WebSVN – dokuwiki-matrixnotifierwas-plugin – Blame – Rev 1

- We now look for environment variables in the `$_SERVER` super global, due to thread safety issues with `getenv`. We continue to fallback to `getenv` in CLI environments, for maximum compatibility.

34

- The `get`, `head`, `put`, `post`, `patch`, `delete`, `getAsync`, `headAsync`, `putAsync`, `postAsync`, `patchAsync`, and `deleteAsync` methods are now implemented as genuine methods on `GuzzleHttp\Client`, with strong typing. The original `__call` implementation remains unchanged for now, for maximum backwards compatibility, but won't be invoked under normal operation.

35

- The `log` middleware will log the errors with level `error` instead of `notice`

36

- Support for international domain names (IDN) is now disabled by default, and enabling it requires installing ext-intl, linked against a modern version of the C library (ICU 4.6 or higher).

37

38

#### Native functions calls

39

40

All internal native functions calls of Guzzle are now prefixed with a slash. This

41

change makes it impossible for method overloading by other libraries or applications.

Example:

```php

// Before:

curl_version();

// After:

\curl_version();

```

For the full diff you can check [here](https://github.com/guzzle/guzzle/compare/6.5.4..master).

5.0 to 6.0

----------

Guzzle now uses [PSR-7](https://www.php-fig.org/psr/psr-7/) for HTTP messages.

58

Due to the fact that these messages are immutable, this prompted a refactoring

59

of Guzzle to use a middleware based system rather than an event system. Any

60

HTTP message interaction (e.g., `GuzzleHttp\Message\Request`) need to be

61

updated to work with the new immutable PSR-7 request and response objects. Any

62

event listeners or subscribers need to be updated to become middleware

63

functions that wrap handlers (or are injected into a

64

`GuzzleHttp\HandlerStack`).

65

66

- Removed `GuzzleHttp\BatchResults`

67

- Removed `GuzzleHttp\Collection`

68

- Removed `GuzzleHttp\HasDataTrait`

69

- Removed `GuzzleHttp\ToArrayInterface`

70

- The `guzzlehttp/streams` dependency has been removed. Stream functionality

71

is now present in the `GuzzleHttp\Psr7` namespace provided by the

72

`guzzlehttp/psr7` package.

73

- Guzzle no longer uses ReactPHP promises and now uses the

74

`guzzlehttp/promises` library. We use a custom promise library for three

75

significant reasons:

76

1. React promises (at the time of writing this) are recursive. Promise

77

chaining and promise resolution will eventually blow the stack. Guzzle

78

promises are not recursive as they use a sort of trampolining technique.

79

Note: there has been movement in the React project to modify promises to

80

no longer utilize recursion.

81

2. Guzzle needs to have the ability to synchronously block on a promise to

82

wait for a result. Guzzle promises allows this functionality (and does

83

not require the use of recursion).

84

3. Because we need to be able to wait on a result, doing so using React

85

promises requires wrapping react promises with RingPHP futures. This

86

overhead is no longer needed, reducing stack sizes, reducing complexity,

87

and improving performance.

88

- `GuzzleHttp\Mimetypes` has been moved to a function in

89

`GuzzleHttp\Psr7\mimetype_from_extension` and

90

`GuzzleHttp\Psr7\mimetype_from_filename`.

91

- `GuzzleHttp\Query` and `GuzzleHttp\QueryParser` have been removed. Query

92

strings must now be passed into request objects as strings, or provided to

93

the `query` request option when creating requests with clients. The `query`

94

option uses PHP's `http_build_query` to convert an array to a string. If you

95

need a different serialization technique, you will need to pass the query

96

string in as a string. There are a couple helper functions that will make

97

working with query strings easier: `GuzzleHttp\Psr7\parse_query` and

98

`GuzzleHttp\Psr7\build_query`.

99

- Guzzle no longer has a dependency on RingPHP. Due to the use of a middleware

100

system based on PSR-7, using RingPHP and it's middleware system as well adds

101

more complexity than the benefits it provides. All HTTP handlers that were

102

present in RingPHP have been modified to work directly with PSR-7 messages

103

and placed in the `GuzzleHttp\Handler` namespace. This significantly reduces

104

complexity in Guzzle, removes a dependency, and improves performance. RingPHP

105

will be maintained for Guzzle 5 support, but will no longer be a part of

106

Guzzle 6.

107

- As Guzzle now uses a middleware based systems the event system and RingPHP

108

integration has been removed. Note: while the event system has been removed,

109

it is possible to add your own type of event system that is powered by the

110

middleware system.

111

- Removed the `Event` namespace.

112

- Removed the `Subscriber` namespace.

113

- Removed `Transaction` class

114

- Removed `RequestFsm`

115

- Removed `RingBridge`

116

- `GuzzleHttp\Subscriber\Cookie` is now provided by

117

`GuzzleHttp\Middleware::cookies`

118

- `GuzzleHttp\Subscriber\HttpError` is now provided by

119

`GuzzleHttp\Middleware::httpError`

120

- `GuzzleHttp\Subscriber\History` is now provided by

121

`GuzzleHttp\Middleware::history`

122

- `GuzzleHttp\Subscriber\Mock` is now provided by

123

`GuzzleHttp\Handler\MockHandler`

124

- `GuzzleHttp\Subscriber\Prepare` is now provided by

125

`GuzzleHttp\PrepareBodyMiddleware`

126

- `GuzzleHttp\Subscriber\Redirect` is now provided by

127

`GuzzleHttp\RedirectMiddleware`

128

- Guzzle now uses `Psr\Http\Message\UriInterface` (implements in

129

`GuzzleHttp\Psr7\Uri`) for URI support. `GuzzleHttp\Url` is now gone.

130

- Static functions in `GuzzleHttp\Utils` have been moved to namespaced

131

functions under the `GuzzleHttp` namespace. This requires either a Composer

132

based autoloader or you to include functions.php.

133

- `GuzzleHttp\ClientInterface::getDefaultOption` has been renamed to

134

`GuzzleHttp\ClientInterface::getConfig`.

135

- `GuzzleHttp\ClientInterface::setDefaultOption` has been removed.

136

- The `json` and `xml` methods of response objects has been removed. With the

137

migration to strictly adhering to PSR-7 as the interface for Guzzle messages,

138

adding methods to message interfaces would actually require Guzzle messages

139

to extend from PSR-7 messages rather then work with them directly.

140

141

## Migrating to middleware

142

143

The change to PSR-7 unfortunately required significant refactoring to Guzzle

144

due to the fact that PSR-7 messages are immutable. Guzzle 5 relied on an event

145

system from plugins. The event system relied on mutability of HTTP messages and

146

side effects in order to work. With immutable messages, you have to change your

147

workflow to become more about either returning a value (e.g., functional

148

middlewares) or setting a value on an object. Guzzle v6 has chosen the

149

functional middleware approach.

