/**
* Parse the next HTTP response from the given stream.
*
* @param ReadableStream $stream
* @param string $line HTTP response line (mighty already be received while checking for 100 continue).
* @param bool $dropBody Drop response body (needed when the response is caused by a HEAD request).
* @return HttpResponse
*
* @throws StreamClosedException When no HTTP response line could be parsed.
*/
public function parseResponse(ReadableStream $stream, string $line = null, bool $dropBody = false) : \Generator
{
if ($line === null) {
$i = 0;
do {
if ($i++ > 3 || null === ($line = (yield $stream->readLine()))) {
throw new StreamClosedException('Stream closed before HTTP response line was read');
}
} while ($line === '');
}
$m = null;
if (!\preg_match("'^HTTP/(1\\.[01])\\s+([1-5][0-9]{2})(.*)\$'i", \trim($line), $m)) {
throw new StreamClosedException('Invalid HTTP response line received');
}
$response = new HttpResponse();
$response = $response->withProtocolVersion($m[1]);
$response = $response->withStatus((int) $m[2], \trim($m[3]));
$response = (yield from $this->parseHeaders($stream, $response));
if ($dropBody || Http::isResponseWithoutBody($response->getStatusCode())) {
$body = new StringBody();
if (!$dropBody) {
$response = $response->withHeader('Content-Length', '0');
}
} else {
$body = Body::fromMessage($stream, $response);
}
static $remove = ['TE', 'Trailer'];
foreach ($remove as $name) {
$response = $response->withoutHeader($name);
}
return $response->withBody($body);
}
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));
}
public function __debugInfo() : array
{
$headers = [];
foreach ($this->getHeaders() as $k => $header) {
foreach ($header as $v) {
$headers[] = \sprintf('%s: %s', Http::normalizeHeaderName($k), $v);
}
}
\sort($headers, SORT_NATURAL);
return ['protocol' => \sprintf('HTTP/%s', $this->protocolVersion), 'method' => $this->method, 'uri' => (string) $this->uri, 'target' => $this->getRequestTarget(), 'headers' => $headers, 'addresses' => $this->addresses, 'body' => $this->body, 'attributes' => \array_keys($this->attributes)];
}
public function createUnsupportedMediaTypeResponse() : HttpResponse
{
$response = new HttpResponse(Http::UNSUPPORTED_MEDIA_TYPE);
$accepted = [];
foreach ($this->matches as $match) {
foreach ($match->handler->getConsumedMediaTypes() as $type) {
$accepted[(string) $type] = true;
}
}
if ($accepted) {
\ksort($accepted);
$response = $response->withHeader('Content-Type', 'application/json;charset="utf-8"');
$response = $response->withBody(new StringBody(\json_encode(['status' => Http::UNSUPPORTED_MEDIA_TYPE, 'reason' => Http::getReason(Http::UNSUPPORTED_MEDIA_TYPE), 'acceptable' => \array_keys($accepted)], \JSON_UNESCAPED_SLASHES | \JSON_HEX_AMP | \JSON_HEX_APOS | \JSON_HEX_QUOT | \JSON_HEX_TAG)));
}
return $response;
}
/**
* Serialize HTTP headers to be sent in an FCGI record.
*
* @param HttpResponse $response
* @param int $size
* @return string
*/
protected function serializeHeaders(HttpResponse $response, int $size = null) : string
{
$reason = \trim($response->getReasonPhrase());
if ('' === $reason) {
$reason = Http::getReason($response->getStatusCode());
}
$buffer = \sprintf("Status: %03u%s\r\n", $response->getStatusCode(), \rtrim(' ' . $reason));
if ($size !== null) {
$buffer .= "Content-Length: {$size}\r\n";
}
foreach ($response->getHeaders() as $name => $header) {
$name = Http::normalizeHeaderName($name);
foreach ($header as $value) {
$buffer .= $name . ': ' . $value . "\r\n";
}
}
return $buffer;
}
/**
* {@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]);
}
}
}
}
/**
* Invoke next HTTP middleware or the decorated action.
