From ffb43b2ec0f8ec8bbe15dea3675242b69c6a4516 Mon Sep 17 00:00:00 2001
From: Anders Svensson <anders@erlang.org>
Date: Mon, 21 Jan 2013 14:50:44 +0100
Subject: Remove upgrade code not needed at a major release

---
 lib/diameter/src/base/diameter_peer_fsm.erl | 47 ++++++-----------------------
 1 file changed, 9 insertions(+), 38 deletions(-)

(limited to 'lib/diameter/src/base/diameter_peer_fsm.erl')

diff --git a/lib/diameter/src/base/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index 858870566f..5dab6214b1 100644
--- a/lib/diameter/src/base/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
 %%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -95,10 +95,8 @@
 
 -record(state,
         {state %% of RFC 3588 Peer State Machine
-              :: 'Wait-Conn-Ack'  %% old code
-               | {'Wait-Conn-Ack', uint32()}
+              :: {'Wait-Conn-Ack', uint32()}
                | recv_CER
-               | 'Wait-CEA' %% old code
                | {'Wait-CEA', uint32(), uint32()}
                | 'Open',
          mode :: accept | connect | {connect, reference()},
@@ -142,8 +140,7 @@
 %%% Output: Pid
 %%% ---------------------------------------------------------------------------
 
--spec start(T, [Opt], #diameter_service{}  %% from old code
-                    | {diameter:sequence(),
+-spec start(T, [Opt], {diameter:sequence(),
                        diameter:restriction(),
                        #diameter_service{}})
    -> pid()
@@ -175,9 +172,6 @@ init(T) ->
     proc_lib:init_ack({ok, self()}),
     gen_server:enter_loop(?MODULE, [], i(T)).
 
-i({WPid, Type, Opts, #diameter_service{} = Svc}) ->  %% from old code
-    i({WPid, Type, Opts, {?NOMASK, [node() | nodes()], Svc}});
-
 i({WPid, T, Opts, {Mask, Nodes, #diameter_service{applications = Apps,
                                                   capabilities = LCaps}
                                 = Svc}}) ->
@@ -334,10 +328,6 @@ eraser(Key) ->
 
 %% transition/2
 
-%% Started in old code.
-transition(T, #state{state = 'Wait-Conn-Ack' = PS} = S) ->
-    transition(T, S#state{state = {PS, ?EVENT_TIMEOUT}});
-
 %% Connection to peer.
 transition({diameter, {TPid, connected, Remote}},
            #state{transport = TPid,
@@ -401,10 +391,6 @@ transition({send, Msg}, #state{transport = TPid}) ->
     send(TPid, Msg),
     ok;
 
-%% Messages from old (diameter_service) code.
-transition(shutdown = T, #state{parent = Pid} = S) ->
-    transition({T, Pid, service}, S); %% Reason irrelevant: old code has no cb
-
 %% Request for graceful shutdown at remove_transport, stop_service of
 %% application shutdown.
 transition({shutdown = T, Pid}, S) ->
@@ -508,22 +494,13 @@ build_CER(#state{service = #diameter_service{capabilities = LCaps}}) ->
 %% encode/1
 
 encode(Rec) ->
-    Seq = diameter_session:sequence(sequence()),
+    Seq = diameter_session:sequence({_,_} = getr(?SEQUENCE_KEY)),
     Hdr = #diameter_header{version = ?DIAMETER_VERSION,
                            end_to_end_id = Seq,
                            hop_by_hop_id = Seq},
     diameter_codec:encode(?BASE, #diameter_packet{header = Hdr,
                                                   msg = Rec}).
 
-sequence() ->
-    case getr(?SEQUENCE_KEY) of
-        {_,_} = Mask ->
-            Mask;
-        undefined ->  %% started in old code
-            putr(?SEQUENCE_KEY, ?NOMASK),
-            ?NOMASK
-    end.
-
 %% recv/2
 
 %% RFC 3588 has result code 5015 for an invalid length but if a
@@ -585,10 +562,8 @@ rcv('CEA',
     #diameter_packet{header = #diameter_header{end_to_end_id = Eid,
                                                hop_by_hop_id = Hid}}
     = Pkt,
-    #state{state = {'Wait-CEA' = T, Hid, Eid}}
+    #state{state = {'Wait-CEA', Hid, Eid}}
     = S) ->
-    handle_CEA(Pkt, S#state{state = T});
-rcv('CEA', Pkt, #state{state = 'Wait-CEA'} = S) ->  %% old code
     handle_CEA(Pkt, S);
 
 %% Incoming CER
@@ -1021,14 +996,10 @@ dpr(Reason, #state{state = 'Open',
                    dpr = false,
                    service = #diameter_service{capabilities = Caps}}
             = S) ->
-    case getr(?DPR_KEY) of
-        CBs when is_list(CBs) ->
-            Ref = getr(?REF_KEY),
-            Peer = {self(), Caps},
-            dpr(CBs, [Reason, Ref, Peer], S);
-        undefined ->  %% started in old code
-            send_dpr(Reason, [], S)
-    end;
+    CBs = getr(?DPR_KEY),
+    Ref = getr(?REF_KEY),
+    Peer = {self(), Caps},
+    dpr(CBs, [Reason, Ref, Peer], S);
 
 %% Connection is open, DPR already sent.
 dpr(_, #state{state = 'Open'}) ->
-- 
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