150

151

Instead of using the event system to listen for things like the `before` event,

152

you now create a stack based middleware function that intercepts a request on

153

the way in and the promise of the response on the way out. This is a much

154

simpler and more predictable approach than the event system and works nicely

155

with PSR-7 middleware. Due to the use of promises, the middleware system is

also asynchronous.

v5:

```php

use GuzzleHttp\Event\BeforeEvent;

162

$client = new GuzzleHttp\Client();

163

// Get the emitter and listen to the before event.

164

$client->getEmitter()->on('before', function (BeforeEvent $e) {

165

// Guzzle v5 events relied on mutation

166

$e->getRequest()->setHeader('X-Foo', 'Bar');

});

```

v6:

In v6, you can modify the request before it is sent using the `mapRequest`

173

middleware. The idiomatic way in v6 to modify the request/response lifecycle is

174

to setup a handler middleware stack up front and inject the handler into a

client.

```php

use GuzzleHttp\Middleware;

179

// Create a handler stack that has all of the default middlewares attached

180

$handler = GuzzleHttp\HandlerStack::create();

181

// Push the handler onto the handler stack

182

$handler->push(Middleware::mapRequest(function (RequestInterface $request) {

183

// Notice that we have to return a request object

184

return $request->withHeader('X-Foo', 'Bar');

185

}));

186

// Inject the handler into the client

187

$client = new GuzzleHttp\Client(['handler' => $handler]);

```

## POST Requests

This version added the [`form_params`](https://docs.guzzlephp.org/en/latest/request-options.html#form_params)

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and `multipart` request options. `form_params` is an associative array of

194

strings or array of strings and is used to serialize an

195

`application/x-www-form-urlencoded` POST request. The

196

[`multipart`](https://docs.guzzlephp.org/en/latest/request-options.html#multipart)

197

option is now used to send a multipart/form-data POST request.

198

199

`GuzzleHttp\Post\PostFile` has been removed. Use the `multipart` option to add

200

POST files to a multipart/form-data request.

201

202

The `body` option no longer accepts an array to send POST requests. Please use

203

`multipart` or `form_params` instead.

204

205

The `base_url` option has been renamed to `base_uri`.

4.x to 5.0

----------

## Rewritten Adapter Layer

211

212

Guzzle now uses [RingPHP](https://ringphp.readthedocs.org/en/latest) to send

213

HTTP requests. The `adapter` option in a `GuzzleHttp\Client` constructor

214

is still supported, but it has now been renamed to `handler`. Instead of

215

passing a `GuzzleHttp\Adapter\AdapterInterface`, you must now pass a PHP

216

`callable` that follows the RingPHP specification.

217

218

## Removed Fluent Interfaces

219

220

[Fluent interfaces were removed](https://ocramius.github.io/blog/fluent-interfaces-are-evil/)

221

from the following classes:

222

223

- `GuzzleHttp\Collection`

224

- `GuzzleHttp\Url`

225

- `GuzzleHttp\Query`

226

- `GuzzleHttp\Post\PostBody`

227

- `GuzzleHttp\Cookie\SetCookie`

228

229

## Removed functions.php

230

231

Removed "functions.php", so that Guzzle is truly PSR-4 compliant. The following

232

functions can be used as replacements.

233

234

- `GuzzleHttp\json_decode` -> `GuzzleHttp\Utils::jsonDecode`

235

- `GuzzleHttp\get_path` -> `GuzzleHttp\Utils::getPath`

236

- `GuzzleHttp\Utils::setPath` -> `GuzzleHttp\set_path`

237

- `GuzzleHttp\Pool::batch` -> `GuzzleHttp\batch`. This function is, however,

238

deprecated in favor of using `GuzzleHttp\Pool::batch()`.

239

240

The "procedural" global client has been removed with no replacement (e.g.,

241

`GuzzleHttp\get()`, `GuzzleHttp\post()`, etc.). Use a `GuzzleHttp\Client`

242

object as a replacement.

243

244

## `throwImmediately` has been removed

245

246

The concept of "throwImmediately" has been removed from exceptions and error

247

events. This control mechanism was used to stop a transfer of concurrent

248

requests from completing. This can now be handled by throwing the exception or

249

by cancelling a pool of requests or each outstanding future request

250

individually.

251

252

## headers event has been removed

253

254

Removed the "headers" event. This event was only useful for changing the

255

body a response once the headers of the response were known. You can implement

256

a similar behavior in a number of ways. One example might be to use a

257

FnStream that has access to the transaction being sent. For example, when the

258

first byte is written, you could check if the response headers match your

259

expectations, and if so, change the actual stream body that is being

260

written to.

261

262

## Updates to HTTP Messages

263

264

Removed the `asArray` parameter from

265

`GuzzleHttp\Message\MessageInterface::getHeader`. If you want to get a header

266

value as an array, then use the newly added `getHeaderAsArray()` method of

267

`MessageInterface`. This change makes the Guzzle interfaces compatible with

268

the PSR-7 interfaces.

3.x to 4.0

----------

## Overarching changes:

274

275

- Now requires PHP 5.4 or greater.

276

- No longer requires cURL to send requests.

277

- Guzzle no longer wraps every exception it throws. Only exceptions that are

278

recoverable are now wrapped by Guzzle.

279

- Various namespaces have been removed or renamed.

280

- No longer requiring the Symfony EventDispatcher. A custom event dispatcher

281

based on the Symfony EventDispatcher is

282

now utilized in `GuzzleHttp\Event\EmitterInterface` (resulting in significant

283

speed and functionality improvements).

284

285

Changes per Guzzle 3.x namespace are described below.

## Batch

The `Guzzle\Batch` namespace has been removed. This is best left to

290

third-parties to implement on top of Guzzle's core HTTP library.

## Cache

The `Guzzle\Cache` namespace has been removed. (Todo: No suitable replacement

295

has been implemented yet, but hoping to utilize a PSR cache interface).

## Common

- Removed all of the wrapped exceptions. It's better to use the standard PHP

300

library for unrecoverable exceptions.

301

- `FromConfigInterface` has been removed.

302

- `Guzzle\Common\Version` has been removed. The VERSION constant can be found

303

at `GuzzleHttp\ClientInterface::VERSION`.

### Collection

- `getAll` has been removed. Use `toArray` to convert a collection to an array.

308

- `inject` has been removed.

309

- `keySearch` has been removed.

310

- `getPath` no longer supports wildcard expressions. Use something better like

311

JMESPath for this.

312

- `setPath` now supports appending to an existing array via the `[]` notation.

### Events

Guzzle no longer requires Symfony's EventDispatcher component. Guzzle now uses

317

`GuzzleHttp\Event\Emitter`.

