fix: Compatible with Windows

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>

README.md

@@ -43,7 +43,6 @@ Use token
 
 ### mTLS
 You can enable mTLS by specifying device CA storage (valid file) in config file or from CLI (variable ssl-cacert).
-Appending to CA storage is possible on-the-fly, you can reload CA certs by sendig SIGUSR1 signal.
 Device(s) without valid CA in storage will be disconnected in TLS handshake.
 
 ## Running as a Linux service

README_ZH.md

@@ -43,7 +43,7 @@
 
 ### SSL 双向认证(mTLS)
 您可以在配置文件中指定设备 CA 存储(有效文件)或在 CLI 中指定设备 CA 存储(参数 ssl-cacert) 来启用 mTLS。
-您可以通过发送 SIGUSR1 信号重新加载 CA 证书。存储中没有有效 CA 的设备将在 TLS 握手中断开连接。
+存储中没有有效 CA 的设备将在 TLS 握手中断开连接。
 
 ## 作为Linux服务运行
 移动rttys可执行程序到/usr/local/bin/

main.go

@@ -2,11 +2,8 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
-	"os/signal"
 	"runtime"
-	"syscall"
 
 	"github.com/rs/zerolog/log"
 	"github.com/urfave/cli/v2"
@@ -20,8 +17,6 @@ func runRttys(c *cli.Context) {
 	rlog.SetPath(c.String("log"))
 
 	cfg := config.Parse(c)
-	sigs := make(chan os.Signal, 1)
-	signal.Notify(sigs, syscall.SIGUSR1)
 
 	if cfg.HTTPUsername == "" {
 		fmt.Println("You must configure the http username by commandline or config file")
@@ -51,26 +46,6 @@ func runRttys(c *cli.Context) {
 	listenDeviceWeb(br)
 	httpStart(br)
 
-	go func() {
-		for {
-			s := <-sigs
-			switch s {
-			case syscall.SIGUSR1:
-				if br.devCertPool != nil {
-					log.Info().Msg("Reload certs for mTLS")
-					caCert, err := ioutil.ReadFile(cfg.SslCacert)
-					if err != nil {
-						log.Info().Msgf("mTLS update faled: %s", err.Error())
-					} else {
-						br.devCertPool.AppendCertsFromPEM(caCert)
-					}
-				} else {
-					log.Warn().Msg("Reload certs failed: mTLS not used")
-				}
-			}
-		}
-	}()
-
 	select {}
 }