging
@@ -192,7 +192,6 @@ class PresenceStateTestCase(unittest.TestCase):
             ),
             SynapseError
         )
-    test_get_disallowed_state.skip = "Presence polling is disabled"
 
     @defer.inlineCallbacks
     def test_set_my_state(self):
@@ -217,7 +216,6 @@ class PresenceStateTestCase(unittest.TestCase):
                 state={"state": OFFLINE})
 
         self.mock_stop.assert_called_with(self.u_apple)
-    test_set_my_state.skip = "Presence polling is disabled"
 
 
 class PresenceInvitesTestCase(unittest.TestCase):
@@ -657,7 +655,6 @@ class PresencePushTestCase(unittest.TestCase):
                     observed_user=self.u_banana,
                     statuscache=ANY), # self-reflection
         ]) # and no others...
-    test_push_local.skip = "Presence polling is disabled"
 
     @defer.inlineCallbacks
     def test_push_remote(self):
@@ -709,7 +706,6 @@ class PresencePushTestCase(unittest.TestCase):
         )
 
         yield put_json.await_calls()
-    test_push_remote.skip = "Presence polling is disabled"
 
     @defer.inlineCallbacks
     def test_recv_remote(self):
@@ -857,6 +853,7 @@ class PresencePollingTestCase(unittest.TestCase):
             'apple': [ "@banana:test", "@clementine:test" ],
             'banana': [ "@apple:test" ],
             'clementine': [ "@apple:test", "@potato:remote" ],
+            'fig': [ "@potato:remote" ],
     }
 
 
@@ -906,9 +903,10 @@ class PresencePollingTestCase(unittest.TestCase):
         # Mocked database state
         # Local users always start offline
         self.current_user_state = {
-                "apple": OFFLINE,
-                "banana": OFFLINE,
-                "clementine": OFFLINE,
+            "apple": OFFLINE,
+            "banana": OFFLINE,
+            "clementine": OFFLINE,
+            "fig": OFFLINE,
         }
 
         def get_presence_state(user_localpart):
@@ -938,6 +936,7 @@ class PresencePollingTestCase(unittest.TestCase):
         self.u_apple = hs.parse_userid("@apple:test")
         self.u_banana = hs.parse_userid("@banana:test")
         self.u_clementine = hs.parse_userid("@clementine:test")
+        self.u_fig = hs.parse_userid("@fig:test")
 
         # Remote users
         self.u_potato = hs.parse_userid("@potato:remote")
@@ -1002,7 +1001,6 @@ class PresencePollingTestCase(unittest.TestCase):
 
         self.assertFalse("banana" in self.handler._local_pushmap)
         self.assertFalse("clementine" in self.handler._local_pushmap)
-    test_push_local.skip = "Presence polling is disabled"
 
 
     @defer.inlineCallbacks
@@ -1028,10 +1026,32 @@ class PresencePollingTestCase(unittest.TestCase):
         yield put_json.await_calls()
 
         # Gut-wrenching tests
-        self.assertTrue(self.u_potato in self.handler._remote_recvmap)
+        self.assertTrue(self.u_potato in self.handler._remote_recvmap,
+            msg="expected potato to be in _remote_recvmap"
+        )
         self.assertTrue(self.u_clementine in
                 self.handler._remote_recvmap[self.u_potato])
 
+        # fig goes online; shouldn't send a second poll
+        yield self.handler.set_state(
+            target_user=self.u_fig, auth_user=self.u_fig,
+            state={"state": ONLINE}
+        )
+
+        reactor.iterate(delay=0)
+
+        put_json.assert_had_no_calls()
+
+        # fig goes offline
+        yield self.handler.set_state(
+            target_user=self.u_fig, auth_user=self.u_fig,
+            state={"state": OFFLINE}
+        )
+
+        reactor.iterate(delay=0)
+
+        put_json.assert_had_no_calls()
+
         put_json.expect_call_and_return(
             call("remote",
                 path="/matrix/federation/v1/send/1000001/",
@@ -1051,8 +1071,9 @@ class PresencePollingTestCase(unittest.TestCase):
 
         put_json.await_calls()
 
