add skynet.harbor.linkmaster

examples/main_log.lua

@@ -1,9 +1,16 @@
 local skynet = require "skynet"
+local harbor = require "skynet.harbor"
+
+local function monitor_master()
+	harbor.linkmaster()
+	print("master is down")
+	skynet.exit()
+end
 
 skynet.start(function()
 	print("Log server start")
 	skynet.monitor "simplemonitor"
 	local log = skynet.newservice("globallog")
-	skynet.exit()
+	skynet.fork(monitor_master)
 end)