/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* 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 "OFStreamSocket.h"
#import "socket.h"
OF_ASSUME_NONNULL_BEGIN
/*! @file */
@class OFTCPSocket;
@class OFString;
#ifdef OF_HAVE_BLOCKS
/*!
* @brief A block which is called when the socket connected.
*
* @param socket The socket which connected
* @param exception An exception which occurred while connecting the socket or
* `nil` on success
*/
typedef void (^of_tcp_socket_async_connect_block_t)(OFTCPSocket *socket,
id _Nullable exception);
/*!
* @brief A block which is called when the socket accepted a connection.
*
* @param socket The socket which accepted the connection
* @param acceptedSocket The socket which has been accepted
* @param exception An exception which occurred while accepting the socket or
* `nil` on success
* @return A bool whether the same block should be used for the next incoming
* connection
*/
typedef bool (^of_tcp_socket_async_accept_block_t)(OFTCPSocket *socket,
OFTCPSocket *acceptedSocket, id _Nullable exception);
#endif
/*!
* @class OFTCPSocket OFTCPSocket.h ObjFW/OFTCPSocket.h
*
* @brief A class which provides methods to create and use TCP sockets.
*
* To connect to a server, create a socket and connect it.
* To create a server, create a socket, bind it and listen on it.
*/
@interface OFTCPSocket: OFStreamSocket
{
bool _listening;
struct sockaddr *_Nullable _address;
socklen_t _addressLength;
OFString *_Nullable _SOCKS5Host;
uint16_t _SOCKS5Port;
#ifdef OF_WII
uint16_t _port;
#endif
}
#ifdef OF_HAVE_CLASS_PROPERTIES
@property (class, nullable, copy, nonatomic) OFString *SOCKS5Host;
@property (class, nonatomic) uint16_t SOCKS5Port;
#endif
/*!
* @brief Whether the socket is a listening socket.
*/
@property (readonly, nonatomic, getter=isListening) bool listening;
/*!
* @brief The remote address as a string
*
* @note This only works for accepted sockets!
*/
@property OF_NULLABLE_PROPERTY (readonly, nonatomic) OFString *remoteAddress;
#if !defined(OF_WII) && !defined(OF_NINTENDO_3DS)
/*!
* @brief Whether keep alives are enabled for the connection.
*
* @warning This is not available on the Wii or Nintendo 3DS!
*/
@property (nonatomic, getter=isKeepAliveEnabled) bool keepAliveEnabled;
#endif
#ifndef OF_WII
/*!
* @brief Whether TCP_NODELAY is enabled for the connection
*
* @warning This is not available on the Wii!
*/
@property (nonatomic, getter=isTCPNoDelayEnabled) bool TCPNoDelayEnabled;
#endif
/*!
* @brief The host to use as a SOCKS5 proxy.
*/
@property OF_NULLABLE_PROPERTY (copy, nonatomic) OFString *SOCKS5Host;
/*!
* @brief The port to use on the SOCKS5 proxy.
*/
@property (nonatomic) uint16_t SOCKS5Port;
/*!
* @brief Sets the global SOCKS5 proxy host to use when creating a new socket
*
* @param SOCKS5Host The host to use as a SOCKS5 proxy when creating a new
* socket
*/
+ (void)setSOCKS5Host: (nullable OFString *)SOCKS5Host;
/*!
* @brief Returns the host to use as a SOCKS5 proxy when creating a new socket
*
* @return The host to use as a SOCKS5 proxy when creating a new socket
*/
+ (nullable OFString *)SOCKS5Host;
/*!
* @brief Sets the global SOCKS5 proxy port to use when creating a new socket
*
* @param SOCKS5Port The port to use as a SOCKS5 proxy when creating a new socket
*/
+ (void)setSOCKS5Port: (uint16_t)SOCKS5Port;
/*!
* @brief Returns the port to use as a SOCKS5 proxy when creating a new socket
*
* @return The port to use as a SOCKS5 proxy when creating a new socket
*/
+ (uint16_t)SOCKS5Port;
/*!
* @brief Connect the OFTCPSocket to the specified destination.
*
* @param host The host to connect to
* @param port The port on the host to connect to
*/
- (void)connectToHost: (OFString *)host
port: (uint16_t)port;
#ifdef OF_HAVE_THREADS
/*!
* @brief Asynchronously connect the OFTCPSocket to the specified destination.
*
* @param host The host to connect to
* @param port The port on the host to connect to
* @param target The target on which to call the selector once the connection
* has been established
* @param selector The selector to call on the target. The signature must be
* `void (OFTCPSocket *socket, id context, id exception)`.
* @param context A context object to pass along to the target
*/
- (void)asyncConnectToHost: (OFString *)host
port: (uint16_t)port
target: (id)target
selector: (SEL)selector
context: (nullable id)context;
# ifdef OF_HAVE_BLOCKS
/*!
* @brief Asynchronously connect the OFTCPSocket to the specified destination.
*
* @param host The host to connect to
* @param port The port on the host to connect to
* @param block The block to execute once the connection has been established
*/
- (void)asyncConnectToHost: (OFString *)host
port: (uint16_t)port
block: (of_tcp_socket_async_connect_block_t)block;
# endif
#endif
/*!
* @brief Bind 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
*/
- (uint16_t)bindToHost: (OFString *)host
port: (uint16_t)port;
/*!
* @brief Listen on the socket.
*
* @param backLog Maximum length for the queue of pending connections.
*/
- (void)listenWithBackLog: (int)backLog;
/*!
* @brief Listen on the socket.
*/
- (void)listen;
/*!
* @brief Accept an incoming connection.
*
* @return An autoreleased OFTCPSocket for the accepted connection.
*/
- (instancetype)accept;
/*!
* @brief Asynchronously accept an incoming connection.
*
* @param target The target on which to execute the selector when a new
* connection has been accepted. The method returns whether the
* next incoming connection should be accepted by the specified
* block as well.
* @param selector The selector to call on the target. The signature must be
* `bool (OFTCPSocket *socket, OFTCPSocket *acceptedSocket,
* id context, id exception)`.
* @param context A context object to pass along to the target
*/
- (void)asyncAcceptWithTarget: (id)target
selector: (SEL)selector
context: (nullable id)context;
#ifdef OF_HAVE_BLOCKS
/*!
* @brief Asynchronously accept an incoming connection.
*
* @param block The block to execute when a new connection has been accepted.
* Returns whether the next incoming connection should be accepted
* by the specified block as well.
*/
- (void)asyncAcceptWithBlock: (of_tcp_socket_async_accept_block_t)block;
#endif
@end
#ifdef __cplusplus
extern "C" {
#endif
extern Class _Nullable of_tls_socket_class;
#ifdef __cplusplus
}
#endif
OF_ASSUME_NONNULL_END