/**
* Read next chunk from temp file.
*
* Fall back to reading from buffered source stream if contents of the temp file have been read.
*/
protected function readNextChunk() : \Generator
{
$chunk = (yield $this->stream->readBuffer($this->bufferSize));
if ($chunk === null) {
$chunk = (yield $this->source->readBuffer($this->bufferSize));
if ($chunk === null) {
$this->body->computeSize();
$this->source->close();
} else {
$this->body->incrementOffset((yield $this->stream->write($chunk)));
}
$chunk = (yield $this->stream->readBuffer($this->bufferSize));
}
return $chunk;
}
protected function sendRequest(SocketStream $socket, HttpRequest $request, int &$sent) : \Generator
{
$request = $this->normalizeRequest($request);
$body = $request->getBody();
$size = (yield $body->getSize());
$sendfile = false;
if ($body instanceof FileBody && $socket->isSendfileSupported()) {
$sendfile = true;
$chunk = $size ? '' : null;
} else {
if ($request->getProtocolVersion() == '1.0' && $size === null) {
if (!$body->isCached()) {
$body = new BufferedBody((yield $body->getReadableStream()));
}
(yield $body->discard());
$size = (yield $body->getSize());
}
$bodyStream = (yield $body->getReadableStream());
$clen = $size === null ? 4089 : 4096;
$chunk = (yield $bodyStream->readBuffer($clen));
$len = \strlen($chunk ?? '');
if ($chunk === null) {
$size = 0;
} elseif ($len < $clen) {
$size = $len;
}
}
$buffer = $this->serializeHeaders($request, $size);
$expect = false;
if ($this->expectContinue && $chunk !== null && $request->getProtocolVersion() == '1.1') {
$expect = true;
$buffer .= "Expect: 100-continue\r\n";
}
(yield $socket->write($buffer . "\r\n"));
(yield $socket->flush());
if ($expect) {
if (!\preg_match("'^HTTP/1\\.1\\s+100(?:\$|\\s)'i", $line = (yield $socket->readLine()))) {
try {
return $line;
} finally {
if (isset($bodyStream)) {
$bodyStream->close();
}
}
}
}
if ($sendfile) {
if ($size) {
$sent += (yield LoopConfig::currentFilesystem()->sendfile($body->getFile(), $socket->getSocket(), $size));
}
} elseif ($size === null) {
$sent += (yield $socket->write(\dechex($len) . "\r\n" . $chunk . "\r\n"));
if ($len === $clen) {
// Align each chunk with length and line breaks to fit into 4 KB payload.
$sent += (yield new CopyBytes($bodyStream, $socket, true, null, 4089, function (string $chunk) {
return \dechex(\strlen($chunk)) . "\r\n" . $chunk . "\r\n";
}));
}
(yield $socket->write("0\r\n\r\n"));
} elseif ($size > 0) {
$sent += (yield $socket->write($chunk));
if ($len === $clen) {
$sent += (yield new CopyBytes($bodyStream, $socket, true, $size - $len));
}
}
(yield $socket->flush());
}