cycletls-axios
v1.26.1TypeScript
Spoof TLS/JA3 fingerprint in JS with help from Go, add res.data and res.duration
0/weekUpdated 1 years agoGPL3Unpacked: 82.4 MB
Published by Danny-Dasilva
CycleTLS
Accepting Community Support and PR's
!build
If you have a API change or feature request feel free to open an Issue
必须在Linux环境下执行 npm publish，将 dist 目录权限设置为777，否则无法运行！！！
和原版相比，修改了返回值字段名，使返回的 response 字段和 axios 返回的 response 字段保持一致
- 修改 response.body = response.data
- 添加 response.duration
🚀 Features
- High-performance Built-in goroutine pool used for handling asynchronous requests
- Custom header ordering via fhttp
- Proxy support | Socks4, Socks5, Socks5h
- Ja3 Token configuration
Table of contents
=================
* Table of contents
* Installation
* Usage
* QuickStart JS
* Quickstart Golang
* Initializing CycleTLS
* API/Methods
* Request Config
* Response Schema
* Multiple Requests Example
* Local Setup
* QA
* LICENSE
Dependencies
``
node ^v16.0
golang ^v1.20x
Installation
Node Js
`bash`
$ npm install cycletls
Golang
`bash`
$ go get github.com/Danny-Dasilva/CycleTLS/cycletls
Usage
Example CycleTLS Request for Typescript and Javascript
You can run this test in tests/simple.test.ts
`js
const initCycleTLS = require('cycletls');
// Typescript: import initCycleTLS from 'cycletls';
(async () => {
// Initiate CycleTLS
const cycleTLS = await initCycleTLS();
// Send request
const response = await cycleTLS('https://ja3er.com/json', {
body: '',
ja3: '771,4865-4867-4866-49195-49199-52393-52392-49196-49200-49162-49161-49171-49172-51-57-47-53-10,0-23-65281-10-11-35-16-5-51-43-13-45-28-21,29-23-24-25-256-257,0',
userAgent: 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0',
proxy: 'http://username:password@hostname.com:443',
}, 'get');
console.log(response);
// Cleanly exit CycleTLS
cycleTLS.exit();
})();
`
Example CycleTLS Request for Golang
`go
package main
import (
"log"
"github.com/Danny-Dasilva/CycleTLS/cycletls"
)
func main() {
client := cycletls.Init()
response, err := client.Do("https://ja3er.com/json", cycletls.Options{
Body : "",
Ja3: "771,4865-4867-4866-49195-49199-52393-52392-49196-49200-49162-49161-49171-49172-51-57-47-53-10,0-23-65281-10-11-35-16-5-51-43-13-45-28-21,29-23-24-25-256-257,0",
UserAgent: "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0",
}, "GET");
if err != nil {
log.Print("Request Failed: " + err.Error())
}
log.Println(response)
}
`
#### Example using your own custom http.Client
`go
import (
"github.com/Danny-Dasilva/CycleTLS/cycletls"
http "github.com/Danny-Dasilva/fhttp" // note this is a drop-in replacement for net/http
)
func main() {
ja3 := "771,52393-52392-52244-52243-49195-49199-49196-49200-49171-49172-156-157-47-53-10,65281-0-23-35-13-5-18-16-30032-11-10,29-23-24,0"
ua := "Chrome Version 57.0.2987.110 (64-bit) Linux"
cycleClient := &http.Client{
Transport: cycletls.NewTransport(ja3, ua),
}
resp, err := cycleClient.Get("https://tls.peet.ws/")
...