*
* @param HttpRequest $request
* @return HttpResponse
*
* @throws \RuntimeException When the middleware / action does not return / resolve into an HTTP response.
*/
public function __invoke(HttpRequest $request) : \Generator
{
try {
if (isset($this->middlewares[$this->index])) {
$response = ($this->middlewares[$this->index++]->callback)($request, $this);
} else {
$response = ($this->target)($request);
}
if ($response instanceof \Generator) {
$response = (yield from $response);
}
if (!$response instanceof HttpResponse) {
throw new \RuntimeException(\sprintf('Middleware must return an HTTP response, given %s', \is_object($response) ? \get_class($response) : \gettype($response)));
}
} catch (\Throwable $e) {
$response = Http::respondToError($e, $this->logger);
}
return $response;
}
protected function serializeHeaders(HttpRequest $request, int $size = null)
{
if (\in_array('upgrade', $request->getHeaderTokenValues('Connection'))) {
$request = $request->withHeader('Connection', 'upgrade');
} else {
$request = $request->withHeader('Connection', $this->keepAlive ? 'keep-alive' : 'close');
}
$buffer = \sprintf("%s %s HTTP/%s\r\n", $request->getMethod(), $request->getRequestTarget(), $request->getProtocolVersion());
if ($this->keepAlive) {
$buffer .= \sprintf("Keep-Alive: timeout=%u\r\n", $this->pool->getMaxLifetime());
}
if ($size === null) {
$buffer .= "Transfer-Encoding: chunked\r\n";
} else {
$buffer .= "Content-Length: {$size}\r\n";
}
foreach ($request->getHeaders() as $name => $header) {
$name = Http::normalizeHeaderName($name);
foreach ($header as $value) {
$buffer .= $name . ': ' . $value . "\r\n";
}
}
return $buffer;
}
/**
* Serialize HTTP response headers into a string.
*/
protected function serializeHeaders(HttpResponse $response, bool &$close, int $size = null, bool $nobody = false, bool $deferred = false) : string
{
$reason = \trim($response->getReasonPhrase());
if ($reason === '') {
$reason = \trim(Http::getReason($response->getStatusCode()));
}
if (!$response->hasHeader('Connection')) {
$response = $response->withHeader('Connection', $close ? 'close' : 'keep-alive');
}
if (!$close) {
$response = $response->withHeader('Keep-Alive', '30');
}
$buffer = \sprintf("HTTP/%s %u%s\r\n", $response->getProtocolVersion(), $response->getStatusCode(), \rtrim(' ' . $reason));
if (!$nobody) {
if ($deferred) {
$close = true;
} else {
if ((double) $response->getProtocolVersion() > 1) {
if ($size === null) {
$buffer .= "Transfer-Encoding: chunked\r\n";
} else {
$buffer .= "Content-Length: {$size}\r\n";
}
} elseif ($size !== null) {
$buffer .= "Content-Length: {$size}\r\n";
} else {
$close = true;
}
}
}
foreach ($response->getHeaders() as $name => $header) {
$name = Http::normalizeHeaderName($name);
foreach ($header as $value) {
$buffer .= $name . ': ' . $value . "\r\n";
}
}
return $buffer;
}
/**
* Check if the given response payload should be compressed.
*
* @param HttpRequest $request
* @param HttpResponse $response
* @return bool
*/
protected function isCompressable(HttpRequest $request, HttpResponse $response) : bool
{
if ($request->getMethod() === Http::HEAD) {
return false;
}
if ($response->getBody() instanceof DeferredBody || Http::isResponseWithoutBody($response->getStatusCode())) {
return false;
}
if ($response->hasHeader('Content-Encoding') || !$response->hasHeader('Content-Type')) {
return false;
}
try {
$media = $response->getContentType()->getMediaType();
} catch (InvalidMediaTypeException $e) {
return false;
}
if (isset($this->types[(string) $media])) {
return true;
}
foreach ($media->getSubTypes() as $sub) {
if (isset($this->subTypes[$sub])) {
return true;
}
}
return false;
}
