private function connect()
{
// If we're in the process of connecting already return that same promise
if ($this->connectPromisor) {
return $this->connectPromisor->promise();
}
// If a read watcher exists we know we're already connected
if ($this->readWatcher) {
return new Success($this);
}
$this->connectPromisor = new Deferred();
$socketPromise = connect($this->uri, ["timeout" => $this->timeout]);
$onWrite = function ($watcherId) {
if ($this->outputBufferLength === 0) {
disable($watcherId);
return;
}
$bytes = @fwrite($this->socket, $this->outputBuffer);
if ($bytes === 0) {
$this->onError(new ConnectException("Connection went away (write)", $code = 1));
} else {
$this->outputBuffer = (string) substr($this->outputBuffer, $bytes);
$this->outputBufferLength -= $bytes;
}
};
$socketPromise->when(function ($error, $socket) use($onWrite) {
$connectPromisor = $this->connectPromisor;
$this->connectPromisor = null;
if ($error) {
$connectPromisor->fail(new ConnectException("Connection attempt failed", $code = 0, $error));
return;
}
$this->socket = $socket;
foreach ($this->handlers["connect"] as $handler) {
$pipelinedCommand = $handler();
if (!empty($pipelinedCommand)) {
$this->outputBuffer = $pipelinedCommand . $this->outputBuffer;
$this->outputBufferLength += strlen($pipelinedCommand);
}
}
$this->readWatcher = onReadable($this->socket, function () {
$read = fread($this->socket, 8192);
if ($read != "") {
$this->parser->append($read);
} elseif (!is_resource($this->socket) || @feof($this->socket)) {
$this->onError(new ConnectException("Connection went away (read)", $code = 2));
}
});
$this->writeWatcher = onWritable($this->socket, $onWrite, ["enable" => !empty($this->outputBuffer)]);
$connectPromisor->succeed();
});
return $this->connectPromisor->promise();
}
/**
* Receive notifications from the server when it starts/stops
*
* @param Server $server
* @return \Amp\Promise
*/
public function update(Server $server) : amp\Promise
{
switch ($server->state()) {
case Server::STARTING:
$this->loadMimeFileTypes(__DIR__ . "/../etc/mime");
break;
case Server::STARTED:
$this->debug = $server->getOption("debug");
amp\enable($this->cacheWatcher);
break;
case Server::STOPPED:
amp\disable($this->cacheWatcher);
$this->cache = [];
$this->cacheTimeouts = [];
$this->cacheEntryCount = 0;
$this->bufferedFileCount = 0;
break;
}
return new amp\Success();
}
/**
* Receive notifications from the server when it starts/stops
*
* @param \SplSubject $subject
* @return \Amp\Promise
*/
public function update(\SplSubject $subject) : amp\Promise
{
switch ($subject->state()) {
case Server::STARTED:
$this->debug = $subject->getOption("debug");
amp\enable($this->cacheWatcher);
break;
case Server::STOPPED:
amp\disable($this->cacheWatcher);
$this->cache = [];
$this->cacheTimeouts = [];
$this->cacheEntryCount = 0;
$this->bufferedFileCount = 0;
break;
}
return new amp\Success();
}
private static function onWrite($state, $op, $bytes)
{
$op->bytesWritten += $bytes;
if ($op->bytesWritten < $op->size) {
return;
}
\array_shift($state->writeOperations);
$options = ["cb_data" => [$state, $op, $op->bytesWritten]];
amp\immediately(self::$succeeder, $options);
if (empty($state->writeOperations)) {
$state->isWriteEnabled = false;
amp\disable($state->writeWatcherId);
}
}