-        self.assertFalse(self.u_potato in self.handler._remote_recvmap)
-    test_remote_poll_send.skip = "Presence polling is disabled"
+        self.assertFalse(self.u_potato in self.handler._remote_recvmap,
+            msg="expected potato not to be in _remote_recvmap"
+        )
 
     @defer.inlineCallbacks
     def test_remote_poll_receive(self):
diff --git a/tests/handlers/test_presencelike.py b/tests/handlers/test_presencelike.py
index 1b106fc2b3..da06a06647 100644
--- a/tests/handlers/test_presencelike.py
+++ b/tests/handlers/test_presencelike.py
@@ -139,7 +139,6 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
 
         mocked_set.assert_called_with("apple",
                 {"state": UNAVAILABLE, "status_msg": "Away"})
-    test_set_my_state.skip = "Presence polling is disabled"
 
     @defer.inlineCallbacks
     def test_push_local(self):
@@ -214,7 +213,6 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
             "displayname": "I am an Apple",
             "avatar_url": "http://foo",
         }, statuscache.state)
-    test_push_local.skip = "Presence polling is disabled"
 
 
     @defer.inlineCallbacks
@@ -246,7 +244,6 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
                     ],
                 },
         )
-    test_push_remote.skip = "Presence polling is disabled"
 
     @defer.inlineCallbacks
     def test_recv_remote(self):
diff --git a/tests/rest/test_presence.py b/tests/rest/test_presence.py
index e15ee38741..7f7347dcf9 100644
--- a/tests/rest/test_presence.py
+++ b/tests/rest/test_presence.py
@@ -114,7 +114,6 @@ class PresenceStateTestCase(unittest.TestCase):
         self.assertEquals(200, code)
         mocked_set.assert_called_with("apple",
                 {"state": UNAVAILABLE, "status_msg": "Away"})
-    test_set_my_status.skip = "Presence polling is disabled"
 
 
 class PresenceListTestCase(unittest.TestCase):
@@ -318,4 +317,3 @@ class PresenceEventStreamTestCase(unittest.TestCase):
                  "mtime_age": 0,
             }},
         ]}, response)
-    test_shortpoll.skip = "Presence polling is disabled"
diff --git a/tests/utils.py b/tests/utils.py
index 6666b06931..98d4f9ed58 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -28,6 +28,16 @@ from mock import patch, Mock
 import json
 import urlparse
 
+from inspect import getcallargs
+
+
+def get_mock_call_args(pattern_func, mock_func):
+    """ Return the arguments the mock function was called with interpreted
+    by the pattern functions argument list.
+    """
+    invoked_args, invoked_kargs = mock_func.call_args
+    return getcallargs(pattern_func, *invoked_args, **invoked_kargs)
+
 
 # This is a mock /resource/ not an entire server
 class MockHttpResource(HttpServer):
@@ -238,8 +248,11 @@ class DeferredMockCallable(object):
 
     def __init__(self):
         self.expectations = []
+        self.calls = []
 
     def __call__(self, *args, **kwargs):
+        self.calls.append((args, kwargs))
+
         if not self.expectations:
             raise ValueError("%r has no pending calls to handle call(%s)" % (
                 self, _format_call(args, kwargs))
@@ -262,3 +275,15 @@ class DeferredMockCallable(object):
         while self.expectations:
             (_, _, d) = self.expectations.pop(0)
             yield d
+        self.calls = []
+
+    def assert_had_no_calls(self):
+        if self.calls:
+            calls = self.calls
+            self.calls = []
+
+            raise AssertionError("Expected not to received any calls, got:\n" +
+                "\n".join([
+                    "call(%s)" % _format_call(c[0], c[1]) for c in calls
+                ])
+            )
diff --git a/webclient/app-controller.js b/webclient/app-controller.js
index 5d3fa6ddc8..80474bb8df 100644
--- a/webclient/app-controller.js
+++ b/webclient/app-controller.js
@@ -33,7 +33,7 @@ angular.module('MatrixWebClientController', ['matrixService', 'mPresence', 'even
     });
 
