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authorAnders Svensson <anders@erlang.org>2012-08-28 15:05:09 +0200
committerAnders Svensson <anders@erlang.org>2012-08-28 15:05:09 +0200
commitf7036408ed27781cc5d060d6966f07cb2a5e00f6 (patch)
tree078078420f98329f7a088043a17e1fb9686cb647
parentd4eccdc4b544215f3706408bdeabe8c231780065 (diff)
parenta907e66c93e54ffd9b4c8c84f500cd267a28ddd8 (diff)
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Merge branch 'anders/diameter/multiple_transport_modules/OTP-9885' into maint
* anders/diameter/multiple_transport_modules/OTP-9885: Maintain service_info callback data in process dictionary Maintain pid of started transport process in process dictionary Minor spec and backwards compatibility fix Update example code Update documentation Add diameter_transport for transport start indirection Allow multiple transport_module and transport_config
-rw-r--r--lib/diameter/doc/src/diameter.xml30
-rw-r--r--lib/diameter/examples/code/peer.erl5
-rw-r--r--lib/diameter/src/base/diameter.erl1
-rw-r--r--lib/diameter/src/base/diameter_peer.erl130
-rw-r--r--lib/diameter/src/base/diameter_peer_fsm.erl155
-rw-r--r--lib/diameter/src/modules.mk1
-rw-r--r--lib/diameter/src/transport/diameter_etcp.erl22
-rw-r--r--lib/diameter/src/transport/diameter_sctp.erl41
-rw-r--r--lib/diameter/src/transport/diameter_tcp.erl77
-rw-r--r--lib/diameter/src/transport/diameter_transport.erl55
10 files changed, 444 insertions, 73 deletions
diff --git a/lib/diameter/doc/src/diameter.xml b/lib/diameter/doc/src/diameter.xml
index 93e2603c10..ec7bd2012e 100644
--- a/lib/diameter/doc/src/diameter.xml
+++ b/lib/diameter/doc/src/diameter.xml
@@ -764,15 +764,45 @@ Defaults to <c>diameter_tcp</c> if unspecified.</p>
<p>
The interface required of a transport module is documented in <seealso
marker="diameter_transport">diameter_transport(3)</seealso>.</p>
+
+<p>
+Multiple <c>transport_module</c> and <c>transport_config</c>
+options are allowed.
+The order of these is significant in this case (and only in this case),
+a <c>transport_module</c> being paired with the first
+<c>transport_config</c> following it in the options list, or the
+default value for trailing modules.
+Transport starts will be attempted with each of the
+modules in order until one establishes a connection within the
+corresponding timeout (see <c>transport_config</c> below) or all fail.</p>
</item>
<tag><c>{transport_config, term()}</c></tag>
+<tag><c>{transport_config, term(), Unsigned32()}</c></tag>
<item>
<p>
A term passed as the third argument to the <seealso
marker="diameter_transport#start">start/3</seealso> function of
the relevant <c>transport_module</c> in order to start a transport process.
Defaults to the empty list if unspecified.</p>
+
+<p>
+The 3-tuple form additionally specifies an interval, in milliseconds,
+after which a started transport process should be terminated if it has
+not yet established a connection.
+For example, the following options on a connecting transport
+request a connection with one peer over SCTP or another
+(typically the same) over TCP.</p>
+
+<code>
+{transport_module, diameter_sctp}
+{transport_config, SctpOpts, 5000}
+{transport_module, diameter_tcp}
+{transport_config, TcpOpts}
+</code>
+
+<p>
+To listen on both SCTP and TCP, define one transport for each.</p>
</item>
<tag><c>{applications, [application_alias()]}</c></tag>
diff --git a/lib/diameter/examples/code/peer.erl b/lib/diameter/examples/code/peer.erl
index b07cd32b98..8fdeba57bf 100644
--- a/lib/diameter/examples/code/peer.erl
+++ b/lib/diameter/examples/code/peer.erl
@@ -117,6 +117,11 @@ server(T) ->
%%
%% Return config for a connecting transport.
