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realip

Test Status Coverage Status MIT License GoDoc

The realip detects client real ip in Go's HTTP middleware layer.

Synopsis

_, ipnet, _ := net.ParseCIDR("192.168.0.0/16")
var middleware func(http.Handler) http.Handler = realip.MustMiddleware(&realip.Config{
    RealIPFrom:      []*net.IPNet{ipnet},
    RealIPHeader:    realip.HeaderXForwardedFor,
    RealIPRecursive: true,
})
var handler http.HandlerFunc = func(w http.ResponseWriter, req *http.Request) {
    fmt.Fprintf(w, req.Header.Get("X-Real-IP"))
})
handler = middleware(handler)

Description

The realip package implements detecting client real IP mechanisms from request headers in Go's HTTP middleware layer.

This realizes the similar function as Nginx's ngx_http_realip_module in the layer inside Go. Therefore, the setting property names and behaviors are also close to ngx_http_realip_module.

The realip provides Go's HTTP Middleware. It detects the client's real ip from the request and sets it in the specified request header (Default: X-Real-IP).

Installation

% go get github.com/natureglobal/realip

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