使用Go语言+goproxy库编写的http代理服务器+图片cache保存脚本 第一版完成

使用Go语言+goproxy库编写的http代理服务器+图片cache保存 第一版完成

用法：
1、安装Go 1.5.x
2、命令行设置环境变量GOSRC（Windows下设置到“我的电脑”里面）
3、安装goproxy库：go get github.com/elazarl/goproxy
4、运行脚本：go run go-httproxy-imagedumper.go
5、可以用go build创建exe版本

package main

import (
	"crypto/sha1"
	"errors"
	"flag"
	"fmt"
	"io"
	"log"
	"net"
	"net/http"
	// "net/http/httputil"
	"os"
	"os/signal"
	"path"
	"regexp"
	"sync"
	// "time"

	"github.com/elazarl/goproxy"
	// "github.com/elazarl/goproxy/transport"
)


//--------------------------------------------------------------------------- Code Copied from examples/goproxy-httpdump
type FileStream struct {
	path string
	f    *os.File
}

func NewFileStream(path string) *FileStream {
	return &FileStream{path, nil}
}

func (fs *FileStream) Write(b []byte) (nr int, err error) {
	if fs.f == nil {
		fs.f, err = os.Create(fs.path)
		if err != nil {
			return 0, err
		}
	}
	return fs.f.Write(b)
}

func (fs *FileStream) Close() error {
	fmt.Println("Close", fs.path)
	if fs.f == nil {
		return errors.New("FileStream was never written into")
	}
	return fs.f.Close()
}

//--------------------------------------------------------------------------- Code Copied