上图代码,下图结果
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polaris
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```go
const (
XForwardedFor = "X-Forwarded-For"
XRealIP = "X-Real-IP"
)
// RemoteIp 返回远程客户端的 IP，如 192.168.1.1
func RemoteIp(req *http.Request) string {
remoteAddr := req.RemoteAddr
if ip := req.Header.Get(XRealIP); ip != "" {
remoteAddr = ip
} else if ip = req.Header.Get(XForwardedFor); ip != "" {
remoteAddr = ip
} else {
remoteAddr, _, _ = net.SplitHostPort(remoteAddr)
}
if remoteAddr == "::1" {
remoteAddr = "127.0.0.1"
}
return remoteAddr
}
```
供参考
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