diff --git a/channels/decorators.py b/channels/decorators.py
index 280b493..7c28143 100644
--- a/channels/decorators.py
+++ b/channels/decorators.py
@@ -50,8 +50,8 @@ def channel_session(func):
         # Turn the reply_channel into a valid session key length thing.
         # We take the last 24 bytes verbatim, as these are the random section,
         # and then hash the remaining ones onto the start, and add a prefix
-        reply_name = message.reply_channel.name
-        session_key = "skt" + hashlib.md5(reply_name[:-24]).hexdigest()[:8] + reply_name[-24:]
+        reply_name = str(message.reply_channel.name).encode()
+        session_key = b"skt" + str(hashlib.md5(reply_name[:-24]).hexdigest()[:8]).encode() + reply_name[-24:]
         # Make a session storage
         session_engine = import_module(settings.SESSION_ENGINE)
         session = session_engine.SessionStore(session_key=session_key)
diff --git a/docs/getting-started.rst b/docs/getting-started.rst
index 6158fdf..7370f40 100644
--- a/docs/getting-started.rst
+++ b/docs/getting-started.rst
@@ -135,7 +135,7 @@ Now, that's taken care of adding and removing WebSocket send channels for the
 we're not going to store a history of messages or anything and just replay
 any message sent in to all connected clients. Here's all the code::
 
-    from channels import Channel, Group
+    from channels import Group
 
     # Connected to websocket.connect and websocket.keepalive
     def ws_add(message):
@@ -253,7 +253,7 @@ just like a normal Django session.
 Let's use it now to build a chat server that expects you to pass a chatroom
 name in the path of your WebSocket request (we'll ignore auth for now - that's next)::
 
-    from channels import Channel
+    from channels import Group
     from channels.decorators import channel_session
 
     # Connected to websocket.connect
@@ -267,13 +267,13 @@ name in the path of your WebSocket request (we'll ignore auth for now - that's n
 
     # Connected to websocket.keepalive
     @channel_session
-    def ws_add(message):
+    def ws_keepalive(message):
         Group("chat-%s" % message.channel_session['room']).add(message.reply_channel)
 
     # Connected to websocket.receive
     @channel_session
     def ws_message(message):
-        Group("chat-%s" % message.channel_session['room']).send(content)
+        Group("chat-%s" % message.channel_session['room']).send(message.content)
 
     # Connected to websocket.disconnect
     @channel_session