diff options
Diffstat (limited to 'lib/diameter/src/transport')
| -rw-r--r-- | lib/diameter/src/transport/diameter_sctp.erl | 76 | ||||
| -rw-r--r-- | lib/diameter/src/transport/diameter_tcp.erl | 104 |
2 files changed, 108 insertions, 72 deletions
diff --git a/lib/diameter/src/transport/diameter_sctp.erl b/lib/diameter/src/transport/diameter_sctp.erl index 4a005b853d..f48e4347ee 100644 --- a/lib/diameter/src/transport/diameter_sctp.erl +++ b/lib/diameter/src/transport/diameter_sctp.erl @@ -98,7 +98,7 @@ -record(listener, {ref :: reference(), socket :: gen_sctp:sctp_socket(), - count = 0 :: uint(), %% attached transport processes + service = false :: false | pid(), %% service process pending = {0, queue:new()}, accept :: [match()]}). %% Field pending implements two queues: the first of transport-to-be @@ -129,11 +129,14 @@ -> {ok, pid(), [inet:ip_address()]} when Ref :: diameter:transport_ref(). -start(T, #diameter_service{capabilities = Caps}, Opts) +start(T, Svc, Opts) when is_list(Opts) -> + #diameter_service{capabilities = Caps, + pid = SPid} + = Svc, diameter_sctp_sup:start(), %% start supervisors on demand Addrs = Caps#diameter_caps.host_ip_address, - s(T, Addrs, lists:map(fun ip/1, Opts)). + s(T, Addrs, SPid, lists:map(fun ip/1, Opts)). ip({ifaddr, A}) -> {ip, A}; @@ -144,18 +147,22 @@ ip(T) -> %% when there is not yet an association to assign it, or at comm_up on %% a new association in which case the call retrieves a transport from %% the pending queue. -s({accept, Ref} = A, Addrs, Opts) -> - {LPid, LAs} = listener(Ref, {Opts, Addrs}), - try gen_server:call(LPid, {A, self()}, infinity) of - {ok, TPid} -> {ok, TPid, LAs} +s({accept, Ref} = A, Addrs, SPid, Opts) -> + {ok, LPid, LAs} = listener(Ref, {Opts, Addrs}), + try gen_server:call(LPid, {A, self(), SPid}, infinity) of + {ok, TPid} -> + {ok, TPid, LAs}; + No -> + {error, No} catch - exit: Reason -> {error, Reason} + exit: Reason -> + {error, Reason} end; %% This implementation is due to there being no accept call in %% gen_sctp in order to be able to accept a new association only %% *after* an accepting transport has been spawned. -s({connect = C, Ref}, Addrs, Opts) -> +s({connect = C, Ref}, Addrs, _SPid, Opts) -> diameter_sctp_sup:start_child({C, self(), Opts, Addrs, Ref}). %% start_link/1 @@ -281,24 +288,23 @@ i({K, Ref}, #transport{mode = {accept, _}} = S) -> %% Accepting processes can be started concurrently: ensure only one %% listener is started. -listener(LRef, T) -> - diameter_sync:call({?MODULE, listener, LRef}, - {?MODULE, listener, [{LRef, T}]}, +listener(Ref, T) -> + diameter_sync:call({?MODULE, listener, Ref}, + {?MODULE, listener, [{Ref, T}]}, infinity, infinity). -listener({LRef, T}) -> - l(diameter_reg:match({?MODULE, listener, {LRef, '_'}}), LRef, T). +listener({Ref, T}) -> + l(diameter_reg:match({?MODULE, listener, {Ref, '_'}}), Ref, T). %% Existing listening process ... l([{{?MODULE, listener, {_, AS}}, LPid}], _, _) -> - {LAs, _Sock} = AS, - {LPid, LAs}; + {LAs, _Sock} = AS, + {ok, LPid, LAs}; %% ... or