refactor(watchdog): remove tcp socket connection and add local unix sock connection

watchdog/keepalive.go

@@ -29,7 +29,7 @@ func StartKeepAlive() error {
 					continue
 				}
 
-				if Connect("127.0.0.1", global.CurrentConfig.Watchdog.Port) {
+				if err = Init(); err == nil && Connect() {
 					global.Is.WatchdogConnected = true
 					postLog.Info("[watchdog] successfully reconnected to watchdog")
 					lastErr = nil
@@ -37,7 +37,7 @@ func StartKeepAlive() error {
 				}
 
 				lastErr = fmt.Errorf("failed to connect to watchdog")
-				time.Sleep(500 * time.Millisecond)
+				time.Sleep(1000 * time.Millisecond)
 			}
 
 			if lastErr != nil {