}
`
Creating an instance
In order to create a cycleTLS instance, you can run the following:
#### JavaScript
`js
// The initCycleTLS function spawns a Golang process that handles all requests concurrently via goroutine loops.
const initCycleTLS = require('cycletls');
// import initCycleTLS from 'cycletls';
// Async/Await method
const cycleTLS = await initCycleTLS();
// .then method
initCycleTLS().then((cycleTLS) => {});
`
#### Golang
`go
import (
"github.com/Danny-Dasilva/CycleTLS/cycletls"
)
//The Init function initializes golang channels to process requests. `
client := cycletls.Init()
CycleTLS Alias Methods
The following methods exist in CycleTLS
cycleTLS(url, [config])
cycleTLS.get(url, [config])
cycleTLS.delete(url, [config])
cycleTLS.head(url, [config])
cycleTLS.options(url, [config])
cycleTLS.post(url, [config])
cycleTLS.put(url, config)
cycleTLS.patch(url, [config])
Url is not optional, config is optional
CycleTLS Request Config
`js
{
// URL for the request (required if not specified as an argument)
url: "https://example.com"
// Method for the request ("head" | "get" | "post" | "put" | "delete" | "trace" | "options" | "connect" | "patch")
method: "get" // Default method
// Custom headers to send
headers: { "Authorization": "Bearer someexampletoken" }
// Custom cookies to send
Cookies: [{
"name": "key",
"value": "val",
"path": "/docs",
"domain": "google.com",
"expires": "Mon, 02-Jan-2022 15:04:05 EST"
"maxAge": 90,
"secure": false,
"httpOnly": true,
"sameSite": "Lax"
}],
// Body to send with request (must be a string - cannot pass an object)
body: '',
// JA3 token to send with request
ja3: '771,4865-4867-4866-49195-49199-52393-52392-49196-49200-49162-49161-49171-49172-51-57-47-53-10,0-23-65281-10-11-35-16-5-51-43-13-45-28-21,29-23-24-25-256-257,0',
// User agent for request
userAgent: 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0',
// Proxy to send request through (must be in the same format)
proxy: 'http://username:password@hostname.com:443',
// Amount of seconds before request timeout (default: 7)
timeout: 2,
// Toggle if CycleTLS should follow redirects
disableRedirect: true,
// Custom header order to send with request (This value will overwrite default header order)
headerOrder: ["cache-control", "connection", "host"],
// Toggle if CycleTLS should skip verify certificate (If InsecureSkipVerify is true, TLS accepts any certificate presented by the server and any host name in that certificate.)
insecureSkipVerify: false
// Forces CycleTLS to do a http1 handshake
forceHTTP1: false
}
`
CycleTLS Response Schema
`js
{
// Status code returned from server (Number)
status: 200,
// Body returned from the server (String)
body: "",
// Headers returned from the server (Object)
headers: {
"some": "header",
...
},
// FinalUrl returned from the server (String). This field is useful when redirection is active.
finalUrl: "https://final.url/"
}
`
Multiple Requests Example for Typescript and Javascript
If CycleTLS is being used by in a JavaScript environment, CycleTLS will spawn a Golang process to handle requests. This Golang process handles requests concurrently in a worker pool. Due to this, CycleTLS returns response objects as soon as they are made available
(in other terms, CycleTLS processes requests as they are received, but responses are returned asynchronously so they will NOT be returned in the order requested)
If you are using CycleTLS in JavaScript, it is necessary to exit out of the instance to prevent zombie processes. The example below shows one way to approach cleanly exiting CycleTLS if you need to process multiple requests (note: keep in mind that calling the exit() function will kill any requests in progress). If your workflow requires requests running the entire time the process runs, modules such as exit-hook could serve as an alternative solution to cleanly exiting CycleTLS.
