mod_posix: Move everything to util.startup
This allows greater control over the order of events.
Notably, the internal ordering between daemonization, initialization of
libunbound and setup of signal handling is sensitive.
libunbound starts a separate thread for processing DNS requests.
If this thread is started before signal handling has been set up, it
will not inherit the signal handlers and instead behave as it would have
before signal handlers were set up, i.e. cause the whole process to
immediately exit.
libunbound is usually initialized on the first DNS request, usually
triggered by an outgoing s2s connection attempt.
If daemonization happens before signals have been set up, signals may
not be processed at all.
local set = require "prosody.util.set";
local secret = module:get_option_string("turn_external_secret");
local host = module:get_option_string("turn_external_host", module.host);
local user = module:get_option_string("turn_external_user");
local port = module:get_option_integer("turn_external_port", 3478, 1, 65535);
local ttl = module:get_option_period("turn_external_ttl", "1 day");
local tcp = module:get_option_boolean("turn_external_tcp", false);
local tls_port = module:get_option_integer("turn_external_tls_port", nil, 1, 65535);
if not secret then
module:log_status("error", "Failed to initialize: the 'turn_external_secret' option is not set in your configuration");
return;
end
local services = set.new({ "stun-udp"; "turn-udp" });
if tcp then
services:add("stun-tcp");
services:add("turn-tcp");
end
if tls_port then
services:add("turns-tcp");
end
module:depends "external_services";
for _, type in ipairs({ "stun"; "turn"; "turns" }) do
for _, transport in ipairs({"udp"; "tcp"}) do
if services:contains(type .. "-" .. transport) then
module:add_item("external_service", {
type = type;
transport = transport;
host = host;
port = type == "turns" and tls_port or port;
username = type == "turn" and user or nil;
secret = type == "turn" and secret or nil;
ttl = type == "turn" and ttl or nil;
})
end
end
end