mod_ping_muc: Delay ping a configurable amount of time If a server is restarting, checking immediately before it has a chance to complete its restart and get ready would often fail, preventing the possibility of transparent restarts as supported by Prosody's mod_muc. Reconnecting immediately when a connection is closed for being idle, or because the remote server is trying to reclaim some resources, is also counter-productive as the connection may fail. Also, if there is some Internet routing problem affecting s2s, it may help to wait a bit before checking, in case the problem resolved itself in the mean time.

module:set_global();

local traceback = require "util.debug".traceback;

local signal = module:get_option_string(module.name, "SIGUSR1");
module:hook("signal/" .. signal, function()
	module:log("info", "Received %s, writing traceback", signal);
	local f = io.open(prosody.paths.data .. "/traceback.txt", "a+");
	f:write(traceback(), "\n");
	f:close();
end);