Applications are invoked as soon as headers are received and before
entity body data is parsed. The $request->body instance allows
applications to await receipt of the full body (buffer) or stream
it in chunks as it arrives.
Buffering Example:
$responder = function(Request $request, Response $response) {
$bufferedBody = yield $request->getBody();
$response->send("Echoing back the request body: {$bufferedBody}");
};
Streaming Example:
$responder = function(Request $request, Response $response) {
$payload = "";
$body = $request->getBody()
while (yield $body->valid()) {
$payload .= $body->consume();
}
$response->send("Echoing back the request body: {$payload}");
};
public function __construct(Promise $promise, Promise $metadata)
{
parent::__construct($promise);
$this->metadata = $metadata;
$this->valid = $this->valid();
}