     if (matrixService.isUserLoggedIn()) {
-        // eventStreamService.resume();
+        eventStreamService.resume();
         mPresence.start();
     }
     
diff --git a/webclient/app.js b/webclient/app.js
index b52479babe..02695c3ae6 100644
--- a/webclient/app.js
+++ b/webclient/app.js
@@ -81,13 +81,11 @@ matrixWebClient.config(['$routeProvider', '$provide', '$httpProvider',
         $httpProvider.interceptors.push('AccessTokenInterceptor');
     }]);
 
-matrixWebClient.run(['$location', 'matrixService', 'eventStreamService', function($location, matrixService, eventStreamService) {
+matrixWebClient.run(['$location', 'matrixService', function($location, matrixService) {
+
     // If user auth details are not in cache, go to the login page
     if (!matrixService.isUserLoggedIn()) {
-        eventStreamService.stop();
         $location.path("login");
     }
-    else {
-        // eventStreamService.resume();
-    }
+
 }]);
diff --git a/webclient/components/matrix/event-handler-service.js b/webclient/components/matrix/event-handler-service.js
index 7514770583..2f7580d682 100644
--- a/webclient/components/matrix/event-handler-service.js
+++ b/webclient/components/matrix/event-handler-service.js
@@ -27,13 +27,15 @@ Typically, this service will store events or broadcast them to any listeners
 if typically all the $on method would do is update its own $scope.
 */
 angular.module('eventHandlerService', [])
-.factory('eventHandlerService', ['matrixService', '$rootScope', function(matrixService, $rootScope) {
+.factory('eventHandlerService', ['matrixService', '$rootScope', '$q', function(matrixService, $rootScope, $q) {
     var MSG_EVENT = "MSG_EVENT";
     var MEMBER_EVENT = "MEMBER_EVENT";
     var PRESENCE_EVENT = "PRESENCE_EVENT";
+
+    var InitialSyncDeferred = $q.defer();
     
     $rootScope.events = {
-        rooms: {}, // will contain roomId: { messages:[], members:{userid1: event} }
+        rooms: {} // will contain roomId: { messages:[], members:{userid1: event} }
     };
 
     $rootScope.presence = {};
@@ -47,11 +49,11 @@ angular.module('eventHandlerService', [])
         }
     }
 
-    var reInitRoom = function(room_id) {
-        $rootScope.events.rooms[room_id] = {};
-        $rootScope.events.rooms[room_id].messages = [];
-        $rootScope.events.rooms[room_id].members = {};
-    }
+    var resetRoomMessages = function(room_id) {
+        if ($rootScope.events.rooms[room_id]) {
+            $rootScope.events.rooms[room_id].messages = [];
+        }
+    };
     
     var handleMessage = function(event, isLiveEvent) {
         initRoom(event.room_id);
@@ -124,8 +126,18 @@ angular.module('eventHandlerService', [])
             }
         },
 
-        reInitRoom: function(room_id) {
-            reInitRoom(room_id);
+        handleInitialSyncDone: function() {
+            console.log("# handleInitialSyncDone");
+            InitialSyncDeferred.resolve($rootScope.events, $rootScope.presence);
         },
+
+        // Returns a promise that resolves when the initialSync request has been processed
+        waitForInitialSyncCompletion: function() {
+            return InitialSyncDeferred.promise;
+        },
+
+        resetRoomMessages: function(room_id) {
+            resetRoomMessages(room_id);
+        }
     };
 }]);
diff --git a/webclient/components/matrix/event-stream-service.js b/webclient/components/matrix/event-stream-service.js
index a1a98b2a36..441148670e 100644
--- a/webclient/components/matrix/event-stream-service.js
+++ b/webclient/components/matrix/event-stream-service.js
@@ -25,7 +25,8 @@ the eventHandlerService.
 angular.module('eventStreamService', [])
 .factory('eventStreamService', ['$q', '$timeout', 'matrixService', 'eventHandlerService', function($q, $timeout, matrixService, eventHandlerService) {
     var END = "END";
-    var TIMEOUT_MS = 30000;
+    var SERVER_TIMEOUT_MS = 30000;
+    var CLIENT_TIMEOUT_MS = 40000;
     var ERR_TIMEOUT_MS = 5000;
     
     var settings = {
@@ -55,7 +56,7 @@ angular.module('eventStreamService', [])
         deferred = deferred || $q.defer();
 
