/* * Copyright (c) 2008-2024 Jonathan Schleifer * * All rights reserved. * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License version 3.0 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License * version 3.0 for more details. * * You should have received a copy of the GNU Lesser General Public License * version 3.0 along with this program. If not, see * . */ #import "OFStreamSocket.h" #import "OFRunLoop.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 exception An exception which occurred while connecting the socket or * `nil` on success */ typedef void (^OFTCPSocketAsyncConnectBlock)(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; @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 { OFString *_Nullable _SOCKS5Host; uint16_t _SOCKS5Port; #ifdef OF_WII uint16_t _port; #endif OF_RESERVE_IVARS(OFTCPSocket, 4) } #ifdef OF_HAVE_CLASS_PROPERTIES @property (class, nullable, copy, nonatomic) OFString *SOCKS5Host; @property (class, nonatomic) uint16_t SOCKS5Port; #endif #if !defined(OF_WII) && !defined(OF_NINTENDO_3DS) /** * @brief Whether the socket sends keep-alives for the connection. * * @warning This is not available on the Wii or Nintendo 3DS! * * @throw OFGetOptionFailedException The option could not be retrieved * @throw OFSetOptionFailedException The option could not be set */ @property (nonatomic) bool sendsKeepAlives; #endif #ifndef OF_WII /** * @brief Whether sending segments can be delayed. Setting this to `false` sets * TCP_NODELAY on the socket. * * @warning This is not available on the Wii! * * @throw OFGetOptionFailedException The option could not be retrieved * @throw OFSetOptionFailedException The option could not be set */ @property (nonatomic) bool canDelaySendingSegments; #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 ongoing. */ @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 Connects the OFTCPSocket to the specified destination. * * @param host The host to connect to * @param port The port on the host to connect to * @throw OFConnectIPSocketFailedException Connecting failed * @throw OFAlreadyOpenException The socket is already connected or bound */ - (void)connectToHost: (OFString *)host port: (uint16_t)port; /** * @brief Asynchronously connects 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 connects 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 asynchronous * connect */ - (void)asyncConnectToHost: (OFString *)host port: (uint16_t)port runLoopMode: (OFRunLoopMode)runLoopMode; #ifdef OF_HAVE_BLOCKS /** * @brief Asynchronously connects 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: (OFTCPSocketAsyncConnectBlock)block; /** * @brief Asynchronously connects 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 asynchronous * connect * @param block The block to execute once the connection has been established */ - (void)asyncConnectToHost: (OFString *)host port: (uint16_t)port runLoopMode: (OFRunLoopMode)runLoopMode block: (OFTCPSocketAsyncConnectBlock)block; #endif /** * @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 address the socket was bound to * @throw OFBindIPSocketFailedException Binding failed * @throw OFAlreadyOpenException The socket is already connected or bound */ - (OFSocketAddress)bindToHost: (OFString *)host port: (uint16_t)port; @end OF_ASSUME_NONNULL_END