318

319

- `Symfony\Component\EventDispatcher\EventDispatcherInterface` is replaced by

320

`GuzzleHttp\Event\EmitterInterface`.

321

- `Symfony\Component\EventDispatcher\EventDispatcher` is replaced by

322

`GuzzleHttp\Event\Emitter`.

323

- `Symfony\Component\EventDispatcher\Event` is replaced by

324

`GuzzleHttp\Event\Event`, and Guzzle now has an EventInterface in

325

`GuzzleHttp\Event\EventInterface`.

326

- `AbstractHasDispatcher` has moved to a trait, `HasEmitterTrait`, and

327

`HasDispatcherInterface` has moved to `HasEmitterInterface`. Retrieving the

328

event emitter of a request, client, etc. now uses the `getEmitter` method

329

rather than the `getDispatcher` method.

#### Emitter

- Use the `once()` method to add a listener that automatically removes itself

334

the first time it is invoked.

335

- Use the `listeners()` method to retrieve a list of event listeners rather than

336

the `getListeners()` method.

337

- Use `emit()` instead of `dispatch()` to emit an event from an emitter.

338

- Use `attach()` instead of `addSubscriber()` and `detach()` instead of

339

`removeSubscriber()`.

340

341

```php

342

$mock = new Mock();

343

// 3.x

344

$request->getEventDispatcher()->addSubscriber($mock);

345

$request->getEventDispatcher()->removeSubscriber($mock);

346

// 4.x

347

$request->getEmitter()->attach($mock);

348

$request->getEmitter()->detach($mock);

349

```

350

351

Use the `on()` method to add a listener rather than the `addListener()` method.

```php

// 3.x

$request->getEventDispatcher()->addListener('foo', function (Event $event) { /* ... */ } );

356

// 4.x

357

$request->getEmitter()->on('foo', function (Event $event, $name) { /* ... */ } );

```

## Http

### General changes

363

364

- The cacert.pem certificate has been moved to `src/cacert.pem`.

365

- Added the concept of adapters that are used to transfer requests over the

366

wire.

367

- Simplified the event system.

368

- Sending requests in parallel is still possible, but batching is no longer a

369

concept of the HTTP layer. Instead, you must use the `complete` and `error`

370

events to asynchronously manage parallel request transfers.

371

- `Guzzle\Http\Url` has moved to `GuzzleHttp\Url`.

372

- `Guzzle\Http\QueryString` has moved to `GuzzleHttp\Query`.

373

- QueryAggregators have been rewritten so that they are simply callable

374

functions.

375

- `GuzzleHttp\StaticClient` has been removed. Use the functions provided in

376

`functions.php` for an easy to use static client instance.

377

- Exceptions in `GuzzleHttp\Exception` have been updated to all extend from

378

`GuzzleHttp\Exception\TransferException`.

### Client

Calling methods like `get()`, `post()`, `head()`, etc. no longer create and

383

return a request, but rather creates a request, sends the request, and returns

the response.

```php

// 3.0

$request = $client->get('/');

389

$response = $request->send();

390

391

// 4.0

392

$response = $client->get('/');

393

394

// or, to mirror the previous behavior

395

$request = $client->createRequest('GET', '/');

396

$response = $client->send($request);

397

```

398

399

`GuzzleHttp\ClientInterface` has changed.

400

401

- The `send` method no longer accepts more than one request. Use `sendAll` to

402

send multiple requests in parallel.

403

- `setUserAgent()` has been removed. Use a default request option instead. You

404

could, for example, do something like:

405

`$client->setConfig('defaults/headers/User-Agent', 'Foo/Bar ' . $client::getDefaultUserAgent())`.

406

- `setSslVerification()` has been removed. Use default request options instead,

407

like `$client->setConfig('defaults/verify', true)`.

408

409

`GuzzleHttp\Client` has changed.

410

411

- The constructor now accepts only an associative array. You can include a

412

`base_url` string or array to use a URI template as the base URL of a client.

413

You can also specify a `defaults` key that is an associative array of default

414

request options. You can pass an `adapter` to use a custom adapter,

415

`batch_adapter` to use a custom adapter for sending requests in parallel, or

416

a `message_factory` to change the factory used to create HTTP requests and

417

responses.

418

- The client no longer emits a `client.create_request` event.

419

- Creating requests with a client no longer automatically utilize a URI

420

template. You must pass an array into a creational method (e.g.,

421

`createRequest`, `get`, `put`, etc.) in order to expand a URI template.

### Messages

Messages no longer have references to their counterparts (i.e., a request no

426

longer has a reference to it's response, and a response no loger has a

427

reference to its request). This association is now managed through a

428

`GuzzleHttp\Adapter\TransactionInterface` object. You can get references to

429

these transaction objects using request events that are emitted over the

430

lifecycle of a request.

431

432

#### Requests with a body

433

434

- `GuzzleHttp\Message\EntityEnclosingRequest` and

435

`GuzzleHttp\Message\EntityEnclosingRequestInterface` have been removed. The

436

separation between requests that contain a body and requests that do not

437

contain a body has been removed, and now `GuzzleHttp\Message\RequestInterface`

438

handles both use cases.

439

- Any method that previously accepts a `GuzzleHttp\Response` object now accept a

440

`GuzzleHttp\Message\ResponseInterface`.

441

- `GuzzleHttp\Message\RequestFactoryInterface` has been renamed to

442

`GuzzleHttp\Message\MessageFactoryInterface`. This interface is used to create

443

both requests and responses and is implemented in

444

`GuzzleHttp\Message\MessageFactory`.

445

- POST field and file methods have been removed from the request object. You

446

must now use the methods made available to `GuzzleHttp\Post\PostBodyInterface`

447

to control the format of a POST body. Requests that are created using a

448

standard `GuzzleHttp\Message\MessageFactoryInterface` will automatically use

449

a `GuzzleHttp\Post\PostBody` body if the body was passed as an array or if

450

the method is POST and no body is provided.

451

452

```php

453

$request = $client->createRequest('POST', '/');

454

$request->getBody()->setField('foo', 'bar');

455

$request->getBody()->addFile(new PostFile('file_key', fopen('/path/to/content', 'r')));

```

#### Headers

- `GuzzleHttp\Message\Header` has been removed. Header values are now simply

461

represented by an array of values or as a string. Header values are returned

462

as a string by default when retrieving a header value from a message. You can

463

pass an optional argument of `true` to retrieve a header value as an array

464

of strings instead of a single concatenated string.

465

- `GuzzleHttp\PostFile` and `GuzzleHttp\PostFileInterface` have been moved to

466

`GuzzleHttp\Post`. This interface has been simplified and now allows the

467

addition of arbitrary headers.

