send packets to server to emulate user operation

189cm.go

package main

import (
	"bytes"
	"compress/gzip"
	"fmt"
	"io"
	"math/rand"
	"net/http"
	"net/url"
	"os"
	"strconv"
	"time"
)

const kUrl string = "http://we.189.cm/huafei/help.php"

var letters = []rune("0123456789abcdef")

func randSeq(n int) string {
	b := make([]rune, n)
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b)
}

func sendData() {
	data := url.Values{}
	data.Set("targetid", "0851414cfe119171e8c0f977bca73716")
	rand.Seed(time.Now().UnixNano())
	cookie := "qhf_userid=" + randSeq(32)

	client := &http.Client{}
	req, err := http.NewRequest("POST", kUrl, bytes.NewBufferString(data.Encode()))
	if err != nil {
		fmt.Println("http.NewRequest", err.Error())
		return
	}

	req.Header.Set("Host", "we.189.cm")
	req.Header.Set("Connection", "keep-alive")
	req.Header.Set("Content-Length", strconv.Itoa(len(data.Encode())))
	req.Header.Set("Accept", "application/json, text/javascript, */*; q=0.01")
	req.Header.Set("Origin", "http://we.189.cm")
	req.Header.Set("X-Requested-With", "XMLHttpRequest")
	req.Header.Set("User-Agent", "Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B329 MicroMessenger/5.0.1")
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8")
	req.Header.Set("Referer", "http://we.189.cm/huafei/index.php?target=0851414cfe119171e8c0f977bca73716&isappinstalled=0")
	req.Header.Set("Accept-Encoding", "gzip,deflate")
	req.Header.Set("Accept-Language", "en-US,en;q=0.8")
	req.Header.Set("Cookie", cookie)

	res, err := client.Do(req)
	if err != nil {
		fmt.Println("client.Do", err.Error())
		return
	}
	defer res.Body.Close()

	reader := res.Body
	if res.Header.Get("Content-Encoding") == "gzip" {
		reader, err = gzip.NewReader(res.Body)
		if err != nil {
			fmt.Println("Read response", err.Error())
		} else {
			defer reader.Close()
		}
	}
	io.Copy(os.Stdout, reader)

	time.Sleep(time.Duration(rand.Intn(2)+1) * time.Second)
}

func main() {
	for {
		sendData()
	}
	return
}