31 lines
561 B
Go
31 lines
561 B
Go
package tools
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import (
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"net"
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"net/http"
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"net/textproto"
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"strings"
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)
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// RemoteIP -
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func RemoteIP(req *http.Request) string {
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ips := make([]string, 0)
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if headerAddr := req.Header.Get(textproto.CanonicalMIMEHeaderKey("X-Forwarded-For")); len(headerAddr) > 0 {
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ips = strings.Split(headerAddr, ",")
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}
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if len(ips) > 0 && len(ips[0]) > 0 {
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rip, _, err := net.SplitHostPort(ips[0])
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if err != nil {
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return ips[0]
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}
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return rip
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}
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ip := req.RemoteAddr
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if rip, _, err := net.SplitHostPort(ip); err == nil {
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return rip
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} else {
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return ip
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}
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}
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