$ gor server/main.go
Start tick server at 224.0.0.1:9999
Tick: 2018-01-14 18:10:20.00889667 +0900 JST m=+17.978081526
Tick: 2018-01-14 18:10:30.009720607 +0900 JST m=+27.978486463
Tick: 2018-01-14 18:10:40.008499441 +0900 JST m=+37.976846297
$ gor client/main.go
Listen tick server at 224.0.0.1:9999
Server 10.26.124.131:63435
Now 2018-01-14 18:10:20.00889667 +0900 JST m=+17.978081526
Server 10.26.124.131:63435
Now 2018-01-14 18:10:30.009720607 +0900 JST m=+27.978486463
Server 10.26.124.131:63435
Now 2018-01-14 18:10:40.008499441 +0900 JST m=+37.976846297