CycleTLS

README

CycleTLS

Currently a WIP and in Active development. See the Tab for more info

If you have a API change or feature request feel free to open an Issue

🚀 Features

• High-performance Built-in goroutine pool used for handling asynchronous requests
• Custom header ordering via fhttp
• Proxy support
• 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 ^v14.0
golang ^v1.16x

Installation

Node Js

$ npm install cycletls

Golang

$ go get github.com/ChengHoward/CycleTLS/cycletls 

Usage

Example CycleTLS Request for Typescript and Javascript

You can run this test in tests/simple.test.ts

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

package main

import (
	"log"
	"github.com/ChengHoward/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)
}

Creating an instance

In order to create a cycleTLS instance, you can run the following:

JavaScript

// 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

import (
	"github.com/ChengHoward/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

{
  // 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"]
}
);

CycleTLS Response Schema

{
  // Status code returned from server (Number)
  status: 200,
  // Body returned from the server (String)
  body: "",
  // Headers returned from the server (Object)
  headers: {
    "some": "header",
    ...
  }
}
);

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.

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();
  });
})();

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/ChengHoward/CycleTLS/cycletls

install npm packages

npm install

To recompile index.ts in the src folder

npm run build

To recompile Golang files in the golang folder

Windows

npm run build:windows

Linux

npm run build:linux

Mac

npm run build:mac:

Questions

How do I set Cookies

There are two simple ways to interface with cookies

Javascript Simple Cookie Configuration

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

Javascript Complex Cookie Configuration

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

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

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();
})();

Golang Configure Cookies

package main

import (
    "github.com/ChengHoward/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.

How do I use CookieJar in CycleTLS?

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);
  }
}

Golang example coming soon

How do I download images?

Images with a Content-Type header of the following types are base 64 encoded.

Supported Image Types

• image/svg+xml
• image/webp
• image/jpeg
• image/png
• application/pdf

To write them to a file you can use the below methods

Javascript Image Write to File

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();
})();

Golang Image Write to File

package main

import (
    "encoding/base64"
    "os"
    "github.com/ChengHoward/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.

Cross Compiling for other platforms

Natively the 3 Operating System types linux, 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

$ GOOS=linux GOARCH=arm go build -o ./dist/index ./golang && chmod +x ./dist/index

With the above command you can simply run ./index 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

GPL3 LICENSE SYNOPSIS

TL;DR* Here's what the GPL3 license entails:

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