Requests 和 Requests_Toolbelt 文件大小限制

Question

使用 request_toolbelt 的 MultipartEncoder，我可以将文件上传到我的 Pyramid 服务器，但只能达到一定的大小。一旦文件超过一定大小（不确定确切大小），请求就会抛出 ConnectionError。我的 Pyramid 服务器绝对没有收到请求的迹象。回调监视器显示已读取 2 或 3 个块，但随后中止。为什么？？这是我的代码：

### client-side

# callback
def cb(monitor):
    print monitor.bytes_read

file = open('my_big_file.mpg', 'rb')
payload = MultipartEncoder({'uploadedFile': (file.name, file, 'application/octet-stream')})
monitor = MultipartEncoderMonitor(payload, cb)
r = requests.post(url, data=monitor, headers={'Content-Type': payload.content_type})

#### server-side

@view_config(route_name='remote.agent_upload', renderer='json')
def remote_agent_upload(request):
r = request.response
uploadedFile = request.POST['uploadedFile']
fs = uploadedFile.file
filename = uploadedFile.filename
f = open('path_to_storage' + filename, 'wb')
f.write(fs.read())
fs.close()
f.close()
return r

### output and traceback

8192
16384
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "c:\Python27\lib\site-packages\requests\api.py", line 109, in post
    return request('post', url, data=data, json=json, **kwargs)
  File "c:\Python27\lib\site-packages\requests\api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "c:\Python27\lib\site-packages\requests\sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "c:\Python27\lib\site-packages\requests\sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "c:\Python27\lib\site-packages\requests\adapters.py", line 415, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', error(10053, 'An established connection was aborted by the software in your host machine'))

Answer 1

Windows 正在关闭连接，原因不明。详情请参阅this other answer。

简而言之，这不是请求、请求工具带或金字塔的错。