         // run the stream from the latest token
-        matrixService.getEventStream(settings.from, TIMEOUT_MS).then(
+        matrixService.getEventStream(settings.from, SERVER_TIMEOUT_MS, CLIENT_TIMEOUT_MS).then(
             function(response) {
                 if (!settings.isActive) {
                     console.log("[EventStream] Got response but now inactive. Dropping data.");
@@ -80,7 +81,7 @@ angular.module('eventStreamService', [])
                 }
             },
             function(error) {
-                if (error.status == 403) {
+                if (error.status === 403) {
                     settings.shouldPoll = false;
                 }
                 
@@ -96,7 +97,7 @@ angular.module('eventStreamService', [])
         );
 
         return deferred.promise;
-    }    
+    }; 
 
     var startEventStream = function() {
         settings.shouldPoll = true;
@@ -110,18 +111,17 @@ angular.module('eventStreamService', [])
                 for (var i = 0; i < rooms.length; ++i) {
                     var room = rooms[i];
                     if ("state" in room) {
-                        for (var j = 0; j < room.state.length; ++j) {
-                            eventHandlerService.handleEvents(room.state[j], false);
-                        }
+                        eventHandlerService.handleEvents(room.state, false);
                     }
                 }
 
                 var presence = response.data.presence;
-                for (var i = 0; i < presence.length; ++i) {
-                    eventHandlerService.handleEvent(presence[i], false);
-                }
+                eventHandlerService.handleEvents(presence, false);
+
+                // Initial sync is done
+                eventHandlerService.handleInitialSyncDone();
 
-                settings.from = response.data.end
+                settings.from = response.data.end;
                 doEventStream(deferred);        
             },
             function(error) {
diff --git a/webclient/components/matrix/matrix-service.js b/webclient/components/matrix/matrix-service.js
index 2feddac5d8..b56eef6af5 100644
--- a/webclient/components/matrix/matrix-service.js
+++ b/webclient/components/matrix/matrix-service.js
@@ -41,7 +41,7 @@ angular.module('matrixService', [])
     var prefixPath = "/matrix/client/api/v1";
     var MAPPING_PREFIX = "alias_for_";
 
-    var doRequest = function(method, path, params, data) {
+    var doRequest = function(method, path, params, data, $httpParams) {
         if (!config) {
             console.warn("No config exists. Cannot perform request to "+path);
             return;
@@ -58,7 +58,7 @@ angular.module('matrixService', [])
             path = prefixPath + path;
         }
         
-        return doBaseRequest(config.homeserver, method, path, params, data, undefined);
+        return doBaseRequest(config.homeserver, method, path, params, data, undefined, $httpParams);
     };
 
     var doBaseRequest = function(baseUrl, method, path, params, data, headers, $httpParams) {
@@ -343,15 +343,31 @@ angular.module('matrixService', [])
 
             return doBaseRequest(config.homeserver, "POST", path, params, file, headers, $httpParams);
         },
-        
-        // start listening on /events
-        getEventStream: function(from, timeout) {
+
+        /**
+         * Start listening on /events
+         * @param {String} from the token from which to listen events to
+         * @param {Integer} serverTimeout the time in ms the server will hold open the connection
+         * @param {Integer} clientTimeout the timeout in ms used at the client HTTP request level
+         * @returns a promise
+         */
+        getEventStream: function(from, serverTimeout, clientTimeout) {
             var path = "/events";
             var params = {
                 from: from,
-                timeout: timeout
+                timeout: serverTimeout
             };
-            return doRequest("GET", path, params);
+
+            var $httpParams;
+            if (clientTimeout) {
+                // If the Internet connection is lost, this timeout is used to be able to
+                // cancel the current request and notify the client so that it can retry with a new request.
+                $httpParams = {
+                    timeout: clientTimeout
+                };
+            }
+
+            return doRequest("GET", path, params, undefined, $httpParams);
         },
 