`js
const initCycleTLS = require("cycletls");
// Typescript: import initCycleTLS from 'cycletls';
// Defining custom JA3 token and user agenton multiple requests,
"https://httpbin.org/user-agent": {
ja3: ja3,
userAgent: userAgent,
},
"http://httpbin.org/post": {
body: '{"field":"POST-VAL"}',
method: "POST",
},
"http://httpbin.org/cookies": {
cookies: [
{
name: "example1",
value: "aaaaaaa",
expires: "Mon, 02-Jan-2022 15:04:05 EST",
},
],
},
};
// Promises array of requests
const promises = [];
// Anonymous async function
(async () => {
// Initiate CycleTLS
const cycleTLS = await initCycleTLS();
// Loop through requestDict (Object) defined above
for (const url in requestDict) {
// Fetch configs from requestDict (Object)
const params = requestDict[url];
// Send request (note: no waiting)
const response = cycleTLS(
url, {
body: params.body ?? "", //?? is just setting defaults in this case
ja3: params.ja3 ?? ja3,
userAgent: params.userAgent ?? userAgent,
headers: params.headers,
cookies: params.cookies,
}, params.method ?? "GET");
// console.log the response object
response.then((out) => {
console.log(url, out);
});
// Push request to promise array
promises.push(response);
}
// Wait for all requests to execute successfully
Promise.all(promises).then(() => {
// Cleanly exit CycleTLS one all requests have been received
cycleTLS.exit();
});
})();
`
Multiple Requests Example for Golang
The general expectation for golang packages is to expect the user to implement a worker pool or any other form of goroutine/asynchronous processing. This package includes a built in Queue method that leverages a worker pool/channels for long running asynchronous requests against a set of urls.
`go
package main
import (
"log"
cycletls "github.com/Danny-Dasilva/CycleTLS/cycletls"
)
// Static variables
var (
ja3 = "771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172-156-157-47-53,0-23-65281-10-11-35-16-5-13-18-51-45-43-27-17513,29-23-24,0"
userAgent = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36"
)
// RequestConfig holds the configuration for each request.
type RequestConfig struct {
URL string
Method string
Options cycletls.Options
}
func main() {
client := cycletls.Init(true) // Initialize with worker pool
// Define the requests
requests := []RequestConfig{
{
URL: "http://httpbin.org/delay/4",
Method: "GET",
Options: cycletls.Options{
Ja3: ja3,
UserAgent: userAgent,
},
},
{
URL: "http://httpbin.org/post",
Method: "POST",
Options: cycletls.Options{
Body: {"field":"POST-VAL"},
Ja3: ja3,
UserAgent: userAgent,
},
},
{
URL: "http://httpbin.org/cookies",
Method: "GET",
Options: cycletls.Options{
Ja3: ja3,
UserAgent: userAgent,
Cookies: []cycletls.Cookie{
{
Name: "example1",
Value: "aaaaaaa",
},
},
},
},
}
// Queue the requests
for _, req := range requests {
client.Queue(req.URL, req.Options, req.Method)
}
// Asynchronously read responses as soon as they are available
// They will return as soon as they are processed
// e.g. Delay 3 will be returned last
for i := 0; i < len(requests); i++ {
response := <-client.RespChan
log.Println("Response:", response)
}
// Close the client
client.Close()
}
`
Dev Setup
If you would like to compile CycleTLS on your own, use the following commands:
Set module-aware mode
go env -w GO111MODULE=off
Install golang dependencies
go get github.com/Danny-Dasilva/CycleTLS/cycletls
install npm packages (this command handles the above)
npm install
$3
npm run build
$3
All
npm run build:go
Windows
npm run build:go:windows:amd64
Linux
npm run build:go:linux:amd64
Mac
npm run build:go:mac:arm64
You can view the available compile options within the package.json
Questions
$3
There are two simple ways to interface with cookies
$3
`js`
const initCycleTLS = require("cycletls");
(async () => {
// Initiate cycleTLS
const cycleTLS = await initCycleTLS();
const response = await cycleTLS("https://httpbin.org/cookies", {
cookies: {
cookie1: "value1",
cookie2: "value2",
},
});
console.log(response.body);
