feat: 支持CTG线路检测，优化系统适配性添加占位符

README.md

@@ -10,12 +10,11 @@
 
 ## 功能
 
-- [x] 检测回程显示IPV4地址时的线路(使用1500字节的包)，不显示IP地址时显示ASN检测不到，原版[backtrace](https://github.com/zhanghanyun/backtrace)也支持
+- [x] 检测回程显示IPV4地址时的线路(使用1500字节的包)，不显示IP地址时显示ASN检测不到
-- [x] 支持对```4837```、```9929```和```163```线路的判断，原版[backtrace](https://github.com/zhanghanyun/backtrace)也支持
+- [x] 支持对```9929```、```4837```和```163```线路的判断
-- [x] 支持对```CN2GT```和```CN2GIA```线路的判断，原版[backtrace](https://github.com/zhanghanyun/backtrace)不支持，原版全部识别为```CN2```了
+- [x] 支持对```CTGNET```、```CN2GIA```和```CN2GT```线路的判断
-- [x] 支持对```CMIN2```和```CMI```线路的判断，原版[backtrace](https://github.com/zhanghanyun/backtrace)也支持，但所支持的IP区间不一样，本项目更多
+- [x] 支持对```CMIN2```和```CMI```线路的判断
-- [x] 支持对整个回程路由进行线路分析，与原版[backtrace](https://github.com/zhanghanyun/backtrace)仅进行一次判断不同
+- [x] 支持对整个回程路由进行线路分析，一个目标IP可能会分析出多种线路
-- [x] 修复原版[backtrace](https://github.com/zhanghanyun/backtrace)对IPV4地址信息获取时json解析失败依然打印信息的问题，本项目忽略错误继续执行路由线路查询
 - [x] 增加对全平台的编译支持，原版[backtrace](https://github.com/zhanghanyun/backtrace)仅支持linux平台的amd64和arm64架构
 
 ## TODO

bk/asn.go

@@ -29,6 +29,7 @@ var (
 	}
 	m = map[string]string{
 		// [] 前的字符串个数，中文占2个字符串
+		"AS23764": "电信CTGNET [精品线路]",
 		"AS4809a": "电信CN2GIA [精品线路]",
 		"AS4809b": "电信CN2GT  [优质线路]",
 		"AS4134":  "电信163    [普通线路]",
@@ -109,6 +110,10 @@ func trace(ch chan Result, i int) {
 				if !strings.Contains(tempText, asnDescription) {
 					tempText += DarkGreen(asnDescription) + " "
 				}
+			case "AS23764":
+				if !strings.Contains(tempText, asnDescription) {
+					tempText += DarkGreen(asnDescription) + " "
+				}
 			case "AS4809b":
 				if !strings.Contains(tempText, asnDescription) {
 					tempText += Green(asnDescription) + " "
@@ -149,6 +154,8 @@ func ipAsn(ip string) string {
 		return "AS58807"
 	case strings.HasPrefix(ip, "223.118") || strings.HasPrefix(ip, "223.119") || strings.HasPrefix(ip, "223.120") || strings.HasPrefix(ip, "223.121"):
 		return "AS58453"
+	case strings.HasPrefix(ip, "69.194") || strings.HasPrefix(ip, "203.22"):
+		return "AS23764"
 	default:
 		return ""
 	}

bk/listen_freebsd.go

@@ -1,53 +0,0 @@
-package backtrace
-
-import (
-	"net"
-	"syscall"
-
-	. "github.com/oneclickvirt/defaultset"
-)
-
-func (t *Tracer) listen(network string, laddr *net.IPAddr) (*net.IPConn, error) {
-	if EnableLoger {
-		InitLogger()
-		defer Logger.Sync()
-		conn, err := net.ListenIP(network, laddr)
-		if err != nil {
-			Logger.Info(err.Error())
-			return nil, err
-		}
-		raw, err := conn.SyscallConn()
-		if err != nil {
-			Logger.Info(err.Error())
-			conn.Close()
-			return nil, err
-		}
-		_ = raw.Control(func(fd uintptr) {
-			err = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_HDRINCL, 1)
-		})
-		if err != nil {
-			Logger.Info(err.Error())
-			conn.Close()
-			return nil, err
-		}
-		return conn, nil
-	} else {
-		conn, err := net.ListenIP(network, laddr)
-		if err != nil {
-			return nil, err
-		}
-		raw, err := conn.SyscallConn()
-		if err != nil {
-			conn.Close()
-			return nil, err
-		}
-		_ = raw.Control(func(fd uintptr) {
-			err = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_HDRINCL, 1)
-		})
-		if err != nil {
-			conn.Close()
-			return nil, err
-		}
-		return conn, nil
-	}
-}

bk/listen_linux.go

@@ -1,3 +1,6 @@
+//go:build linux || freebsd || openbsd || darwin
+// +build linux freebsd openbsd darwin
+
 package backtrace
 
 import (

bk/listen_openbsd.go

@@ -1,53 +0,0 @@
-package backtrace
-
-import (
-	"net"
-	"syscall"
-
-	. "github.com/oneclickvirt/defaultset"
-)
-
-func (t *Tracer) listen(network string, laddr *net.IPAddr) (*net.IPConn, error) {
-	if EnableLoger {
-		InitLogger()
-		defer Logger.Sync()
-		conn, err := net.ListenIP(network, laddr)
-		if err != nil {
-			Logger.Info(err.Error())
-			return nil, err
-		}
-		raw, err := conn.SyscallConn()
-		if err != nil {
-			Logger.Info(err.Error())
-			conn.Close()
-			return nil, err
-		}
-		_ = raw.Control(func(fd uintptr) {
-			err = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_HDRINCL, 1)
-		})
-		if err != nil {
-			Logger.Info(err.Error())
-			conn.Close()
-			return nil, err
-		}
-		return conn, nil
-	} else {
-		conn, err := net.ListenIP(network, laddr)
-		if err != nil {
-			return nil, err
-		}
-		raw, err := conn.SyscallConn()
-		if err != nil {
-			conn.Close()
-			return nil, err
-		}
-		_ = raw.Control(func(fd uintptr) {
-			err = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_HDRINCL, 1)
-		})
-		if err != nil {
-			conn.Close()
-			return nil, err
-		}
-		return conn, nil
-	}
-}

bk/listen_unknown.go

@@ -1,3 +1,6 @@
+//go:build !linux && !freebsd && !openbsd && !darwin && !windows
+// +build !linux,!freebsd,!openbsd,!darwin,!windows
+
 package backtrace
 
 import (