==SERVER==
==========
-- Mod Channels
-- Requires dcbl_csm clientmod.
local channel = minetest.mod_channel_join("dcbl")
print(channel:is_writeable())

minetest.register_on_modchannel_message(function(channel_name, sender, message)
        print("channel_name:", channel_name)
        print("sender:", sender)
        print("message:", message)
end)

--[[minetest.register_on_modchannel_signal(function(channel_name, signal)
        print("channel_name:", channel_name)
        print("signal:", signal)
end)]]

minetest.register_chatcommand("c", {
        func = function(name, param)
                channel:send_all("hi")
        end,
})

==CLIENT==
==========
local hl = minetest.sound_play("dcbl_front_center")
local hr = minetest.sound_play("default_place_node_hard")

local player
local channel
local t = 0

minetest.register_on_connect(function()
	player = minetest.localplayer
	channel = minetest.mod_channel_join("dcbl")
end)

minetest.register_on_modchannel_signal(function(
		channel_name, signal)
	print("channel_name:", channel_name)
	print("signal:", signal)
end)

minetest.register_on_modchannel_message(function(
		channel_name, sender, message)
	print("channel_name:", channel_name)
	print("sender:", sender)
	print("message:", message)
end)

-- STEP
minetest.register_globalstep(function(dtime)
	if t > 10 then
		t = 0
		print("ping")
	end
	t = dtime + t
end)

-- COMMANDS
minetest.register_chatcommand("dcbl", {
	description = "Interface with dcbl.",
	params = "hr, hl, send, join, leave, list, test",
	func = function(param)
		if param == "hr" then
			return hr
		elseif param == "hl" then
			return hl
		elseif param == "send" then
			channel:send_all("Hello world!")
		elseif param == "join" then
			channel = minetest.mod_channel_join("dcbl")
		elseif param == "leave" then
			channel:leave()
		elseif param == "list" then
			print(dump(channel))
		elseif param == "test" then
			print(channel:is_writeable())
		else
			return false, "No parameter specified."
		end
	end,
})