protected function readNextChunk() : \Generator
{
if ($this->expectContinue) {
$expect = $this->expectContinue;
$this->expectContinue = null;
$this->continued = true;
(yield $expect->write(Http::getStatusLine(Http::CONTINUE) . "\r\n"));
}
return (yield $this->stream->read($this->bufferSize));
}
/**
* {@inheritdoc}
*/
public function upgradeConnection(HttpDriverContext $context, SocketStream $socket, HttpRequest $request, callable $action) : \Generator
{
if ($this->isPrefaceRequest($request)) {
return yield from $this->upgradeConnectionDirect($context, $socket, $request, $action);
}
$settings = @\base64_decode($request->getHeaderLine('HTTP2-Settings'));
if ($settings === false) {
throw new StatusException(Http::CODE_BAD_REQUEST, 'HTTP/2 settings are not properly encoded');
}
// Discard request body before switching to HTTP/2.
(yield $request->getBody()->discard());
if ($this->logger) {
$this->logger->info('{ip} "{method} {target} HTTP/{protocol}" {status} {size}', ['ip' => $request->getClientAddress(), 'method' => $request->getMethod(), 'target' => $request->getRequestTarget(), 'protocol' => $request->getProtocolVersion(), 'status' => Http::SWITCHING_PROTOCOLS, 'size' => '-']);
}
$buffer = Http::getStatusLine(Http::SWITCHING_PROTOCOLS, $request->getProtocolVersion()) . "\r\n";
$buffer .= "Connection: upgrade\r\n";
$buffer .= "Upgrade: h2c\r\n";
(yield $socket->write($buffer . "\r\n"));
$conn = new Connection($socket, new HPack($this->hpackContext), $this->logger);
(yield $conn->performServerHandshake(new Frame(Frame::SETTINGS, $settings)));
if ($this->logger) {
$this->logger->info('HTTP/{protocol} connection from {peer} upgraded to HTTP/2', ['protocol' => $request->getProtocolVersion(), 'peer' => $socket->getRemoteAddress()]);
}
$remotePeer = $socket->getRemoteAddress();
try {
while (null !== ($received = (yield $conn->nextRequest($context)))) {
new Coroutine($this->processRequest($conn, $action, ...$received), true);
}
} finally {
try {
$conn->shutdown();
} finally {
if ($this->logger) {
$this->logger->debug('Closed HTTP/2 connection to {peer}', ['peer' => $remotePeer]);
}
}
}
}