+client({all, LA, RA, RP}) ->
+ [[M,{K,C}], T]
+ = [client({P, LA, RA, RP}) || P <- [sctp,tcp]],
+ [M, {K,C,2000} | T];
+
client({T, LA, RA, RP}) ->
[{transport_module, tmod(T)},
{transport_config, [{ip, addr(LA)},
diff --git a/lib/diameter/src/base/diameter.erl b/lib/diameter/src/base/diameter.erl
index 336f0c1f2d..6703841f80 100644
--- a/lib/diameter/src/base/diameter.erl
+++ b/lib/diameter/src/base/diameter.erl
@@ -312,6 +312,7 @@ call(SvcName, App, Message) ->
-type transport_opt()
:: {transport_module, atom()}
| {transport_config, any()}
+ | {transport_timeout, non_neg_integer() | infinity}
| {applications, [app_alias()]}
| {capabilities, [capability()]}
| {capabilities_cb, evaluable()}
diff --git a/lib/diameter/src/base/diameter_peer.erl b/lib/diameter/src/base/diameter_peer.erl
index 3e78c4caef..a2a1c567d8 100644
--- a/lib/diameter/src/base/diameter_peer.erl
+++ b/lib/diameter/src/base/diameter_peer.erl
@@ -27,12 +27,15 @@
up/2]).
%% ... and the stack.
--export([start/3,
+-export([start/1,
send/2,
close/1,
abort/1,
notify/2]).
+%% Old interface only called from old code.
+-export([start/3]). %% < diameter-1.2 (R15B02)
+
%% Server start.
-export([start_link/0]).
@@ -57,6 +60,11 @@
%% Server state.
-record(state, {id = now()}).
+%% Default transport_module/config.
+-define(DEFAULT_TMOD, diameter_tcp).
+-define(DEFAULT_TCFG, []).
+-define(DEFAULT_TTMO, infinity).
+
%%% ---------------------------------------------------------------------------
%%% # notify/2
%%% ---------------------------------------------------------------------------
@@ -68,9 +76,108 @@ notify(SvcName, T) ->
%%% # start/3
%%% ---------------------------------------------------------------------------
-start(T, Opts, #diameter_service{} = Svc) ->
- {Mod, Cfg} = split_transport(Opts),
- apply(Mod, start, [T, Svc, Cfg]).
+%% From old code: make is restart.
+start(_T, _Opts, #diameter_service{}) ->
+ {error, restart}.
+
+%%% ---------------------------------------------------------------------------
+%%% # start/1
+%%% ---------------------------------------------------------------------------
+
+-spec start({T, [Opt], #diameter_service{}})
+ -> {TPid, [Addr], Tmo, Data}
+ | {error, [term()]}
+ when T :: {connect|accept, diameter:transport_ref()},
+ Opt :: diameter:transport_opt(),
+ TPid :: pid(),
+ Addr :: inet:ip_address(),
+ Tmo :: non_neg_integer(),
+ Data :: {{T, Mod, Cfg}, [Mod], [{T, [Mod], Cfg}], [Err]},
+ Mod :: module(),
+ Cfg :: term(),
+ Err :: term().
+
+%% Initial start.
+start({T, Opts, #diameter_service{} = Svc}) ->
+ start(T, Svc, pair(Opts, [], []), []);
+
+%% Subsequent start.
+start({#diameter_service{} = Svc, Tmo, {{T, _, Cfg}, Ms, Rest, Errs}}) ->
+ start(T, Ms, Cfg, Svc, Tmo, Rest, Errs).
+
+%% pair/3
+%%
+%% Pair transport modules with config.
+
+%% Another transport_module: accumulate it.
+pair([{transport_module, M} | Rest], Mods, Acc) ->
+ pair(Rest, [M|Mods], Acc);
+
+%% Another transport_config: accumulate another tuple.
+pair([{transport_config = T, C} | Rest], Mods, Acc) ->
+ pair([{T, C, ?DEFAULT_TTMO} | Rest], Mods, Acc);
+pair([{transport_config, C, Tmo} | Rest], Mods, Acc) ->
+ pair(Rest, [], acc({Mods, C, Tmo}, Acc));
+
+pair([_ | Rest], Mods, Acc) ->
+ pair(Rest, Mods, Acc);
+
+%% No transport_module or transport_config: defaults.
