ObjFW  Artifact [e8368795dc]

Artifact e8368795dc543e21f9c0dbdfaaffa59daf36050960a4370c55212b9a11dbaede:

• File src/exceptions/OFBindFailedException.h — part of check-in [62e2de30b9] at 2015-02-16 08:39:17 on branch trunk — Explicitly pass errno to exceptions

  The old behaviour where the exception would access errno directly on
  creation of the exception was very fragile. The two main problems with
  it were that sometimes it would pick up an errno even though none had
  been set and in other cases that when the exception was created errno
  had already been overridden.

  This also greatly increases errno handling on Win32, especially in
  conjunction with sockets. It can still be improved further, though. (user: js, size: 2511) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFException.h"

#ifndef OF_HAVE_SOCKETS
# error No sockets available!
#endif

/*!
 * @class OFBindFailedException \
 *	  OFBindFailedException.h ObjFW/OFBindFailedException.h
 *
 * @brief An exception indicating that binding a socket failed.
 */
@interface OFBindFailedException: OFException
{
	id _socket;
	OFString *_host;
	uint16_t _port;
	int _errNo;
}

#ifdef OF_HAVE_PROPERTIES
@property (readonly, copy) OFString *host;
@property (readonly) uint16_t port;
@property (readonly, retain) id socket;
@property (readonly) int errNo;
#endif

/*!
 * @brief Creates a new, autoreleased bind failed exception.
 *
 * @param host The host on which binding failed
 * @param port The port on which binding failed
 * @param socket The socket which could not be bound
 * @param errNo The errno of the error
 * @return A new, autoreleased bind failed exception
 */
+ (instancetype)exceptionWithHost: (OFString*)host
			     port: (uint16_t)port
			   socket: (id)socket
			    errNo: (int)errNo;

/*!
 * @brief Initializes an already allocated bind failed exception.
 *
 * @param host The host on which binding failed
 * @param port The port on which binding failed
 * @param socket The socket which could not be bound
 * @param errNo The errno of the error
 * @return An initialized bind failed exception
 */
- initWithHost: (OFString*)host
	  port: (uint16_t)port
	socket: (id)socket
	 errNo: (int)errNo;

/*!
 * @brief Returns the host on which binding failed.
 *
 * @return The host on which binding failed
 */
- (OFString*)host;

/*!
 * @brief Return the port on which binding failed.
 *
 * @return The port on which binding failed
 */
- (uint16_t)port;

/*!
 * @brief Returns the socket which could not be bound.
 *
 * @return The socket which could not be bound
 */
- (id)socket;

/*!
 * @brief Returns the errno from when the exception was created.
 *
 * @return The errno from when the exception was created
 */
- (int)errNo;
@end