Chapril/xmpp.chapril.org-ejabberd
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XEP-0198: Change state on gen_tcp:send/2 failure

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When Stream Management is enabled and a gen_tcp:send/2 call fails, go
into the 'wait_for_resume' state immediately.  This makes sure that
gen_tcp:send/2 won't be called again, which might avoid an Erlang issue
where gen_tcp:send/2 apparently hangs despite 'send_timeout' (and
'send_timeout_close') being set.
This commit is contained in:
Holger Weiss 2014-09-06 20:34:32 +02:00
parent 11b2921971
commit 2e169167d4
1 changed files with 13 additions and 5 deletions
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18
src/ejabberd_c2s.erl
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@ -1838,7 +1838,8 @@ send_text(StateData, Text) when StateData#state.mgmt_state == active ->
?DEBUG("Send XML on stream = ~p", [Text]),
case catch (StateData#state.sockmod):send(StateData#state.socket, Text) of
{'EXIT', _} ->
(StateData#state.sockmod):close(StateData#state.socket);
(StateData#state.sockmod):close(StateData#state.socket),
error;
_ ->
ok
end;
@ -1857,8 +1858,13 @@ send_element(StateData, El) ->
send_stanza(StateData, Stanza) when StateData#state.mgmt_state == pending ->
mgmt_queue_add(StateData, Stanza);
send_stanza(StateData, Stanza) when StateData#state.mgmt_state == active ->
send_stanza_and_ack_req(StateData, Stanza),
mgmt_queue_add(StateData, Stanza);
NewStateData = case send_stanza_and_ack_req(StateData, Stanza) of
ok ->
StateData;
error ->
StateData#state{mgmt_state = pending}
end,
mgmt_queue_add(NewStateData, Stanza);
send_stanza(StateData, Stanza) ->
send_element(StateData, Stanza),
StateData.
@ -2455,13 +2461,15 @@ fsm_next_state_gc(StateName, PackedStateData) ->
%% fsm_next_state: Generate the next_state FSM tuple with different
%% timeout, depending on the future state
fsm_next_state(session_established, #state{mgmt_state = pending} = StateData) ->
fsm_next_state(wait_for_resume, StateData);
fsm_next_state(session_established, StateData) ->
{next_state, session_established, StateData,
?C2S_HIBERNATE_TIMEOUT};
fsm_next_state(wait_for_resume, #state{mgmt_timeout = 0} = StateData) ->
{stop, normal, StateData};
fsm_next_state(wait_for_resume, StateData)
when StateData#state.mgmt_state /= pending ->
fsm_next_state(wait_for_resume, #state{mgmt_pending_since = undefined} =
StateData) ->
?INFO_MSG("Waiting for resumption of stream for ~s",
[jlib:jid_to_string(StateData#state.jid)]),
{next_state, wait_for_resume,