README

Implementation of an Async HTTP client using CURL.

*** NOTE *** This is a work in progress, Not 100% compatible replacement for ReactPHP Browser

Why not use package react/http Browser?

Using cURL allows for HTTP/2+3, connection pooling (with keep-alive), and the extraction of timing data for the requests. This functionality is not available though the ReactPHP Browser implementation

Requirements

The package is compatible with PHP 8.2+ and requires the cURL extension and react/event-loop library.

Installation

You can add the library as project dependency using Composer:

composer require edgetelemetrics/reactphp-http-browser-curl

Examples

See /examples directory. Examples based on examples from reactphp/http under MIT License

Timing

Request timing values are returned in the PSR7 Response object headers under the key Server-Timing

Configuration

The Browser can be configured with standard CURLOPT_* parameters given via the constructor.

$browser = new Browser([
 CURLOPT_TIMEOUT => 20,
 CURLOPT_DOH_URL, 'https://1.1.1.1/dns-query',
 CURLOPT_DNS_SERVERS => '1.1.1.1',
]);

Connection Reuse

Each instance of Browser shares a Connection pool, DNS cache, SSL cache, and Cookie Jar. An example of this can be seen in /examples/connection_pooling.php script.

Connection Metadata

Connection Timing

The request/response timing is provided though the header 'ServerTiming' in the Response object.

Each timing point is defined as <timing point>;dur=<duration in second>

• namelookup_time
• connect_time
• appconnect_time
• pretransfer_time
• redirect_time
• starttransfer_time
• total_time

Connection Details

Additional request/response metadata is provided though the header 'X-Connection' in the Response object.

Key/Value pairs are as follows:

• effective_url=<final url after any redirects>
• connection;count=<number of connections opened during the request, 0 if existing connection reused>
• redirect;count=<number of redirects followed>
• upload;size=<bytes sent in request(headers+body) including redirects>;speed=<overall bytes per second upload>
• download;size=<bytes received in response(headers+body) including redirects>;speed=<overall bytes per second download>

License

MIT, see LICENSE file.

Contributing

Bug reports (and small patches) can be submitted via the issue tracker. Forking the repository and submitting a Pull Request is preferred for substantial patches.