468

- Custom headers like `GuzzleHttp\Message\Header\Link` have been removed. Most

469

of the custom headers are now handled separately in specific

470

subscribers/plugins, and `GuzzleHttp\Message\HeaderValues::parseParams()` has

471

been updated to properly handle headers that contain parameters (like the

`Link` header).

#### Responses

- `GuzzleHttp\Message\Response::getInfo()` and

477

`GuzzleHttp\Message\Response::setInfo()` have been removed. Use the event

478

system to retrieve this type of information.

479

- `GuzzleHttp\Message\Response::getRawHeaders()` has been removed.

480

- `GuzzleHttp\Message\Response::getMessage()` has been removed.

481

- `GuzzleHttp\Message\Response::calculateAge()` and other cache specific

482

methods have moved to the CacheSubscriber.

483

- Header specific helper functions like `getContentMd5()` have been removed.

484

Just use `getHeader('Content-MD5')` instead.

485

- `GuzzleHttp\Message\Response::setRequest()` and

486

`GuzzleHttp\Message\Response::getRequest()` have been removed. Use the event

487

system to work with request and response objects as a transaction.

488

- `GuzzleHttp\Message\Response::getRedirectCount()` has been removed. Use the

489

Redirect subscriber instead.

490

- `GuzzleHttp\Message\Response::isSuccessful()` and other related methods have

491

been removed. Use `getStatusCode()` instead.

492

493

#### Streaming responses

494

495

Streaming requests can now be created by a client directly, returning a

496

`GuzzleHttp\Message\ResponseInterface` object that contains a body stream

497

referencing an open PHP HTTP stream.

```php

// 3.0

use Guzzle\Stream\PhpStreamRequestFactory;

502

$request = $client->get('/');

503

$factory = new PhpStreamRequestFactory();

504

$stream = $factory->fromRequest($request);

505

$data = $stream->read(1024);

506

507

// 4.0

508

$response = $client->get('/', ['stream' => true]);

509

// Read some data off of the stream in the response body

510

$data = $response->getBody()->read(1024);

```

#### Redirects

The `configureRedirects()` method has been removed in favor of a

516

`allow_redirects` request option.

517

518

```php

519

// Standard redirects with a default of a max of 5 redirects

520

$request = $client->createRequest('GET', '/', ['allow_redirects' => true]);

521

522

// Strict redirects with a custom number of redirects

523

$request = $client->createRequest('GET', '/', [

524

'allow_redirects' => ['max' => 5, 'strict' => true]

]);

```

#### EntityBody

EntityBody interfaces and classes have been removed or moved to

531

`GuzzleHttp\Stream`. All classes and interfaces that once required

532

`GuzzleHttp\EntityBodyInterface` now require

533

`GuzzleHttp\Stream\StreamInterface`. Creating a new body for a request no

534

longer uses `GuzzleHttp\EntityBody::factory` but now uses

535

`GuzzleHttp\Stream\Stream::factory` or even better:

536

`GuzzleHttp\Stream\create()`.

537

538

- `Guzzle\Http\EntityBodyInterface` is now `GuzzleHttp\Stream\StreamInterface`

539

- `Guzzle\Http\EntityBody` is now `GuzzleHttp\Stream\Stream`

540

- `Guzzle\Http\CachingEntityBody` is now `GuzzleHttp\Stream\CachingStream`

541

- `Guzzle\Http\ReadLimitEntityBody` is now `GuzzleHttp\Stream\LimitStream`

542

- `Guzzle\Http\IoEmittyinEntityBody` has been removed.

543

544

#### Request lifecycle events

545

546

Requests previously submitted a large number of requests. The number of events

547

emitted over the lifecycle of a request has been significantly reduced to make

548

it easier to understand how to extend the behavior of a request. All events

549

emitted during the lifecycle of a request now emit a custom

550

`GuzzleHttp\Event\EventInterface` object that contains context providing

551

methods and a way in which to modify the transaction at that specific point in

552

time (e.g., intercept the request and set a response on the transaction).

553

554

- `request.before_send` has been renamed to `before` and now emits a

555

`GuzzleHttp\Event\BeforeEvent`

556

- `request.complete` has been renamed to `complete` and now emits a

557

`GuzzleHttp\Event\CompleteEvent`.

558

- `request.sent` has been removed. Use `complete`.

559

- `request.success` has been removed. Use `complete`.

560

- `error` is now an event that emits a `GuzzleHttp\Event\ErrorEvent`.

561

- `request.exception` has been removed. Use `error`.

562

- `request.receive.status_line` has been removed.

563

- `curl.callback.progress` has been removed. Use a custom `StreamInterface` to

564

maintain a status update.

565

- `curl.callback.write` has been removed. Use a custom `StreamInterface` to

566

intercept writes.

567

- `curl.callback.read` has been removed. Use a custom `StreamInterface` to

568

intercept reads.

569

570

`headers` is a new event that is emitted after the response headers of a

571

request have been received before the body of the response is downloaded. This

572

event emits a `GuzzleHttp\Event\HeadersEvent`.

573

574

You can intercept a request and inject a response using the `intercept()` event

575

of a `GuzzleHttp\Event\BeforeEvent`, `GuzzleHttp\Event\CompleteEvent`, and

576

`GuzzleHttp\Event\ErrorEvent` event.

577

578

See: https://docs.guzzlephp.org/en/latest/events.html

## Inflection

The `Guzzle\Inflection` namespace has been removed. This is not a core concern

of Guzzle.

## Iterator

The `Guzzle\Iterator` namespace has been removed.

588

589

- `Guzzle\Iterator\AppendIterator`, `Guzzle\Iterator\ChunkedIterator`, and

590

`Guzzle\Iterator\MethodProxyIterator` are nice, but not a core requirement of

591

Guzzle itself.

592

- `Guzzle\Iterator\FilterIterator` is no longer needed because an equivalent

593

class is shipped with PHP 5.4.

594

- `Guzzle\Iterator\MapIterator` is not really needed when using PHP 5.5 because

595

it's easier to just wrap an iterator in a generator that maps values.

596

597

For a replacement of these iterators, see https://github.com/nikic/iter

## Log

The LogPlugin has moved to https://github.com/guzzle/log-subscriber. The

602

`Guzzle\Log` namespace has been removed. Guzzle now relies on

603

`Psr\Log\LoggerInterface` for all logging. The MessageFormatter class has been

604

moved to `GuzzleHttp\Subscriber\Log\Formatter`.

## Parser

The `Guzzle\Parser` namespace has been removed. This was previously used to

609

make it possible to plug in custom parsers for cookies, messages, URI

610

templates, and URLs; however, this level of complexity is not needed in Guzzle

611

so it has been removed.

