README.md

@@ -28,7 +28,6 @@ A [PSR-7](https://www.php-fig.org/psr/psr-7/)/[PSR-17](https://www.php-fig.org/p
 
 # Documentation
 
-See [the wiki](https://github.com/chillerlan/php-httpinterface/wiki) for advanced documentation.
 An API documentation created with [phpDocumentor](https://www.phpdoc.org/) can be found at https://chillerlan.github.io/php-httpinterface/ (WIP).
 
 
@@ -59,6 +58,142 @@ In case you want to keep using `dev-main`, specify the hash of a commit to avoid
 Profit!
 
 
+## Quickstart
+
+The HTTP clients `CurlClient` and `StreamClient` are invoked with a `ResponseFactoryInterface` instance 
+as the first parameter, followed by optional `HTTPOptions` and PSR-3 `LoggerInterface` instances.
+You can then send a request via the implemented PSR-18 method `ClientInterface::sendRequest()`,
+using a PSR-7 `RequestInterface` and expect a PSR-7 `ResponseInterface`.
+
+### `CurlClient`, `StreamClient`
+
+```php
+$options             = new HTTPOptions;
+$options->ca_info    = '/path/to/cacert.pem';
+$options->user_agent = 'my cool user agent 1.0';
+
+$httpClient    = new CurlClient($responseFactory, $options, $logger);
+$request = $requestFactory->createRequest('GET', 'https://www.example.com?foo=bar');
+
+$httpClient->sendRequest($request);
+```
+
+
+### `CurlMultiClient`
+
+The `CurlMultiClient` client implements asynchronous multi requests (["rolling-curl"](https://code.google.com/archive/p/rolling-curl/)).
+It needs a `MultiResponseHandlerInterface` that parses the incoming responses, the callback may return a failed request to the stack:
+
+```php
+$handler = new class () implements MultiResponseHandlerInterface{
+
+	public function handleResponse(
+		ResponseInterface $response, // the incoming response
+		RequestInterface $request,   // the corresponding request
+		int $id,                     // the request id
+		array $curl_info ,           // the curl_getinfo() result for this request
+	):RequestInterface|null{
+
+		if($response->getStatusCode() !== 200){
+			// return the failed request back to the stack
+			return $request;
+		}
+
+		try{
+			$body = $response->getBody();
+
+			// the response body is empty for some reason, we pretend that's fine and exit
+			if($body->getSize() === 0){
+				return null;
+			}
+
+			// parse the response body, store the result etc.
+			$data = $body->getContents();
+
+			// save data to file, database or whatever...
+			// ...
+
+		}
+		catch(Throwable){
+			// something went wrong, return the request to the stack for another try
+			return $request;
+		}
+
+		// everything ok, nothing to return
+		return null;
+	}
+
+};
+```
+
+You can then invoke the multi request client - the `MultiResponseHandlerInterface` and `ResponseFactoryInterface` are mandatory, 
+`HTTPOptions` and `LoggerInterface` are optional:
+
+```php
+$options = new HTTPOptions;
+$options->ca_info     = '/path/to/cacert.pem';
+$options->user_agent  = 'my cool user agent 1.0';
+$options->sleep       = 750000; // microseconds, see usleep()
+$options->window_size = 5;
+$options->retries     = 1;
+
+$multiClient = new CurlMultiClient($handler, $responseFactory, $options, $logger);
+
+// create and add the requests
+foreach(['..', '...', '....'] as $item){
+	$multiClient->addRequest($factory->createRequest('GET', $endpoint.'/'.$item));
+}
+
+// process the queue
+$multiClient->process();
+```
+
+
+### `URLExtractor`
+
+The `URLExtractor` wraps a PSR-18 `ClientInterface` to extract and follow shortened URLs to their original location.
+
+```php
+$urlExtractor = new URLExtractor($httpClient, $responseFactory);
+
+$request = $factory->createRequest('GET', 'https://t.co/ZSS6nVOcVp');
+
+$urlExtractor->sendRequest($request); // -> response from the final location
+
+// you can retrieve an array with all followed locations afterwards
+$responses = $this->http->getResponses(); // -> ResponseInterface[]
+
+// if you just want the URL of the final location, you can use the extract method: 
+$url = $this->http->extract('https://t.co/ZSS6nVOcVp'); // -> https://api.guildwars2.com/v2/build
+```
+
+
+### `LoggingClient`
+
+The `LoggingClient` wraps a `ClientInterface` and outputs the HTTP messages in a readable way through a `LoggerInterface` (do NOT use in production!).
+
+```php
+$loggingClient = new LoggingClient($httpClient, $logger);
+
+$loggingClient->sendRequest($request); // -> log to output given via logger
+```
+
+
+### Auto generated API documentation
+
+The API documentation can be auto generated with [phpDocumentor](https://www.phpdoc.org/).
+There is an [online version available](https://chillerlan.github.io/php-httpinterface/) via the [gh-pages branch](https://github.com/chillerlan/php-httpinterface/tree/gh-pages) that is [automatically deployed](https://github.com/chillerlan/php-httpinterface/deployments) on each push to main.
+
+Locally created docs will appear in the directory `.build/phpdocs/`. If you'd like to create local docs, please follow these steps:
+
+- [download phpDocumentor](https://github.com/phpDocumentor/phpDocumentor/releases) v3+ as .phar archive
+- run it in the repository root directory:
+	- on Windows `c:\path\to\php.exe c:\path\to\phpDocumentor.phar --config=phpdoc.xml`
+	- on Linux just `php /path/to/phpDocumentor.phar --config=phpdoc.xml`
+- open [index.html](./.build/phpdocs/index.html) in a browser
+- profit!
+
+
 ## Disclaimer
 
 Use at your own risk!

composer.json

@@ -45,6 +45,9 @@
 		"phpunit/phpunit": "^10.5",
 		"squizlabs/php_codesniffer": "^3.9"
 	},
+	"suggest": {
+		"chillerlan/php-oauth": "A PSR-7 OAuth client/handler that also acts as PSR-18 HTTP client"
+	},
 	"autoload": {
 		"psr-4": {
 			"chillerlan\\HTTP\\": "src/"