80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
package helpers
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import (
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"net"
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"github.com/goravel/framework/contracts/http"
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"github.com/goravel/framework/support/str"
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)
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// GetRealIP 获取客户端真实IP地址
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// 优先从以下HTTP头获取（按顺序）：
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// 1. CF-Connecting-IP (Cloudflare)
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// 2. True-Client-IP
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// 3. X-Real-IP
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// 4. X-Forwarded-For (取第一个IP)
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// 5. RemoteAddr
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func GetRealIP(ctx http.Context) string {
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// 1. Cloudflare
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if ip := ctx.Request().Header("CF-Connecting-IP", ""); ip != "" {
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if parsedIP := parseIP(ip); parsedIP != "" {
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return parsedIP
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}
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}
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// 2. True-Client-IP
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if ip := ctx.Request().Header("True-Client-IP", ""); ip != "" {
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if parsedIP := parseIP(ip); parsedIP != "" {
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return parsedIP
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}
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}
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// 3. X-Real-IP
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if ip := ctx.Request().Header("X-Real-IP", ""); ip != "" {
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if parsedIP := parseIP(ip); parsedIP != "" {
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return parsedIP
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}
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}
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// 4. X-Forwarded-For (可能包含多个IP，取第一个)
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if forwardedFor := ctx.Request().Header("X-Forwarded-For", ""); !str.Of(forwardedFor).IsEmpty() {
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ips := str.Of(forwardedFor).Split(",")
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if len(ips) > 0 {
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ip := str.Of(ips[0]).Trim().String()
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if parsedIP := parseIP(ip); !str.Of(parsedIP).IsEmpty() {
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return parsedIP
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}
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}
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}
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// 5. RemoteAddr
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remoteAddr := ctx.Request().Ip()
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if parsedIP := parseIP(remoteAddr); parsedIP != "" {
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return parsedIP
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}
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return remoteAddr
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}
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// parseIP 解析并验证IP地址
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func parseIP(ip string) string {
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ip = str.Of(ip).Trim().String()
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if str.Of(ip).IsEmpty() {
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return ""
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}
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// 如果包含端口，去掉端口
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if host, _, err := net.SplitHostPort(ip); err == nil {
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ip = host
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}
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// 验证是否为有效IP
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parsedIP := net.ParseIP(ip)
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if parsedIP == nil {
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return ""
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}
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return ip
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}
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