aboutsummaryrefslogtreecommitdiffstats
path: root/lib/diameter/src/transport/diameter_sctp.erl
diff options
context:
space:
mode:
authorAnders Svensson <[email protected]>2011-10-09 20:33:36 +0200
committerAnders Svensson <[email protected]>2011-10-10 11:24:00 +0200
commit7b4bd37903c5d740c009adc6655db0e15587681a (patch)
treedc3949598b2d82b935101368f573cb8f350bcbc5 /lib/diameter/src/transport/diameter_sctp.erl
parenteb9656c94f4e92c2a4875dc628cb41d283dd4d2b (diff)
downloadotp-7b4bd37903c5d740c009adc6655db0e15587681a.tar.gz
otp-7b4bd37903c5d740c009adc6655db0e15587681a.tar.bz2
otp-7b4bd37903c5d740c009adc6655db0e15587681a.zip
Add port resolution interface to transport modules
Diffstat (limited to 'lib/diameter/src/transport/diameter_sctp.erl')
-rw-r--r--lib/diameter/src/transport/diameter_sctp.erl81
1 files changed, 65 insertions, 16 deletions
diff --git a/lib/diameter/src/transport/diameter_sctp.erl b/lib/diameter/src/transport/diameter_sctp.erl
index cb024c77b1..209f8c01c1 100644
--- a/lib/diameter/src/transport/diameter_sctp.erl
+++ b/lib/diameter/src/transport/diameter_sctp.erl
@@ -37,6 +37,9 @@
code_change/3,
terminate/2]).
+-export([ports/0,
+ ports/1]).
+
-include_lib("kernel/include/inet_sctp.hrl").
-include_lib("diameter/include/diameter.hrl").
@@ -118,8 +121,8 @@ s({accept, Ref} = A, Addrs, Opts) ->
%% gen_sctp in order to be able to accept a new association only
%% *after* an accepting transport has been spawned.
-s({connect = C, _}, Addrs, Opts) ->
- diameter_sctp_sup:start_child({C, self(), Opts, Addrs}).
+s({connect = C, Ref}, Addrs, Opts) ->
+ diameter_sctp_sup:start_child({C, self(), Opts, Addrs, Ref}).
%% start_link/1
@@ -149,28 +152,36 @@ i({listen, Ref, {Opts, Addrs}}) ->
socket = Sock});
%% A connecting transport.
-i({connect, Pid, Opts, Addrs}) ->
+i({connect, Pid, Opts, Addrs, Ref}) ->
{[As, Ps], Rest} = proplists:split(Opts, [raddr, rport]),
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),
proc_lib:init_ack({ok, self(), LAs}),
erlang:monitor(process, Pid),
#transport{parent = Pid,
mode = {connect, connect(Sock, RAs, RP, [])},
socket = Sock};
+i({connect, _, _, _} = T) -> %% from old code
+ x(T);
%% An accepting transport spawned by diameter.
-i({accept, Pid, LPid, Sock}) ->
+i({accept, Pid, LPid, Sock, Ref})
+ when is_pid(Pid) ->
+ putr(ref, Ref),
proc_lib:init_ack({ok, self()}),
erlang:monitor(process, Pid),
erlang:monitor(process, LPid),
#transport{parent = Pid,
mode = {accept, LPid},
socket = Sock};
+i({accept, _, _, _} = T) -> %% from old code
+ x(T);
%% An accepting transport spawned at association establishment.
i({accept, Ref, LPid, Sock, Id}) ->
+ putr(ref, Ref),
proc_lib:init_ack({ok, self()}),
MRef = erlang:monitor(process, LPid),
%% Wait for a signal that the transport has been started before
@@ -250,13 +261,33 @@ gen_opts(Opts) ->
[binary, {active, once} | Opts].
%% ---------------------------------------------------------------------------
+%% # ports/0-1
+%% ---------------------------------------------------------------------------
+
+ports() ->
+ Ts = diameter_reg:match({?MODULE, '_', '_'}),
+ [{type(T), N, Pid} || {{?MODULE, T, {_, {_, S}}}, Pid} <- Ts,
+ {ok, N} <- [inet:port(S)]].
