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<?php |
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namespace MallardDuck\Whois; |
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use MallardDuck\Whois\Exceptions\SocketClientException; |
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/** |
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* A simple socket stream client. |
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* |
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* @author mallardduck <[email protected]> |
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* |
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* @copyright lucidinternets.com 2020 |
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* |
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* @version 1.1.0 |
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*/ |
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final class SocketClient |
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{ |
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protected $socketUri = null; |
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protected $socket = null; |
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protected $timeout = 30; |
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protected $connected = false; |
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public function __construct(string $socketUri, int $timeout = 30) |
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{ |
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$this->socketUri = $socketUri; |
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$this->timeout = $timeout; |
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} |
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/** |
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* Fluent method to connect to the socket via the URI set at construction time. |
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* |
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* @return $this |
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* @throws SocketClientException |
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*/ |
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public function connect(): self |
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{ |
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$fp = @stream_socket_client($this->socketUri, $errno, $errstr, $this->timeout); |
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if (!is_resource($fp) && false === $fp) { |
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$message = sprintf( |
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"Stream Connection Failed: unable to connect to %s. System Error: %s ", |
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$this->socketUri, |
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$errstr |
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); |
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throw new SocketClientException($message, $errno); |
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} |
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$this->socket = $fp; |
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$this->connected = true; |
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return $this; |
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} |
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/** |
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* Check if the current status shows as connected. |
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* |
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* @return bool |
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*/ |
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public function isConnected(): bool |
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{ |
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return $this->connected; |
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} |
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/** |
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* Write (or send) the string to the current socket stream. |
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* |
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* @param string $string |
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* |
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* @return false|int |
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* @throws SocketClientException |
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*/ |
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public function writeString(string $string) |
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{ |
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if (!$this->connected) { |
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$message = sprintf("The calling method %s requires the socket to be connected", __FUNCTION__); |
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throw new SocketClientException($message); |
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} |
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return stream_socket_sendto($this->socket, $string); |
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} |
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/** |
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* Get all the response data from the socket stream. |
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* |
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* @return string |
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* @throws SocketClientException |
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*/ |
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public function readAll(): string |
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{ |
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if (!$this->connected) { |
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$message = sprintf("The calling method %s requires the socket to be connected", __FUNCTION__); |
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throw new SocketClientException($message); |
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} |
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return stream_get_contents($this->socket); |
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} |
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/** |
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* Fluent method to disconnect from the whois socket. |
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* |
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* @return $this |
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*/ |
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public function disconnect(): self |
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{ |
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if (!is_null($this->socket)) { |
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stream_socket_shutdown($this->socket, STREAM_SHUT_RDWR); |
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fclose($this->socket); |
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} |
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$this->socket = null; |
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$this->connected = false; |
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return $this; |
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} |
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public function __destruct() |
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{ |
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$this->disconnect(); |
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} |
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} |
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mallardduck /
php-whois-client
