fix: 修复部分纯v6环境无法获取ipv6

monitoring/unit/ip.go

@@ -1,14 +1,55 @@
 package monitoring
 
 import (
+	"context"
 	"io"
+	"log"
+	"net"
 	"net/http"
 	"regexp"
+	"time"
 )
 
 var userAgent = "curl/8.0.1"
 
+func ipv4Transport() *http.Transport {
+	return &http.Transport{
+		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+			d := net.Dialer{
+				Timeout:   15 * time.Second,
+				KeepAlive: 30 * time.Second,
+			}
+			return d.DialContext(ctx, "tcp4", addr) // 锁v4防止出现问题
+		},
+		MaxIdleConns:          10,
+		IdleConnTimeout:       30 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+}
+
+func ipv6Transport() *http.Transport {
+	return &http.Transport{
+		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+			d := net.Dialer{
+				Timeout:   15 * time.Second,
+				KeepAlive: 30 * time.Second,
+			}
+			return d.DialContext(ctx, "tcp6", addr) // 锁v6防止出现问题
+		},
+		MaxIdleConns:          10,
+		IdleConnTimeout:       30 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+}
+
 func GetIPv4Address() (string, error) {
+	client := &http.Client{
+		Transport: ipv4Transport(),
+		Timeout:   15 * time.Second,
+	}
+
 	webAPIs := []string{
 		"https://www.visa.cn/cdn-cgi/trace",
 		"https://www.qualcomm.cn/cdn-cgi/trace",
@@ -16,7 +57,8 @@ func GetIPv4Address() (string, error) {
 		"https://edge-ip.html.zone/geo",
 		"https://vercel-ip.html.zone/geo",
 		"http://ipv4.ip.sb",
-		"https://api.ipify.org?format=json"}
+		"https://api.ipify.org?format=json",
+	}
 
 	for _, api := range webAPIs {
 		// get ipv4
@@ -25,19 +67,19 @@ func GetIPv4Address() (string, error) {
 			continue
 		}
 		req.Header.Set("User-Agent", userAgent)
-		resp, err := http.DefaultClient.Do(req)
+		resp, err := client.Do(req)
 		if err != nil {
 			continue
 		}
-		defer resp.Body.Close()
 		body, err := io.ReadAll(resp.Body)
+		_ = resp.Body.Close() // 获取后立即关闭防止堵塞
 		if err != nil {
 			continue
 		}
-		// 使用正则表达式从响应体中提取IPv4地址
 		re := regexp.MustCompile(`\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}`)
 		ipv4 := re.FindString(string(body))
 		if ipv4 != "" {
+			log.Printf("Get IPV4 Success: %s", ipv4)
 			return ipv4, nil
 		}
 	}
@@ -45,11 +87,17 @@ func GetIPv4Address() (string, error) {
 }
 
 func GetIPv6Address() (string, error) {
+	client := &http.Client{
+		Transport: ipv6Transport(), // 对于v6请求只使用v6
+		Timeout:   15 * time.Second,
+	}
+
 	webAPIs := []string{
 		"https://v6.ip.zxinc.org/info.php?type=json",
 		"https://api6.ipify.org?format=json",
 		"https://ipv6.icanhazip.com",
-		"https://api-ipv6.ip.sb/geoip"}
+		"https://api-ipv6.ip.sb/geoip",
+	}
 
 	for _, api := range webAPIs {
 		// get ipv6
@@ -58,19 +106,21 @@ func GetIPv6Address() (string, error) {
 			continue
 		}
 		req.Header.Set("User-Agent", userAgent)
-		resp, err := http.DefaultClient.Do(req)
+		resp, err := client.Do(req)
 		if err != nil {
 			continue
 		}
-		defer resp.Body.Close()
 		body, err := io.ReadAll(resp.Body)
+		_ = resp.Body.Close() // 获取后立即关闭防止堵塞
 		if err != nil {
 			continue
 		}
+
 		// 使用正则表达式从响应体中提取IPv6地址
 		re := regexp.MustCompile(`(([0-9A-Fa-f]{1,4}:){7})([0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,6}:)(([0-9A-Fa-f]{1,4}:){0,4})([0-9A-Fa-f]{1,4})`)
 		ipv6 := re.FindString(string(body))
 		if ipv6 != "" {
+			log.Printf("Get IPV6 Success:  %s", ipv6)
 			return ipv6, nil
 		}
 	}
@@ -80,10 +130,12 @@ func GetIPv6Address() (string, error) {
 func GetIPAddress() (ipv4, ipv6 string, err error) {
 	ipv4, err = GetIPv4Address()
 	if err != nil {
+		log.Printf("Get IPV4 Error: %v", err)
 		ipv4 = ""
 	}
 	ipv6, err = GetIPv6Address()
 	if err != nil {
+		log.Printf("Get IPV6 Error: %v", err)
 		ipv6 = ""
 	}