/* Expected
{
"cookies": {
"cookie1": "value1",
"cookie2": "value2"
}
}
*/
cycleTLS.exit();
})();
In this simple example you can set the cookie name and value within an object
$3
If you wish to have more fine grained control over cookie parameters you have access to the full underlying Go struct
here are the following values you can set
`ts`
export interface Cookie {
name: string;
value: string;
path?: string;
domain?: string;
expires?: string;
rawExpires?: string;
maxAge?: number;
secure?: boolean;
httpOnly?: boolean;
sameSite?: string;
unparsed?: string;
}
you can use them in a request as follows
`js
const initCycleTLS = require("cycletls");
(async () => {
// Initiate cycleTLS
const cycleTLS = await initCycleTLS();
const complexCookies = [
{
name: "cookie1",
value: "value1",
domain: "httpbin.org",
},
{
name: "cookie2",
value: "value2",
domain: "httpbin.org",
},
];
const response = await cycleTLS("https://httpbin.org/cookies", {
cookies: complexCookies,
});
console.log(response.body);
/* Expected
{
"cookies": {
"cookie1": "value1",
"cookie2": "value2"
}
}
*/
cycleTLS.exit();
})();
`
$3
`
golang
package mainimport (
"github.com/Danny-Dasilva/CycleTLS/cycletls"
)
func main() {
resp, err := client.Do("https://httpbin.org/cookies", cycletls.Options{
Body: "",
Ja3: "771,4865-4867-4866-49195-49199-52393-52392-49196-49200-49162-49161-49171-49172-51-57-47-53-10,0-23-65281-10-11-35-16-5-51-43-13-45-28-21,29-23-24-25-256-257,0",
UserAgent: "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0",
Cookies: []cycletls.Cookie{{Name: "cookie1", Value: "value1"},
{Name: "cookie2", Value: "value2"}},
}, "GET")
if err != nil {
log.Print("Request Failed: " + err.Error())
}
log.Println(resp.Body)
/* Expected
{
"cookies": {
"cookie1": "value1",
"cookie2": "value2"
}
}
*/
//Altenatively if you want access to values within a map
log.Println(resp.JSONBody())
/* Expected
map[cookies:map[cookie1:value1 cookie2:value2]]
*/
}
`
Feel free to open an Issue with a feature request for specific file type support.
$3
$3
`js
const initCycleTLS = require("cycletls");
const tough = require("tough-cookie");
const Cookie = tough.Cookie;
(async () => {
// Initiate cycleTLS and CookieJar
const cycleTLS = await initCycleTLS();
const cookieJar = new tough.CookieJar();
// Capture a set cookie
const firstResponse = await cycleTLS.get(
"https://httpbin.org/cookies/set?freeform=test",
{
disableRedirect: true,
}
);
// Now use the processCookies function to add the cookies from the response headers to the cookie jar
await processCookies(
firstResponse,
"https://httpbin.org/cookies/set?freeform=test",
cookieJar
);
// Now send a second to verify we have our cookies
const secondResponse = await cycleTLS.get("https://httpbin.org/cookies", {
headers: {
cookie: await cookieJar.getCookieString("https://httpbin.org/cookies"),
},
});
//verify cookies were set
console.log(secondResponse.body)
/* Expected
{
"cookies": {
"freeform": "test"
}
}
*/
cycleTLS.exit();
})();
async function processCookies(response, url, cookieJar) {
if (response.headers["Set-Cookie"] instanceof Array) {
response.headers["Set-Cookie"].map(
async (cookieString) => await cookieJar.setCookie(cookieString, url)
);
} else {
await cookieJar.setCookie(response.headers["Set-Cookie"], url);
}
}
`
$3
`go
package main
import (
"github.com/Danny-Dasilva/CycleTLS/cycletls"
"log"
"net/http/cookiejar"
"net/url"
"strings"
)
func main() {
client := cycletls.Init()
jar, err := cookiejar.New(nil)
if err != nil {
log.Fatal(err)
}
// First request to set cookie
firstResponse, err := client.Do("https://httpbin.org/cookies/set?a=1&b=2&c=3", cycletls.Options{
Body: "",
Ja3: "771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172-156-157-47-53,0-23-65281-10-11-35-16-5-13-18-51-45-43-27-17513,29-23-24,0",
UserAgent: "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36",
DisableRedirect: true,
},
"GET")
if err != nil {
log.Fatal(err)
}
firstURL, _ := url.Parse(firstResponse.FinalUrl)
