Added SocketServer and SocketClient

2021-05-07 22:07:26 +10:00
parent 4b960e92d5
commit 834ece2645
3 changed files with 286 additions and 0 deletions
--- a/app/Classes/Sock/SocketClient.php
+++ b/app/Classes/Sock/SocketClient.php
@@ -0,0 +1,145 @@
+<?php
+
+namespace App\Classes\Sock;
+
+use Illuminate\Support\Facades\Log;
+
+final class SocketClient {
+	public \Socket $connection;		// @todo make private
+	private string $address = '';
+	private int $port = 0;
+
+	public function __construct (\Socket $connection) {
+		socket_getsockname($connection,$this->address,$this->port);
+		Log::info(sprintf('Connection from [%s] on port [%d]',$this->address,$this->port),['m'=>__METHOD__]);
+
+		$this->connection = $connection;
+	}
+
+	/**
+	 * @param int $timeout
+	 * @return int
+	 */
+	public function canSend(int $timeout): int
+	{
+		$write = [$this->connection];
+
+		return $this->socketSelect(NULL,$write,NULL,$timeout);
+	}
+
+	/**
+	 * Close the connection with the client
+	 */
+	public function close(): void
+	{
+		socket_shutdown($this->connection);
+		socket_close($this->connection);
+	}
+
+	/**
+	 * Create a client socket
+	 * @return static
+	 */
+	public static function create(string $address,int $port): self
+	{
+		Log::debug(sprintf('Creating connection to [%s:%d]',$address,$port));
+
+		$address = gethostbyname($address);
+
+		/* Create a TCP/IP socket. */
+		$socket = socket_create(AF_INET,SOCK_STREAM,SOL_TCP);
+		if ($socket === FALSE)
+			throw new SocketException(SocketException::CANT_CREATE_SOCKET,socket_strerror(socket_last_error($socket)));
+
+		$result = socket_connect($socket,$address,$port);
+		if ($result === FALSE)
+			throw new SocketException(SocketException::CANT_CONNECT,socket_strerror(socket_last_error($socket)));
+
+		return new self($socket);
+	}
+
+	/**
+	 * Return the client's address
+	 *
+	 * @return string
+	 */
+	public function getAddress(): string
+	{
+		return $this->address;
+	}
+
+	/**
+	 * Return the port in use
+	 *
+	 * @return int
+	 */
+	public function getPort(): int
+	{
+		return $this->port;
+	}
+
+	/**
+	 * @param int $timeout
+	 * @return int
+	 * @note use socketSelect()
+	 * @todo Node used by bink yet?
+	 * @todo to test
+	 */
+	public function hasData(int $timeout): int
+	{
+		$read = [$this->connection];
+		$write = $except = NULL;
+
+		//$rc = socket_select($read,$write,$except,$timeout);
+		//return $rc;
+		return $this->socketSelect($read,NULL,NULL,$timeout);
+	}
+
+	/**
+	 * Send data to the client
+	 *
+	 * @param $message
+	 * @param int $timeout
+	 * @param null $length
+	 * @return false|int
+	 */
+	public function send($message,int $timeout,$length=NULL) {
+		if ($timeout AND (! $rc = $this->canSend($timeout)))
+			return $rc;
+
+		if (is_null($length))
+			$length = strlen($message);
+
+		return socket_write($this->connection,$message,$length);
+	}
+
+	private function socketSelect(?array $read,?array $write,?array $except,int $timeout): int
+	{
+		return socket_select($read,$write,$except,$timeout);
+	}
+
+	/**
+	 * Read data from the socket.
+	 * If we only want 1 character, we'll return the ASCII value of the data received
+	 *
+	 * @param int $timeout
+	 * @param int $len
+	 * @return false|int|string|null
+	 */
+	public function read(int $timeout,int $len=1024)
+	{
+		Log::debug(sprintf('+ Start [%d]',$len),['m'=>__METHOD__]);
+
+		if ($timeout AND (! $rc = $this->hasData($timeout)))
+			return $rc;
+
+		if (($buf=socket_read($this->connection,$len,PHP_BINARY_READ)) === FALSE) {
+			return NULL;
+		}
+
+		Log::debug(sprintf('  - Read [%d]',strlen($buf)),['m'=>__METHOD__]);
+
+		// For single character reads, we'll return the ASCII value of the buf
+		return ($len == 1 and (ord($buf) != 0)) ? ord($buf) : $buf;
+	}
+}