not. -l([], LRef, T) -> - {ok, LPid, LAs} = diameter_sctp_sup:start_child({listen, LRef, T}), - {LPid, LAs}. +l([], Ref, T) -> + diameter_sctp_sup:start_child({listen, Ref, T}). %% open/3 @@ -364,11 +370,17 @@ type(T) -> %% # handle_call/3 %% --------------------------------------------------------------------------- -handle_call({{accept, Ref}, Pid}, _, #listener{ref = Ref, - count = K} - = S) -> +handle_call({{accept, Ref}, Pid}, _, #listener{ref = Ref} = S) -> {TPid, NewS} = accept(Ref, Pid, S), - {reply, {ok, TPid}, NewS#listener{count = K+1}}; + {reply, {ok, TPid}, NewS}; + +handle_call({{accept, _} = T, Pid, SPid}, From, #listener{service = P} = S) -> + handle_call({T, Pid}, From, if not is_pid(P), is_pid(SPid) -> + monitor(process, SPid), + S#listener{service = SPid}; + true -> + S + end); handle_call(_, _, State) -> {reply, nok, State}. @@ -441,6 +453,13 @@ l({sctp, Sock, _RA, _RP, Data} = T, #listener{socket = Sock, setopts(Sock), NewS; +%% Service process has died. +l({'DOWN', _, process, Pid, _} = T, #listener{service = Pid, + socket = Sock}) -> + gen_sctp:close(Sock), + x(T); + +%% Accepting process has died. l({'DOWN', _MRef, process, TPid, _}, #listener{pending = {_,Q}} = S) -> down(queue:member(TPid, Q), TPid, S); @@ -454,20 +473,17 @@ l({transport, remove, _} = T, #listener{socket = Sock}) -> %% Accepting transport has died. %% One that's waiting for transport start in the pending queue ... -down(true, TPid, #listener{pending = {N,Q}, - count = K} - = S) -> +down(true, TPid, #listener{pending = {N,Q}} = S) -> NQ = queue:filter(fun(P) -> P /= TPid end, Q), if N < 0 -> %% awaiting an association ... - S#listener{count = K-1, - pending = {N+1, NQ}}; + S#listener{pending = {N+1, NQ}}; true -> %% ... or one has been assigned S#listener{pending = {N-1, NQ}} end; %% ... or one that's already attached. -down(false, _TPid, #listener{count = K} = S) -> - S#listener{count = K-1}. +down(false, _TPid, S) -> + S. %% t/2 %% diff --git a/lib/diameter/src/transport/diameter_tcp.erl b/lib/diameter/src/transport/diameter_tcp.erl index 546c2cfa5e..44abc5c3b4 100644 --- a/lib/diameter/src/transport/diameter_tcp.erl +++ b/lib/diameter/src/transport/diameter_tcp.erl @@ -71,11 +71,8 @@ %% a process owning the listening port. %% Listener process state. --record(listener, {socket :: inet:socket(), - count = 1 :: non_neg_integer()}). %% accepting processes -%% The count of accepting processes was previously used to terminate -%% the listening process, but diameter_reg:subscribe/2 is now used for -%% this. Leave the the count for trace purposes. +-record(listener, {socket :: inet:socket(), + service = false :: false | pid()}). %% service process %% Monitor process state. -record(monitor, @@ -138,11 +135,15 @@ | {ok, pid()} when Ref :: diameter:transport_ref(). -start({T, Ref}, #diameter_service{capabilities = Caps}, Opts) -> +start({T, Ref}, Svc, Opts) -> + #diameter_service{capabilities = Caps, + pid = SPid} + = Svc, + diameter_tcp_sup:start(), %% start tcp supervisors on demand {Mod, Rest} = split(Opts), Addrs = Caps#diameter_caps.host_ip_address, - Arg = {T, Ref, Mod, self(), Rest, Addrs}, + Arg = {T, Ref, Mod, self(), Rest, Addrs, SPid}, diameter_tcp_sup:start_child(Arg). split([{module, M} | Opts]) -> @@ -196,7 +197,7 @@ init(T) -> %% i/1 %% A transport process. -i({T, Ref, Mod, Pid, Opts, Addrs}) +i({T, Ref, Mod, Pid, Opts, Addrs, SPid}) when T == accept; T == connect -> monitor(process, Pid), @@ -214,7 +215,7 @@ i({T, Ref, Mod, Pid, Opts, Addrs}) ?DEFAULT_FRAGMENT_TIMEOUT), ?IS_TIMEOUT(Tmo) orelse ?ERROR({fragment_timer, Tmo}), Throttle = proplists:get_value(throttle_cb, OwnOpts, false), - Sock = init(T, Ref, Mod, Pid, SslOpts, Rest, Addrs), + Sock = init(T, Ref, Mod, Pid, SslOpts, Rest, Addrs, SPid), MPid ! {stop, self()}, %% tell the monitor to die M = if SslOpts -> ssl; true -> Mod end, putr(?REF_KEY, Ref), @@ -228,6 +229,11 @@ i({T, Ref, Mod, Pid, Opts, Addrs}) %% Put the reference in the process dictionary since we now use it %% advertise the ssl socket after TLS upgrade. +i({T, _Ref, _Mod, _Pid, _Opts, _Addrs} = Arg) %% from old code + when T == accept; + T == connect -> + i(erlang:append_element(Arg, _SPid = false)); + %% A monitor process to kill the transport if the parent dies. i(#monitor{parent = Pid, transport = TPid} = S) -> proc_lib:init_ack({ok, self()}), @@ -240,16 +246,18 @@ i(#monitor{parent = Pid, transport = TPid} = S) -> %% death. However, a link can be unlinked and this is exactly what %% gen_tcp seems to so. Links should be left to supervisors. -i({listen, LRef, APid, {Mod, Opts, Addrs}}) -> - [_] = diameter_config:subscribe(LRef, transport), %% assert existence +i({listen = L, Ref, _APid, T}) -> %% from old code + i({L, Ref, T}); + +i({listen, Ref, {Mod, Opts, Addrs}}) -> + [_] = diameter_config:subscribe(Ref, transport), %% assert existence {[LA, LP], Rest} = proplists:split(Opts, [ip, port]), LAddrOpt = get_addr(LA, Addrs), LPort = get_port(LP), {ok, LSock} = Mod:listen(LPort, gen_opts(LAddrOpt, Rest)), LAddr = laddr(LAddrOpt, Mod, LSock), - true = diameter_reg:add_new({?MODULE, listener, {LRef, {LAddr, LSock}}}), + true = diameter_reg:add_new({?MODULE, listener, {Ref, {LAddr, LSock}}}), proc_lib:init_ack({ok, self(), {LAddr, LSock}}), - monitor(process, APid), #listener{socket = LSock}. laddr([], Mod, Sock) -> @@ -268,21 +276,22 @@ ssl_opts([{ssl_options, Opts}]) ssl_opts(T) -> ?ERROR({ssl_options, T}). -%% init/7 +%% init/8 %% Establish a TLS connection before capabilities exchange ... -init(Type, Ref, Mod, Pid, true, Opts, Addrs) -> - init(Type, Ref, ssl, Pid, [{cb_info, ?TCP_CB(Mod)} | Opts], Addrs); +init(Type, Ref, Mod, Pid, true, Opts, Addrs, SPid) -> + init(Type, Ref, ssl, Pid, [{cb_info, ?TCP_CB(Mod)} | Opts], Addrs, SPid); %% ... or not. -init(Type, Ref, Mod, Pid, _, Opts, Addrs) -> - init(Type, Ref, Mod, Pid, Opts, Addrs). +init(Type, Ref, Mod, Pid, _, Opts, Addrs, SPid) -> + init(Type, Ref, Mod, Pid, Opts, Addrs, SPid). -%% init/6 +%% init/7 -init(accept = T, Ref, Mod, Pid, Opts, Addrs) -> +init(accept = T, Ref, Mod, Pid, Opts, Addrs, SPid) -> {[Matches], Rest} = proplists:split(Opts, [accept]), - {LAddr, LSock} = listener(Ref, {Mod, Rest, Addrs}), + {ok, LPid, {LAddr, LSock}} = listener(Ref, {Mod, Rest, Addrs}), + ok = gen_server:call(LPid, {accept, SPid}, infinity), proc_lib:init_ack({ok, self(), [LAddr]}), Sock = ok(accept(Mod, LSock)), ok = accept_peer(Mod, Sock, accept(Matches)), @@ -290,7 +299,7 @@ init(accept = T, Ref, Mod, Pid, Opts, Addrs) -> diameter_peer:up(Pid), Sock; -init(connect = T, Ref, Mod, Pid, Opts, Addrs) -> +init(connect = T, Ref, Mod, Pid, Opts, Addrs, _SPid) -> {[LA, RA, RP], Rest} = proplists:split(Opts, [ip, raddr, rport]), LAddrOpt = get_addr(LA, Addrs), RAddr = get_addr(RA), @@ -344,24 +353,26 @@ accept(Opts) -> %% Accepting processes can be started concurrently: ensure only one %% listener is started. -listener(LRef, T) -> - diameter_sync:call({?MODULE, listener, LRef}, - {?MODULE, listener, [{LRef, T, self()}]}, +listener(Ref, T) -> + diameter_sync:call({?MODULE, listener, Ref}, + {?MODULE, listener, [{Ref, T, self()}]}, infinity, infinity). -listener({LRef, T, TPid}) -> - l(diameter_reg:match({?MODULE, listener, {LRef, '_'}}), LRef, T, TPid). +%% listener/1 + +listener({Ref, T, _TPid}) -> + l(diameter_reg:match({?MODULE, listener, {Ref, '_'}}), Ref, T). + +%% l/3 %% Existing listening process ... -l([{{?MODULE, listener, {_, AS}}, LPid}], _, _, TPid) -> - LPid ! {accept, TPid}, - AS; +l([{{?MODULE, listener, {_, AS}}, LPid}], _, _) -> + {ok, LPid, AS}; %% ... or not. -l([], LRef, T, TPid) -> - {ok, _, AS} = diameter_tcp_sup:start_child({listen, LRef, TPid, T}), - AS. +l([], Ref, T) -> + diameter_tcp_sup:start_child({listen, Ref, T}). %% get_addr/1 @@ -440,6 +451,14 @@ portnr(Sock) -> %% # handle_call/3 %% --------------------------------------------------------------------------- +handle_call({accept, SPid}, _From, #listener{service = P} = S) -> + {reply, ok, if not is_pid(P), is_pid(SPid) -> + monitor(process, SPid), + S#listener{service = SPid}; + true -> + S + end}; + handle_call(_, _, State) -> {reply, nok, State}. @@ -507,19 +526,20 @@ m({'DOWN', _, process, Pid, _}, #monitor{parent = Pid, %% %% Transition listener state. -%% An accepting transport is attaching. -l({accept, TPid}, #listener{count = N} = S) -> - monitor(process, TPid), - S#listener{count = N+1}; - -%% Accepting process has died. -l({'DOWN', _, process, _, _}, #listener{count = N} = S) -> - S#listener{count = N-1}; +%% Service process has died. +l({'DOWN', _, process, Pid, _} = T, #listener{service = Pid, + socket = Sock}) -> + gen_tcp:close(Sock), + x(T); %% Transport has been removed. l({transport, remove, _} = T, #listener{socket = Sock}) -> gen_tcp:close(Sock), - x(T). + x(T); + +%% Possibly death of an accepting process monitored in old code. +l(_, S) -> + S. %% t/2 %% |