         // Indicates if user authentications details are stored in cache
@@ -420,34 +436,38 @@ angular.module('matrixService', [])
         /****** Room aliases management ******/
 
         /**
-         * Enhance data returned by rooms() and publicRooms() by adding room_alias
-         *  & room_display_name which are computed from data already retrieved from the server.
-         * @param {Array} data the response of rooms() and publicRooms()
-         * @returns {Array} the same array with enriched objects
+         * Get the room_alias & room_display_name which are computed from data 
+         * already retrieved from the server.
+         * @param {Room object} room one element of the array returned by the response
+         *  of rooms() and publicRooms()
+         * @returns {Object} {room_alias: "...", room_display_name: "..."}
          */
-        assignRoomAliases: function(data) {
-            for (var i=0; i<data.length; i++) {
-                var alias = this.getRoomIdToAliasMapping(data[i].room_id);
-                if (alias) {
-                    // use the existing alias from storage
-                    data[i].room_alias = alias;
-                    data[i].room_display_name = alias;
-                }
-                else if (data[i].aliases && data[i].aliases[0]) {
-                    // save the mapping
-                    // TODO: select the smarter alias from the array
-                    this.createRoomIdToAliasMapping(data[i].room_id, data[i].aliases[0]);
-                    data[i].room_display_name = data[i].aliases[0];
-                }
-                else if (data[i].membership == "invite" && "inviter" in data[i]) {
-                    data[i].room_display_name = data[i].inviter + "'s room"
-                }
-                else {
-                    // last resort use the room id
-                    data[i].room_display_name = data[i].room_id;
-                }
+        getRoomAliasAndDisplayName: function(room) {
+            var result = {
+                room_alias: undefined,
+                room_display_name: undefined
+            };
+            
+            var alias = this.getRoomIdToAliasMapping(room.room_id);
+            if (alias) {
+                // use the existing alias from storage
+                result.room_alias = alias;
+                result.room_display_name = alias;
+            }
+            else if (room.aliases && room.aliases[0]) {
+                // save the mapping
+                // TODO: select the smarter alias from the array
+                this.createRoomIdToAliasMapping(room.room_id, room.aliases[0]);
+                result.room_display_name = room.aliases[0];
+            }
+            else if (room.membership === "invite" && "inviter" in room) {
+                result.room_display_name = room.inviter + "'s room";
+            }
+            else {
+                // last resort use the room id
+                result.room_display_name = room.room_id;
             }
-            return data;
+            return result;
         },
         
         createRoomIdToAliasMapping: function(roomId, alias) {
diff --git a/webclient/home/home-controller.js b/webclient/home/home-controller.js
index e8e91eede7..547a5c5603 100644
--- a/webclient/home/home-controller.js
+++ b/webclient/home/home-controller.js
@@ -17,8 +17,8 @@ limitations under the License.
 'use strict';
 
 angular.module('HomeController', ['matrixService', 'eventHandlerService', 'RecentsController'])
-.controller('HomeController', ['$scope', '$location', 'matrixService', 'eventHandlerService', 'eventStreamService', 
-                               function($scope, $location, matrixService, eventHandlerService, eventStreamService) {
+.controller('HomeController', ['$scope', '$location', 'matrixService', 
+                               function($scope, $location, matrixService) {
 
