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122 lines
3.7 KiB
122 lines
3.7 KiB
# HTTPlug Discovery
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[](https://github.com/php-http/discovery/releases)
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[](LICENSE)
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[](https://github.com/php-http/discovery/actions/workflows/ci.yml?query=branch%3A1.x)
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[](https://scrutinizer-ci.com/g/php-http/discovery)
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[](https://scrutinizer-ci.com/g/php-http/discovery)
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[](https://packagist.org/packages/php-http/discovery)
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**This library provides auto-discovery and auto-installation of well-known PSR-17, PSR-18 and HTTPlug implementations.**
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## Install
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Via Composer
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``` bash
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composer require php-http/discovery
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```
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## Usage as a library author
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Please see the [official documentation](http://php-http.readthedocs.org/en/latest/discovery.html).
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If your library/SDK needs a PSR-18 client, here is a quick example.
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First, you need to install a PSR-18 client and a PSR-17 factory implementations.
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This should be done only for dev dependencies as you don't want to force a
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specific implementation on your users:
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```bash
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composer require --dev symfony/http-client
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composer require --dev nyholm/psr7
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```
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Then, you can disable the Composer plugin embeded in `php-http/discovery`
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because you just installed the dev dependencies you need for testing:
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```bash
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composer config allow-plugins.php-http/discovery false
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```
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Finally, you need to require `php-http/discovery` and the generic implementations
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that your library is going to need:
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```bash
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composer require 'php-http/discovery:^1.17'
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composer require 'psr/http-client-implementation:*'
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composer require 'psr/http-factory-implementation:*'
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```
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Now, you're ready to make an HTTP request:
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```php
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use Http\Discovery\Psr18Client;
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$client = new Psr18Client();
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$request = $client->createRequest('GET', 'https://example.com');
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$response = $client->sendRequest($request);
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```
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Internally, this code will use whatever PSR-7, PSR-17 and PSR-18 implementations
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that your users have installed.
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## Usage as a library user
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If you use a library/SDK that requires `php-http/discovery`, you can configure
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the auto-discovery mechanism to use a specific implementation when many are
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available in your project.
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For example, if you have both `nyholm/psr7` and `guzzlehttp/guzzle` in your
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project, you can tell `php-http/discovery` to use `guzzlehttp/guzzle` instead of
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`nyholm/psr7` by running the following command:
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```bash
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composer config extra.discovery.psr/http-factory-implementation GuzzleHttp\\Psr7\\HttpFactory
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```
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This will update your `composer.json` file to add the following configuration:
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```json
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{
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"extra": {
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"discovery": {
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"psr/http-factory-implementation": "GuzzleHttp\\Psr7\\HttpFactory"
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}
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}
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}
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```
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Don't forget to run `composer install` to apply the changes, and ensure that
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the composer plugin is enabled:
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```bash
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composer config allow-plugins.php-http/discovery true
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composer install
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```
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## Testing
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``` bash
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composer test
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```
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## Contributing
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Please see our [contributing guide](http://docs.php-http.org/en/latest/development/contributing.html).
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## Security
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If you discover any security related issues, please contact us at [security@php-http.org](mailto:security@php-http.org).
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## License
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The MIT License (MIT). Please see [License File](LICENSE) for more information.
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