612

613

- Cookie: Cookie parsing logic has been moved to

614

`GuzzleHttp\Cookie\SetCookie::fromString`.

615

- Message: Message parsing logic for both requests and responses has been moved

616

to `GuzzleHttp\Message\MessageFactory::fromMessage`. Message parsing is only

617

used in debugging or deserializing messages, so it doesn't make sense for

618

Guzzle as a library to add this level of complexity to parsing messages.

619

- UriTemplate: URI template parsing has been moved to

620

`GuzzleHttp\UriTemplate`. The Guzzle library will automatically use the PECL

621

URI template library if it is installed.

622

- Url: URL parsing is now performed in `GuzzleHttp\Url::fromString` (previously

623

it was `Guzzle\Http\Url::factory()`). If custom URL parsing is necessary,

624

then developers are free to subclass `GuzzleHttp\Url`.

## Plugin

The `Guzzle\Plugin` namespace has been renamed to `GuzzleHttp\Subscriber`.

629

Several plugins are shipping with the core Guzzle library under this namespace.

630

631

- `GuzzleHttp\Subscriber\Cookie`: Replaces the old CookiePlugin. Cookie jar

632

code has moved to `GuzzleHttp\Cookie`.

633

- `GuzzleHttp\Subscriber\History`: Replaces the old HistoryPlugin.

634

- `GuzzleHttp\Subscriber\HttpError`: Throws errors when a bad HTTP response is

635

received.

636

- `GuzzleHttp\Subscriber\Mock`: Replaces the old MockPlugin.

637

- `GuzzleHttp\Subscriber\Prepare`: Prepares the body of a request just before

638

sending. This subscriber is attached to all requests by default.

639

- `GuzzleHttp\Subscriber\Redirect`: Replaces the RedirectPlugin.

640

641

The following plugins have been removed (third-parties are free to re-implement

642

these if needed):

643

644

- `GuzzleHttp\Plugin\Async` has been removed.

645

- `GuzzleHttp\Plugin\CurlAuth` has been removed.

646

- `GuzzleHttp\Plugin\ErrorResponse\ErrorResponsePlugin` has been removed. This

647

functionality should instead be implemented with event listeners that occur

648

after normal response parsing occurs in the guzzle/command package.

649

650

The following plugins are not part of the core Guzzle package, but are provided

651

in separate repositories:

652

653

- `Guzzle\Http\Plugin\BackoffPlugin` has been rewritten to be much simpler

654

to build custom retry policies using simple functions rather than various

655

chained classes. See: https://github.com/guzzle/retry-subscriber

656

- `Guzzle\Http\Plugin\Cache\CachePlugin` has moved to

657

https://github.com/guzzle/cache-subscriber

658

- `Guzzle\Http\Plugin\Log\LogPlugin` has moved to

659

https://github.com/guzzle/log-subscriber

660

- `Guzzle\Http\Plugin\Md5\Md5Plugin` has moved to

661

https://github.com/guzzle/message-integrity-subscriber

662

- `Guzzle\Http\Plugin\Mock\MockPlugin` has moved to

663

`GuzzleHttp\Subscriber\MockSubscriber`.

664

- `Guzzle\Http\Plugin\Oauth\OauthPlugin` has moved to

665

https://github.com/guzzle/oauth-subscriber

## Service

The service description layer of Guzzle has moved into two separate packages:

670

671

- https://github.com/guzzle/command Provides a high level abstraction over web

672

services by representing web service operations using commands.

673

- https://github.com/guzzle/guzzle-services Provides an implementation of

674

guzzle/command that provides request serialization and response parsing using

675

Guzzle service descriptions.

## Stream

Stream have moved to a separate package available at

680

https://github.com/guzzle/streams.

681

682

`Guzzle\Stream\StreamInterface` has been given a large update to cleanly take

683

on the responsibilities of `Guzzle\Http\EntityBody` and

684

`Guzzle\Http\EntityBodyInterface` now that they have been removed. The number

685

of methods implemented by the `StreamInterface` has been drastically reduced to

686

allow developers to more easily extend and decorate stream behavior.

687

688

## Removed methods from StreamInterface

689

690

- `getStream` and `setStream` have been removed to better encapsulate streams.

691

- `getMetadata` and `setMetadata` have been removed in favor of

692

`GuzzleHttp\Stream\MetadataStreamInterface`.

693

- `getWrapper`, `getWrapperData`, `getStreamType`, and `getUri` have all been

694

removed. This data is accessible when

695

using streams that implement `GuzzleHttp\Stream\MetadataStreamInterface`.

696

- `rewind` has been removed. Use `seek(0)` for a similar behavior.

## Renamed methods

- `detachStream` has been renamed to `detach`.

701

- `feof` has been renamed to `eof`.

702

- `ftell` has been renamed to `tell`.

703

- `readLine` has moved from an instance method to a static class method of

704

`GuzzleHttp\Stream\Stream`.

705

706

## Metadata streams

707

708

`GuzzleHttp\Stream\MetadataStreamInterface` has been added to denote streams

709

that contain additional metadata accessible via `getMetadata()`.

710

`GuzzleHttp\Stream\StreamInterface::getMetadata` and

711

`GuzzleHttp\Stream\StreamInterface::setMetadata` have been removed.

712

713

## StreamRequestFactory

714

715

The entire concept of the StreamRequestFactory has been removed. The way this

716

was used in Guzzle 3 broke the actual interface of sending streaming requests

717

(instead of getting back a Response, you got a StreamInterface). Streaming

718

PHP requests are now implemented through the `GuzzleHttp\Adapter\StreamAdapter`.

3.6 to 3.7

----------

### Deprecations

- You can now enable E_USER_DEPRECATED warnings to see if you are using any deprecated methods.:

726

727

```php

728

\Guzzle\Common\Version::$emitWarnings = true;

729

```

730

731

The following APIs and options have been marked as deprecated:

732

733

- Marked `Guzzle\Http\Message\Request::isResponseBodyRepeatable()` as deprecated. Use `$request->getResponseBody()->isRepeatable()` instead.

734

- Marked `Guzzle\Http\Message\Request::canCache()` as deprecated. Use `Guzzle\Plugin\Cache\DefaultCanCacheStrategy->canCacheRequest()` instead.

735

- Marked `Guzzle\Http\Message\Request::canCache()` as deprecated. Use `Guzzle\Plugin\Cache\DefaultCanCacheStrategy->canCacheRequest()` instead.

736

- Marked `Guzzle\Http\Message\Request::setIsRedirect()` as deprecated. Use the HistoryPlugin instead.

737

- Marked `Guzzle\Http\Message\Request::isRedirect()` as deprecated. Use the HistoryPlugin instead.

