mod_debug_traceback: Remove direct POSIX signal handling, require Prosody 0.12+
Hooking an event is safer than directly hooking signals
For context see Prosody trunk rev 69faf3552d52
local disable_tls_ports = module:get_option_set("disable_tls_ports", {});
module:hook("stream-features", function (event)
if disable_tls_ports:contains(event.origin.conn:serverport()) then
module:log("error", "Disabling TLS for client on port %d", event.origin.conn:serverport());
event.origin.conn.starttls = false;
end
end, 1000);