+pair([], [], []) ->
+ [{[?DEFAULT_TMOD], ?DEFAULT_TCFG, ?DEFAULT_TTMO}];
+
+%% One transport_module, one transport_config.
+pair([], [M], [{[], Cfg, Tmo}]) ->
+ [{[M], Cfg, Tmo}];
+
+%% Trailing transport_module: default transport_config.
+pair([], [_|_] = Mods, Acc) ->
+ lists:reverse(acc({Mods, ?DEFAULT_TCFG, ?DEFAULT_TTMO}, Acc));
+
+pair([], [], Acc) ->
+ lists:reverse(def(Acc)).
+
+%% acc/2
+
+acc(T, Acc) ->
+ [T | def(Acc)].
+
+%% def/1
+%%
+%% Default module of previous pair if none were specified.
+
+def([{[], Cfg, Tmo} | Acc]) ->
+ [{[?DEFAULT_TMOD], Cfg, Tmo} | Acc];
+def(Acc) ->
+ Acc.
+
+%% start/4
+
+start(T, Svc, [{Ms, Cfg, Tmo} | Rest], Errs) ->
+ start(T, Ms, Cfg, Svc, Tmo, Rest, Errs);
+
+start(_, _, [], Errs) ->
+ {error, Errs}.
+
+%% start/7
+
+start(T, [], _, Svc, _, Rest, Errs) ->
+ start(T, Svc, Rest, Errs);
+
+start(T, [M|Ms], Cfg, Svc, Tmo, Rest, Errs) ->
+ case start(M, [T, Svc, Cfg]) of
+ {ok, TPid} ->
+ {TPid, [], Tmo, {{T, M, Cfg}, Ms, Rest, Errs}};
+ {ok, TPid, [_|_] = Addrs} ->
+ {TPid, Addrs, Tmo, {{T, M, Cfg}, Ms, Rest, Errs}};
+ E ->
+ start(T, Ms, Cfg, Svc, Tmo, Rest, [E|Errs])
+ end.
+
+%% start/2
+
+start(Mod, Args) ->
+ apply(Mod, start, Args).
%%% ---------------------------------------------------------------------------
%%% # up/[12]
@@ -204,21 +311,6 @@ bang(undefined = No, _) ->
bang(Pid, T) ->
Pid ! T.
-%% split_transport/1
-%%
-%% Split options into transport module, transport config and
-%% remaining options.
-
-split_transport(Opts) ->
- {[M,C], _} = proplists:split(Opts, [transport_module,
- transport_config]),
- {value(M, diameter_tcp), value(C, [])}.
-
-value([{_,V}], _) ->
- V;
-value([], V) ->
- V.
-
%% call/1
call(Request) ->
diff --git a/lib/diameter/src/base/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index 99644814d2..bbda62c32b 100644
--- a/lib/diameter/src/base/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
@@ -54,6 +54,12 @@
-define(NO_INBAND_SECURITY, 0).
-define(TLS, 1).
+%% Keys in process dictionary.
+-define(CB_KEY, cb). %% capabilities callback
+-define(DWA_KEY, dwa). %% outgoing DWA
+-define(Q_KEY, q). %% transport start queue
+-define(START_KEY, start). %% start of connected transport
+
%% A 2xxx series Result-Code. Not necessarily 2001.
-define(IS_SUCCESS(N), 2 == (N) div 1000).
@@ -115,6 +121,11 @@
%%% Output: Pid
%%% ---------------------------------------------------------------------------
+-spec start(T, [Opt], #diameter_service{})
+ -> pid()
+ when T :: {connect|accept, diameter:transport_ref()},
+ Opt :: diameter:transport_opt().
+
%% diameter_config requires a non-empty list of applications on the
%% service but diameter_service then constrains the list to any
%% specified on the transport in question. Check here that the list is
@@ -143,18 +154,17 @@ init(T) ->
proc_lib:init_ack({ok, self()}),
gen_server:enter_loop(?MODULE, [], i(T)).
