Make better README

Author: noglitchyo

LICENSE LICENSE.md

@@ -1,6 +1,7 @@
-# Dealdoh 
+# Dealdoh
+> Deal DNS over HTTPS
 
-Dealdoh is a simple DNS over HTTPS proxy to deal with DOH built with PHP.
+Dealdoh is a simple DNS over HTTPS proxy powered by PHP.
 
 ![PHP from Packagist](https://img.shields.io/packagist/php-v/noglitchyo/dealdoh.svg)
 [![Build Status](https://travis-ci.org/noglitchyo/dealdoh.svg?branch=master)](https://travis-ci.org/noglitchyo/dealdoh)
@@ -10,42 +11,48 @@ Dealdoh is a simple DNS over HTTPS proxy to deal with DOH built with PHP.
 
 Dealdoh go a little beyond what a simple proxy should do:
 
-- [x] Can use multiple upstreams
-- [x] Can use different DNS protocol: standard udp/tcp, DoH
-- [x] Attempt to provide a DNS abstraction layer (from https://tools.ietf.org/html/rfc1035) to allow development on top of it and customization
+- [x] It can use multiple upstreams at once and provide a fallback mechanism.
+- [x] It can use different DNS protocol: RFC-1035 (TCP/UDP), RFC-8484 (DoH)
+- [x] Attempt to provide a DNS abstraction layer to allow easy development on top of it.
 
 ## Roadmap
 
-- [ ] Add full unit test coverage
-- [ ] Improve current DNS clients
-- [ ] Ability to choose a DNS upstream strategy
-- [ ] Dockerized app
+- [ ] Improve the current DNS clients
+- [ ] Add Google DOH API client (https://developers.google.com/speed/public-dns/docs/dns-over-https)
+- [ ] Ability to choose a DNS upstream fallback/selection strategy
+- [ ] Dockerized application
 - [ ] Good documentation
 
 ## Why Dealdoh?
 
-Dealdoh was created for development purpose: I wanted to reach my Docker containers from the browser by their hostnames.
-But let's give some context:
+Dealdoh was created for development purpose. I wanted to reach my Docker containers from the browser by their hostnames. 
+So I started to use a [Docker image who discover services and register their hostname into a DNS](https://github.com/mageddo/dns-proxy-server) exposed on port 53.
+But I encountered the following issues:
 - I could not change the /etc/hosts file
-- I could not change the DNS for the machine
-- My Docker container domain names were well registered in a custom DNS docker container (thanks to: https://github.com/mageddo/dns-proxy-server)
-So, I ended up with the following solution: use the DOH client from Mozilla Firefox and proxy every DNS query to Dealdoh.
-
+- I could not change the DNS for my computer (restrictions issue)
+ 
+I ended up with the following solution: use the DoH client from Firefox and proxy every DNS query to a DoH proxy: Dealdoh.
 
 ## Getting started
 
+### Requirements
+
+- A web server
+- HTTPS enabled (self-signed certificates can do depending on the DOH client)
+
 ### Installation
 
-- Install dependencies
-`composer require noglitchyo/dealdoh`
+- `composer require noglitchyo/dealdoh`
 
-- You need a PSR-7 ServerRequest if you wish to directly use the `HttpProxy::forward()` method. Please check some cool implementations below:
+- You need a PSR-7 ServerRequest if you wish to directly use the `HttpProxy::forward()` method. 
+Please check those cool implementations below:
     * https://github.com/Nyholm/psr7 - `composer require nyholm/psr7`
     * https://github.com/guzzle/psr7 - `composer require guzzle/psr7`
     * https://github.com/zendframework/zend-diactoros - `composer require zendframework/zend-diactoros`
 
-- Configure your entrypoint
-As stated before, `HttpProxy::forward()` method consumes PSR-7 ServerRequest to make it easier to implement on "Action" or "Middleware" classes.
+- Configure your dealdoh entrypoint
+
+As stated before, `HttpProxy::forward()` method consumes PSR-7 ServerRequest to make it easier to implement on "Action"/"Middleware" classes.
 The example below illustrate how to use two different DNS upstreams using different protocols.
 Two types of DNS client who can handle each of the DNS protocols used by our upstreams are also injected.
 
@@ -77,16 +84,37 @@ $dnsProxy = new \NoGlitchYo\Dealdoh\HttpProxy(
 /** @var \Psr\Http\Message\ResponseInterface */
 $response = $dnsProxy->forward($request);
 ```
+- Testing the installation
+
+First, you need to know that most of implemented DoH client/server will send/receive DNS requests on the following path:
+`/dns-query`. Make sure your Dealdoh proxy has been configured to listen on this route or configure the client accordingly.
+
+Multiple options exists: 
+
+* Using the doh-client from [Facebook Experimental](https://github.com/facebookexperimental/doh-proxy)
+
+To make it easier, I created a [Docker image](https://hub.docker.com/) that you can use by running:
+
+`docker run --name dohfb -it noglitchyo/facebookexperimental-doh-proxy doh-client --domain dealdoh.proxy.addr --qname whatismyip.com --dnssec --insecure`
+
+(Tips: pass the --insecure option to doh-client if you are using self-signed certificates **#notDocumented**)
+Please, check [how to use the client](https://github.com/facebookexperimental/doh-proxy#doh-client).
+    
+* Using your client browser  
+
+Firefox provides a [Trusted Recursive Resolver](https://wiki.mozilla.org/Trusted_Recursive_Resolver) who can be configured to query DoH servers.
+I advise you to read [this really good article from Daniel Stenberg](https://daniel.haxx.se/blog/2018/06/03/inside-firefoxs-doh-engine/) which will give you lot of details about this TRR and how to configure lik a pro.  
 
 ## License
 
 This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details
 
 ## Acknowledgments
 
-* Thanks to https://github.com/reactphp/dns for their really good DNS wire format codec 
-* Thanks to https://github.com/mageddo/dns-proxy-server for its amazing container hostname discovery & DNS image
-* Thanks to https://github.com/facebookexperimental/doh-proxy, because their doh-client rocks!
+* https://github.com/reactphp/dns for their really good DNS wire format codec. 
+* https://github.com/mageddo/dns-proxy-server for its amazing container hostname discovery & DNS Docker image.
+Combined with Dealdoh it is amazing.
+* https://github.com/facebookexperimental/doh-proxy, because their doh-client rocks!
 
 ## References