jar.SetCookies( firstURL, firstResponse.Cookies)
// Second request to verify cookies, including the cookies from the first response
secondResponse, err := client.Do("https://httpbin.org/cookies", cycletls.Options{
Body: "",
Ja3: "771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172-156-157-47-53,0-23-65281-10-11-35-16-5-13-18-51-45-43-27-17513,29-23-24,0",
UserAgent: "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36",
Headers: map[string]string{
"Cookie": getHeadersFromJar(jar, firstURL),
},
}, "GET")
if err != nil {
log.Fatal(err)
}
log.Println("Second Response body:", secondResponse.Body)
}
func getHeadersFromJar(jar cookiejar.Jar, url url.URL) string {
cookies := jar.Cookies(url)
var cookieStrs []string
for _, cookie := range cookies {
cookieStrs = append(cookieStrs, cookie.Name+"="+cookie.Value)
}
return strings.Join(cookieStrs, "; ")
}
`
$3
$3
`
js
const initCycleTLS = require("cycletls");
const FormData = require('form-data');(async () => {
const cycleTLS = await initCycleTLS();
const formData = new FormData();
formData.append("key1", "value1");
formData.append("key2", "value2");
const response = await cycleTLS('http://httpbin.org/post', {
body: formData,
headers: {
'Content-Type': 'multipart/form-data',
},
}, 'post');
console.log(response);
cycleTLS.exit();
})();
`
$3
js
const initCycleTLS = require("cycletls");
const FormData = require('form-data');
const fs = require('fs');(async () => {
const cycleTLS = await initCycleTLS();
const formData = new FormData();
const fileStream = fs.createReadStream("../go.mod");
formData.append('file', fileStream);
const response = await cycleTLS('http://httpbin.org/post', {
body: formData,
headers: {
'Content-Type': 'multipart/form-data',
},
}, 'post');
console.log(response);
cycleTLS.exit();
})();
`$3
golang
package mainimport (
"bytes"
"github.com/Danny-Dasilva/CycleTLS/cycletls"
"log"
"mime/multipart"
)
func main() {
client := cycletls.Init()
// Prepare a buffer to write our multipart form
var requestBody bytes.Buffer
multipartWriter := multipart.NewWriter(&requestBody)
// Add form fields
multipartWriter.WriteField("key1", "value1")
multipartWriter.WriteField("key2", "value2")
contentType := multipartWriter.FormDataContentType()
// Close the writer before making the request
multipartWriter.Close()
response, err := client.Do("http://httpbin.org/post", cycletls.Options{
Body: requestBody.String(),
Headers: map[string]string{
"Content-Type": contentType,
},
}, "POST")
if err != nil {
log.Print("Request Failed: " + err.Error())
}
log.Println(response.Body)
}
`
$3
golang
package mainimport (
"github.com/Danny-Dasilva/CycleTLS/cycletls"
"bytes"
"io"
"log"
"mime/multipart"
"os"
)
func main() {
client := cycletls.Init()
// Prepare a buffer to write our multipart form
var requestBody bytes.Buffer
multipartWriter := multipart.NewWriter(&requestBody)
// Add a file
fileWriter, err := multipartWriter.CreateFormFile("fieldname", "filename")
if err != nil {
log.Fatal("CreateFormFile Error: ", err)
}
// Open the file that you want to upload
file, err := os.Open("path/to/your/file")
if err != nil {
log.Fatal("File Open Error: ", err)
}
defer file.Close()
// Copy the file to the multipart writer
_, err = io.Copy(fileWriter, file)
if err != nil {
log.Fatal("File Copy Error: ", err)
}
// Close the writer before making the request
contentType := multipartWriter.FormDataContentType()
multipartWriter.Close()
response, err := client.Do("http://httpbin.org/post", cycletls.Options{
Body: requestBody.String(),
Headers: map[string]string{
"Content-Type": contentType,
},
}, "POST")
if err != nil {
log.Print("Request Failed: " + err.Error())
}
log.Println(response.Body)
}
`
If requested encoding helpers can be added to the repo for golang
$3
$3
js
const initCycleTLS = require("cycletls");
(async () => {
const cycleTLS = await initCycleTLS(); const urlEncodedData = new URLSearchParams();
urlEncodedData.append('key1', 'value1');
