Method

ClientRequest::flush

Commit the head (an implicit 200) and put it on the wire, with nothing buffered.

Description#

public ClientRequest::flush(): void

Examples#

Example 1Put the head on the wire before the work

use Swerve\ClientRequest;
use Swerve\RequestHandler;

$app = new RequestHandler(function (ClientRequest $request) {
    $request->sendResponseHeaders(200, ['content-type' => 'text/plain']);
    $request->flush();                    // the client sees the head now, before any work is done

    foreach (['parsing', 'indexing', 'done'] as $step) {
        phasync::sleep(0.05);              // the work
        $request->write("$step\n");       // each write is a chunk on the wire
    }
});

if (debug_backtrace()) {
    return $app;   // swerve loads this file: it is the application's swerve.php
}

// Run directly: serve the application with swerve, and send it requests
require __DIR__ . '/../serve.php';
serve(__FILE__, ["GET /rebuild HTTP/1.1\r\nHost: example\r\n\r\n"]);

Output

HTTP/1.1 200 OK
content-type: text/plain
Server: Swerve
Transfer-Encoding: chunked
Connection: close

8
parsing

9
indexing

5
done

0