add message queue

service/pingqueue.lua

@@ -0,0 +1,12 @@
+local skynet = require "skynet"
+local mqueue = require "mqueue"
+
+skynet.start(function()
+	local id = 0
+	local pingserver = skynet.newservice "pingserver"
+	mqueue.register(function(str)
+		id = id + 1
+		str = string.format("id = %d , %s",id, str)
+		return skynet.call(pingserver, "lua", "PING", str)
+	end)
+end)