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a minimalist http/https proxy library for golang

License: MIT License

Go 100.00%

reverseproxy http https go

reverseproxy's Introduction

Introduction

A minimalist proxy library for go, inspired by net/http/httputil and add support for HTTPS using HTTP Tunnel

Support cancels an in-flight request by closing it's connection

Installation

go get github.com/cssivision/reverseproxy

Usage

A simple proxy

package main

import (
    "net/http"
    "net/url"
    "github.com/cssivision/reverseproxy"
)

func main() {
    http.ListenAndServe(":8080", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        path, err := url.Parse("https://github.com")
        if err != nil {
            panic(err)
            return
        }
        proxy := reverseproxy.NewReverseProxy(path)
        proxy.ServeHTTP(w, r)
    }))
}

Use as a proxy server

To use proxy server, you should set browser to use the proxy server as an HTTP proxy.

package main

import (
    "net/http"
    "net/url"
    "github.com/cssivision/reverseproxy"
)

func main() {
    http.ListenAndServe(":8080", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        path, err := url.Parse("http://" + r.Host)
        if err != nil {
            panic(err)
            return
        }

        proxy := reverseproxy.NewReverseProxy(path)
        proxy.ServeHTTP(w, r)

        // Specific for HTTP and HTTPS
        // if r.Method == "CONNECT" {
        //     proxy.ProxyHTTPS(w, r)
        // } else {
        //     proxy.ProxyHTTP(w, r)
        // }
    }))
}

reverseproxy's People

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reverseproxy's Issues

multipart form

this doesnt work with multipart form
you can test to forward to
http://www.md5online.org/md5-encrypt.html

code:

package main

import (
    "net/http"
    "net/url"
    "github.com/cssivision/reverseproxy"
)

func main() {
    http.ListenAndServe(":9595", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        path, err := url.Parse("http://www.md5online.org")
        if err != nil {
            panic(err)
            return
        }
        proxy := reverseproxy.NewReverseProxy(path)
        proxy.ServeHTTP(w, r)
    }))
}

it should show md5 for input value, but we go "bad format".
The same on other servers.

X-Forwarded-For generated header is incorrect if previous values exist

If the request that we have to proxy already has an IP in the X-Forwarded-For header the concatenation is wrong

Example instead of

1.1.1.1, 8.8.8.8

It forwards

1.1.1.18.8.8.8

Example:

https://play.golang.org/p/lVQNcaZ_kmy

change response content

i want to change some part on my html via this proxy

How about websockets?

Hi! Seems that it's OK for a small customisable lib out here, but what about websockets? Would they being redirected the same way? Thank you!

http: proxy error: context canceled

There will be a lot of concurrency when it reaches 1000 http: proxy error: context canceled

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