fix windows build

main.go

@@ -16,6 +16,7 @@ import (
 	"github.com/mhsanaei/3x-ui/v2/logger"
 	"github.com/mhsanaei/3x-ui/v2/sub"
 	"github.com/mhsanaei/3x-ui/v2/util/crypto"
+	"github.com/mhsanaei/3x-ui/v2/util/sys"
 	"github.com/mhsanaei/3x-ui/v2/web"
 	"github.com/mhsanaei/3x-ui/v2/web/global"
 	"github.com/mhsanaei/3x-ui/v2/web/service"
@@ -70,7 +71,7 @@ func runWebServer() {
 
 	sigCh := make(chan os.Signal, 1)
 	// Trap shutdown signals
-	signal.Notify(sigCh, syscall.SIGHUP, syscall.SIGTERM, syscall.SIGUSR1)
+	signal.Notify(sigCh, syscall.SIGHUP, syscall.SIGTERM, sys.SIGUSR1)
 	for {
 		sig := <-sigCh
 
@@ -108,7 +109,7 @@ func runWebServer() {
 				return
 			}
 			log.Println("Sub server restarted successfully.")
-		case syscall.SIGUSR1:
+		case sys.SIGUSR1:
 			logger.Info("Received USR1 signal, restarting xray-core...")
 			err := server.RestartXray()
 			if err != nil {

util/sys/sys_darwin.go

@@ -7,11 +7,14 @@ import (
 	"encoding/binary"
 	"fmt"
 	"sync"
+	"syscall"
 
 	"github.com/shirou/gopsutil/v4/net"
 	"golang.org/x/sys/unix"
 )
 
+var SIGUSR1 = syscall.SIGUSR1
+
 func GetTCPCount() (int, error) {
 	stats, err := net.Connections("tcp")
 	if err != nil {

util/sys/sys_linux.go

@@ -12,8 +12,11 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"syscall"
 )
 
+var SIGUSR1 = syscall.SIGUSR1
+
 func getLinesNum(filename string) (int, error) {
 	file, err := os.Open(filename)
 	if err != nil {

util/sys/sys_windows.go

@@ -12,6 +12,8 @@ import (
 	"github.com/shirou/gopsutil/v4/net"
 )
 
+var SIGUSR1 = syscall.Signal(0)
+
 // GetConnectionCount returns the number of active connections for the specified protocol ("tcp" or "udp").
 func GetConnectionCount(proto string) (int, error) {
 	if proto != "tcp" && proto != "udp" {