mirror of
https://git.phreedom.club/localhost_frssoft/compy.git
synced 2024-11-06 00:13:20 +00:00
134 lines
3.9 KiB
Markdown
134 lines
3.9 KiB
Markdown
Compy
|
|
=====
|
|
|
|
Forked from upstream: https://github.com/barnacs/compy
|
|
Main changes in this fork/branch is maximum of compression by default (worst quality)
|
|
|
|
Compy is an HTTP/HTTPS forward proxy with content compression/transcoding capabilities.
|
|
One use case is to reduce bandwidth usage when browsing on limited mobile broadband connection.
|
|
|
|
|
|
Features
|
|
--------
|
|
|
|
- HTTPS proxy (encrypted connection between client and proxy)
|
|
- man in the middle support (compress HTTPS traffic)
|
|
- HTTP2 support (over TLS)
|
|
- Brotli and gzip compression
|
|
- transcode animated GIFs to static images
|
|
- transcode JPEG images to desired quality using libjpeg
|
|
- transcode PNG and JPEG images to WebP
|
|
- HTML/CSS/JavaScript minification
|
|
|
|
|
|
Installation
|
|
------------
|
|
|
|
compy needs a few libraries to compile.
|
|
On Fedora, run `dnf install -y libjpeg-devel`
|
|
On Ubuntu, run `apt-get install -y libjpeg8-dev openssl ssl-cert`.
|
|
On macOS, run `brew install jpeg`. Then compile via:
|
|
|
|
```ShellSession
|
|
$ go get github.com/barnacs/compy
|
|
$ cd go/src/github.com/barnacs/compy/
|
|
$ go install
|
|
```
|
|
|
|
go will generate the binary at `go/bin/compy`.
|
|
|
|
### HTTPS
|
|
To use the proxy over HTTPS, you will need a certificate for your host. If you don't already have one, you can get one for [free](https://letsencrypt.org/) or you can generate a self-signed cert by running:
|
|
```
|
|
openssl req -x509 -newkey rsa:2048 -nodes -keyout cert.key -out cert.crt -days 3650 -subj '/CN=<your-domain>'
|
|
```
|
|
then visit the proxy URL and confirm that you trust your own certificate
|
|
|
|
To connect to the proxy over TLS, you will need to supply a PAC (proxy auto-config) file to the browser, as most of them do not expose this option to the UI directly. Example:
|
|
```javascript
|
|
function FindProxyForURL(url, host) {
|
|
if (url.substring(0, 5) == 'http:' || url.substring(0, 6) == 'https:') {
|
|
return "HTTPS <your-domain>:9999";
|
|
}
|
|
return "DIRECT";
|
|
}
|
|
```
|
|
|
|
This tells the browser to fetch HTTP and HTTPS URLs via the HTTPS proxy and for all other schemas, e.g., WebSocket, connect directly.
|
|
Set the path to this file in the browser UI and you're good to go.
|
|
|
|
### MitM
|
|
To enable man-in-the-middle support, you will need to generate a root cert to sign all the certs generated by the proxy on the fly:
|
|
```
|
|
openssl req -x509 -newkey rsa:2048 -nodes -keyout ca.key -out ca.crt -days 3650 -subj '/CN=<your-domain>'
|
|
```
|
|
and add it to your client (browser) as a trusted certificate authority
|
|
|
|
|
|
Usage
|
|
-----
|
|
|
|
To run a simple http forward proxy:
|
|
```
|
|
compy
|
|
```
|
|
|
|
To run it over TLS:
|
|
```
|
|
compy -cert cert.crt -key cert.key
|
|
```
|
|
|
|
With man in the middle support:
|
|
```
|
|
compy -ca ca.crt -cakey ca.key
|
|
```
|
|
|
|
Probably the best option is to run it with both TLS and MitM support, combining the two:
|
|
```
|
|
compy -cert cert.crt -key cert.key -ca ca.crt -cakey ca.key
|
|
```
|
|
|
|
You can limit access to your proxy via HTTP BASIC authentication:
|
|
|
|
```
|
|
compy -cert cert.crt -key cert.key -user myuser -pass mypass
|
|
```
|
|
|
|
You can also specify the listen port (defaults to 9999):
|
|
```
|
|
compy -host :9999
|
|
```
|
|
|
|
For compression, transcoding and minification options, see `compy --help`
|
|
|
|
Docker Usage
|
|
------------
|
|
|
|
Andrew Gaul publishes unofficial Docker images at
|
|
https://hub.docker.com/r/andrewgaul/compy/ . You can configure via:
|
|
|
|
```
|
|
sudo docker run --name=compy --env CERTIFICATE_DOMAIN=example.com --publish 9999:9999 andrewgaul/compy
|
|
```
|
|
|
|
References
|
|
----------
|
|
|
|
* [Bandwidth Hero](https://github.com/ayastreb/bandwidth-hero) - similar to compy
|
|
* [Google Flywheel](https://www.usenix.org/conference/nsdi15/technical-sessions/presentation/agababov) - NSDI 2015 paper discussing techniques used by Chrome data saver
|
|
* [Mozilla Janus](https://wiki.mozilla.org/Mobile/Janus) - now-defunct experiment similar to compy
|
|
* [WANProxy](http://wanproxy.org/) - general-purpose TCP compression
|
|
* [Ziproxy](https://en.wikipedia.org/wiki/Ziproxy) - older approach similar to compy
|
|
|
|
Credits
|
|
-------
|
|
|
|
https://github.com/pixiv/go-libjpeg
|
|
https://github.com/tdewolff/minify
|
|
|
|
|
|
License
|
|
-------
|
|
|
|
ISC, see LICENSE
|