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<?php |
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namespace Pheanstalk\Socket; |
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use Pheanstalk\Contract\SocketInterface; |
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use Pheanstalk\Exception\ConnectionException; |
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use Pheanstalk\Exception\SocketException; |
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/** |
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* A Socket implementation using the Sockets extension |
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*/ |
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class SocketSocket implements SocketInterface |
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{ |
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/** @var resource */ |
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private $socket; |
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public function __construct( |
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string $host, |
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int $port, |
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int $connectTimeout |
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) { |
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if (!extension_loaded('sockets')) { |
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throw new \Exception('Sockets extension not found'); |
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} |
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$this->socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); |
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if ($this->socket === false) { |
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$this->throwException(); |
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} |
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$timeout = [ |
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'sec' => $connectTimeout, |
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'usec' => 0 |
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]; |
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$sendTimeout = socket_get_option($this->socket, SOL_SOCKET, SO_SNDTIMEO); |
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$receiveTimeout = socket_get_option($this->socket, SOL_SOCKET, SO_RCVTIMEO); |
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socket_set_option($this->socket, SOL_TCP, SO_KEEPALIVE, 1); |
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socket_set_option($this->socket, SOL_SOCKET,SO_SNDTIMEO, $timeout); |
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socket_set_option($this->socket, SOL_SOCKET,SO_RCVTIMEO, $timeout); |
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socket_set_block($this->socket); |
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$address = gethostbyname($host); |
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if (@socket_connect($this->socket, $address, $port) === false) { |
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$error = socket_last_error($this->socket); |
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throw new ConnectionException($error, socket_strerror($error)); |
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}; |
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socket_set_option($this->socket, SOL_SOCKET,SO_SNDTIMEO, $sendTimeout); |
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socket_set_option($this->socket, SOL_SOCKET,SO_RCVTIMEO, $receiveTimeout); |
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} |
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/** |
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* Writes data to the socket. |
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* |
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* @param string $data |
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* |
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* @return void |
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*/ |
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public function write(string $data): void |
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{ |
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$this->checkClosed(); |
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while (!empty($data)) { |
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$written = socket_write($this->socket, $data); |
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if ($written === false) { |
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$this->throwException(); |
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} |
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$data = substr($data, $written); |
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} |
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} |
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private function throwException() |
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{ |
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$error = socket_last_error($this->socket); |
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throw new SocketException(socket_strerror($error), $error); |
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} |
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private function checkClosed() |
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{ |
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if (!isset($this->socket)) { |
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throw new SocketException('The connection was closed'); |
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} |
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} |
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/** |
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* Reads up to $length bytes from the socket. |
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* |
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* @return string |
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*/ |
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public function read(int $length): string |
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{ |
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$this->checkClosed(); |
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$buffer = ''; |
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while (mb_strlen($buffer, '8BIT') < $length) { |
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$result = socket_read($this->socket, $length - mb_strlen($buffer, '8BIT')); |
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if ($result === false) { |
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$this->throwException(); |
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} |
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$buffer .= $result; |
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} |
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return $buffer; |
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} |
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public function getLine(): string |
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{ |
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$this->checkClosed(); |
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$buffer = ''; |
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// Reading stops at \r or \n. In case it stopped at \r we must continue reading. |
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while(substr($buffer, -1, 1) !== "\n") { |
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$result = socket_read($this->socket, 1024, PHP_NORMAL_READ); |
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if ($result === false) { |
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$this->throwException(); |
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} |
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$buffer .= $result; |
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} |
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return rtrim($buffer); |
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} |
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/** |
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* Disconnect the socket; subsequent usage of the socket will fail. |
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*/ |
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public function disconnect(): void |
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{ |
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$this->checkClosed(); |
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socket_close($this->socket); |
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unset($this->socket); |
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} |
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} |
pheanstalk /
pheanstalk
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