738

- Marked `Guzzle\Cache\CacheAdapterFactory::factory()` as deprecated

739

- Marked `Guzzle\Service\Client::enableMagicMethods()` as deprecated. Magic methods can no longer be disabled on a Guzzle\Service\Client.

740

- Marked `Guzzle\Parser\Url\UrlParser` as deprecated. Just use PHP's `parse_url()` and percent encode your UTF-8.

741

- Marked `Guzzle\Common\Collection::inject()` as deprecated.

742

- Marked `Guzzle\Plugin\CurlAuth\CurlAuthPlugin` as deprecated. Use

743

`$client->getConfig()->setPath('request.options/auth', array('user', 'pass', 'Basic|Digest|NTLM|Any'));` or

744

`$client->setDefaultOption('auth', array('user', 'pass', 'Basic|Digest|NTLM|Any'));`

745

746

3.7 introduces `request.options` as a parameter for a client configuration and as an optional argument to all creational

747

request methods. When paired with a client's configuration settings, these options allow you to specify default settings

748

for various aspects of a request. Because these options make other previous configuration options redundant, several

749

configuration options and methods of a client and AbstractCommand have been deprecated.

750

751

- Marked `Guzzle\Service\Client::getDefaultHeaders()` as deprecated. Use `$client->getDefaultOption('headers')`.

752

- Marked `Guzzle\Service\Client::setDefaultHeaders()` as deprecated. Use `$client->setDefaultOption('headers/{header_name}', 'value')`.

753

- Marked 'request.params' for `Guzzle\Http\Client` as deprecated. Use `$client->setDefaultOption('params/{param_name}', 'value')`

754

- Marked 'command.headers', 'command.response_body' and 'command.on_complete' as deprecated for AbstractCommand. These will work through Guzzle 4.0

755

756

$command = $client->getCommand('foo', array(

757

'command.headers' => array('Test' => '123'),

758

'command.response_body' => '/path/to/file'

759

));

760

761

// Should be changed to:

762

763

$command = $client->getCommand('foo', array(

764

'command.request_options' => array(

765

'headers' => array('Test' => '123'),

766

'save_as' => '/path/to/file'

)

));

### Interface changes

771

772

Additions and changes (you will need to update any implementations or subclasses you may have created):

773

774

- Added an `$options` argument to the end of the following methods of `Guzzle\Http\ClientInterface`:

775

createRequest, head, delete, put, patch, post, options, prepareRequest

776

- Added an `$options` argument to the end of `Guzzle\Http\Message\Request\RequestFactoryInterface::createRequest()`

777

- Added an `applyOptions()` method to `Guzzle\Http\Message\Request\RequestFactoryInterface`

778

- Changed `Guzzle\Http\ClientInterface::get($uri = null, $headers = null, $body = null)` to

779

`Guzzle\Http\ClientInterface::get($uri = null, $headers = null, $options = array())`. You can still pass in a

780

resource, string, or EntityBody into the $options parameter to specify the download location of the response.

781

- Changed `Guzzle\Common\Collection::__construct($data)` to no longer accepts a null value for `$data` but a

782

default `array()`

783

- Added `Guzzle\Stream\StreamInterface::isRepeatable`

784

- Made `Guzzle\Http\Client::expandTemplate` and `getUriTemplate` protected methods.

785

786

The following methods were removed from interfaces. All of these methods are still available in the concrete classes

787

that implement them, but you should update your code to use alternative methods:

788

789

- Removed `Guzzle\Http\ClientInterface::setDefaultHeaders(). Use

790

`$client->getConfig()->setPath('request.options/headers/{header_name}', 'value')`. or

791

`$client->getConfig()->setPath('request.options/headers', array('header_name' => 'value'))` or

792

`$client->setDefaultOption('headers/{header_name}', 'value')`. or

793

`$client->setDefaultOption('headers', array('header_name' => 'value'))`.

794

- Removed `Guzzle\Http\ClientInterface::getDefaultHeaders(). Use `$client->getConfig()->getPath('request.options/headers')`.

795

- Removed `Guzzle\Http\ClientInterface::expandTemplate()`. This is an implementation detail.

796

- Removed `Guzzle\Http\ClientInterface::setRequestFactory()`. This is an implementation detail.

797

- Removed `Guzzle\Http\ClientInterface::getCurlMulti()`. This is a very specific implementation detail.

798

- Removed `Guzzle\Http\Message\RequestInterface::canCache`. Use the CachePlugin.

799

- Removed `Guzzle\Http\Message\RequestInterface::setIsRedirect`. Use the HistoryPlugin.

800

- Removed `Guzzle\Http\Message\RequestInterface::isRedirect`. Use the HistoryPlugin.

801

802

### Cache plugin breaking changes

803

804

- CacheKeyProviderInterface and DefaultCacheKeyProvider are no longer used. All of this logic is handled in a

805

CacheStorageInterface. These two objects and interface will be removed in a future version.

806

- Always setting X-cache headers on cached responses

807

- Default cache TTLs are now handled by the CacheStorageInterface of a CachePlugin

808

- `CacheStorageInterface::cache($key, Response $response, $ttl = null)` has changed to `cache(RequestInterface

809

$request, Response $response);`

810

- `CacheStorageInterface::fetch($key)` has changed to `fetch(RequestInterface $request);`

811

- `CacheStorageInterface::delete($key)` has changed to `delete(RequestInterface $request);`

812

- Added `CacheStorageInterface::purge($url)`

813

- `DefaultRevalidation::__construct(CacheKeyProviderInterface $cacheKey, CacheStorageInterface $cache, CachePlugin

814

$plugin)` has changed to `DefaultRevalidation::__construct(CacheStorageInterface $cache,

815

CanCacheStrategyInterface $canCache = null)`

816

- Added `RevalidationInterface::shouldRevalidate(RequestInterface $request, Response $response)`

3.5 to 3.6

----------

* Mixed casing of headers are now forced to be a single consistent casing across all values for that header.

822

* Messages internally use a HeaderCollection object to delegate handling case-insensitive header resolution

823

* Removed the whole changedHeader() function system of messages because all header changes now go through addHeader().

824

For example, setHeader() first removes the header using unset on a HeaderCollection and then calls addHeader().

825

Keeping the Host header and URL host in sync is now handled by overriding the addHeader method in Request.

826

* Specific header implementations can be created for complex headers. When a message creates a header, it uses a

827

HeaderFactory which can map specific headers to specific header classes. There is now a Link header and

828

CacheControl header implementation.

829

* Moved getLinks() from Response to just be used on a Link header object.

830

831

If you previously relied on Guzzle\Http\Message\Header::raw(), then you will need to update your code to use the

832

HeaderInterface (e.g. toArray(), getAll(), etc.).