     $scope.config = matrixService.config();
     $scope.public_rooms = [];
@@ -42,11 +42,15 @@ angular.module('HomeController', ['matrixService', 'eventHandlerService', 'Recen
         
         matrixService.publicRooms().then(
             function(response) {
-                $scope.public_rooms = matrixService.assignRoomAliases(response.data.chunk);
+                $scope.public_rooms = response.data.chunk;
+                for (var i = 0; i < $scope.public_rooms.length; i++) {
+                    var room = $scope.public_rooms[i];
+
+                    // Add room_alias & room_display_name members
+                    angular.extend(room, matrixService.getRoomAliasAndDisplayName(room));
+                }
             }
         );
-
-        eventStreamService.resume();
     };
     
     $scope.createNewRoom = function(room_id, isPrivate) {
diff --git a/webclient/recents/recents-controller.js b/webclient/recents/recents-controller.js
index bf6a1b8874..d33d41a922 100644
--- a/webclient/recents/recents-controller.js
+++ b/webclient/recents/recents-controller.js
@@ -17,21 +17,34 @@
 'use strict';
 
 angular.module('RecentsController', ['matrixService', 'eventHandlerService'])
-.controller('RecentsController', ['$scope', 'matrixService', 'eventHandlerService', 'eventStreamService', 
-                               function($scope,  matrixService, eventHandlerService, eventStreamService) {
+.controller('RecentsController', ['$scope', 'matrixService', 'eventHandlerService', 
+                               function($scope,  matrixService, eventHandlerService) {
     $scope.rooms = {};
 
     // $scope of the parent where the recents component is included can override this value
     // in order to highlight a specific room in the list
     $scope.recentsSelectedRoomID;
 
-    // Refresh the list on matrix invitation and message event
-    $scope.$on(eventHandlerService.MEMBER_EVENT, function(ngEvent, event, isLive) {
-        refresh();
-    });
-    $scope.$on(eventHandlerService.MSG_EVENT, function(ngEvent, event, isLive) {
-        refresh();
-    });
+    var listenToEventStream = function() {
+        // Refresh the list on matrix invitation and message event
+        $scope.$on(eventHandlerService.MEMBER_EVENT, function(ngEvent, event, isLive) {
+            var config = matrixService.config();
+            if (isLive && event.state_key === config.user_id && event.content.membership === "invite") {
+                console.log("Invited to room " + event.room_id);
+                // FIXME push membership to top level key to match /im/sync
+                event.membership = event.content.membership;
+                // FIXME bodge a nicer name than the room ID for this invite.
+                event.room_display_name = event.user_id + "'s room";
+                $scope.rooms[event.room_id] = event;
+            }
+        });
+        $scope.$on(eventHandlerService.MSG_EVENT, function(ngEvent, event, isLive) {
+            if (isLive) {
+                $scope.rooms[event.room_id].lastMsg = event;              
+            }
+        });
+    };
+
     
     var refresh = function() {
         // List all rooms joined or been invited to
@@ -42,13 +55,16 @@ angular.module('RecentsController', ['matrixService', 'eventHandlerService'])
                 // Reset data
                 $scope.rooms = {};
 
-                var data = matrixService.assignRoomAliases(response.data.rooms);
-                for (var i=0; i<data.length; i++) {
-                    $scope.rooms[data[i].room_id] = data[i];
+                var rooms = response.data.rooms;
+                for (var i=0; i<rooms.length; i++) {
+                    var room = rooms[i];
+                    
+                    // Add room_alias & room_display_name members
+                    $scope.rooms[room.room_id] = angular.extend(room, matrixService.getRoomAliasAndDisplayName(room));
 
                     // Create a shortcut for the last message of this room
-                    if (data[i].messages && data[i].messages.chunk && data[i].messages.chunk[0]) {
-                        $scope.rooms[data[i].room_id].lastMsg = data[i].messages.chunk[0];
+                    if (room.messages && room.messages.chunk && room.messages.chunk[0]) {
+                        $scope.rooms[room.room_id].lastMsg = room.messages.chunk[0];
                     }
                 }
 