-i({WPid, T, Opts, #diameter_service{capabilities = Caps} = Svc0}) ->
- putr(dwa, dwa(Caps)),
+i({WPid, T, Opts, #diameter_service{capabilities = Caps} = Svc}) ->
+ putr(?DWA_KEY, dwa(Caps)),
{M, Ref} = T,
{[Ts], Rest} = proplists:split(Opts, [capabilities_cb]),
- putr(capabilities_cb, {Ref, [F || {_,F} <- Ts]}),
- {ok, TPid, Svc} = start_transport(T, Rest, Svc0),
- erlang:monitor(process, TPid),
+ putr(?CB_KEY, {Ref, [F || {_,F} <- Ts]}),
erlang:monitor(process, WPid),
+ {TPid, Addrs} = start_transport(T, Rest, Svc),
#state{parent = WPid,
transport = TPid,
mode = M,
- service = Svc}.
+ service = svc(Svc, Addrs)}.
%% The transport returns its local ip addresses so that different
%% transports on the same service can use different local addresses.
%% The local addresses are put into Host-IP-Address avps here when
@@ -164,18 +174,56 @@ i({WPid, T, Opts, #diameter_service{capabilities = Caps} = Svc0}) ->
%% watchdog start (start/2) succeeds regardless so as not to crash the
%% service.
-start_transport(T, Opts, Svc) ->
- case diameter_peer:start(T, Opts, Svc) of
- {ok, TPid} ->
- {ok, TPid, Svc};
- {ok, TPid, [_|_] = Addrs} ->
- #diameter_service{capabilities = Caps0} = Svc,
- Caps = Caps0#diameter_caps{host_ip_address = Addrs},
- {ok, TPid, Svc#diameter_service{capabilities = Caps}};
+start_transport(T, Opts, #diameter_service{capabilities = Caps} = Svc) ->
+ Addrs0 = Caps#diameter_caps.host_ip_address,
+ start_transport(Addrs0, {T, Opts, Svc}).
+
+start_transport(Addrs0, T) ->
+ case diameter_peer:start(T) of
+ {TPid, Addrs, Tmo, Data} ->
+ erlang:monitor(process, TPid),
+ q_next(TPid, Addrs0, Tmo, Data),
+ {TPid, addrs(Addrs, Addrs0)};
No ->
exit({shutdown, No})
end.
+addrs([], Addrs0) ->
+ Addrs0;
+addrs(Addrs, _) ->
+ Addrs.
+
+svc(Svc, []) ->
+ Svc;
+svc(Svc, Addrs) ->
+ readdr(Svc, Addrs).
+
+readdr(#diameter_service{capabilities = Caps0} = Svc, Addrs) ->
+ Caps = Caps0#diameter_caps{host_ip_address = Addrs},
+ Svc#diameter_service{capabilities = Caps}.
+
+%% The 4-tuple Data returned from diameter_peer:start/1 identifies the
+%% transport module/config use to start the transport process in
+%% question as well as any alternates to try if a connection isn't
+%% established within Tmo.
+q_next(TPid, Addrs0, Tmo, {_,_,_,_} = Data) ->
+ send_after(Tmo, {connection_timeout, TPid}),
+ putr(?Q_KEY, {Addrs0, Tmo, Data}).
+
+%% Connection has been established: retain the started
+%% pid/module/config in the process dictionary. This is a part of the
+%% interface defined by this module, so that the transport pid can be
+%% found when constructing service_info (in order to extract further
+%% information from it).
+keep_transport(TPid) ->
+ {_, _, {{_,_,_} = T, _, _, _}} = eraser(?Q_KEY),
+ putr(?START_KEY, {TPid, T}).
+
+send_after(infinity, _) ->
+ ok;
+send_after(Tmo, T) ->
+ erlang:send_after(Tmo, self(), T).
