Objective-C SOCKS5 Client Example with UDP Support

#import <Foundation/Foundation.h>\n#include <sys/socket.h>\n#include <netinet/in.h>\n#include <arpa/inet.h>\n\n@interface Socks5Client : NSObject\n\n- (void)connectToSocks5Server:(NSString *)serverIP port:(NSUInteger)port;\n- (void)sendUDPMessage:(NSString *)message toServer:(NSString *)serverIP port:(NSUInteger)port;\n\n@end\n\n@implementation Socks5Client\n{\n int _socks5Socket;\n NSString *_serverIP;\n NSUInteger _serverPort;\n}\n\n- (void)connectToSocks5Server:(NSString *)serverIP port:(NSUInteger)port {\n _serverIP = serverIP;\n _serverPort = port;\n \n _socks5Socket = socket(AF_INET, SOCK_STREAM, 0);\n if (_socks5Socket < 0) {\n NSLog(@"Failed to create socket");\n return;\n }\n \n struct sockaddr_in serverAddress;\n serverAddress.sin_family = AF_INET;\n serverAddress.sin_port = htons(port);\n serverAddress.sin_addr.s_addr = inet_addr([serverIP UTF8String]);\n \n if (connect(_socks5Socket, (struct sockaddr *)&serverAddress, sizeof(serverAddress)) < 0) {\n NSLog(@"Failed to connect to SOCKS5 server");\n close(_socks5Socket);\n return;\n }\n \n NSLog(@"Connected to SOCKS5 server");\n \n // Perform SOCKS5 handshake\n // ...\n}\n\n- (void)sendUDPMessage:(NSString *)message toServer:(NSString *)serverIP port:(NSUInteger)port {\n struct sockaddr_in serverAddress;\n serverAddress.sin_family = AF_INET;\n serverAddress.sin_port = htons(port);\n serverAddress.sin_addr.s_addr = inet_addr([serverIP UTF8String]);\n \n NSData *messageData = [message dataUsingEncoding:NSUTF8StringEncoding];\n ssize_t sentBytes = sendto(_socks5Socket, [messageData bytes], [messageData length], 0, (struct sockaddr *)&serverAddress, sizeof(serverAddress));\n \n if (sentBytes < 0) {\n NSLog(@"Failed to send UDP message");\n } else {\n NSLog(@"UDP message sent successfully");\n }\n}\n\n@end\n\nint main(int argc, const char * argv[]) {\n @autoreleasepool {\n Socks5Client *client = [[Socks5Client alloc] init];\n [client connectToSocks5Server:@"127.0.0.1" port:1080];\n [client sendUDPMessage:@"Hello, SOCKS5!" toServer:@"127.0.0.1" port:1234];\n }\n return 0;\n}\n\nThis example demonstrates how to create a SOCKS5 client in Objective-C and send UDP messages after connecting to the server. For real-world applications, you'll need to adapt and enhance this code to meet your specific requirements.