https://github.com/sebest/xff

A Golang Middleware to handle X-Forwarded-For Header
https://github.com/sebest/xff

Last synced: 3 months ago
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A Golang Middleware to handle X-Forwarded-For Header

• Host: GitHub
• URL: https://github.com/sebest/xff
• Owner: sebest
• License: mit
• Created: 2014-12-22T10:29:05.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2022-01-18T20:54:49.000Z (almost 3 years ago)
• Last Synced: 2024-06-18T13:49:30.617Z (5 months ago)
• Language: Go
• Size: 13.7 KB
• Stars: 98
• Watchers: 3
• Forks: 25
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-go - xff - A Golang Middleware to handle X-Forwarded-For Header - ★ 68 (Web Frameworks)
• awesome-go-extra - xff - Forwarded-For Header|91|23|8|2014-12-22T10:29:05Z|2022-01-18T20:54:49Z| (Web Frameworks / Fail injection)

README

        
# X-Forwarded-For middleware fo Go [![godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/sebest/xff) [![Build Status](https://travis-ci.org/sebest/xff.svg?branch=master)](https://travis-ci.org/sebest/xff)

Package `xff` is a `net/http` middleware/handler to parse [Forwarded HTTP Extension](http://tools.ietf.org/html/rfc7239) in Golang.

## Example usage

Install `xff`:

    go get github.com/sebest/xff

Edit `server.go`:

```go

package main

import (

  "net/http"

  "github.com/sebest/xff"

)

func main() {

  handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

    w.Write([]byte("hello from " + r.RemoteAddr + "\n"))

  })

  xffmw, _ := xff.Default()

  http.ListenAndServe(":8080", xffmw.Handler(handler))

}

```

Then run your server:

    go run server.go

The server now runs on `localhost:8080`:

    $ curl -D - -H 'X-Forwarded-For: 42.42.42.42' http://localhost:8080/

    HTTP/1.1 200 OK

    Date: Fri, 20 Feb 2015 20:03:02 GMT

    Content-Length: 29

    Content-Type: text/plain; charset=utf-8

    hello from 42.42.42.42:52661