833

834

### Interface changes

835

836

* Removed from interface: Guzzle\Http\ClientInterface::setUriTemplate

837

* Removed from interface: Guzzle\Http\ClientInterface::setCurlMulti()

838

* Removed Guzzle\Http\Message\Request::receivedRequestHeader() and implemented this functionality in

839

Guzzle\Http\Curl\RequestMediator

840

* Removed the optional $asString parameter from MessageInterface::getHeader(). Just cast the header to a string.

841

* Removed the optional $tryChunkedTransfer option from Guzzle\Http\Message\EntityEnclosingRequestInterface

842

* Removed the $asObjects argument from Guzzle\Http\Message\MessageInterface::getHeaders()

843

844

### Removed deprecated functions

845

846

* Removed Guzzle\Parser\ParserRegister::get(). Use getParser()

847

* Removed Guzzle\Parser\ParserRegister::set(). Use registerParser().

### Deprecations

* The ability to case-insensitively search for header values

852

* Guzzle\Http\Message\Header::hasExactHeader

853

* Guzzle\Http\Message\Header::raw. Use getAll()

854

* Deprecated cache control specific methods on Guzzle\Http\Message\AbstractMessage. Use the CacheControl header object

instead.

### Other changes

* All response header helper functions return a string rather than mixing Header objects and strings inconsistently

860

* Removed cURL blacklist support. This is no longer necessary now that Expect, Accept, etc. are managed by Guzzle

861

directly via interfaces

862

* Removed the injecting of a request object onto a response object. The methods to get and set a request still exist

863

but are a no-op until removed.

864

* Most classes that used to require a `Guzzle\Service\Command\CommandInterface` typehint now request a

865

`Guzzle\Service\Command\ArrayCommandInterface`.

866

* Added `Guzzle\Http\Message\RequestInterface::startResponse()` to the RequestInterface to handle injecting a response

867

on a request while the request is still being transferred

868

* `Guzzle\Service\Command\CommandInterface` now extends from ToArrayInterface and ArrayAccess

3.3 to 3.4

----------

Base URLs of a client now follow the rules of https://datatracker.ietf.org/doc/html/rfc3986#section-5.2.2 when merging URLs.

3.2 to 3.3

----------

### Response::getEtag() quote stripping removed

879

880

`Guzzle\Http\Message\Response::getEtag()` no longer strips quotes around the ETag response header

881

882

### Removed `Guzzle\Http\Utils`

883

884

The `Guzzle\Http\Utils` class was removed. This class was only used for testing.

885

886

### Stream wrapper and type

887

888

`Guzzle\Stream\Stream::getWrapper()` and `Guzzle\Stream\Stream::getStreamType()` are no longer converted to lowercase.

889

890

### curl.emit_io became emit_io

891

892

Emitting IO events from a RequestMediator is now a parameter that must be set in a request's curl options using the

893

'emit_io' key. This was previously set under a request's parameters using 'curl.emit_io'

3.1 to 3.2

----------

### CurlMulti is no longer reused globally

899

900

Before 3.2, the same CurlMulti object was reused globally for each client. This can cause issue where plugins added

901

to a single client can pollute requests dispatched from other clients.

902

903

If you still wish to reuse the same CurlMulti object with each client, then you can add a listener to the

904

ServiceBuilder's `service_builder.create_client` event to inject a custom CurlMulti object into each client as it is

created.

```php

$multi = new Guzzle\Http\Curl\CurlMulti();

909

$builder = Guzzle\Service\Builder\ServiceBuilder::factory('/path/to/config.json');

910

$builder->addListener('service_builder.create_client', function ($event) use ($multi) {

911

$event['client']->setCurlMulti($multi);

}

});

```

### No default path

917

918

URLs no longer have a default path value of '/' if no path was specified.

Before:

```php

$request = $client->get('http://www.foo.com');

924

echo $request->getUrl();

925

// >> http://www.foo.com/

```

After:

```php

$request = $client->get('http://www.foo.com');

932

echo $request->getUrl();

933

// >> http://www.foo.com

934

```

935

936

### Less verbose BadResponseException

937

938

The exception message for `Guzzle\Http\Exception\BadResponseException` no longer contains the full HTTP request and

939

response information. You can, however, get access to the request and response object by calling `getRequest()` or

940

`getResponse()` on the exception object.

941

942

### Query parameter aggregation

943

944

Multi-valued query parameters are no longer aggregated using a callback function. `Guzzle\Http\Query` now has a

945

setAggregator() method that accepts a `Guzzle\Http\QueryAggregator\QueryAggregatorInterface` object. This object is

946

responsible for handling the aggregation of multi-valued query string variables into a flattened hash.

2.8 to 3.x

----------

### Guzzle\Service\Inspector

952

953

Change `\Guzzle\Service\Inspector::fromConfig` to `\Guzzle\Common\Collection::fromConfig`

**Before**

```php

use Guzzle\Service\Inspector;

959

960

class YourClient extends \Guzzle\Service\Client

961

{

962

public static function factory($config = array())

963

{

964

$default = array();

965

$required = array('base_url', 'username', 'api_key');

966

$config = Inspector::fromConfig($config, $default, $required);

967

968

$client = new self(

969

$config->get('base_url'),

970

$config->get('username'),

971

$config->get('api_key')

972

);

973

$client->setConfig($config);

974

975

$client->setDescription(ServiceDescription::factory(__DIR__ . DIRECTORY_SEPARATOR . 'client.json'));

return $client;

}

```

**After**

```php

use Guzzle\Common\Collection;

985

986

class YourClient extends \Guzzle\Service\Client

987

{

988

public static function factory($config = array())

989

{

990

$default = array();

991

$required = array('base_url', 'username', 'api_key');

992

$config = Collection::fromConfig($config, $default, $required);

993

994

$client = new self(

995

$config->get('base_url'),

996

$config->get('username'),

997

$config->get('api_key')

998

);

999

$client->setConfig($config);

1000

1001

$client->setDescription(ServiceDescription::factory(__DIR__ . DIRECTORY_SEPARATOR . 'client.json'));

return $client;

}

```

### Convert XML Service Descriptions to JSON

**Before**

```xml

<?xml version="1.0" encoding="UTF-8"?>

<client>

<commands>

<command name="list_groups" method="GET" uri="groups.json">

1017

<doc>Get a list of groups</doc>

1018

</command>

1019

<command name="search_groups" method="GET" uri='search.json?query="{{query}} type:group"'>

1020

<doc>Uses a search query to get a list of groups</doc>

1021

<param name="query" type="string" required="true" />

1022

</command>

1023

<command name="create_group" method="POST" uri="groups.json">

1024

<doc>Create a group</doc>

1025

<param name="data" type="array" location="body" filters="json_encode" doc="Group JSON"/>

1026

<param name="Content-Type" location="header" static="application/json"/>

1027

</command>

1028

<command name="delete_group" method="DELETE" uri="groups/{{id}}.json">

1029

<doc>Delete a group by ID</doc>

1030

<param name="id" type="integer" required="true"/>

1031

</command>

1032

<command name="get_group" method="GET" uri="groups/{{id}}.json">

1033

<param name="id" type="integer" required="true"/>

1034

</command>

1035

<command name="update_group" method="PUT" uri="groups/{{id}}.json">

1036

<doc>Update a group</doc>

1037

<param name="id" type="integer" required="true"/>

1038

<param name="data" type="array" location="body" filters="json_encode" doc="Group JSON"/>

1039

<param name="Content-Type" location="header" static="application/json"/>

</command>

</commands>

</client>

