proxy.go

package main
 
import (
  "github.com/elazarl/goproxy"
  "log"
  "net/http"
  "regexp"
)
var players = map[string] string {
  "youku_loader": "http://chat.saas.bdfzer.com/uploads/20131101171855-loader.swf",
  "youku_player": "https://haoutil.googlecode.com/svn/trunk/player/testmod/player.swf",
  "ku6":          "https://haoutil.googlecode.com/svn/trunk/player/ku6.swf",
  "ku6_out":      "https://haoutil.googlecode.com/svn/trunk/player/ku6_out.swf",
  "iqiyi":        "https://haoutil.googlecode.com/svn/trunk/player/testmod/iqiyi.swf",
  "iqiyi5":       "https://haoutil.googlecode.com/svn/trunk/player/testmod/iqiyi5.swf",
  "iqiyi_out":    "https://haoutil.googlecode.com/svn/trunk/player/testmod/iqiyi_out.swf",
  "tudou":        "https://haoutil.googlecode.com/svn/trunk/player/testmod/tudou.swf",
  "tudou_olc":    "https://haoutil.googlecode.com/svn/trunk/player/testmod/olc_8.swf",
  "tudou_sp":     "https://haoutil.googlecode.com/svn/trunk/player/testmod/sp.swf",
  "letv":         "https://haoutil.googlecode.com/svn/trunk/player/testmod/letv.swf",
}

type Rule struct {
  Match *regexp.Regexp
  Replace string
}

func NewRule(match, replace string) *Rule {
  return &Rule{regexp.MustCompile(match), replace, }
}

func (r *Rule)FindRule(url string) (matched bool, target string) {
  matched = r.Match.MatchString(url)
  target  = r.Match.ReplaceAllString(url,r.Replace)
  return
}
func main() {
  // log.Println(regexp.MustCompile(`^\d(\w+) (\w+)?`).ReplaceAllString("3yasdfasdf ","-$1  +  $2"))
  rules := []Rule{
    *NewRule(
      `^static\.youku\.com(\/v[\d\.]+)?\/v\/swf\/loader\.swf`,
      players["youku_loader"],
    ),
    *NewRule(
      `^static\.youku\.com(\/v[\d\.]+)?\/v\/swf\/q?player[^\.]*\.swf(\?.*)?`,
      players["youku_player"] + "$2",
    ),
    *NewRule(
      `^player\.youku\.com\/player\.php\/.*sid\/([\w=]+).*(\/v)?\.swf.*`,
      players["youku_player"] + "?showAd=0&VideoIDS=$1",
    ),
  }
  proxy := goproxy.NewProxyHttpServer()
  proxy.OnRequest().DoFunc(
    func(r *http.Request, ctx *goproxy.ProxyCtx) (*http.Request, *http.Response) {
      url := r.URL.Host+r.URL.Path
      for _, v := range rules {
        matched, target := v.FindRule(url)
        if matched {
          log.Println(matched, target)
          resp, _ := http.Get(target)
          return r, resp
        }
      }
      return r, nil
    })
    log.Fatalln(http.ListenAndServe(":8080", proxy))
  }

这是一个go的代理服务器，正在研究。reddit不知道什么东西