ginuerzh
27 lines
413 B
Go
27 lines
413 B
Go
package http
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import (
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"net"
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"net/http"
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"strings"
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)
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func GetClientIP(req *http.Request) net.IP {
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if req == nil {
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return nil
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}
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// cloudflare CDN
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sip := req.Header.Get("CF-Connecting-IP")
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if sip == "" {
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ss := strings.Split(req.Header.Get("X-Forwarded-For"), ",")
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if len(ss) > 0 && ss[0] != "" {
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sip = ss[0]
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}
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}
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if sip == "" {
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sip = req.Header.Get("X-Real-Ip")
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}
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return net.ParseIP(sip)
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}
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