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<?php |
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declare(strict_types=1); |
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namespace MySQLReplication\Socket; |
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class Socket implements SocketInterface |
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{ |
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private $socket; |
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public function __destruct() |
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{ |
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$this->close(); |
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} |
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public function close() |
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{ |
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if ($this->isConnected()) { |
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socket_shutdown($this->socket); |
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socket_close($this->socket); |
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} |
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$this->socket = null; |
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} |
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public function isConnected(): bool |
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{ |
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return is_resource($this->socket) || $this->socket instanceof \Socket; |
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} |
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public function connectToStream(string $host, int $port): void |
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{ |
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$this->socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); |
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if (!$this->socket) { |
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throw new SocketException( |
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SocketException::SOCKET_UNABLE_TO_CREATE_MESSAGE . $this->getSocketErrorMessage(), |
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SocketException::SOCKET_UNABLE_TO_CREATE_CODE |
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); |
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} |
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socket_set_block($this->socket); |
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socket_set_option($this->socket, SOL_SOCKET, SO_KEEPALIVE, 1); |
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if (!socket_connect($this->socket, $host, $port)) { |
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throw new SocketException($this->getSocketErrorMessage(), $this->getSocketErrorCode()); |
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} |
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} |
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private function getSocketErrorMessage(): string |
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{ |
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return socket_strerror($this->getSocketErrorCode()); |
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} |
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private function getSocketErrorCode(): int |
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{ |
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return socket_last_error(); |
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} |
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public function readFromSocket(int $length): string |
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{ |
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$received = socket_recv($this->socket, $buf, $length, MSG_WAITALL); |
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if ($length === $received) { |
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return $buf; |
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} |
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// http://php.net/manual/en/function.socket-recv.php#47182 |
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if (0 === $received) { |
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throw new SocketException( |
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SocketException::SOCKET_DISCONNECTED_MESSAGE, |
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SocketException::SOCKET_DISCONNECTED_CODE |
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); |
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} |
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throw new SocketException($this->getSocketErrorMessage(), $this->getSocketErrorCode()); |
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} |
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public function writeToSocket(string $data): void |
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{ |
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if (!socket_write($this->socket, $data, strlen($data))) { |
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throw new SocketException( |
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SocketException::SOCKET_UNABLE_TO_WRITE_MESSAGE . $this->getSocketErrorMessage(), |
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SocketException::SOCKET_UNABLE_TO_WRITE_CODE |
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); |
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} |
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} |
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} |
Moln /
php-mysql-replication
