/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019, 2020 * Jonathan Schleifer * * 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 "OFRunLoop.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 /*! * @protocol OFTCPSocketDelegate OFTCPSocket.h ObjFW/OFTCPSocket.h * * A delegate for OFTCPSocket. */ @protocol OFTCPSocketDelegate @optional /*! * @brief A method which is called when a socket connected. * * @param socket The socket which connected * @param host The host connected to * @param port The port on the host connected to * @param exception An exception that occurred while connecting, or nil on * success */ - (void)socket: (OFTCPSocket *)socket didConnectToHost: (OFString *)host port: (uint16_t)port exception: (nullable id)exception; /*! * @brief A method which is called when a socket accepted a connection. * * @param socket The socket which accepted the connection * @param acceptedSocket The socket which has been accepted * @param exception An exception that occurred while accepting, or nil on * success * @return A bool whether to accept the next incoming connection */ - (bool)socket: (OFTCPSocket *)socket didAcceptSocket: (OFTCPSocket *)acceptedSocket exception: (nullable id)exception; @end /*! * @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; of_socket_address_t _remoteAddress; OFString *_Nullable _SOCKS5Host; uint16_t _SOCKS5Port; #ifdef OF_WII uint16_t _port; #endif OF_RESERVE_IVARS(4) } #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. * * @note This only works for accepted sockets! */ @property (readonly, nonatomic) const of_socket_address_t *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 The delegate for asynchronous operations on the socket. * * @note The delegate is retained for as long as asynchronous operations are * still outstanding. */ @property OF_NULLABLE_PROPERTY (assign, nonatomic) id delegate; /*! * @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; /*! * @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 */ - (void)asyncConnectToHost: (OFString *)host port: (uint16_t)port; /*! * @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 runLoopMode The run loop mode in which to perform the async connect */ - (void)asyncConnectToHost: (OFString *)host port: (uint16_t)port runLoopMode: (of_run_loop_mode_t)runLoopMode; #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; /*! * @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 runLoopMode The run loop mode in which to perform the async connect * @param block The block to execute once the connection has been established */ - (void)asyncConnectToHost: (OFString *)host port: (uint16_t)port runLoopMode: (of_run_loop_mode_t)runLoopMode block: (of_tcp_socket_async_connect_block_t)block; #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. */ - (void)asyncAccept; /*! * @brief Asynchronously accept an incoming connection. * * @param runLoopMode The run loop mode in which to perform the async accept */ - (void)asyncAcceptWithRunLoopMode: (of_run_loop_mode_t)runLoopMode; #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; /*! * @brief Asynchronously accept an incoming connection. * * @param runLoopMode The run loop mode in which to perform the async accept * @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)asyncAcceptWithRunLoopMode: (of_run_loop_mode_t)runLoopMode block: (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