/*
* Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
*
* 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 "OFDatagramSocket.h"
OF_ASSUME_NONNULL_BEGIN
@class OFString;
/**
* @protocol OFUDPSocketDelegate OFUDPSocket.h ObjFW/OFUDPSocket.h
*
* @brief A delegate for OFUDPSocket.
*/
@protocol OFUDPSocketDelegate <OFDatagramSocketDelegate>
@end
/**
* @class OFUDPSocket OFUDPSocket.h ObjFW/OFUDPSocket.h
*
* @brief A class which provides methods to create and use UDP sockets.
*
* Addresses are of type @ref OFSocketAddress. You can use the current thread's
* @ref OFDNSResolver to create an address for a host / port pair,
* @ref OFSocketAddressString to get the IP address string for an address and
* @ref OFSocketAddressIPPort to get the port for an address. If you want to
* compare two addresses, you can use
* @ref OFSocketAddressEqual and you can use @ref OFSocketAddressHash to get a
* hash to use in e.g. @ref OFMapTable.
*
* @warning Even though the OFCopying protocol is implemented, it does *not*
* return an independent copy of the socket, but instead retains it.
* This is so that the socket can be used as a key for a dictionary,
* so context can be associated with a socket. Using a socket in more
* than one thread at the same time is not thread-safe, even if copy
* was called to create one "instance" for every thread!
*/
@interface OFUDPSocket: OFDatagramSocket
{
#ifdef OF_WII
uint16_t _port;
#endif
OF_RESERVE_IVARS(OFUDPSocket, 4)
}
/**
* @brief The delegate for asynchronous operations on the socket.
*
* @note The delegate is retained for as long as asynchronous operations are
* still ongoing.
*/
@property OF_NULLABLE_PROPERTY (assign, nonatomic)
id <OFUDPSocketDelegate> delegate;
/**
* @brief Binds the socket to the specified host and port.
*
* @param host The host to bind to. Use `@"0.0.0.0"` for IPv4 or `@"::"` for
* IPv6 to bind to all.
* @param port The port to bind to. If the port is 0, an unused port will be
* chosen, which can be obtained using the return value.
* @return The port the socket was bound to
* @throw OFBindIPSocketFailedException Binding failed
* @throw OFAlreadyConnectedException The socket is already bound
*/
- (uint16_t)bindToHost: (OFString *)host port: (uint16_t)port;
@end
OF_ASSUME_NONNULL_END