X-Git-Url: https://git.mxchange.org/?p=core.git;a=blobdiff_plain;f=inc%2Fclasses%2Fmain%2Fconsole%2Fclass_ConsoleTools.php;h=876f61ca68d638a7bd2e99fa2871619d413ff6e5;hp=2dfe18ff9da8feef36ceb7f16330fe52c51e0e0c;hb=08ebb6a4213421fff6bde3ff172c8416954db878;hpb=3ff00f264808bccde553b75fcd976cd47790d719

diff --git a/inc/classes/main/console/class_ConsoleTools.php b/inc/classes/main/console/class_ConsoleTools.php
index 2dfe18ff..876f61ca 100644
--- a/inc/classes/main/console/class_ConsoleTools.php
+++ b/inc/classes/main/console/class_ConsoleTools.php
@@ -116,6 +116,41 @@ class ConsoleTools extends BaseFrameworkSystem {
 		// Return the IP address
 		return $ip;
 	}
+
+	/**
+	 * Determines own remote IP address (e.g. can be used to probe if we are
+	 * reachable from outside by determining external IP and then connect to it.
+	 * This is accomblished by connecting to the IP of www.ship-simu.org which
+	 * should default to 217.172.186.31.
+	 *
+	 * This method is taken and lightly rewritten from a user comment on php.net:
+	 * http://de.php.net/manual/en/function.socket-create.php#49368
+	 *
+	 * @param	$dest				IP destination we should connect to
+	 * @param	$port				Port destination we should connect to
+	 * @return	$externalAddress	The determined external IP address
+	 * @throws	InvalidSocketException	If socket initialization wents wrong
+	 */
+	public function determineExternalIp ($dest = '217.172.186.31', $port = 80) {
+		// First get a socket
+		$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
+		if (!is_resource($socket)) {
+			// Throw InvalidSocketException
+			throw new InvalidSocketException (array($this, gettype($socket), 0, 'unknown'));
+		} // END - if
+
+		// Connect to the destination
+		socket_connect($socket, $dest, $port);
+
+		// Get the socket address (our external IP) and port (ignored)
+		socket_getsockname($socket, $externalAddress, $ourPort);
+
+		// Close the socket
+		socket_close($socket);
+
+		// Return determined external IP
+		return $externalAddress;
+	}
 }
 
 // [EOF]