urlEncodedData.append('key2', 'value2');
const response = await cycleTLS('http://httpbin.org/post', {
body: urlEncodedData,
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
}, 'post');
console.log(response);
cycleTLS.exit();
})();
`
$3
golang
package mainimport (
"log"
"net/url"
"github.com/Danny-Dasilva/CycleTLS/cycletls"
)
func main() {
client := cycletls.Init()
// Prepare form data
form := url.Values{}
form.Add("key1", "value1")
form.Add("key2", "value2")
response, err := client.Do("http://httpbin.org/post", cycletls.Options{
Body: form.Encode(),
Headers: map[string]string{
"Content-Type": "application/x-www-form-urlencoded",
},
}, "POST")
if err != nil {
log.Print("Request Failed: " + err.Error())
}
log.Println(response.Body)
}
`
$3
Images with a
header of the following types are base 64 encoded. Supported Image Types
*
image/svg+xml
*
*
*
* To write them to a file you can use the below methods
$3
js
const initCycleTLS = require("cycletls");
var fs = require("fs");//Function to write image to a file
const writeImage = (filename, data) => {
let writeStream = fs.createWriteStream(filename);
// write some data with a base64 encoding
writeStream.write(data, "base64");
writeStream.on("finish", () => {
console.log(
wrote to file ${filename});
});
// close the stream
writeStream.end();
};(async () => {
const cycleTLS = await initCycleTLS();
// try {
const jpegImage = await cycleTLS("http://httpbin.org/image/jpeg", {
ja3: "771,4865-4867-4866-49195-49199-52393-52392-49196-49200-49162-49161-49171-49172-51-57-47-53-10,0-23-65281-10-11-35-16-5-51-43-13-45-28-21,29-23-24-25-256-257,0",
userAgent:
"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0",
});
//Write Image
writeImage("test.jpeg", jpegImage.body);
cycleTLS.exit();
})();
`
$3
golang
package mainimport (
"encoding/base64"
"os"
"github.com/Danny-Dasilva/CycleTLS/cycletls"
)
func main() {
client := cycletls.Init()
response, err := client.Do("http://httpbin.org/image/jpeg", cycletls.Options{
Body: "",
Ja3: "771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172-156-157-47-53,0-23-65281-10-11-35-16-5-13-18-51-45-43-27-21,29-23-24,0",
UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.106 Safari/537.36",
}, "GET")
// Decode Base64
dec, err := base64.StdEncoding.DecodeString(response.Body)
if err != nil {
panic(err)
}
//create file to write
f, err := os.Create("test.jpeg")
if err != nil {
panic(err)
}
defer f.Close()
//write b64 to file
if _, err := f.Write(dec); err != nil {
panic(err)
}
if err := f.Sync(); err != nil {
panic(err)
}
}
`
Additional file type support is planned.
Feel free to open an Issue with a feature request for specific file type support.
$3
Natively the 3 Operating System types
, darwin , windows should cover most use cases.
You can use the built in Golang cross compiling commands go build to compile for another operating system. As an example for linux arm you need to pass in the
GOOS and GOARCH arguments`bash
$ GOOS=linux GOARCH=arm go build -o ./dist/index ./golang && chmod +x ./dist/index
`With the above command you can simply run
and CycleTLS should function as intended.Use this gist for different Operating Systems that support cross-compilation and feel free to open an Issue with a feature request for your specific operating system use case.
LICENSE
$3
_TL;DR_* Here's what the GPL3 license entails:
`markdown
1. Anyone can copy, modify and distribute this software.
2. You have to include the license and copyright notice with each and every distribution.
3. You can use this software privately.
4. You can use this software for commercial purposes.
5. Source code MUST be made available when the software is distributed.
6. Any modifications of this code base MUST be distributed with the same license, GPLv3.
7. This software is provided without warranty.
8. The software author or license can not be held liable for any damages inflicted by the software.
``More information on about the LICENSE can be found here