/**
* 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);
}
/**
* Coroutine that sends the given HTTP response to the connected client.
*/
protected function sendResponse(SocketStream $socket, HttpRequest $request, HttpResponse $response, bool $close) : \Generator
{
// Discard request body in another coroutine.
$request->getBody()->discard();
$response = $this->normalizeResponse($request, $response);
$http11 = $response->getProtocolVersion() == '1.1';
$head = $request->getMethod() === Http::HEAD;
$nobody = $head || Http::isResponseWithoutBody($response->getStatusCode());
$sendfile = false;
$body = $response->getBody();
if ($body instanceof DeferredBody) {
return yield from $this->sendDeferredResponse($socket, $request, $response, $nobody, $close);
}
$size = (yield $body->getSize());
if (!$nobody) {
if ($body instanceof FileBody && $socket->isSendfileSupported()) {
$sendfile = true;
} else {
$bodyStream = (yield $body->getReadableStream());
if ($nobody || $size === 0) {
$chunk = null;
$size = 0;
$len = 0;
} else {
$clen = $size === null ? 4089 : 4096;
$chunk = (yield $bodyStream->readBuffer($clen));
$len = \strlen($chunk ?? '');
}
if ($chunk === null) {
$size = 0;
} elseif ($len < $clen) {
$size = $len;
}
}
}
(yield $socket->write($this->serializeHeaders($response, $close, $size, $nobody) . "\r\n"));
(yield $socket->flush());
$sent = 0;
try {
if (!$nobody) {
if ($sendfile) {
if ($size) {
$sent += (yield LoopConfig::currentFilesystem()->sendfile($body->getFile(), $socket->getSocket(), $size));
}
} elseif ($http11 && $size === null) {
$sent += (yield $socket->write(\dechex($len) . "\r\n" . $chunk . "\r\n"));
if ($len === $clen) {
$sent += (yield new CopyBytes($bodyStream, $socket, false, null, 4089, function (string $chunk) {
return \dechex(\strlen($chunk)) . "\r\n" . $chunk . "\r\n";
}));
}
$sent += (yield $socket->write("0\r\n\r\n"));
} elseif ($chunk !== null) {
$sent += (yield $socket->write($chunk));
if ($len === $clen) {
$sent += (yield new CopyBytes($bodyStream, $socket, false, $size === null ? null : $size - $len));
}
}
(yield $socket->flush());
}
} finally {
if (isset($bodyStream)) {
$bodyStream->close();
}
}
if ($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' => $response->getStatusCode(), 'size' => $sent ?: '-']);
}
return !$close;
}
/**
* Send the given HTTP response using FCGI records.
*
* @param HttpRequest $request
* @param HttpResponse $response
*/
public function sendResponse(HttpRequest $request, HttpResponse $response) : \Generator
{
$response = $this->normalizeResponse($request, $response);
$body = $response->getBody();
$size = (yield $body->getSize());
$head = $request->getMethod() === Http::HEAD;
$nobody = $head || Http::isResponseWithoutBody($response->getStatusCode());
$buffer = $this->serializeHeaders($response, $nobody ? null : $size);
(yield $this->conn->sendRecord(new Record(Record::FCGI_VERSION_1, Record::FCGI_STDOUT, $this->id, $buffer . "\r\n")));
if ($body instanceof DeferredBody) {
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' => $response->getStatusCode(), 'size' => '-']);
}
if ($nobody) {
$body->close(false);
} else {
$task = new Coroutine($this->sendDeferredResponse($request, $body), true);
$this->pending->attach($task);
$task->when(function () use($task) {
if ($this->pending->contains($task)) {
$this->pending->detach($task);
}
});
(yield $task);
}
} else {
$sent = 0;
if (!$nobody) {
$bodyStream = (yield $body->getReadableStream());
try {
$channel = $bodyStream->channel(4096, $size);
while (null !== ($chunk = (yield $channel->receive()))) {
$sent += (yield $this->conn->sendRecord(new Record(Record::FCGI_VERSION_1, Record::FCGI_STDOUT, $this->id, $chunk)));
}
} finally {
$bodyStream->close();
}
}
if ($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' => $response->getStatusCode(), 'size' => $sent ?: '-']);
}
}
(yield $this->conn->sendRecord(new Record(Record::FCGI_VERSION_1, Record::FCGI_STDOUT, $this->id, '')));
(yield $this->conn->sendRecord(new Record(Record::FCGI_VERSION_1, Record::FCGI_STDERR, $this->id, '')));
$this->conn->closeHandler($this->id);
}
/**
* 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;
}