+
%% handle_call/3
handle_call(_, _, State) ->
@@ -240,25 +288,48 @@ eraser(Key) ->
%% Connection to peer.
transition({diameter, {TPid, connected, Remote}},
- #state{state = PS,
+ #state{transport = TPid,
+ state = PS,
mode = M}
= S) ->
'Wait-Conn-Ack' = PS, %% assert
connect = M, %%
- send_CER(S#state{mode = {M, Remote},
- transport = TPid});
+ keep_transport(TPid),
+ send_CER(S#state{mode = {M, Remote}});
%% Connection from peer.
transition({diameter, {TPid, connected}},
- #state{state = PS,
+ #state{transport = TPid,
+ state = PS,
mode = M,
parent = Pid}
= S) ->
'Wait-Conn-Ack' = PS, %% assert
accept = M, %%
+ keep_transport(TPid),
Pid ! {accepted, self()},
- start_timer(S#state{state = recv_CER,
- transport = TPid});
+ start_timer(S#state{state = recv_CER});
+
+%% Connection established after receiving a connection_timeout
+%% message. This may be followed by an incoming message which arrived
+%% before the transport was killed and this can't be distinguished
+%% from one from the transport that's been started to replace it.
+transition({diameter, {_, connected}}, _) ->
+ {stop, connection_timeout};
+transition({diameter, {_, connected, _}}, _) ->
+ {stop, connection_timeout};
+
+%% Connection has timed out: start an alternate.
+transition({connection_timeout = T, TPid},
+ #state{transport = TPid,
+ state = 'Wait-Conn-Ack'}
+ = S) ->
+ exit(TPid, {shutdown, T}),
+ start_next(S);
+
+%% Connect timeout after connection or alternate start: ignore.
+transition({connection_timeout, _}, _) ->
+ ok;
%% Incoming message from the transport.
transition({diameter, {recv, Pkt}}, S) ->
@@ -305,14 +376,21 @@ transition({resolve_port, _Pid} = T, #state{transport = TPid}) ->
TPid ! T,
ok;
-%% Parent or transport has died.
-transition({'DOWN', _, process, P, _},
- #state{parent = Pid,
- transport = TPid})
- when P == Pid;
- P == TPid ->
+%% Parent has died.
+transition({'DOWN', _, process, WPid, _},
+ #state{parent = WPid}) ->
stop;
+%% Transport has died before connection timeout.
+transition({'DOWN', _, process, TPid, _},
+ #state{transport = TPid}
+ = S) ->
+ start_next(S);
+
+%% Transport has died after connection timeout.
+transition({'DOWN', _, process, _, _}, _) ->
+ ok;
+
%% State query.
transition({state, Pid}, #state{state = S, transport = TPid}) ->
Pid ! {self(), [S, TPid]},
@@ -320,6 +398,19 @@ transition({state, Pid}, #state{state = S, transport = TPid}) ->
%% Crash on anything unexpected.
+%% start_next/1
+
+start_next(#state{service = Svc0} = S) ->
+ case getr(?Q_KEY) of
+ {Addrs0, Tmo, Data} ->
+ Svc = readdr(Svc0, Addrs0),
+ {TPid, Addrs} = start_transport(Addrs0, {Svc, Tmo, Data}),
+ S#state{transport = TPid,
+ service = svc(Svc, Addrs)};
+ undefined ->
+ stop
+ end.
+
%% send_CER/1
send_CER(#state{mode = {connect, Remote},
@@ -649,7 +740,7 @@ rc([RC|_]) ->
%% answer/2
answer('DWR', _) ->
- getr(dwa);
+ getr(?DWA_KEY);
answer(Name, #state{service = #diameter_service{capabilities = Caps}}) ->
a(Name, Caps).
@@ -749,15 +840,15 @@ caps(#state{service = Svc}) ->
%% caps_cb/1
caps_cb(Caps) ->
- {Ref, Ts} = eraser(capabilities_cb),
- ccb(Ts, [Ref, Caps]).
+ {Ref, Ts} = eraser(?CB_KEY),
+ caps_cb(Ts, [Ref, Caps]).