@@ -56,6 +72,9 @@ angular.module('RecentsController', ['matrixService', 'eventHandlerService'])
                 for (var i = 0; i < presence.length; ++i) {
                     eventHandlerService.handleEvent(presence[i], false);
                 }
+
+                // From now, update recents from the stream
+                listenToEventStream();
             },
             function(error) {
                 $scope.feedback = "Failure: " + error.data;
diff --git a/webclient/recents/recents.html b/webclient/recents/recents.html
index 6fda6c5c6b..3f025a98d8 100644
--- a/webclient/recents/recents.html
+++ b/webclient/recents/recents.html
@@ -39,6 +39,11 @@
                                     {{ room.lastMsg.user_id }} sent an image
                                 </div>
 
+                                <div ng-switch-when="m.emote">
+                                    <span ng-bind-html="'* ' + (room.lastMsg.user_id) + ' ' + room.lastMsg.content.body | linky:'_blank'">
+                                    </span>
+                                </div>
+
                                 <div ng-switch-default>
                                     {{ room.lastMsg.content }}
                                 </div>
diff --git a/webclient/room/room-controller.js b/webclient/room/room-controller.js
index c596af820c..15710d2ba3 100644
--- a/webclient/room/room-controller.js
+++ b/webclient/room/room-controller.js
@@ -14,9 +14,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-angular.module('RoomController', ['ngSanitize', 'mFileInput', 'mUtilities'])
-.controller('RoomController', ['$scope', '$http', '$timeout', '$routeParams', '$location', 'matrixService', 'eventStreamService', 'eventHandlerService', 'matrixPhoneService', 'mFileUpload', 'MatrixCall', 'mUtilities', '$rootScope',
-                               function($scope, $http, $timeout, $routeParams, $location, matrixService, eventStreamService, eventHandlerService, matrixPhoneService, mFileUpload, MatrixCall, mUtilities, $rootScope) {
+angular.module('RoomController', ['ngSanitize', 'mFileInput'])
+.controller('RoomController', ['$scope', '$timeout', '$routeParams', '$location', '$rootScope', 'matrixService', 'eventHandlerService', 'mFileUpload', 'matrixPhoneService', 'MatrixCall',
+                               function($scope, $timeout, $routeParams, $location, $rootScope, matrixService, eventHandlerService, mFileUpload, matrixPhoneService, MatrixCall) {
    'use strict';
     var MESSAGES_PER_PAGINATION = 30;
     var THUMBNAIL_SIZE = 320;
@@ -298,7 +298,7 @@ angular.module('RoomController', ['ngSanitize', 'mFileInput', 'mUtilities'])
         }
 
         if (room_id_or_alias && '!' === room_id_or_alias[0]) {
-            // Yes. We can start right now
+            // Yes. We can go on right now
             $scope.room_id = room_id_or_alias;
             $scope.room_alias = matrixService.getRoomIdToAliasMapping($scope.room_id);
             onInit2();
@@ -329,7 +329,7 @@ angular.module('RoomController', ['ngSanitize', 'mFileInput', 'mUtilities'])
                 $scope.room_id = response.data.room_id;
                 console.log("   -> Room ID: " + $scope.room_id);
 
-                // Now, we can start
+                // Now, we can go on
                 onInit2();
             },
             function () {
@@ -339,37 +339,61 @@ angular.module('RoomController', ['ngSanitize', 'mFileInput', 'mUtilities'])
             });
         }
     };
-
+    
     var onInit2 = function() {
-        eventHandlerService.reInitRoom($scope.room_id); 
-
-        // Make recents highlight the current room
-        $scope.recentsSelectedRoomID = $scope.room_id;
-
-        // Join the room
-        matrixService.join($scope.room_id).then(
+        console.log("onInit2");
+        
+        // Make sure the initialSync has been before going further
+        eventHandlerService.waitForInitialSyncCompletion().then(
             function() {
-                console.log("Joined room "+$scope.room_id);
+                var needsToJoin = true;
+                
+                // The room members is available in the data fetched by initialSync
+                if ($rootScope.events.rooms[$scope.room_id]) {
+                    var members = $rootScope.events.rooms[$scope.room_id].members;
+
+                    // Update the member list
+                    for (var i in members) {
+                        var member = members[i];
+                        updateMemberList(member);
+                    }
 
