feat(watchdog): implement keepalive mechanism and enhance connection handling

main.go

@@ -12,8 +12,8 @@ import (
 	"super-frpc/frpLogger"
 	"super-frpc/global"
 	"super-frpc/postLog"
-	"super-frpc/sys"
 	"super-frpc/session"
+	"super-frpc/sys"
 	"super-frpc/utils"
 	"super-frpc/watchdog"
 	"syscall"
@@ -81,6 +81,13 @@ func main() {
 		} else {
 			postLog.Info(fmt.Sprintf("Connected to Watchdog at %s:%d", "127.0.0.1", global.CurrentConfig.Watchdog.Port))
 			global.Is.WatchdogConnected = true
+
+			go func() {
+				if err := watchdog.StartKeepAlive(); err != nil {
+					postLog.Error(fmt.Sprintf("Watchdog keepalive stopped: %v", err))
+					global.Is.WatchdogConnected = false
+				}
+			}()
 		}
 	}