```

**After**

```json

{

"name": "Zendesk REST API v2",

1050

"apiVersion": "2012-12-31",

1051

"description":"Provides access to Zendesk views, groups, tickets, ticket fields, and users",

1052

"operations": {

1053

"list_groups": {

1054

"httpMethod":"GET",

1055

"uri": "groups.json",

1056

"summary": "Get a list of groups"

1057

},

1058

"search_groups":{

1059

"httpMethod":"GET",

1060

"uri": "search.json?query=\"{query} type:group\"",

1061

"summary": "Uses a search query to get a list of groups",

"parameters":{

"query":{

"location": "uri",

"description":"Zendesk Search Query",

"type": "string",

"required": true

}

}

},

"create_group": {

"httpMethod":"POST",

1073

"uri": "groups.json",

1074

"summary": "Create a group",

"parameters":{

"data": {

"type": "array",

"location": "body",

1079

"description":"Group JSON",

1080

"filters": "json_encode",

"required": true

},

"Content-Type":{

"type": "string",

"location":"header",

1086

"static": "application/json"

}

}

},

"delete_group": {

"httpMethod":"DELETE",

1092

"uri": "groups/{id}.json",

1093

"summary": "Delete a group",

"parameters":{

"id":{

"location": "uri",

"description":"Group to delete by ID",

"type": "integer",

"required": true

}

}

},

"get_group": {

"httpMethod":"GET",

1105

"uri": "groups/{id}.json",

1106

"summary": "Get a ticket",

"parameters":{

"id":{

"location": "uri",

"description":"Group to get by ID",

"type": "integer",

"required": true

}

}

},

"update_group": {

"httpMethod":"PUT",

1118

"uri": "groups/{id}.json",

1119

"summary": "Update a group",

"parameters":{

"id": {

"location": "uri",

"description":"Group to update by ID",

"type": "integer",

"required": true

},

"data": {

"type": "array",

"location": "body",

1130

"description":"Group JSON",

1131

"filters": "json_encode",

"required": true

},

"Content-Type":{

"type": "string",

"location":"header",

1137

"static": "application/json"

}

}

}

}

```

### Guzzle\Service\Description\ServiceDescription

1145

1146

Commands are now called Operations

**Before**

```php

use Guzzle\Service\Description\ServiceDescription;

1152

1153

$sd = new ServiceDescription();

1154

$sd->getCommands(); // @returns ApiCommandInterface[]

1155

$sd->hasCommand($name);

1156

$sd->getCommand($name); // @returns ApiCommandInterface|null

1157

$sd->addCommand($command); // @param ApiCommandInterface $command

```

**After**

```php

use Guzzle\Service\Description\ServiceDescription;

1164

1165

$sd = new ServiceDescription();

1166

$sd->getOperations(); // @returns OperationInterface[]

1167

$sd->hasOperation($name);

1168

$sd->getOperation($name); // @returns OperationInterface|null

1169

$sd->addOperation($operation); // @param OperationInterface $operation

1170

```

1171

1172

### Guzzle\Common\Inflection\Inflector

1173

1174

Namespace is now `Guzzle\Inflection\Inflector`

1175

1176

### Guzzle\Http\Plugin

1177

1178

Namespace is now `Guzzle\Plugin`. Many other changes occur within this namespace and are detailed in their own sections below.

1179

1180

### Guzzle\Http\Plugin\LogPlugin and Guzzle\Common\Log

1181

1182

Now `Guzzle\Plugin\Log\LogPlugin` and `Guzzle\Log` respectively.

**Before**

```php

use Guzzle\Common\Log\ClosureLogAdapter;

1188

use Guzzle\Http\Plugin\LogPlugin;

1189

1190

/** @var \Guzzle\Http\Client */

1191

$client;

1192

1193

// $verbosity is an integer indicating desired message verbosity level

1194

$client->addSubscriber(new LogPlugin(new ClosureLogAdapter(function($m) { echo $m; }, $verbosity = LogPlugin::LOG_VERBOSE);

```

**After**

```php

use Guzzle\Log\ClosureLogAdapter;

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use Guzzle\Log\MessageFormatter;

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use Guzzle\Plugin\Log\LogPlugin;

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/** @var \Guzzle\Http\Client */

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$client;

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// $format is a string indicating desired message format -- @see MessageFormatter

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$client->addSubscriber(new LogPlugin(new ClosureLogAdapter(function($m) { echo $m; }, $format = MessageFormatter::DEBUG_FORMAT);

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```

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### Guzzle\Http\Plugin\CurlAuthPlugin

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Now `Guzzle\Plugin\CurlAuth\CurlAuthPlugin`.

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### Guzzle\Http\Plugin\ExponentialBackoffPlugin

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Now `Guzzle\Plugin\Backoff\BackoffPlugin`, and other changes.

**Before**

```php

use Guzzle\Http\Plugin\ExponentialBackoffPlugin;

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$backoffPlugin = new ExponentialBackoffPlugin($maxRetries, array_merge(

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ExponentialBackoffPlugin::getDefaultFailureCodes(), array(429)

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));

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$client->addSubscriber($backoffPlugin);

```

**After**

```php

use Guzzle\Plugin\Backoff\BackoffPlugin;

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use Guzzle\Plugin\Backoff\HttpBackoffStrategy;

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// Use convenient factory method instead -- see implementation for ideas of what

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// you can do with chaining backoff strategies

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$backoffPlugin = BackoffPlugin::getExponentialBackoff($maxRetries, array_merge(

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HttpBackoffStrategy::getDefaultFailureCodes(), array(429)

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));

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$client->addSubscriber($backoffPlugin);

```

### Known Issues

#### [BUG] Accept-Encoding header behavior changed unintentionally.

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(See #217) (Fixed in 09daeb8c666fb44499a0646d655a8ae36456575e)

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In version 2.8 setting the `Accept-Encoding` header would set the CURLOPT_ENCODING option, which permitted cURL to

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properly handle gzip/deflate compressed responses from the server. In versions affected by this bug this does not happen.

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See issue #217 for a workaround, or use a version containing the fix.

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