如何捕获stderr输出并通过objective c中的POST请求将消息发送到远程日志文件？

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // 创建一个NSPipe对象
        NSPipe *pipe = [NSPipe pipe];
        
        // 创建一个NSTask对象
        NSTask *task = [[NSTask alloc] init];
        [task setLaunchPath:@"/bin/sh"];
        
        // 将标准错误输出连接到NSPipe对象
        [task setStandardError:pipe];
        
        // 设置命令和参数
        NSArray *arguments = [NSArray arrayWithObjects:@"-c", @"your_command", nil];
        [task setArguments:arguments];
        
        // 启动NSTask
        [task launch];
        
        // 等待NSTask完成
        [task waitUntilExit];
        
        // 从NSPipe中读取标准错误输出
        NSFileHandle *fileHandle = [pipe fileHandleForReading];
        NSData *data = [fileHandle readDataToEndOfFile];
        NSString *errorMessage = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        
        // 发送POST请求将消息发送到远程日志文件
        NSURL *url = [NSURL URLWithString:@"your_remote_log_file_url"];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [request setHTTPMethod:@"POST"];
        [request setHTTPBody:[errorMessage dataUsingEncoding:NSUTF8StringEncoding]];
        
        NSURLSessionDataTask *postDataTask = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
            if (error) {
                NSLog(@"Failed to send log message: %@", error);
            } else {
                NSLog(@"Log message sent successfully");
            }
        }];
        
        [postDataTask resume];
    }
    return 0;
}