Estoy tratando de subir varios archivos a un servidor usando unPOST solicitud, pero por alguna razón, solo se envía un archivo. Sospecho que estoy haciendo algo mal con el límite, pero no estoy seguro de dónde ...

¿Qué pasa con mi código?

    [_serverRequest setHTTPMethod:@"POST"];

    NSString *_boundary = @"14737809831466499882746641449";

    NSString *_contentType = [NSString stringWithFormat:@"multipart/form-data; charset=UTF-8; boundary=%@",_boundary];
    [_serverRequest setValue:_contentType forHTTPHeaderField:@"Content-Type"];

    /* reqeuest body */
    NSMutableData *_requestBody = [NSMutableData data];

    for (id _instance in self.currentBrowserInstances)
    {
        if ([_instance respondsToSelector:@selector(pathToDatabase)])
        {
            NSString *_databasePath = [_instance pathToDatabase];

            NSMutableString *_filename = [NSMutableString stringWithString:[self _generatedFilename]];
            [_filename appendFormat:@"_%@", [[_instance name] stringByReplacingOccurrencesOfString:@" " withString:@""]];

            if (_databasePath.pathExtension.length > 0)
                [_filename appendFormat:@".%@", _databasePath.pathExtension];

            /* Build Request Body */
            [_requestBody appendData:[[NSString stringWithFormat:@"--%@\r\n", _boundary] dataUsingEncoding:NSUTF8StringEncoding]];
            [_requestBody appendData:[[NSString stringWithFormat:@"Content-Disposition: multipart/form-data; name=\"databases\"; filename=\"%@\"\r\n", _filename] dataUsingEncoding:NSUTF8StringEncoding]];
            [_requestBody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
            [_requestBody appendData:[NSData dataWithContentsOfFile:_databasePath]];
            [_requestBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
        }
    }

    [_requestBody appendData:[[NSString stringWithFormat:@"--%@--\r\n", _boundary] dataUsingEncoding:NSUTF8StringEncoding]];

    [_serverRequest setHTTPBody:_requestBody];

Aquí está la respuesta del servidor:

Array
(
    [databases] => Array
        (
            [name] => QTSKUFJM_test.dat
            [type] => application/octet-stream
            [tmp_name] => /private/var/tmp/php3w7qd5
            [error] => 0
            [size] => 64576
        )
)