-ccb([], _) ->
+caps_cb([], _) ->
ok;
-ccb([F | Rest], T) ->
+caps_cb([F | Rest], T) ->
case diameter_lib:eval([F|T]) of
ok ->
- ccb(Rest, T);
+ caps_cb(Rest, T);
N when ?IS_SUCCESS(N) -> %% 2xxx result code: accept immediately
N;
Res ->
diff --git a/lib/diameter/src/modules.mk b/lib/diameter/src/modules.mk
index 7a700a6d53..5d3c4157ae 100644
--- a/lib/diameter/src/modules.mk
+++ b/lib/diameter/src/modules.mk
@@ -58,6 +58,7 @@ RT_MODULES = \
transport/diameter_tcp_sup \
transport/diameter_sctp \
transport/diameter_sctp_sup \
+ transport/diameter_transport \
transport/diameter_transport_sup
# Handwritten (compile time) modules not included in the app file.
diff --git a/lib/diameter/src/transport/diameter_etcp.erl b/lib/diameter/src/transport/diameter_etcp.erl
index d925d62545..cd62cf34fa 100644
--- a/lib/diameter/src/transport/diameter_etcp.erl
+++ b/lib/diameter/src/transport/diameter_etcp.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2012. 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
@@ -36,7 +36,9 @@
send/2,
close/1,
setopts/2,
- port/1]).
+ sockname/1,
+ peername/1,
+ getstat/1]).
%% child start
-export([start_link/1]).
@@ -113,10 +115,20 @@ close(Pid) ->
setopts(_, _) ->
ok.
-%% port/1
+%% sockname/1
-port(_) ->
- 3868. %% We have no local port: fake it.
+sockname(_) ->
+ {error, ?MODULE}.
+
+%% peername/1
+
+peername(_) ->
+ {error, ?MODULE}.
+
+%% getstat/1
+
+getstat(_) ->
+ {error, ?MODULE}.
%% start_link/1
diff --git a/lib/diameter/src/transport/diameter_sctp.erl b/lib/diameter/src/transport/diameter_sctp.erl
index 68b0342cd5..9a65834647 100644
--- a/lib/diameter/src/transport/diameter_sctp.erl
+++ b/lib/diameter/src/transport/diameter_sctp.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2012. 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
@@ -37,12 +37,18 @@
code_change/3,
terminate/2]).
+-export([info/1]). %% service_info callback
+
-export([ports/0,
ports/1]).
-include_lib("kernel/include/inet_sctp.hrl").
-include_lib("diameter/include/diameter.hrl").
+%% Keys into process dictionary.
+-define(INFO_KEY, info).
+-define(REF_KEY, ref).
+
-define(ERROR(T), erlang:error({T, ?MODULE, ?LINE})).
%% The default port for a listener.
@@ -134,6 +140,24 @@ start_link(T) ->
diameter_lib:spawn_opts(server, [])).
%% ---------------------------------------------------------------------------
+%% # info/1
+%% ---------------------------------------------------------------------------
+
+info({gen_sctp, Sock}) ->
+ lists:flatmap(fun(K) -> info(K, Sock) end,
+ [{socket, sockname},
+ {peer, peername},
+ {statistics, getstat}]).
+
+info({K,F}, Sock) ->
+ case inet:F(Sock) of
+ {ok, V} ->
+ [{K,V}];
+ _ ->
+ []
+ end.
+
+%% ---------------------------------------------------------------------------
%% # init/1
%% ---------------------------------------------------------------------------
@@ -157,7 +181,7 @@ i({connect, Pid, Opts, Addrs, Ref}) ->
RAs = [diameter_lib:ipaddr(A) || {raddr, A} <- As],
[RP] = [P || {rport, P} <- Ps] ++ [P || P <- [?DEFAULT_PORT], [] == Ps],
{LAs, Sock} = open(Addrs, Rest, 0),
- putr(ref, Ref),
+ putr(?REF_KEY, Ref),
proc_lib:init_ack({ok, self(), LAs}),
erlang:monitor(process, Pid),
#transport{parent = Pid,
@@ -169,7 +193,7 @@ i({connect, _, _, _} = T) -> %% from old code
%% An accepting transport spawned by diameter.
