/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* 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
* <https://www.gnu.org/licenses/>.
*/
#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 <OFStreamSocketDelegate>
@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 <OFTCPSocketDelegate> 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