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https://github.com/amphp/websocket-client
Async WebSocket client for PHP based on Amp.
https://github.com/amphp/websocket-client
amphp async php websockets
Last synced: 3 days ago
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Async WebSocket client for PHP based on Amp.
- Host: GitHub
- URL: https://github.com/amphp/websocket-client
- Owner: amphp
- License: mit
- Created: 2015-12-16T16:04:47.000Z (about 9 years ago)
- Default Branch: 2.x
- Last Pushed: 2024-12-07T02:07:40.000Z (about 2 months ago)
- Last Synced: 2025-01-24T19:07:10.394Z (10 days ago)
- Topics: amphp, async, php, websockets
- Language: PHP
- Homepage: https://amphp.org/websocket-client
- Size: 274 KB
- Stars: 148
- Watchers: 18
- Forks: 18
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
README
# websocket-client
AMPHP is a collection of event-driven libraries for PHP designed with fibers and concurrency in mind.
`amphp/websocket-client` provides an asynchronous WebSocket client for PHP based on Amp.
Websockets are full-duplex communication channels, which are mostly used for realtime communication where the HTTP request / response cycle has too much overhead.
They're also used if the server should be able to push data to the client without an explicit request.
There are various use cases for a WebSocket client in PHP, such as consuming realtime APIs, writing tests for a WebSocket server, or controlling web browsers via their remote debugging APIs, which are based on WebSockets.
## Installation
This package can be installed as a [Composer](https://getcomposer.org/) dependency.
```
composer require amphp/websocket-client
```
## Requirements
- PHP 8.1+
## Usage
### Connecting
You can create new WebSocket connections using `Amp\Websocket\connect()` or calling `connect()` on an instance of `WebsocketConnector`.
The `connect()` function accepts a string, PSR-7 `UriInterface` instance, or a `WebsocketHandshake` as first argument. URIs must use the `ws` or `wss` (WebSocket over TLS) scheme.
Custom connection parameters can be specified by passing a `WebsocketHandshake` object instead of a string as first argument, which can also be used to pass additional headers with the initial handshake. The second argument is an optional `Cancellation` which may be used to cancel the connection attempt.
```php
connect($handshake);
```
### Sending Data
WebSocket messages can be sent using the `Connection::sendText()` and `Connection::sendBinary()` methods.
Text messages sent with `Connection::sendText()` must be valid UTF-8.
Binary messages send with `Connection::sendBinary()` can be arbitrary data.
Both methods return as soon as the message has been fully written to the send buffer. This does not mean that the message is guaranteed to have been received by the other party.
### Receiving Data
WebSocket messages can be received using the `Connection::receive()` method. `Connection::receive()` returns a `WebsocketMessage` instance once the client has started to receive a message. This allows streaming WebSocket messages, which might be pretty large. In practice, most messages are rather small, and it's fine buffering them completely by either calling `WebsocketMessage::buffer()` or casting the object to a string. The maximum length of a message is defined by the option given to the `WebsocketParserFactory` instance provided to the `WebsocketConnectionFactory` (10 MiB by default).
```php
use Amp\Websocket\Client\WebsocketHandshake;
use Amp\Websocket\WebsocketCloseCode;
use function Amp\Websocket\Client\connect;
// Connects to the websocket endpoint at libwebsockets.org
// which sends a message every 50ms.
$handshake = (new WebsocketHandshake('wss://libwebsockets.org'))
->withHeader('Sec-WebSocket-Protocol', 'dumb-increment-protocol');
$connection = connect($handshake);
foreach ($connection as $message) {
$payload = $message->buffer();
printf("Received: %s\n", $payload);
if ($payload === '100') {
$connection->close();
break;
}
}
```
## Versioning
`amphp/websocket-client` follows the [semver](http://semver.org/) semantic versioning specification like all other `amphp` packages.
## Security
If you discover any security related issues, please use the private security issue reporter instead of using the public issue tracker.
## License
The MIT License (MIT). Please see [`LICENSE`](./LICENSE) for more information.