first commit

.gitignore

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+*.log
+*.exe
+log.txt

README.md

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+## Http 代理
+
+### 启动命令
+
+```cmd
+# -p 端口, 默认 7080
+httpproxy -p 7080
+```

go.mod

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+module njyunzhi.com/httpproxy
+
+go 1.17
+
+require github.com/elazarl/goproxy v0.0.0-20220417044921-416226498f94 // indirect

go.sum

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+github.com/elazarl/goproxy v0.0.0-20220417044921-416226498f94 h1:VIy7cdK7ufs7ctpTFkXJHm1uP3dJSnCGSPysEICB1so=
+github.com/elazarl/goproxy v0.0.0-20220417044921-416226498f94/go.mod h1:Ro8st/ElPeALwNFlcTpWmkr6IoMFfkjXAvTHpevnDsM=
+github.com/elazarl/goproxy/ext v0.0.0-20190711103511-473e67f1d7d2/go.mod h1:gNh8nYJoAm43RfaxurUnxr+N1PwuFV3ZMl/efxlIlY8=
+github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4/go.mod h1:qgYeAmZ5ZIpBWTGllZSQnw97Dj+woV0toclVaRGI8pc=

main.go

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+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/elazarl/goproxy"
+)
+
+var f *os.File
+
+type Logger struct{}
+
+func (l *Logger) Printf(format string, v ...interface{}) {
+	log.Printf(format, v...)
+}
+
+func initLog() {
+	var err error
+	f, err = os.OpenFile("log.txt", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	log.SetOutput(f)
+}
+
+func main() {
+	initLog()
+	defer func() {
+		if f != nil {
+			f.Close()
+		}
+	}()
+
+	var port = flag.String("p", "7080", "代理端口")
+	flag.Parse()
+	log.Println(fmt.Sprintf("开始监听 %s:%s", "127.0.0.1", *port))
+
+	proxy := goproxy.NewProxyHttpServer()
+	proxy.Logger = new(Logger)
+
+	// proxy.OnRequest(goproxy.ReqHostMatches(regexp.MustCompile(".*:443$"))).DoFunc(func(r *http.Request, ctx *goproxy.ProxyCtx) (*http.Request, *http.Response) {
+	// 	log.Println("==========================")
+	// 	log.Println(fmt.Sprintf("==========[%s] %s", r.Method, r.RequestURI))
+
+	// 	return r, nil
+	// })
+
+	proxy.Verbose = true
+	log.Fatal(http.ListenAndServe(":"+*port, proxy))
+}