i({accept, Pid, LPid, Sock, Ref})
when is_pid(Pid) ->
- putr(ref, Ref),
+ putr(?REF_KEY, Ref),
proc_lib:init_ack({ok, self()}),
erlang:monitor(process, Pid),
erlang:monitor(process, LPid),
@@ -181,7 +205,7 @@ i({accept, _, _, _} = T) -> %% from old code
%% An accepting transport spawned at association establishment.
i({accept, Ref, LPid, Sock, Id}) ->
- putr(ref, Ref),
+ putr(?REF_KEY, Ref),
proc_lib:init_ack({ok, self()}),
MRef = erlang:monitor(process, LPid),
%% Wait for a signal that the transport has been started before
@@ -554,10 +578,9 @@ recv({_, #sctp_assoc_change{state = comm_up,
mode = {T, _},
socket = Sock}
= S) ->
- Ref = getr(ref),
+ Ref = getr(?REF_KEY),
is_reference(Ref) %% started in new code
- andalso
- (true = diameter_reg:add_new({?MODULE, T, {Ref, {Id, Sock}}})),
+ andalso publish(T, Ref, Id, Sock),
up(S#transport{assoc_id = Id,
streams = {IS, OS}});
@@ -599,6 +622,10 @@ recv({_, #sctp_paddr_change{}}, _) ->
recv({_, #sctp_pdapi_event{}}, _) ->
ok.
+publish(T, Ref, Id, Sock) ->
+ true = diameter_reg:add_new({?MODULE, T, {Ref, {Id, Sock}}}),
+ putr(?INFO_KEY, {gen_sctp, Sock}). %% for info/1
+
%% up/1
up(#transport{parent = Pid,
diff --git a/lib/diameter/src/transport/diameter_tcp.erl b/lib/diameter/src/transport/diameter_tcp.erl
index 78dbda6888..597f2f14d7 100644
--- a/lib/diameter/src/transport/diameter_tcp.erl
+++ b/lib/diameter/src/transport/diameter_tcp.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2012. 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
@@ -37,11 +37,17 @@
code_change/3,
terminate/2]).
+-export([info/1]). %% service_info callback
+
-export([ports/0,
ports/1]).
-include_lib("diameter/include/diameter.hrl").
+%% Keys into process dictionary.
+-define(INFO_KEY, info).
+-define(REF_KEY, ref).
+
-define(ERROR(T), erlang:error({T, ?MODULE, ?LINE})).
-define(DEFAULT_PORT, 3868). %% RFC 3588, ch 2.1
@@ -111,6 +117,33 @@ start_link(T) ->
diameter_lib:spawn_opts(server, [])).
%% ---------------------------------------------------------------------------
+%% # info/1
+%% ---------------------------------------------------------------------------
+
+info({Mod, Sock}) ->
+ lists:flatmap(fun(K) -> info(Mod, K, Sock) end,
+ [{socket, fun sockname/2},
+ {peer, fun peername/2},
+ {statistics, fun getstat/2}
+ | ssl_info(Mod, Sock)]).
+
+info(Mod, {K,F}, Sock) ->
+ case F(Mod, Sock) of
+ {ok, V} ->
+ [{K,V}];
+ _ ->
+ []
+ end.
+
+ssl_info(ssl = M, Sock) ->
+ [{M, ssl_info(Sock)}];
+ssl_info(_, _) ->
+ [].
+
+ssl_info(Sock) ->
+ [{peercert, C} || {ok, C} <- [ssl:peercert(Sock)]].
