问,如何获取客户端ip ?

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

@polaris 非常感谢!