+
+ports(Ref) ->
+ Ts = diameter_reg:match({?MODULE, '_', {Ref, '_'}}),
+ [{type(T), N, Pid} || {{?MODULE, T, {R, {_, S}}}, Pid} <- Ts,
+ R == Ref,
+ {ok, N} <- [inet:port(S)]].
+
+type(listener) ->
+ listen;
+type(T) ->
+ T.
+
+%% ---------------------------------------------------------------------------
%% # handle_call/3
%% ---------------------------------------------------------------------------
handle_call({{accept, Ref}, Pid}, _, #listener{ref = Ref,
count = N}
= S) ->
- {TPid, NewS} = accept(Pid, S),
+ {TPid, NewS} = accept(Ref, Pid, S),
{reply, {ok, TPid}, NewS#listener{count = N+1}};
handle_call(_, _, State) ->
@@ -306,6 +337,12 @@ terminate(_, #listener{socket = Sock}) ->
%% ---------------------------------------------------------------------------
+putr(Key, Val) ->
+ put({?MODULE, Key}, Val).
+
+getr(Key) ->
+ get({?MODULE, Key}).
+
%% start_timer/1
start_timer(#listener{count = 0} = S) ->
@@ -425,21 +462,27 @@ transition({'DOWN', _, process, Pid, _}, #transport{mode = {accept, Pid}}) ->
%% Parent process has died.
transition({'DOWN', _, process, Pid, _}, #transport{parent = Pid}) ->
- stop.
+ stop;
+
+%% Request for the local port number.
+transition({resolve_port, Pid}, #transport{socket = Sock})
+ when is_pid(Pid) ->
+ Pid ! inet:port(Sock),
+ ok.
%% Crash on anything unexpected.
-%% accept/2
+%% accept/3
%%
%% Start a new transport process or use one that's already been
%% started as a consequence of association establishment.
%% No pending associations: spawn a new transport.
-accept(Pid, #listener{socket = Sock,
- tmap = T,
- pending = {0,_} = Q}
- = S) ->
- Arg = {accept, Pid, self(), Sock},
+accept(Ref, Pid, #listener{socket = Sock,
+ tmap = T,
+ pending = {0,_} = Q}
+ = S) ->
+ Arg = {accept, Pid, self(), Sock, Ref},
{ok, TPid} = diameter_sctp_sup:start_child(Arg),
MRef = erlang:monitor(process, TPid),
ets:insert(T, [{MRef, TPid}, {TPid, MRef}]),
@@ -450,12 +493,12 @@ accept(Pid, #listener{socket = Sock,
%% Accepting transport has died. This can happen if a new transport is
%% started before the DOWN has arrived.
-accept(Pid, #listener{pending = [TPid | {0,_} = Q]} = S) ->
+accept(Ref, Pid, #listener{pending = [TPid | {0,_} = Q]} = S) ->
false = is_process_alive(TPid), %% assert
- accept(Pid, S#listener{pending = Q});
+ accept(Ref, Pid, S#listener{pending = Q});
%% Pending associations: attach to the first in the queue.
-accept(Pid, #listener{ref = Ref, pending = {N,Q}} = S) ->
+accept(_, Pid, #listener{ref = Ref, pending = {N,Q}} = S) ->
TPid = ets:first(Q),
TPid ! {Ref, Pid},
ets:delete(Q, TPid),
@@ -507,8 +550,14 @@ recv({[], #sctp_assoc_change{state = comm_up,
outbound_streams = OS,
inbound_streams = IS,
assoc_id = Id}},
- #transport{assoc_id = undefined}
+ #transport{assoc_id = undefined,
+ mode = {T, _},
+ socket = Sock}
= S) ->
+ Ref = getr(ref),
+ is_reference(Ref) %% started in new code
+ andalso
+ (true = diameter_reg:add_new({?MODULE, T, {Ref, {Id, Sock}}})),
up(S#transport{assoc_id = Id,
streams = {IS, OS}});