Objectice-Cでファイルをアップロードする

FileUpload.m

- (IBAction)upload:(id)sender {
    NSURL *url = [NSURL URLWithString:@"http://192.168.100.203:4567/"];
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
    NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:_filePath.lastPathComponent], 0.5);
    NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
        [formData appendPartWithFileData:imageData name:@"file" fileName:_filePath.lastPathComponent mimeType:@"image/jpeg"];
    }];
    
    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
//    [operation setUploadProgressBlock:^(NSInteger bytesWritten, NSInteger totalBytesWritten, NSInteger totalBytesExpectedToWrite) {
//        NSLog(@"Sent %d of %d bytes", totalBytesWritten, totalBytesExpectedToWrite);
//    }];
    [operation start];
}