-                // Get the current member list
-                matrixService.getMemberList($scope.room_id).then(
-                    function(response) {
-                        for (var i = 0; i < response.data.chunk.length; i++) {
-                            var chunk = response.data.chunk[i];
-                            updateMemberList(chunk);
+                    // Check if the user has already join the room
+                    if ($scope.state.user_id in members) {
+                        if ("join" === members[$scope.state.user_id].membership) {
+                            needsToJoin = false;
                         }
-                        eventStreamService.resume();
-                    },
-                    function(error) {
-                        $scope.feedback = "Failed get member list: " + error.data.error;
                     }
-                );
+                }
                 
-                paginate(MESSAGES_PER_PAGINATION);
-            },
-            function(reason) {
-                $scope.feedback = "Can't join room: " + reason;
-            });
+                // Do we to join the room before starting?
+                if (needsToJoin) {
+                    matrixService.join($scope.room_id).then(
+                        function() {
+                            console.log("Joined room "+$scope.room_id);
+                            onInit3();
+                        },
+                        function(reason) {
+                            $scope.feedback = "Can't join room: " + reason;
+                        });
+                }
+                else {
+                    onInit3();
+                }
+            }
+        );
+    };
+
+    var onInit3 = function() {
+        console.log("onInit3");
+        
+        // TODO: We should be able to keep them
+        eventHandlerService.resetRoomMessages($scope.room_id); 
+
+        // Make recents highlight the current room
+        $scope.recentsSelectedRoomID = $scope.room_id;
+        
+        paginate(MESSAGES_PER_PAGINATION);
     }; 
     
     $scope.inviteUser = function(user_id) {
diff --git a/webclient/room/room.html b/webclient/room/room.html
index bc3eefaf34..572c52e64e 100644
--- a/webclient/room/room.html
+++ b/webclient/room/room.html
@@ -45,13 +45,13 @@
                 </td>
                 <td ng-class="!msg.content.membership ? (msg.content.msgtype === 'm.emote' ? 'emote text' : 'text') : 'membership text'">
                     <div class="bubble">
-                        <span ng-hide='msg.type !== "m.room.member"'>
+                        <span ng-show='msg.type === "m.room.member"'>
                             {{ members[msg.user_id].displayname || msg.user_id }}
                             {{ {"join": "joined", "leave": "left", "invite": "invited"}[msg.content.membership] }}
                             {{ msg.content.membership === "invite" ? (msg.state_key || '') : '' }}
                         </span>
-                        <span ng-hide='msg.content.msgtype !== "m.emote"' ng-bind-html="'* ' + (members[msg.user_id].displayname || msg.user_id) + ' ' + msg.content.body | linky:'_blank'"/>
-                        <span ng-hide='msg.content.msgtype !== "m.text"' ng-bind-html="((msg.content.msgtype === 'm.text') ? msg.content.body : '') | linky:'_blank'"/>
+                        <span ng-show='msg.content.msgtype === "m.emote"' ng-bind-html="'* ' + (members[msg.user_id].displayname || msg.user_id) + ' ' + msg.content.body | linky:'_blank'"/>
+                        <span ng-show='msg.content.msgtype === "m.text"' ng-bind-html="((msg.content.msgtype === 'm.text') ? msg.content.body : '') | linky:'_blank'"/>
                         <div ng-show='msg.content.msgtype === "m.image"'>
                             <div ng-hide='msg.content.thumbnail_url' ng-style="msg.content.body.h && { 'height' : (msg.content.body.h < 320) ? msg.content.body.h : 320}">
                                 <img class="image" ng-src="{{ msg.content.url }}"/>
@@ -109,7 +109,7 @@
             </div>
         
             {{ feedback }}
-            <div ng-hide="!state.stream_failure">
+            <div ng-show="state.stream_failure">
                 {{ state.stream_failure.data.error || "Connection failure" }}
             </div>
         </div>