44 lines
980 B
Markdown
44 lines
980 B
Markdown
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# X-Forwarded-For middleware fo Go [](https://godoc.org/github.com/sebest/xff)
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Package `xff` is a `net/http` middleware/handler to parse [Forwarded HTTP Extension](http://tools.ietf.org/html/rfc7239) in Golang.
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## Example usage
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Install `xff`:
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go get github.com/sebest/xff
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Edit `server.go`:
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```go
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package main
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import (
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"net/http"
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"github.com/sebest/xff"
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)
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func main() {
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handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write([]byte("hello from " + r.RemoteAddr + "\n"))
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})
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http.ListenAndServe(":8080", xff.Handler(handler))
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}
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```
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Then run your server:
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go run server.go
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The server now runs on `localhost:8080`:
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$ curl -D - -H 'X-Forwarded-For: 42.42.42.42' http://localhost:8080/
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HTTP/1.1 200 OK
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Date: Fri, 20 Feb 2015 20:03:02 GMT
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Content-Length: 29
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Content-Type: text/plain; charset=utf-8
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hello from 42.42.42.42:52661
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