下载附件超过64k数据不全问题

[1988yekai]

tool工具下载超过64k的附件下载不全
async def download_attach(self, attach_id: str) -> dict:
"""下载附件。

    Args:
        attach_id (str): 附件ID

    Returns:
        dict: 附件数据

    Raises:
        UserLoggedOut: 未登录时调用
        根据error_handler处理错误
    """
    if not self.wxid:
        raise UserLoggedOut("请先登录")

    async with aiohttp.ClientSession() as session:
        json_param = {"Wxid": self.wxid, "AttachId": attach_id}
        response = await session.post(f'http://{self.ip}:{self.port}/DownloadAttach', json=json_param)
        print(f'http://{self.ip}:{self.port}/DownloadAttach')
        json_resp = await response.json()
        print(json.dumps(json_resp))
        if json_resp.get("Success"):
            return json_resp.get("Data").get("data").get("buffer")
        else:
            self.error_handler(json_resp)

返回的data中的buffer只有64k数据
"totalLen": 197220, "startPos": 0, "dataLen": 65536, "data": {"iLen": 65536, "buffer": ""}

[1988yekai]