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feat(): add CF-Connecting-IP #908

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merged 5 commits into from
Sep 18, 2024
Merged

feat(): add CF-Connecting-IP #908

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288bb4f
feat(): add CF-Connection-IP
n33pm Apr 9, 2024
3433509
feat(): custom real ip header
n33pm Apr 9, 2024
cb43924
fix(): typo
n33pm Apr 9, 2024
da49574
refactor(): remove cf-connecting-ip from default headers
n33pm Apr 9, 2024
277d4a5
refactor(): back to unexported default headers
n33pm Apr 9, 2024
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7 changes: 5 additions & 2 deletions middleware/realip.go
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Original file line number Diff line number Diff line change
Expand Up @@ -9,12 +9,13 @@ import (
"strings"
)

var cfConnectionIP = http.CanonicalHeaderKey("CF-Connecting-IP")
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var trueClientIP = http.CanonicalHeaderKey("True-Client-IP")
var xForwardedFor = http.CanonicalHeaderKey("X-Forwarded-For")
var xRealIP = http.CanonicalHeaderKey("X-Real-IP")

// RealIP is a middleware that sets a http.Request's RemoteAddr to the results
// of parsing either the True-Client-IP, X-Real-IP or the X-Forwarded-For headers
// of parsing either the CF-Connecting-IP, True-Client-IP, X-Real-IP or the X-Forwarded-For headers
// (in that order).
//
// This middleware should be inserted fairly early in the middleware stack to
Expand Down Expand Up @@ -42,7 +43,9 @@ func RealIP(h http.Handler) http.Handler {
func realIP(r *http.Request) string {
var ip string

if tcip := r.Header.Get(trueClientIP); tcip != "" {
if cfcip := r.Header.Get(cfConnectionIP); cfcip != "" {
ip = cfcip
} else if tcip := r.Header.Get(trueClientIP); tcip != "" {
ip = tcip
} else if xrip := r.Header.Get(xRealIP); xrip != "" {
ip = xrip
Expand Down