+
+%% ---------------------------------------------------------------------------
%% # init/1
%% ---------------------------------------------------------------------------
@@ -133,7 +166,7 @@ i({T, Ref, Mod, Pid, Opts, Addrs})
MPid ! {stop, self()}, %% tell the monitor to die
M = if SslOpts -> ssl; true -> Mod end,
setopts(M, Sock),
- putr(ref, Ref),
+ putr(?REF_KEY, Ref),
#transport{parent = Pid,
module = M,
socket = Sock,
@@ -191,7 +224,7 @@ i(accept = T, Ref, Mod, Pid, Opts, Addrs) ->
{LAddr, LSock} = listener(Ref, {Mod, Opts, Addrs}),
proc_lib:init_ack({ok, self(), [LAddr]}),
Sock = ok(accept(Mod, LSock)),
- true = diameter_reg:add_new({?MODULE, T, {Ref, Sock}}),
+ publish(Mod, T, Ref, Sock),
diameter_peer:up(Pid),
Sock;
@@ -202,10 +235,14 @@ i(connect = T, Ref, Mod, Pid, Opts, Addrs) ->
RPort = get_port(RP),
proc_lib:init_ack({ok, self(), [LAddr]}),
Sock = ok(connect(Mod, RAddr, RPort, gen_opts(LAddr, Rest))),
- true = diameter_reg:add_new({?MODULE, T, {Ref, Sock}}),
+ publish(Mod, T, Ref, Sock),
diameter_peer:up(Pid, {RAddr, RPort}),
Sock.
+publish(Mod, T, Ref, Sock) ->
+ true = diameter_reg:add_new({?MODULE, T, {Ref, Sock}}),
+ putr(?INFO_KEY, {Mod, Sock}). %% for info/1
+
ok({ok, T}) ->
T;
ok(No) ->
@@ -521,7 +558,7 @@ tls_handshake(Type, true, #transport{socket = Sock,
ssl = Opts}
= S) ->
{ok, SSock} = tls(Type, Sock, [{cb_info, ?TCP_CB(M)} | Opts]),
- Ref = getr(ref),
+ Ref = getr(?REF_KEY),
is_reference(Ref) %% started in new code
andalso
(true = diameter_reg:add_new({?MODULE, Type, {Ref, SSock}})),
@@ -696,12 +733,32 @@ setopts(M, Sock) ->
portnr(gen_tcp, Sock) ->
inet:port(Sock);
-portnr(ssl, Sock) ->
- case ssl:sockname(Sock) of
+portnr(M, Sock) ->
+ case M:sockname(Sock) of
{ok, {_Addr, PortNr}} ->
{ok, PortNr};
{error, _} = No ->
No
- end;
-portnr(M, Sock) ->
- M:port(Sock).
+ end.
+
+%% sockname/2
+
+sockname(gen_tcp, Sock) ->
+ inet:sockname(Sock);
+sockname(M, Sock) ->
+ M:sockname(Sock).
+
+%% peername/2
+
+peername(gen_tcp, Sock) ->
+ inet:peername(Sock);
+peername(M, Sock) ->
+ M:peername(Sock).
+
+%% getstat/2
+
+getstat(gen_tcp, Sock) ->
+ inet:getstat(Sock);
+getstat(M, Sock) ->
+ M:getstat(Sock).
+%% Note that ssl:getstat/1 doesn't yet exist in R15B01.
diff --git a/lib/diameter/src/transport/diameter_transport.erl b/lib/diameter/src/transport/diameter_transport.erl
new file mode 100644
index 0000000000..ff4b6bbc6d
--- /dev/null
+++ b/lib/diameter/src/transport/diameter_transport.erl
@@ -0,0 +1,55 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2012. 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
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(diameter_transport).
+
+%%
+%% This module implements a transport start function that
+%% evaluates its config argument.
+%%
+
+%% Transport start functions
+-export([start/3,
+ select/3,
+ eval/3]).
+
+%% start/3
+
+%% Call a start function in this module ...
+start(T, Svc, {F,A}) ->
+ start(T, Svc, {?MODULE, F, [A]});
+
+%% ... or some other.
+start(T, Svc, F) ->
+ diameter_lib:eval([F, T, Svc]).
+
+%% select/3
+%%
+%% A start function that whose config argument is expected to return a
+%% new start function.
+
+select(T, Svc, F) ->
+ start(T, Svc, diameter_lib:eval([F, T, Svc])).
+
+%% eval/3
+%%
+%% A start function that simply evaluates its config argument.
+
+eval(_, _, F) ->
+ diameter_lib:eval(F).