diff options
Diffstat (limited to 'service/http/handler.go')
| -rw-r--r-- | service/http/handler.go | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/service/http/handler.go b/service/http/handler.go index 3c667035..ab7c382b 100644 --- a/service/http/handler.go +++ b/service/http/handler.go @@ -175,7 +175,23 @@ func (h *Handler) resolveIP(r *Request) { return } + // The logic here is the following: + // In general case, we only expect X-Real-Ip header. If it exist, we get the IP addres from header and set request Remote address + // But, if there is no X-Real-Ip header, we also trying to check CloudFlare headers + // True-Client-IP is a general CF header in which copied information from X-Real-Ip in CF. + // CF-Connecting-IP is an Enterprise feature and we check it last in order. + // This operations are near O(1) because Headers struct are the map type -> type MIMEHeader map[string][]string if r.Header.Get("X-Real-Ip") != "" { r.RemoteAddr = fetchIP(r.Header.Get("X-Real-Ip")) + return + } + + if r.Header.Get("True-Client-IP") != "" { + r.RemoteAddr = fetchIP(r.Header.Get("True-Client-IP")) + return + } + + if r.Header.Get("CF-Connecting-IP") != "" { + r.RemoteAddr = fetchIP(r.Header.Get("CF-Connecting-IP")) } } |