# ratio-spoof
Ratio-spoof is a cross-platform, free and open source tool to spoof the download/upload amount on private bittorrent trackers.

![](./assets/demo.gif)

## Motivation
Here in Brazil, not everybody has a great upload speed, and most private trackers require a ratio greater than or equal to 1. For example, if you downloaded 1GB, you must also upload 1GB in order to survive. Additionally, I have always been fascinated by the BitTorrent protocol. In fact, [I even made a BitTorrent web client to learn more about it](https://github.com/ap-pauloafonso/rwTorrent). So, if you have a bad internet connection, feel free to use this tool. Otherwise, please consider seeding the files with a real torrent client.

## How does it work?
![Diagram](./assets/how-it-works.png)
Bittorrent protocol works in such a way that there is no way that a tracker knows how much certain peer have downloaded or uploaded, so the tracker depends on the peer itself telling the amounts.

Ratio-spoof acts like a normal bittorrent client but without downloading or uploading anything, in fact it just tricks the tracker pretending that.

## Usage
```
usage: 
	./ratio-spoof -t <TORRENT_PATH> -d <INITIAL_DOWNLOADED> -ds <DOWNLOAD_SPEED> -u <INITIAL_UPLOADED> -us <UPLOAD_SPEED> 

optional arguments:
	-h           		show this help message and exit
	-p [PORT]    		change the port number, default: 8999
	-c [CLIENT_CODE]	change the client emulation, default: qbit-4.0.3
	  
required arguments:
	-t  <TORRENT_PATH>     
	-d  <INITIAL_DOWNLOADED> 
	-ds <DOWNLOAD_SPEED>						  
	-u  <INITIAL_UPLOADED> 
	-us <UPLOAD_SPEED> 						  
	  
<INITIAL_DOWNLOADED> and <INITIAL_UPLOADED> must be in %, b, kb, mb, gb, tb
<DOWNLOAD_SPEED> and <UPLOAD_SPEED> must be in kbps, mbps
[CLIENT_CODE] options: qbit-4.0.3, qbit-4.3.3
```

```
./ratio-spoof -d 90% -ds 100kbps -u 0% -us 1024kbps -t (torrentfile_path) 
```
* Will start "downloading" with the initial value of 90% of the torrent total size at 100 kbps speed until it reaches 100% mark.
* Will start "uploading" with the initial value of 0% of the torrent total size at 1024kbps (aka 1mb/s) indefinitely.

```
./ratio-spoof -d 2gb -ds 500kbps -u 1gb -us 1024kbps -t (torrentfile_path) 
```
* Will start "downloading" with the initial value of 2gb downloaded  if possible at 500kbps speed until it reaches 100% mark.
* Will start "uploading" with the initial value of 1gb uplodead at 1024kbps (aka 1mb/s) indefinitely.

## Will I get caught using it ?
Depends on whether you use it carefully, It's a hard task to catch cheaters, but if you start uploading crazy amounts out of nowhere or seeding something with no active leecher on the swarm you may be in risk.

## Bittorrent client supported 
The default client emulation is qbittorrent v4.0.3, however you can change it by using the -c argument

## Resources
http://www.bittorrent.org/beps/bep_0003.html

https://wiki.theory.org/BitTorrentSpecification