rewrite watchdog/agent, use new gate

examples/agent.lua

@@ -1,5 +1,7 @@
 local skynet = require "skynet"
-local client = ...
+local client
+
+local CMD = {}
 
 skynet.register_protocol {
 	name = "client",
@@ -8,12 +10,25 @@ skynet.register_protocol {
 	unpack = skynet.tostring,
 	dispatch = function (session, address, text)
 		-- It's client, there is no session
-		--	skynet.send("LOG", "text", "client message :" .. text)
 		local result = skynet.call("SIMPLEDB", "text", text)
 		skynet.ret(result)
 	end
 }
 
-skynet.start(function()
+function CMD.start(gate , fd)
+	client = skynet.launch("client", fd)
+	skynet.call(gate, "lua", "forward", fd, client)
 	skynet.send(client,"text","Welcome to skynet")
+end
+
+function CMD.exit()
+	skynet.kill(client)
+	client = nil
+end
+
+skynet.start(function()
+	skynet.dispatch("lua", function(_,_, command, ...)
+		local f = CMD[command]
+		skynet.ret(skynet.pack(f(...)))
+	end)
 end)